JP2007193380A - Information processor, information processing method and computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To dynamically display inter-information relevancy. <P>SOLUTION: This information processor is provided with a keyword acquisition part 138 for successively acquiring a keyword group including relevant keywords; a display control part 140 for successively displaying nodes expressing the keywords and edges connecting the nodes belonging to the same keyword group on a picture for every keyword group; and a display information storage part 142 for storing the keywords corresponding to the nodes displayed on the picture. When the keywords whose corresponding nodes have been already displayed at a display device are present in the keyword group, a display control part newly displays the nodes of keywords which have not displayed yet at the display device, and connects the nodes belonging to the keyword group including the newly displayed nodes and the already displayed nodes through a connection line to each other, and calculates the inter-connected node attraction and repulsive force, and arranges the respective nodes at the positions where the attraction and the repulsive force are balanced. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an information processing apparatus, an information processing method, and a computer program. Specifically, the present invention relates to an information processing apparatus, an information processing method, and a computer program that display a plurality of keywords that are related to each other.

  In recent years, information processing devices such as personal computers, mobile phones, and digital cameras display each information so as to effectively appeal to the user's vision when displaying information on the screen of the display device. (See, for example, Patent Document 1).

  The icon display system described in Patent Literature 1 displays a plurality of icons along a visible circular orbit, and provides a cutting unit in the orbit, and the icon is displayed at the cutting unit according to the user's icon selection operation. By displaying so as to disappear and appear from the orbit, the user can intuitively grasp that there is an icon that is not currently displayed but is in a displayable state.

  By the way, in recent years, the amount of information that a user can acquire using an information processing apparatus has become enormous due to the spread of the Internet. In order for the user to effectively grasp an enormous amount of information, it is important for the user to understand the relationship between the information. Therefore, there is provided a technique for causing an information processing device to display information related to each other on the screen of the display device in a manner that allows the user to grasp the relationship (see, for example, Non-Patent Document 1). .

JP 2004-295159 A http: // www. touchgraph. com /

  However, in an information society such as in recent years, information that a user can acquire using an information processing device changes every moment. However, in the conventional technologies as described above, the information is changed in response to information changes. There is a problem that the relation between information cannot be displayed.

  Accordingly, the present invention has been made in view of such problems, and an object thereof is to provide an information processing apparatus, an information processing method, and a computer capable of dynamically displaying the relationship between information. To provide a program.

  In order to solve the above problems, according to an aspect of the present invention, there is provided an information processing apparatus that displays a plurality of keywords related to each other. The information processing apparatus includes a keyword acquisition unit that sequentially acquires a keyword group including one or more keywords that are related to each other, a keyword object that represents a keyword, and a connection line that connects between keyword objects belonging to the same keyword group Are sequentially displayed on the screen of the display device for each keyword group, and a display information storage unit for storing keywords corresponding to the keyword objects displayed on the screen of the display device. If there is a keyword corresponding to the keyword object already displayed on the screen of the display device in the keyword group, the display control unit does not yet display the keyword in the keyword group on the screen of the display device. If there is a keyword object, the keyword object of the keyword is newly displayed on the screen of the display device, and the keyword object belonging to the keyword group including the newly displayed keyword object and the already displayed keyword object is connected to each other by a connecting line. The attractive force and repulsive force between the connected and connected keyword objects are calculated, and each keyword object is arranged at a position where the attractive force and the repulsive force are balanced.

  In addition, when the keyword corresponding to the keyword object already displayed on the screen of the display device does not exist in the keyword group, the display control unit newly displays the keyword object corresponding to the keyword in the keyword group. Display on the device screen. At this time, if there is only one keyword in the keyword group, the keyword object corresponding to the one keyword is displayed on the screen, and the newly displayed keyword object is already displayed on the screen. The repulsive force with all the other keyword objects is calculated, and the position of the newly displayed keyword object can be determined and arranged according to the calculated repulsive force. When there are two or more keywords in the keyword group, the keyword objects corresponding to each keyword are displayed on the screen, and the newly displayed keyword objects are connected by a connection line. Then, the attractive force between the keyword objects connected by the connecting line is calculated, the repulsive force between each newly displayed keyword object and all the keyword objects already displayed is calculated, and the calculated attractive force and repulsive force are calculated. A newly displayed keyword object can be placed at a position where the and are balanced.

  According to the above invention, the keyword acquisition unit sequentially acquires the keyword groups, and the display control unit sequentially displays the keyword objects representing the keywords belonging to the keyword groups and the connection lines connecting the keyword objects for each keyword group. On the screen. That is, according to the present invention, keywords having relevance that belong to the same keyword group are sequentially visualized on the screen of the display device, and this visualization allows the user to recognize the relevance between keywords. I can grasp it.

  Further, according to the present invention, a keyword for which a corresponding keyword object is already displayed on the screen of the display device is not newly displayed even if the keyword is included in a new keyword group. The keyword objects of other keywords included in the new keyword group and the already displayed keyword objects are connected by connection lines. As a result, keyword objects belonging to different keyword groups are connected to a common keyword object via a connection line. Therefore, a relevance that the same keyword is included occurs between the keyword groups, and the relevance is sequentially visualized on the screen of the display device. With this visualization, the user can grasp the dynamic relationship between keyword groups. Whether or not the keyword object corresponding to the keyword in the keyword group is already displayed on the screen of the display device is stored as a keyword corresponding to the keyword object displayed on the screen of the display device. This can be determined by examining whether or not the corresponding keyword is already stored in the display information storage unit.

  Furthermore, by placing each keyword object at a position where the attractive force and repulsive force between the keyword objects are balanced, the relationship between the keywords and the relationship between the keyword groups are displayed on the screen of the display device in an easy-to-understand manner for the user. The

  The display control unit changes the position of each keyword object from the position of each keyword object before the position determined by the attractive force and the repulsive force to the position determined by the attractive force and the repulsive force. You may make it carry out, displaying the progress of a movement.

  The display control unit may change the appearance of the keyword object according to the appearance frequency of the keyword. The appearance frequency of the keyword can be a frequency at which the keyword is included in the keyword group to be displayed. According to such a configuration, the user can grasp at a glance the keywords that frequently appear and the keywords that do not.

  The display control unit may change the appearance of the keyword object according to the type of the keyword. The keyword type can be a type that distinguishes the content of the keyword, such as a unique object name, a person name, a place name, and an organization name. According to this configuration, the user can grasp the types of keywords at a glance.

  The display control unit may change the appearance of the connection line according to the elapsed time after the connection line is first displayed on the screen of the display device. According to such a configuration, the user can grasp at a glance the novelty of the relationship between keywords.

  The information processing apparatus may further include a category classification unit that classifies the keyword group into any one of a plurality of categories. In this case, the display control unit assigns the keyword group to which the keyword belongs. Accordingly, an appearance position that is a position when the keyword object of the keyword is first displayed on the screen of the display device may be determined. According to such a configuration, the user can grasp at a glance the category of the keyword group to which the keyword belongs.

  The display control unit may determine an appearance position, which is a position when the keyword object is first displayed on the screen of the display device, using a random number.

  The display control unit determines in advance the maximum number of keyword objects to be displayed on the screen of the display device, and if the number of keyword objects displayed on the screen of the display device exceeds the maximum number, You may make it delete from the screen of a display apparatus in an order from a keyword object.

  The display control unit determines in advance the maximum number of connection lines to be displayed on the screen of the display device, and when the number of connection lines displayed on the screen of the display device exceeds the maximum number, You may make it delete from the screen of a display apparatus in an order from the connection line with long elapsed time after displaying on a screen first.

  The keyword group may be composed of keywords extracted from text data of one article in the weblog. According to such a configuration, keywords having a relevance that belong to one article of the web log are visualized together with the relevance. Therefore, the user can easily grasp the topic on the weblog by grasping the keyword included in the article of the weblog and the relationship between the keywords.

  The information processing apparatus may further include a keyword extraction unit that extracts a keyword from text data of the article of the web log.

  The information processing apparatus may further include a blog article collection unit that collects text data of web log articles from a web server connected via a network.

  The connection line may be linked to a weblog article to which the two keywords connected by the connection line belong together. With this configuration, the user can view the linked web log article by selecting the connection line with a mouse or the like, for example.

  In order to solve the above problems, according to another aspect of the present invention, there is provided a computer program that causes a computer to function as the information processing apparatus. The computer program is stored in a storage device included in the computer, and is read and executed by a CPU included in the computer, thereby causing the computer to function as the information processing apparatus. A computer-readable recording medium on which a computer program is recorded is also provided. The recording medium is, for example, a magnetic disk or an optical disk.

  In order to solve the above problems, according to another aspect of the present invention, an information processing method for displaying a plurality of keywords related to each other is provided. The information processing method includes a keyword acquisition step for sequentially acquiring a keyword group including one or more keywords that are related to each other; a keyword object that represents the keyword; and a connection line that connects between keyword objects belonging to the same keyword group , And a display control step for sequentially displaying on the screen of the display device for each keyword group. In the display control step, if a keyword corresponding to a keyword object already displayed on the screen of the display device is in the keyword group, the keyword that is not yet displayed on the screen of the display device in the keyword group. If there is a keyword object, the keyword object of the keyword is newly displayed on the screen of the display device, and the keyword object belonging to the keyword group including the newly displayed keyword object and the already displayed keyword object is connected to each other by a connecting line. A step of connecting; calculating an attractive force and a repulsive force between the keyword objects connected by the connection line; and placing each keyword object at a position where the attractive force and the repulsive force are balanced.

  As described above, according to the present invention, it is possible to provide an information processing apparatus, an information processing method, and a computer program capable of dynamically displaying the relationship between information.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present specification and drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted.

  In this embodiment, the information processing apparatus according to the present invention can use keywords included in one article of a web log (hereinafter also referred to as a blog) as keywords that are related to each other, and can recognize the relationship between the keywords. The present invention is applied to the information processing apparatus 102 that can be displayed on the screen of the display apparatus in various modes. In the present embodiment, keywords included in one blog article are related to each other, and a keyword group including one or more keywords related to each other is extracted from text data of one blog article. A group consisting of one or more keywords.

  A blog is a weblog, and is an internet site or homepage that writes its opinions in a diary format on news, incidents, hobbies, and the like. A blog article is information added to a blog by writing once, and a blog is composed of a plurality of blog articles. With the spread of blogs, a huge amount of blog articles are written and added on the Internet every day by many Internet users. Therefore, by collecting blog articles in a short cycle and visualizing the keywords included in the text data of the blog articles, it becomes possible for the user to intuitively grasp recent topics on the Internet. In addition, by visualizing the relationship between keywords, the user can grasp the relationship between blog articles, that is, the relationship between topics on the Internet. Furthermore, by changing the relevance between keywords as the number of keywords to be displayed increases with the collection of blog articles, it becomes possible to dynamically visualize the relevance between keywords, allowing users to connect to the Internet. It is possible to grasp changes with time of relevance between topics. Hereinafter, the information processing apparatus 102 according to the present embodiment will be described in detail.

<Ambient environment of information processing device>
First, the surrounding environment of the information processing apparatus 102 according to the present embodiment will be described with reference to FIG. As illustrated in FIG. 1, the information processing apparatus 102 is connected to a network 108 and can communicate with the Web servers 104 and 106 via the network 108. The information processing apparatus 102 collects text data of blog articles distributed in the RSS format from the Web servers 104 and 106 via the network 108. Information of a plurality of blog articles may be stored in one RSS data. The network 108 is composed of, for example, a public line network such as the Internet, a telephone line network, and a satellite communication network, or a dedicated line network such as WAN, LAN, and IP-VPN, and may be wired or wireless.

<Hardware configuration of information processing device>
Next, a hardware configuration of the information processing apparatus 102 will be briefly described with reference to FIG. The information processing apparatus 102 is a computer having a function of displaying keywords related to each other on the screen of the display device so that the relation can be recognized. Examples of the information processing apparatus 102 include a personal computer, a mobile phone, a PDA (Personal Digital Assistant), a television receiver, and a hard disk recorder.

  As shown in FIG. 2, the information processing apparatus 102 includes, for example, a CPU (Central Processing Unit) 111, a ROM (Read Only Memory) 112, a RAM (Random Access Memory) 113, a host bus 114, a bridge 115, an external bus 116, and an interface. 117, an input device 118, an output device 120, a storage device (HDD) 121, a drive 122, a connection port 124, a communication device 125, and the like.

  The CPU 111 functions as an arithmetic processing unit and a control unit, operates according to various programs stored in the ROM 112 or the HDD 121, and controls each unit in the information processing apparatus 102. Specific processing includes, for example, processing for sequentially acquiring mutually related blog articles, and a keyword object representing a keyword and a connection line connecting keyword objects belonging to the same blog sequentially for each blog article. A process of displaying on the screen of the display device is executed.

  The ROM 112 stores programs used by the CPU 111, calculation parameters, and the like. The RAM 113 temporarily stores programs used in the execution of processing by the CPU 111, parameters that change as appropriate during the execution, and the like. The RAM 113 can also be used to temporarily store RSS data acquired by the information processing apparatus 102 from the Web server 104 or the like. These are connected to each other by a host bus 114 including a CPU bus.

  The host bus 114 is connected to an external bus 116 such as a PCI (Peripheral Component Interconnect / interface) bus via a bridge 115.

  The input device 118 includes, for example, operation means such as a mouse, a keyboard, a touch panel, a button, a switch, and a lever, and an input control circuit that generates an input signal and outputs it to the CPU 111. The user of the information processing apparatus 102 can input various data and instruct processing operations to the information processing apparatus 102 by operating the input device 118.

  The output device 120 includes, for example, a CRT (Cathode Ray Tube) display device, a liquid crystal display (LCD) device, a display device such as a lamp, and an audio output device such as a speaker. A keyword object representing a keyword included in a blog article and a connection line connecting the keyword objects are displayed on the screen of the display device 120, which is an example of the output device 120. The relevance of is visualized.

  The HDD 121 is a data storage device configured as an example of a storage unit of the information processing apparatus 102 according to the present embodiment. The HDD 121 stores programs executed by the CPU 111 and various data. The HDD 121 stores various data such as RSS data and keywords.

  The drive 122 is a storage medium reader / writer, and is built in or externally attached to the information processing apparatus 102. The drive 122 stores contents on a removable storage medium such as a magnetic disk (such as HD), an optical disk (such as CD or DVD), a magneto-optical disk (such as MO), or a semiconductor memory loaded in the information processing apparatus 102. Record / play various data.

  Specifically, the drive 122 reads data stored in the removable storage medium and supplies the data to the RAM 113 connected via the interface 117, the external bus 116, the bridge 115, and the host bus 114. The CPU 111 stores these data in the HDD 121 or the like as necessary. On the other hand, the drive 122 receives data stored in the ROM 112 or the HDD 121, newly generated data, or data acquired from an external device from the CPU 111, and writes it to a removable storage medium.

  The connection port 124 is a port for connecting the information processing apparatus 102 and an external device, and has a connection terminal such as USB or IEEE1394. The connection port 124 is connected to the CPU 111 and the like via the interface 117, the external bus 116, the bridge 115, the host bus 114, and the like.

  The communication device 125 is a communication interface configured with a communication device or the like for connecting to the communication network 108, for example. The communication device 125 transmits and receives various data such as RSS data to and from an external device such as the Web server 104 via the communication network 108.

  The hardware configuration of the information processing apparatus 102 has been briefly described above. Next, the functional configuration of the information processing apparatus 102 will be described with reference to FIGS.

<Functional configuration of information processing apparatus>
As shown in FIG. 3, the information processing apparatus 102 includes a blog article collection unit 130, a category classification unit 132, a keyword extraction unit 134, a keyword storage unit 136, a keyword acquisition unit 138, a display control unit 140, a display information storage unit 142, and the like. Is mainly provided.

  The blog article collection unit 130 collects blog article text data from the Web servers 104 and 106 via the network 108. Specifically, the blog article collection unit 130 accesses the Web servers 104 and 106 at predetermined intervals, and acquires a plurality of blog articles that each of the Web servers 104 and 106 has as RSS-format XML data. The RSS format XML data may include information on a plurality of blog articles, and each blog article includes information such as a title, a summary, and an address.

  FIG. 4 shows an example of blog article information. Reference numeral 202 in FIG. 4 is an example of blog article information, and includes the blog article address (URL), title, and summary as blog article information. FIG. 5 shows an example of XML data in RSS format collected by the blog article collection unit 130. Reference numeral 302 in FIG. 5 is an example of XML data, and information on a plurality of blog articles is described in the XML format.

  The predetermined cycle can be arbitrarily set, for example, every hour or every day. In addition, the blog article collection unit 130 may collect blog articles at a predetermined time instead of every predetermined period, or whenever a new blog article is added to the Web server 104 or 106 or the like, You may make it acquire the newly added blog article. The blog article collection unit 130 provides the collected blog articles to the category classification unit 132.

  The category classification unit 132 classifies the blog articles collected by the blog article collection unit 130 into any of a plurality of predetermined categories. Specifically, the category classification unit 132 assigns each blog article acquired by the blog article collection unit 130 from the Web server 104 or the like to any of a plurality of predetermined categories such as business, sports, entertainment, and the like. Judge whether it belongs, and associate each blog post with the category to which the blog post belongs. The category classification unit 132 determines the category of each blog article using a known category classification technique based on the title and summary of the RSS-format blog article. The category classification unit 132 determines the category of the blog article and then provides the blog article to the keyword extraction unit 134.

  The keyword extraction unit 134 extracts keywords from the blog article text data acquired from the category classification unit 132. Specifically, the keyword extraction unit 134 extracts, for example, four types of nouns such as a unique object name, a person name, an organization name, and a place name as keywords from the title and summary of an RSS-format blog article. The keyword extraction unit 134 can extract a keyword from a blog article using a known keyword extraction technique such as morphological analysis or matching with a previously registered noun. In addition, the keyword extraction unit 134 may associate the extracted keyword with its type (a unique object name, a person name, an organization name, a place name, etc.) so that the type of the keyword can be known.

  FIG. 4 shows an example of keywords extracted from the blog article by the keyword extraction unit 134. The code | symbol 204 of FIG. 4 has shown the keyword extracted from the blog article 202, The some keyword contained in the blog article 202 and the kind of the keyword are matched. FIG. 5 shows an example of keywords extracted from RSS format XML data. Reference numeral 304 in FIG. 5 is an example of a keyword extracted from the XML data 302 of the blog article, and indicates a keyword extracted from the data with the <title> or <description> tag in the XML data 302. .

  The keyword extraction unit 134 associates the keyword extracted from the blog article, the category classification, and information on the blog article including the title and address of the blog article, and stores them in the keyword storage unit 136. Hereinafter, a keyword extracted from one blog article is referred to as a keyword group. Therefore, the keyword extraction unit 134 associates the keyword group, category classification, and blog article information and stores them in the keyword storage unit 136. At the time of storing, the keyword extracting unit 134 may know the order in which the blog articles to which the keyword group belongs are generated. Specifically, for example, the keyword extraction unit 134 stores the generation date and time of the blog article in association with the keyword group or the like, or stores the keyword group and the like in chronological order according to the date and time when the blog article was generated. Good.

  FIG. 5 shows an example of data stored in the keyword storage unit 136. Reference numeral 306 in FIG. 5 indicates data generated based on the keyword data 304 extracted from the XML data 302 and stored in the keyword accumulation unit 136. As shown in the figure, the keyword storage unit 136 stores the address, title, category classification, and keyword group including one or more keywords from the keyword extraction source blog article.

  The keyword extraction unit 134 may provide the keyword group, title, category classification, and address to the keyword acquisition unit 138 instead of storing them in the keyword storage unit 136.

  The keyword acquisition unit 138 sequentially acquires keyword groups including one or more keywords that are related to each other. Specifically, the keyword acquisition unit 138 sequentially acquires the keywords stored in the keyword accumulation unit 136 for each keyword group (in other words, for each blog article). When a plurality of keyword groups are stored in the keyword storage unit 136, the keyword acquisition unit 138 may sequentially acquire the blog articles to which the keyword group belongs, in ascending order of generation date / time. In addition, the keyword acquisition unit 138 acquires the address and category classification associated with the acquired keyword group from the keyword storage unit 136 together with the keyword group. The keyword acquisition unit 138 provides the acquired keyword group, address, and category classification to the display control unit 140. Note that the keyword acquisition unit 138 may acquire the keyword group, address, and category classification from the keyword extraction unit 134.

  The display control unit 140 sequentially displays a keyword object representing a keyword and a connection line connecting the keyword objects belonging to the same keyword group on the screen of the display device 120 for each keyword group. In the present embodiment, the display control unit 140 displays the keyword object on the screen of the display device 120 as an image in which a keyword character string is inserted into a figure such as a square or a circle (hereinafter, the display device 120). An image displayed on the screen and having a character string of a keyword inserted inside a figure is called a node). That is, in this embodiment, a keyword object representing a keyword is referred to as a node, and the node is composed of a graphic and a character string displayed inside the graphic. Further, the display control unit 140 displays an image that shows that the nodes are connected, such as a straight line or a curve, between the nodes belonging to the same keyword group, and connects the nodes. Hereinafter, the keyword object displayed on the screen of the display device 120 is referred to as a node, a connection line connecting the keyword objects is referred to as an edge, and the node and the edge are referred to as a node graph.

  FIG. 4 shows an example of a node graph composed of nodes and edges. Reference numeral 206 denotes a node graph generated from a keyword (reference numeral 204) extracted from the blog article 202. As shown in the figure, nodes corresponding to the three keywords extracted from the blog article 202 are connected to each other by edges to generate a node graph. By connecting the nodes to each other at the edge in this way, it is indicated that the keywords corresponding to the three nodes are keywords extracted from one blog article.

  The generation of the node graph by the display control unit 140 will be described in further detail. The display control unit 140 sequentially acquires keyword groups from the keyword acquisition unit, creates a node graph for each acquired keyword group, and displays the node graph on the screen of the display device 120. At that time, if the keyword for which the corresponding node is already displayed on the screen of the display device 120 is not in the keyword group, the display control unit 140 selects nodes corresponding to all the keywords included in the keyword group. A new image is displayed on the screen of the display device 120, and the nodes are connected by edges.

  On the other hand, if the keyword for which the corresponding node is already displayed on the screen of the display device 120 is in the keyword group, the display control unit 140 still has the corresponding node on the screen of the display device 120 in the keyword group. If there is a keyword that is not displayed, a node corresponding to the keyword is newly displayed on the display device. Then, the display control unit 140 connects the nodes belonging to one keyword group including the newly displayed node and the already displayed node to each other by an edge. Further, the display control unit 140 calculates the attractive force between the nodes connected by the edge, and calculates the repulsive force between each node belonging to the keyword group and all the nodes other than the node. Then, the display control unit 140 arranges each node at a position where the attractive force and the repulsive force are balanced. More specifically, the display control device 140 calculates the attractive force only between the nodes connected by the edge, and does not calculate the repulsive force only between the nodes connected by the edge. After calculating with all nodes except the node, the arrangement of each node is determined. The display control device 140 may calculate the attractive force and the repulsive force between the nodes connected by the edge, and may arrange each node at a position where the attractive force and the repulsive force are balanced.

For example, the node is arranged at a position where the attractive force and the repulsive force are balanced between the nodes as follows.
1. A node graph is added to or deleted from the two-dimensional space of the display device 120.
2. The force (attraction) in the edge direction extending from the node is calculated for all nodes having the edge.
2-a. The horizontal attractive force (a _emx ) and vertical attractive force (a _emy ) of the node m edge e are calculated by the following _equations .
a _emx = constant * length of edge e in the horizontal direction a _emy = constant * length of edge e in the vertical direction 2-b. The horizontal attractive force (a _mx ) and the vertical attractive force (a _my ) with all edges associated with the node m are calculated.

2-c. Calculate a _mx and a _my for all nodes.
3. Calculate the repulsive force (repulsive force) for all nodes.
3-a. The horizontal repulsive force (r _mnx ) and vertical repulsive force (r _mny ) of the nodes m and n are calculated by the following _equations .
r _mnx = constant / distance in the horizontal direction between node m and node n r _mny = constant / distance in the vertical direction between node m and node n 3-b. The repulsive force (r _mx , r _my ) with respect to all nodes other than the node m is calculated for the node m.

3-c. The horizontal repulsive force r _mx and the vertical repulsive force r _my are calculated for all nodes.
4). Calculate the sum of attractive and repulsive forces for all nodes.
4-a. For node m attraction _{(a mx,} a _my) and repulsion _{(r mx,} r _my) force obtained by adding the _{(f mx,} f _my) is calculated.
f _mx = a _mx + r _mx
f _my = a _my + r _my
4-b. Calculate f _mx and f _my for all nodes.
5). The moving distance d _{mx in} the horizontal direction and the moving distance d _my in the vertical direction are calculated, and the node is moved by that distance.
d _mx = constant * f _mx
d _my = constant * f _my
6). Repeat steps 2-4 until f _mx and f _my of all nodes are equal to or less than the threshold value.

In addition to the above, the attractive force can be obtained by the following calculation formula.
Attraction = constant * edge length to the nth power (n is a positive real number)
Attraction = constant * log (constant * edge length) (base of logarithm is greater than 1)
In addition to the above, the repulsive force can be obtained by the following calculation formula.
Repulsive force = constant / nth power of distance between nodes (n is a positive real number)
Repulsive force = constant * log (constant * distance between nodes) (base of logarithm is greater than 0 and less than 1)

  As described above, the display control unit 140 continuously arranges the node graph added to the display area of the display device 120, so that many nodes are connected by edges, and many nodes are calculated. Move to position simultaneously. Further, the display control unit 140 may display the progress of movement of each node, that is, the display control unit 140 may also draw a state in the middle of movement of each node. When the display control unit 140 performs such drawing processing, an animation in which a large number of nodes move simultaneously is realized. In this way, the display control unit 140 dynamically adds the node graph to the screen of the display device 120 and moves each node to the respective arrangement, thereby dynamically determining the relationship between the keywords. Can be displayed. With such dynamic display, users can intuitively understand the contents of blog articles that change with time, that is, topics on the Internet, relationships between topics, and changes in the relationships. Can be made. The display control unit 140 controls the arrangement of each node based on the repulsive force between the nodes as described above. More specifically, the display control unit 140 displays the attractive force between the figures constituting the node. The arrangement of nodes may be controlled based on the repulsive force. In this case, the object whose position is to be moved by the display control unit 140 is a figure, and the character string displayed inside the figure moves along with the figure. Further, the display control unit 140 may control the arrangement of the nodes based on the attractive force and the repulsive force between the character strings constituting the nodes. In this case, the object whose position is to be moved by the display control unit 140 is a character string, and the figure surrounding the character string moves along with the character string.

  Further, when the display control unit 140 newly displays a node on the screen of the display device 120, the first display position of each node (hereinafter, the first display position of each node is referred to as an appearance position). You may determine according to the category classification | category of the blog article to which the keyword corresponding to a node belongs. Specifically, for example, the screen of the display device 120 is divided into a plurality of areas in advance, and each area is associated with a category such as news, sports, entertainment, etc. Then, the display control device 140 may acquire the category classification together with the keyword group from the keyword acquisition unit 138, and may set an arbitrary position in the area corresponding to the category classification as the appearance position of the node belonging to the keyword group. The display control unit 140 may set the appearance position of each node in the area corresponding to the category classification as a fixed position, a random position determined by a random number, or the like. The display control unit 140 may set the appearance position of each node as a fixed position regardless of the category classification, a random position determined by a random number, an arbitrary position on the circumference, or the like.

  Further, the display control unit 140 stores the display state in the display state storage unit 142. The display state includes information related to the node displayed on the screen of the display device 120 and information related to the edge. 6A and 6B show an example of the display information stored in the display information storage unit 142. FIG. FIG. 6a shows information about nodes in the display information, and FIG. 6b shows information about edges.

  As shown in FIG. 6A, the information about the node includes, for example, a keyword 402 corresponding to the node currently displayed on the screen of the display device 120, a keyword type 404, the number of appearances 406 of each node, and the like. The total number of nodes displayed on the screen of the display device 120, the upper limit number of nodes that can be displayed on the screen of the display device 120, and the like may be included.

  When the display control unit 140 generates a node graph corresponding to the keyword group, each of the keywords included in the keyword group for which the node graph is to be generated and each of the keywords 402 stored in the display information storage unit 142 are displayed. It is possible to determine whether or not the keyword for which the corresponding node is already displayed is in the keyword group.

  The number of appearances is the number of times a keyword is included in a keyword group that is a basis for generating a node graph. When the display control unit 140 displays a node corresponding to the new keyword on the screen of the display device 120, the display information storage unit 142 stores the keyword, type, and appearance count “1” as the node information. . The display control unit 140 can hold the number of appearances of each keyword by counting up the number of appearances each time the same keyword is included in a new keyword group.

  Further, the display control unit 140 may refer to the number of appearances 406 of the nodes and display the nodes with different appearances according to the number of appearances of each node. The appearance of a node includes the size, shape, color, etc. of the node. More specifically, the appearance of a node includes the size, shape, color, and the like of the graphic that forms the node, and the font and color of the character string that forms the node. Specifically, for example, the display control unit 140 can change the color, shape (rectangle, triangle, circle, star, heart shape, etc.), size, or transparency of the figure according to the number of appearances. The display control unit 140 can change the font of the character string according to the number of appearances of the keyword. Font changes include font color changes, font thickness changes, font size changes, font changes, whether italic or not. When changing the color, especially using the hue of the HSB color model, the color of the figure or font may be set to be blue, green, yellow, orange, red from the node with the lowest number of appearances to the node with the highest number of appearances. . In addition, the shape, size, transparency, and font of the figure may be changed from a node with a low appearance frequency to a node with a high appearance frequency, similar to the color. The display control unit 140 may change the appearance of the node according to the ranking of the number of appearances. According to such a display, the user can grasp at a glance a keyword having a high appearance frequency.

  Further, the display control unit 140 may display graphics and fonts in different colors, shapes, sizes, etc. for each keyword type according to the type of keyword (organization name, person name, etc.) corresponding to the node. .

  In addition, the display control unit 140 further stores the date and time when each node first appears in the display information storage unit 142, and selects a node whose appearance date and time is low and whose appearance frequency is low from the display area of the display device 120. It may be deleted, and at that time, depending on the appearance date and time and the number of appearances, the node to be deleted is directly deleted by vibrating or changing the color lightly before actually deleting it. You may make it make a user recognize.

  In addition, when the number of nodes displayed in the display area of the display device 120 exceeds the upper limit number of displays included in the display information, the display control unit 140 deletes the nodes from the display area in descending order of the number of appearances 406. It may be. Further, when a node is deleted from the display area, an edge associated with the node may be deleted at the same time.

  Among the display information, as shown in FIG. 6b, the edge information includes the edge contents (keywords to which the edges are connected) 412, the address 413, the appearance date and time 414 of each edge, the appearance frequency 416 of the edge, and the like. It is. The total number of edges currently displayed on the screen of the display device 120, the upper limit number of edges that can be displayed on the screen of the display device 120, and the like may be included. The address 413 includes a blog article to which keywords corresponding to two nodes connected by the edge specified by the edge content 412 (in the example shown, Hanshin-Giant, Hanshin-Kanemoto, etc.) belong together. An address (URL) on the Internet is stored.

  The display control unit 140 may display the edge on the screen of the display device 120 as an icon that can be selected by an input device such as a keyboard or a mouse. When an edge is selected, the display control unit 140 identifies the selected edge from the information related to the edge stored in the display information storage unit 142, and selects an address associated with the identified edge. The web server 104 or the like may be acquired and accessed based on the address, and the blog article specified by the address may be acquired from the Web server 104 or the like and displayed on the screen of the display device 120. According to this configuration, the user selects an edge displayed on the screen of the display device 120 by double-clicking using the input device or the like, so that the node (keyword) to which the edge is connected is selected. You can see the blog article that is the source of the extraction with an internet browser.

  When the display control unit 140 generates a node graph corresponding to the keyword group, the keywords included in the keyword group for which the node graph is to be generated and the edge contents 412 stored in the display information storage unit 142 are displayed. By matching the keyword pair, it is determined whether the corresponding node pair is already displayed on the screen of the display device 120 and the keyword pair in which the nodes are connected by an edge is in the keyword group. be able to. When the edge is already displayed on the screen of the display device 120, the display control unit 140 rewrites the address of the corresponding edge in the display information storage unit 142 to the address of the latest blog article, and updates the appearance date and time. , Increase the number of appearances.

  In addition, the display control unit 140 may refer to the edge appearance frequency 416 included in the display information and display the edge appearance according to the appearance frequency. Edge appearance includes the total thickness of the edge, the thickness of both ends of the edge, the color of the edge, the type of edge (dotted line, broken line, double line, dash-dot line, two-dot chain line, curve, etc.) . Specifically, the display control unit 140 can change, for example, the color and shape of the edge according to the number of appearances. As the shape of the edge, for example, when the edge is a straight line or a curve connecting nodes, the thickness of the line and the thickness of both ends of the line can be changed. Moreover, you may change a straight line into a curve.

  The display control unit 140 may change the edge color according to the age of the edge. Specifically, the display control unit 140 obtains an elapsed time from the first display of the edge in the display area of the display device 120 based on the appearance date and time of each edge included in the display information at a predetermined interval, and the elapsed time The color of the edge can be changed according to. The display control unit 140 displays a certain edge in the display area of the display device 120 and then changes the color of the edge each time a new node graph is added to the display area of the display device 120 thereafter. May be. In this case, the first color (RGB value) and the last color are determined in advance, and the display control unit 140 changes the edge color from the first color to the last color each time a node graph is added. The color of the edge may be changed by changing each value linearly.

  Further, the display control unit 140 may provide a life for each edge and delete the edges from the display area of the display device 120 in order from the edge that has reached the end of the life. Specifically, the display control unit 140 first displays an edge in the display area, and when the number of node graphs added to the display area reaches a predetermined value, the edge is displayed in the display area. You may delete from. In addition, the display control unit 140 determines an edge display period in advance, obtains an elapsed time from the appearance of each edge based on the appearance date and time 414 included in the display information, and the elapsed time exceeds the predetermined display period. The deleted edge may be deleted from the display area. Alternatively, when the edge displayed in the display area of the display device 120 exceeds the display upper limit number of edges included in the display information, the display control unit 140 has an old edge of the appearance date / time 414 or a small number of appearances. You may make it delete from a display area in order from an edge. Furthermore, a node that does not have one edge as a result of deleting an edge from the display area may be deleted from the display area.

  In the above description, the elapsed time from the appearance of the edge on the screen has been described as the actual time calculated based on the appearance date and time of the edge included in the display information, but the present invention is not limited to such an example. . For example, after the edge appears on the screen, the count of the number of newly displayed node graphs corresponding to the keyword group may be handled as the elapsed time. Specifically, for example, when a new node graph is displayed on the screen every second, 10 node graphs are added on the screen when 10 seconds of real time have elapsed. The elapsed time by counting the number of node graphs displayed on the screen and the elapsed time by real time are the same. On the other hand, when a new node graph is displayed on the screen every 5 seconds, two node graphs are added on the screen when 10 seconds of real time have elapsed, so the node graph is displayed on the screen. The elapsed time by counting the number displayed in is 2 and is different from the actual time.

  The functional configuration of the information processing apparatus 102 has been described above. In the above embodiment, one information processing apparatus 102 performs collection of blog articles, category classification, keyword extraction, and display control on the display apparatus 120, but each process is distributed by a plurality of computers. You may make it perform. Next, a method for displaying a plurality of keywords related to each other executed by the information processing apparatus 102 will be described with reference to FIGS. 7 and 8.

<Keyword display method>
As shown in FIG. 7, the information processing apparatus 102 first collects blog articles existing on the Internet (S100). Next, the information processing apparatus 102 classifies the collected blog articles by category (S102). Specifically, as described above, the blog article is determined to correspond to one of a plurality of categories, and is associated therewith. Next, the information processing apparatus 102 extracts keywords from the blog article and stores them in a memory such as a RAM or a hard disk (S104). Specifically, as described above, keywords are extracted from the blog article, and keywords, titles, addresses, category classifications, and the like are stored in the keyword storage unit 136.

  Next, the information processing apparatus 102 extracts keywords included in one blog article from the memory (S106). The information processing apparatus 102 generates a node graph including nodes corresponding to the extracted keywords and edges connecting the nodes, and displays the generated node graph on the screen of the display apparatus 120 (S108).

  Based on FIG. 8, the step S108 of FIG. 7 will be described in detail. First, the information processing apparatus 102 determines whether there is a keyword whose corresponding node is not yet displayed on the screen of the display apparatus 120 in the keyword group that is the basis of the node graph to be generated (S200). For example, the display control unit 140 can make the determination with reference to the display information stored in the display information storage unit 142 as described above. If there is, the display control unit 140 determines the appearance position of the node corresponding to the keyword according to the category classification of the blog to which the keyword to be displayed belongs (S202). Then, the display control unit 140 displays the node corresponding to the display target keyword at the appearance position determined in S202 (S204). On the other hand, if there is no keyword that is not yet displayed in the keyword group in S200, since there is no keyword to be newly displayed on the screen of the display device 120, the process proceeds to S206 without performing S202 and S204.

  In S206, the information processing apparatus 102 connects nodes belonging to the same blog article with an edge (S206). Specifically, the information processing apparatus 102 connects the nodes at the edge, including the node that has already been displayed on the screen of the display apparatus 120 and the node that has been newly displayed in S204. Then, in the determination in S200, when there is a keyword for which the corresponding node has already been displayed, the information processing apparatus 102 will add each edge added this time and each edge extending from the nodes at both ends of the edge. , The attractive force between the nodes at both ends of the edge is calculated (S208). Further, the information processing apparatus 102 calculates the repulsive force for each node with respect to all nodes other than that node (S210). Then, for each edge, each node is moved to a position where the attractive force and the repulsive force between the nodes are balanced (S212). S208 to S212 can be performed using the above-described calculation formulas. In the above description, the information processing apparatus 102 determines the attractive force and repulsive force between the nodes when the corresponding node already exists on the screen of the display device 120 as a result of the determination in S200. Although the calculation has been described so that each node is arranged according to the calculation result, the present invention is not limited to such an example. For example, as a result of the determination in S200, the information processing apparatus 102 corresponds to all the keywords in the keyword group when the corresponding node does not already exist in the keyword group on the screen of the display apparatus 120. Even when a node is newly added on the screen, the repulsive force between the newly added node and all other nodes is calculated, and each node is arranged according to the calculation result. May be.

  A display example of the display device 120 when the information processing apparatus 102 displays a node graph and arranges each node at a position calculated according to the attractive force and the repulsive force between the nodes will be described with reference to FIG. 9a, 9b, and 9c show how node graphs are added to the display area 502 of the display device 120. FIG.

  As shown in FIG. 9 a, a node graph is first displayed in the display area 502. The node graph includes a node a corresponding to the keyword “Hanshin”, a node b corresponding to the keyword “giant”, and an edge 5022 connecting the node a and the node b. From this node graph, the user can grasp that there is a blog article that includes both the keywords “Hanshin” and “Giant”.

  A node graph generated based on a blog article including the keyword “Hanshin” and the keyword “Kanemoto” is added to the display area 502 in the above state. Since the node corresponding to the keyword “Hanshin” has already been displayed as the node a, a node corresponding to the keyword “Kanamoto” (hereinafter referred to as node c) is newly added to the display area 502, and the nodes a and c Are connected by an edge 5026.

  Turning to FIG. 9b. A node graph generated based on a blog article including the keyword “Shinjo” and the keyword “Nippon Ham” is added to the display area 502 in a state where three nodes a, b, and c are displayed. In this case, since the node corresponding to either keyword is not yet displayed in the display area 502, the node d corresponding to the keyword “Nippon Ham”, the node e corresponding to the keyword “Shinjo”, the node d and the node An edge 5032 connecting “e” is newly displayed in the display area 502.

  Turning to FIG. 9c. A node graph generated based on a blog article including the keyword “Shinjo”, the keyword “Hanshin”, and the keyword “Giant” is displayed in a display area 502 in which five nodes a, b, c, d, and e are displayed. to add. In this case, the nodes corresponding to all the keywords are already displayed in the display area 502. Therefore, an edge 5038 that connects the node a and the node e and an edge 5036 that connects the node b and the node e are newly added to the display area 502 without adding a new node. Then, the attractive force between the nodes at both ends of each edge, including newly added edge 5038 and edge 5036, and edge 5026, edge 5022 and edge 5033 extending from the edge 5038 or nodes at both ends of edge 5036, respectively. The position of each node is determined based on the repulsive force between each node belonging to the newly added node graph and all other nodes. Then, as shown in FIG. 9c, in the display area 502, each node moves toward a predetermined position and stops at the predetermined position.

  By displaying the node graph in the display area 502 as described above, the user can visually grasp an enormous amount of continuously generated information such as blog articles. Further, as each node moves as described above, the user can intuitively grasp the change in the relevance of information.

  The method for displaying a plurality of keywords related to each other executed by the information processing apparatus 102 has been described above. Next, based on FIG. 10, a method for the information processing apparatus 102 to delete a node displayed on the screen of the display apparatus 120 will be described.

<How to delete a node>
As shown in FIG. 10, when the information processing apparatus 102 adds a node to the display area of the display apparatus 120 at predetermined intervals or newly, the number of nodes displayed in the display area exceeds the upper limit number. It is determined whether or not (S300). If it exceeds, the information processing apparatus 102 subtracts the appearance count of all nodes by 1 (S302). Specifically, for example, by referring to the number of appearances of each node stored in the display information storage unit 142, one is subtracted from the number of appearances of each node. Then, it is determined whether there is a node whose appearance count is 0 (S304). If not, the process returns to S302, and one more is subtracted from the number of appearances of each node. The process of subtracting 1 from the number of appearances is continued until a node with the appearance number 0 appears. If the result of determination in S304 is that there is a node whose appearance count is 0, the node whose appearance count is 0 and the edge associated with the node are deleted (S306). According to this deletion method, the nodes are deleted in order from the node with the lowest appearance frequency. As above, the method in which the information processing apparatus 102 deletes the node displayed on the screen of the display apparatus 120 has been described.

  11 and 12 show specific examples of node graphs displayed on the screen of the display device 120 by the information processing apparatus 102 according to the present embodiment.

  The information processing apparatus 102 according to the present embodiment has been described above. According to the information processing apparatus 102, related information can be displayed in the form of a node graph in the display area of the display apparatus 120. By presenting keywords extracted from blog articles in the form of a node graph, it is possible to provide the user with an opportunity to discover unknown blog articles according to user preferences. Moreover, if blog articles are collected, keyword extraction, and node graph display are performed in almost real time each time a blog article is registered in the Web server 104 or the like, popular keywords that are frequently described in blog articles on the Internet now. Can be notified to the user.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  For example, in the above embodiment, the node is an image in which a character string of a keyword is inserted inside a figure, but the present invention is not limited to such an example. The node may be an icon including a keyword character string, for example. For example, by right-clicking a node, the titles of edges (blog articles) associated with the node may be displayed in a list. Further, by double-clicking a node (graphic or character string), a keyword corresponding to the node may be searched at a search site. Alternatively, the node may be grasped by single-clicking the node, and the node may be moved in the two-dimensional space by dragging the mouse. It may be possible to pause a dynamically moving node by hovering the mouse over the node. Furthermore, by right-clicking an edge, it may be possible to display a list of titles of node graphs (blog articles) that have appeared in the past, including nodes at both ends of the edge. Further, the viewpoint of the two-dimensional space may be zoomed in by rotating the mouse wheel forward, and the viewpoint of the two-dimensional space may be zoomed out by rotating the mouse wheel backward.

  In the above embodiment, the appearance of the node is changed according to the appearance frequency and type of the keyword. However, the present invention is not limited to this example. For example, when a node appears or when a new edge is connected to a node that is already displayed on the screen, the sound effect is output. Depending on the frequency and type of the keyword, the sound effect of the node is output. May be changed.

  In the above embodiment, the appearance of the node and the edge changes according to the appearance frequency and type of the keyword and the elapsed time after the node and the edge appear on the screen. In the above embodiment, the appearance position of the node is changed according to the category of the keyword group (blog article). However, the present invention is not limited to such an example. For example, the appearance position of the corresponding node may be changed according to the type of keyword. Further, the appearance of the node corresponding to the keyword belonging to the keyword group may be changed according to the category of the keyword group (blog article). Further, according to the category, a force in a specific direction determined for each category may be applied to the node, and the position of the node may be changed by the force applied to the node. Further, the moving speed of the nodes and edges may be changed according to the elapsed time. Specifically, for example, when a node is moved to a position calculated by attractive force and repulsive force, the elapsed time may be longer and the older node may be slower to move. Also, specific keywords such as NG words and sponsor words may be determined in advance, and nodes corresponding to the specific keywords may be displayed with a different appearance from other nodes.

  In addition, when a new keyword group is added to the screen as a node graph, the keyword character string corresponding to each node is converted to speech and output, and each time a new node graph is added The keyword may be read out by synthesized speech. In addition, when a new keyword group is added as a node graph on the screen, a new node and a node belonging to the keyword group including the newly appearing node and the node that has already been displayed on the screen are newly added. Edges may be highlighted. The highlighting can be performed, for example, by displaying the corresponding node and edge in a color different from the display colors of other nodes and edges, or by blinking. By highlighting, it is possible to alert the user to the newly added node graph. The period of highlighting can be, for example, a certain period after the start of highlighting, or until a node graph corresponding to a predetermined number of keyword groups is further added on the screen after the highlighting starts.

  In the above embodiment, as data to be visualized, a keyword extracted from a blog article is used as a node and an address (URL) of the blog article is used as an edge. However, the present invention is not limited to this example. For example, the blog article (URL) may be a node, the trackback link may be an edge, and the trackback link relationship may be visualized. According to the configuration, it is possible to let the user grasp the relationship between blog articles and inform the user of articles that are tracked back (= topic articles).

  Further, the relationship between the blog sites may be visualized using the blog site (URL) as a node and the trackback link as an edge. According to the configuration, the user can grasp the relationship between the blog sites, and the user can find a group (community) of the blog sites that are well tracked back.

  Alternatively, the music playback history (play list) may be visualized by connecting the songs that were heard before and after the song as a node and connecting the songs with edges. According to the configuration, it is possible to visualize the songs that are being listened to together and to let the user understand the songs that are being listened to (songs that have similar hobbies).

  Alternatively, the music playback history (playlist) may be visualized by connecting the artists of the songs heard before and after with the edges as artists. According to the configuration, the artist can be visualized from the songs that are being listened to together, and the user can be made aware of the artist that is being listened to (= an artist with similar hobbies).

  Alternatively, a television program or VOD (Video On Demand) content may be used as a node, and the viewing history of the television program or the like may be visualized by connecting the television program or VOD content viewed before and after in time. According to the configuration, television programs and VOD contents that have been frequently watched recently, and TV programs and VOD contents that have been watched together can be visualized so that the user can understand the TV programs and VOD contents that are related to each other. Can do. In addition, users can meet unknown TV programs and VOD content.

  Alternatively, the product purchase history may be visualized by connecting the products purchased together with edges using products as nodes. According to the configuration, it is possible to visually grasp the products currently sold, and to give the user an opportunity to meet with products that the user does not know.

  In addition, a social network may be visualized with a person as a node and a connection between people as an edge. According to the configuration, it is possible to visualize a network between people such as a social network, and to allow the user to grasp the human relationship and the relationship between communities.

1 is an overall view showing an information processing apparatus according to an embodiment of the present invention. It is a block diagram which shows the hardware constitutions of the information processing apparatus in the embodiment. It is a block diagram which shows the function structure of the information processing apparatus in the embodiment. It is explanatory drawing which shows the example of generation | occurrence | production of the node graph in the embodiment. It is explanatory drawing which shows the specific examples of RSS data etc. in the embodiment. It is explanatory drawing which shows the specific example of the display information in the embodiment. It is explanatory drawing which shows the specific example of the display information in the embodiment. It is a flowchart which shows the keyword display method in the embodiment. It is a flowchart which shows a part of keyword display method in the same embodiment in detail. It is explanatory drawing which shows the specific example of the keyword display in the embodiment. It is explanatory drawing which shows the specific example of the keyword display in the embodiment. It is explanatory drawing which shows the specific example of the keyword display in the embodiment. It is a flowchart which shows the keyword deletion method in the embodiment. It is explanatory drawing which shows the specific example of the node graph displayed on the screen of the display apparatus in the embodiment. It is explanatory drawing which shows the specific example of the node graph displayed on the screen of the display apparatus in the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 102 Information processing apparatus 104,106 Web server 108 Network 120 Display apparatus 130 Blog article collection part 132 Category classification part 134 Keyword extraction part 136 Keyword storage part 138 Keyword acquisition part 140 Display control part 142 Display information storage part

Claims (15)

In an information processing device that displays a plurality of keywords that are related to each other:
A keyword acquisition unit that sequentially acquires a keyword group including one or more keywords that are mutually related;
A display control unit that sequentially displays a keyword object representing the keyword and a connection line connecting the keyword objects belonging to the same keyword group on the screen of the display device for each keyword group;
A display information storage unit for storing a keyword corresponding to the keyword object displayed on the screen of the display device;
With
The display control unit
If a keyword corresponding to a keyword object already displayed on the screen of the display device is in the keyword group,
If there is a keyword that is not yet displayed on the screen of the display device in the keyword group, a keyword object of the keyword is newly displayed on the screen of the display device, and the newly displayed keyword object and the already displayed keyword object are displayed. The keyword objects belonging to the keyword group including the keyword object being connected are mutually connected by the connection line, and the attractive force and the repulsive force between the keyword objects connected by the connection line are calculated, and the attractive force and the repulsive force are calculated. An information processing apparatus, wherein the keyword objects are arranged at positions that balance each other.   The display control unit arranges each keyword object from a position of each keyword object before being arranged at a position determined by the attractive force and the repulsive force to a position determined by the attractive force and the repulsive force. The information processing apparatus according to claim 1, wherein the information processing apparatus performs the display while displaying a progress of the movement of each keyword object.   The information processing apparatus according to claim 1, wherein the display control unit changes an appearance of the keyword object according to an appearance frequency of the keyword.   The information processing apparatus according to claim 1, wherein the display control unit changes an appearance of the keyword object according to a type of the keyword.   The information according to claim 1, wherein the display control unit changes an appearance of the connection line in accordance with an elapsed time since the connection line is first displayed on the screen of the display device. Processing equipment. A category classification unit for classifying the keyword group into any one of a plurality of categories;
The display control unit determines an appearance position that is a position when the keyword object of the keyword is first displayed on the screen of the display device according to the category of the keyword group to which the keyword belongs. The information processing apparatus according to claim 1.   The information according to claim 1, wherein the display control unit determines an appearance position, which is a position when the keyword object of the keyword is first displayed on the screen of the display device, using a random number. Processing equipment.   The display control unit determines in advance a maximum number of the keyword objects to be displayed on the screen of the display device, and appears when the keyword objects displayed on the screen of the display device exceed the maximum number. The information processing apparatus according to claim 1, wherein the information objects are deleted from the screen of the display device in order from a keyword object of a keyword with a low frequency.   The display control unit determines in advance a maximum number of the connection lines to be displayed on the screen of the display device, and when the connection line displayed on the screen of the display device exceeds the maximum number, 2. The information processing apparatus according to claim 1, wherein the connection line is deleted from the screen of the display device in order from the connection line having a long elapsed time since the connection line was first displayed on the screen of the display device.   The information processing apparatus according to claim 1, wherein the keyword group includes keywords extracted from text data of one article in the weblog.   The information processing apparatus according to claim 10, further comprising a keyword extraction unit that extracts the keyword from text data of an article of the web log.   The information processing apparatus according to claim 10, further comprising a blog article collection unit that collects text data of the article of the web log from a web server connected via a network.   The information processing apparatus according to claim 10, wherein the connection line is linked to an article of the web log to which the two keywords connected by the connection line belong together. Computer
A keyword acquisition unit that sequentially acquires a keyword group including one or more keywords that are mutually related;
A display control unit that sequentially displays a keyword object representing the keyword and a connection line connecting the keyword objects belonging to the same keyword group on the screen of the display device for each keyword group;
A display information storage unit for storing a keyword corresponding to the keyword object displayed on the screen of the display device;
With
The display control unit
If a keyword corresponding to a keyword object already displayed on the screen of the display device is in the keyword group,
If there is a keyword that is not yet displayed on the screen of the display device in the keyword group, the keyword object of the keyword is newly displayed on the display device, and the newly displayed keyword object and the already displayed keyword object are displayed. A position where keyword objects including the keyword object are connected to each other by the connection line, and an attractive force and a repulsive force between the keyword objects connected by the connection line are calculated, and the attractive force and the repulsive force are balanced. A computer program that causes an information processing device to function as an information processing device, wherein the keyword objects are arranged on a computer. In an information processing method that displays a plurality of keywords that are related to each other:
A keyword acquisition step for sequentially acquiring a keyword group including one or more keywords that are mutually related;
A display control step of sequentially displaying a keyword object representing the keyword and a connection line connecting the keyword objects belonging to the same keyword group on the screen of the display device for each keyword group;
Including
The display control step includes:
If a keyword corresponding to a keyword object already displayed on the screen of the display device is in the keyword group,
If there is a keyword that is not yet displayed on the screen of the display device in the keyword group, a keyword object of the keyword is newly displayed on the screen of the display device, and the newly displayed keyword object and the already displayed keyword object are displayed. Connecting the keyword objects belonging to the keyword group including the keyword objects being connected to each other by the connection line;
Calculating an attractive force and a repulsive force between the keyword objects connected by the connection line;
Arranging each of the keyword objects at a position where the attractive force and the repulsive force are balanced;
An information processing method comprising: