CN110633341A - Apparatus and method for content recommendation based on time and geographic information - Google Patents
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Abstract
The invention discloses a device and a method for recommending content based on time and geographic information. An apparatus for recommending map elements: an acquisition device for acquiring a node time and/or a node location of a first node of a first map element; retrieving means for retrieving a second node of a map element having the same time as or similar to the node of the first node and/or a third node of a map element having the same location as or similar to the node of the first node, according to a predetermined rule; and a returning means for returning the retrieved second node and/or the third node.
Description
Technical Field
The present invention relates to computer map technology, and more particularly, to an apparatus and method for time and geographic information based content recommendation for computer maps.
Background
Many computer applications or services are related to maps, such as the map service offered by google corporation (accessible via http:// maps. google. com). To provide these services, there are known techniques for digitizing or digitizing conventional maps, rendered on conventional media such as paper, or the like, so as to be stored in a computer-readable storage medium and accessible, analyzed, and processed by a computer processor.
Users desire to search and obtain recommendations related to their desired map information when browsing and viewing digitized maps via the display screen of a computing device (e.g., personal computer, tablet, cell phone, etc.). For example, when a user searches for the name of a restaurant using a mapping application, the application returns the restaurant's location information on the map, while providing (and "recommending") information related to the restaurant (e.g., photographs taken and uploaded of the restaurant by consumers who have visited the restaurant, and ratings of the restaurant by the consumers). Alternatively, the user may search on the map with a more general keyword (e.g., "bank"), in which case the mapping application will typically return all banking institutions in the area of interest to the user.
A typical mode of the search process of the conventional map application is as follows. The user first selects a geographic area of interest (e.g., the sunny outdoor area of beijing). Some mapping applications allow a user to enter specific longitudes and latitudes to locate an area of interest to the user. The user may use a mouse to drag the map to reach the area of interest to the user. The user can then select an appropriate display accuracy by enlarging or reducing the display accuracy of the map through mouse or keyboard operations. The user then enters a search keyword and the map application displays map elements associated with the keyword within the area of interest to the user.
The prior art map application also provides a content recommendation function. Some map elements (e.g., famous tourist attractions such as the "home palace") have already been registered (or stored) in the map. When a user clicks a registered map element through mouse operation, the map application searches and displays a search result in the background by using the name of the element as a keyword. The map application may also display a "nearby" button below the search bar. After the user clicks on this button, the map application displays (i.e., recommends) other map elements in the vicinity of the map element, such as nearby parking lots, banks, etc.
However, the search and recommendation functions of the prior art maps are based on maps that present the current situation, i.e., the search and recommendation functions are limited to a single time dimension.
Disclosure of Invention
One aspect of the present invention is an apparatus for recommending map elements, including: an acquisition device for acquiring a node time and/or a node location of a first node of a first map element; retrieving means for retrieving a second node of a map element having the same time as or similar to the node of the first node and/or a third node of a map element having the same location as or similar to the node of the first node, according to a predetermined rule; and a returning means for returning the retrieved second node and/or the third node.
Another aspect of the present invention is an apparatus for displaying a map on a display screen, comprising: means for providing a first map corresponding to a first time or a first time period for display on the display screen; and means for providing a second map corresponding to a second time or a second time period for display on the display screen in superimposition with the first map.
Another aspect of the present invention is a method for recommending map elements, comprising: acquiring node time and/or node location of a first node of a first map element; according to a preset rule, retrieving a second node of a map element which is the same as or similar to the node time of the first node and/or a third node of the map element which is the same as or similar to the node place of the first node; and returning the retrieved second node and/or the third node.
Another aspect of the present invention is a method for displaying a map on a display screen, comprising: providing a first map corresponding to a first time or a first time period for display on the display screen; and providing a second map corresponding to a second time or a second time period for display on the display screen in superimposition with the first map.
Another aspect of the present invention is a computer readable medium having stored thereon computer readable instructions which, when executed by a computer, are capable of performing the method of the embodiments of the present invention.
Drawings
Fig. 1 illustrates a plurality of elements returned based on a keyword input by a user, which have an association relationship with the keyword input by the user, according to an embodiment of the present invention.
FIG. 2 illustrates details of returned elements displayed on a user's computing device, according to an embodiment of the invention.
FIG. 3 illustrates returned nodes at the same or similar time and same or similar location displayed on a user's computing device, in accordance with embodiments of the present invention.
Detailed Description
The content of the invention will now be discussed with reference to a number of exemplary embodiments. It is to be understood that these examples are discussed only to enable those of ordinary skill in the art to better understand and thus implement the teachings of the present invention, and are not meant to imply any limitations on the scope of the invention.
As used herein, the term "include" and its variants are to be read as open-ended terms meaning "including, but not limited to. The term "based on" is to be read as "based, at least in part, on". The terms "one embodiment" and "an embodiment" are to be read as "at least one embodiment". The term "another embodiment" is to be read as "at least one other embodiment". As used herein, the term "task" may refer to any kind of executable unit, including but not limited to a process, a thread, a module, or a collection thereof.
Embodiments of the present invention store maps for different historical times (e.g., the current latest map, the map of 1949, the map of 44 years before the c.c.). The historical map may be obtained by digitizing a map from a conventional historical material by means of known techniques, and may be stored in a map database according to one embodiment of the invention. The user may directly select a map displaying a certain historical time point, or may input a specific year to search for a map corresponding to the year. If the history map corresponding to the specific year is not stored, the map closest to the year among the stored history maps may be selected and displayed, and this information may be notified to the user. Preferably, the current up-to-date map is always displayed on the screen of the user's computing device, and when the user selects a map of a certain year or age, the history map is displayed superimposed on the current up-to-date map. Alternatively, a historical map of a certain year or year may be displayed all the time on the screen of the user's computing device, and when the user selects a map of another year or year, the map selected by the user is displayed superimposed on the previous historical map. This overlay display preferably displays the user-selected map in a semi-transparent manner, or in a different color. Preferably, three or more maps with different historical times can be displayed in a superimposed manner at the same time.
Embodiments of the present invention store a number of map elements (or simply "elements"). Elements are typically objects that are of interest to a user when browsing or searching a map. An element may be, for example, a place, a person, or an event. Each element has its name, for example the name of a person element. Each element has its description, for example, a simple introduction to a place, person, or event.
For one element, embodiments of the present invention store a plurality of "nodes" associated therewith. Each node is associated with a unique identifier for the element (e.g., a serial number that is automatically generated by the system) (e.g., the identifier for the element may be stored in a data structure of the node, or the association may be otherwise implemented). For example, for a character element, a plurality of nodes may be defined by their average significant points in time or time periods, i.e., each node is associated with a particular point in time or time period (collectively "node time"). Each node has its name. The node name of a person element may be a generalized description of the person's behavior or history recorded in the node. The behavior or history of the person at the point in time or over the period of time may be stored in association with each node, for example, said behavior or history may be described and stored in the form of a text message, referred to as a "node description"; node descriptions are typically more detailed than node names. Information of a place or a geographical area (collectively referred to as "node place") where the related behavior or history of the character at the corresponding time point or time period occurs may also be stored in association with the node of the character element. A historical person may have names (e.g., zhuguang also referred to as "Zhuchaiming," "Zhugeniu minister") that are stored in association with the person element. The node name, the node description, the node location, the node time, and the element name of the element storing the node may be collectively referred to as information of the node.
For example, for a place element, a plurality of nodes may be defined according to a time point or a time period of a historical event occurring at the place. Each node of a place element is associated with geographic location information for the place. Similarly, each node of a place element may have a node name and a node description. Similar to a people node, the node name of a place may be, for example, a brief description of a significant event or related historical people's behavior occurring at a corresponding point in time or time on the place, while the node description of a place may be a more detailed description of the event or people's behavior. A place may have multiple names (e.g., beijing also referred to as "grand prefecture," "beiping," etc. at different historical stages) that are stored in association with the place element.
For another example, for an event element, a plurality of nodes may be defined according to important time points or time periods in the event occurrence process, and each node has its node name and node description. Historical events (including their different stages) may be related to historical people or places. Thus, for a node of an event element, its node name and node description may include descriptions of related persons, places, and events, and the node is preferably stored in association with information of the related places.
In the embodiment of the invention, different nodes of the same element can be organized in a linked list mode according to the time sequence, so that each node in the linked list is closest to the adjacent node in time. In the linked list, each node has a node identifier (e.g., sequence number) in its chronological order. Other data structures may also be selected to organize different nodes of the same element in chronological order; whatever data structure is used, it is guaranteed that all nodes are associated with the element (e.g., an identifier of the element is stored in each node), and each node may also have a node identifier.
In an embodiment of the present invention, information of elements and their nodes may be stored in a database (hereinafter referred to as "element database"). In various embodiments, the element database may be a single database or multiple databases may be used. The element database may or may not be the same as the data source used to store the map. According to one embodiment of the invention, information of an element and its node may be stored in a mongodb database, where the location of the node may be stored using a data structure in geojson format.
According to an embodiment of the present invention, a user may input keywords, which the user wants to search, in a map application according to the present invention installed and running on a computing device through the computing device (e.g., a personal computer, a tablet computer, a smartphone, etc.). The map application receives keywords input by a user and transmits the keywords to an application server of a provider (e.g., google company) running the map application through a communication network (e.g., internet). After the application server carries out relevant processing, the key words are provided for the element database for retrieval. The search of the element database may be performed using a known search algorithm according to the type of the database (e.g., a relational database or an image database). The element database returns the keyword search results to the application server, which returns the keyword search results further to the user's computing device and into the map application displayed thereon.
According to the embodiment of the invention, the keyword retrieval result returned by the element database may comprise a plurality of elements which have association relation with the keyword input by the user. For example, as shown in FIG. 1, the user enters the keyword "Newton" and the element database may return "Isaac Newton" (presumably the most well-known of the historical characters having the last name "Newton") and other historical characters having the same last name (e.g., "John Newton", "Cris Newton", etc.), and may also return "Newton" as a physical unit.
Embodiments of the invention may rank the display locations of the multiple elements in the keyword search results in the mapping application on the user computing device by a given criterion (e.g., in a common list) to facilitate user browsing and selection (e.g., in a list). For example, by how close the association between the element and the keyword is, or by the number of times each element itself is retrieved, etc. This is advantageous for the user when using a smaller screen computing device.
The embodiment of the invention can simultaneously display icons corresponding to elements in the keyword search result on the map, as shown in fig. 1. The location at which the icon is displayed may be determined according to a given parameter, such as a location associated with the first or most important node of the element, or a location stored in direct association with the element (e.g., where the most important stage of the event element occurred). When a user moves a mouse over an icon, the element name of the element can be simultaneously shown for the user to refer to, which is very beneficial for the user to operate especially when the user uses a computing device with a small screen.
The embodiment of the invention can simultaneously display a time axis on the map and display the time points corresponding to the elements in the keyword search result on the time axis. The time corresponding to the time point may be determined according to a given parameter, for example, may be the time of the first node of the element, or the time of the most important node of the element. When a user clicks on a point in time, for example with a mouse, the element's name may be displayed and the icon corresponding to the element may be moved on the map as appropriate (e.g., to an intermediate position on the map). The icon may also be slightly enlarged at this time. These means are to facilitate the user to see the icon more clearly and click the icon faster and more accurately. When the mouse of the user moves past a certain search result or icon, the time point corresponding to the result or icon on the time axis can change color or be enlarged, so that the user can quickly see the time corresponding to the element.
When the user moves the mouse to slightly stop (which can be regarded as a choice) on an element in the keyword search result list, the map application can move in a targeted manner, and an icon corresponding to the element is displayed in the center of the map and slightly enlarged, so that the user can see the icon more clearly and click the icon more quickly and accurately.
According to an embodiment of the present invention, in the search result for a certain keyword, the user may click (also may be considered as a selection) on his computing device on the element of interest (or its corresponding icon). The map application determines the element that was clicked on and then retrieves it, for example by its identifier, via the map service provider's application server and the element database to obtain and return detailed information for the element, such as the element name, the element description, the node names and node descriptions of all the nodes of the element. In embodiments of the present invention, when a user clicks on an element of interest, the map application simultaneously displays the historical map with the best correspondence to the element. This best correspondence may be, for example, that the time of the map is closest to the node time of the first or most important node of the element. The historical map can be displayed independently, the historical map can be displayed on the current map in an overlapping mode, and the current map can be displayed on the historical map in an overlapping mode.
As shown in FIG. 2, details of the returned elements are displayed on the user's computing device. The node names of the multiple nodes of the element can be displayed in a map application on the user computing device in a list mode according to the time sequence, so that a user can visually see the sequence of the historical events and can find interested nodes quickly. Icons corresponding to the respective nodes of the elements may also be displayed on the map at the same time. The location of the icon display may be determined according to a given parameter, for example, may be a location associated with a node. When the positions associated with the nodes are the same or close (the proximity can be determined according to a preset rule, for example, when the distance between the display positions of two icons on a map with a given resolution is smaller than a preset distance threshold, the icons are considered to be very close), the icons corresponding to the nodes are merged into one icon, and the number of the nodes contained in the icon is displayed. Clicking on an icon containing multiple nodes can display the node names of the multiple nodes contained in the icon, which is very beneficial for the user when using a smaller screen computing device.
The embodiment of the invention can simultaneously display a time axis on the map and display the node time corresponding to each node of the element on the time axis. The user's point in time for each node may operate similarly to the point in time described above for the different elements.
According to embodiments of the present invention, a user may click on a node of interest among nodes of an element displayed on their computing device (e.g., click on a node name, click on an icon on a map to which the node corresponds, or click on a point in time on a timeline). The map application determines the node that was clicked on and then retrieves it via the map service provider's application server and the element database, for example, with the identifier of the node and the identifier of the element to which the node belongs, to obtain and return detailed information for the node, such as the node name, the node description, the node time, and the node location.
According to embodiments of the present invention, other nodes related to the node clicked by the user may be retrieved from the element database and displayed on the map application of the user computing device according to predetermined rules. Examples of predetermined rules include:
(1) the time rule is as follows: and searching the nodes which are the same or similar in time of other elements according to the node time of the node clicked by the user. The returned result may be the node name of the retrieved node and the element name of the element to which the node belongs.
(2) And (3) spatial regulation: and searching the same or similar nodes on the positions of other elements according to the node time of the node clicked by the user. The returned result may be the node name of the retrieved node and the element name of the element to which the node belongs.
The time of the two nodes is the same, and can be judged according to a preset rule; for example, they may be the same year (if the time of two nodes is only accurate to year), they may be the same year and month, they may overlap, or they may be one time point in another time period. The time closeness of two nodes can also be judged according to a predetermined rule, for example, the difference between two years is less than 3 years.
The same location of the two nodes can be judged according to a preset rule; for example, the determination may be made based on whether the display positions of the two nodes on a map of a given resolution are the same. The proximity of the locations of the two nodes can also be determined according to a predetermined rule, for example, the proximity of the locations can be determined according to the locations of the nodes associated with the nodes, and if the distance between the display positions of the two nodes on the map with the given resolution is smaller than a preset distance threshold, the two nodes can be determined as being close in location. For example, according to an embodiment of the present invention, the node location of a node is stored in the format of geojson data, so that distance calculation can be performed by using data in the mongodb database (e.g., geographical index of the mongodb database), and then a node whose distance between two nodes is smaller than a preset distance threshold is found from the calculation result.
As shown in fig. 3, for the node selected by the user, the node with the same or similar time and the node with the same or similar place can be retrieved and returned according to the time rule and the space rule at the same time, and displayed on the computing device of the user. Preferably, the nodes with the same time and the same location and the same place can be displayed in two lists, respectively, and the user switches between the two lists. The node names, node times and node locations of the returned nodes may be displayed in a list on the one hand (the user may click on these information to view detailed information of a certain returned node), and the locations of the nodes may be displayed on the map in an icon manner (the user may click on detailed information of the corresponding nodes), preferably in a different manner than the nodes of the element originally selected by the user (e.g., in a different color to distinguish the returned node from the nodes of the element).
Embodiments of the present invention store time and place information of elements in a nodal manner by means of maps of different historical times, thereby establishing associations of nodes of different elements in time or place. The user can conveniently obtain the recommendation of the nodes of other elements which are related in time or place from a certain node of an element without active search.
The system, method and apparatus of the embodiments of the present invention can be implemented as pure software (e.g., a software program written in Java), as pure hardware (e.g., a dedicated ASIC chip or FPGA chip), or as a system combining software and hardware (e.g., a firmware system storing fixed code or a system with a general-purpose memory and a processor), as desired.
Another aspect of the invention is a computer-readable medium having computer-readable instructions stored thereon that, when executed, perform a method of embodiments of the invention.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The scope of the claimed subject matter is limited only by the attached claims.
Claims (37)
1. An apparatus for recommending map elements, comprising:
an acquisition device for acquiring a node time and/or a node location of a first node of a first map element;
retrieving means for retrieving a second node of a map element having the same time as or similar to the node of the first node and/or a third node of a map element having the same location as or similar to the node of the first node, according to a predetermined rule; and
a returning means for returning the retrieved second node and/or the third node.
2. The apparatus of claim 1, wherein the first node has a node name, a node description, a node time, and a node location, and is associated with an identifier of the first map element.
3. The apparatus of claim 1, further comprising:
and the display device is used for displaying the second node and/or the third node on a display screen.
4. The device of claim 3, the display device capable of:
and simultaneously displaying the second node and the third node.
5. The device of claim 3, the display device capable of:
displaying the second node and/or the third node in a first manner on a first portion of the display screen and displaying the second node and/or the third node in a second manner on a second portion of the display screen.
6. The apparatus of claim 5, wherein the first manner is a list and the second manner is an icon displayed on a map.
7. The apparatus of claim 6, wherein the list displays at least one of a node name, a node description, a node location, a node time, and an element name of a map element to which each node belongs, of the first node, the second node, and/or the third node.
8. The apparatus of claim 6, wherein the node of the first map element is displayed iconically on the second portion, and the icon of the second node and/or the third node is displayed differently than the icon of the node of the first map element.
9. The apparatus of claim 3, further comprising means for displaying a timeline, wherein the timeline is capable of displaying all nodes of the first map element.
10. The apparatus according to claim 9, wherein when a node displayed on the time axis is selected, the retrieving means retrieves a node of a map element having a time same as or similar to the node of the selected node and/or a node of a map element having a place same as or similar to the node of the selected node, according to the predetermined rule, to be returned by the returning means and displayed by the display means.
11. The device of claim 3, wherein the display device is capable of:
displaying a first or most important node of the first map element at a central location on a map when the first map element is selected.
12. The device of claim 3, wherein the display device is capable of:
when a node of the first map element is selected, the node of the first map element is displayed at a central location on a map.
13. The apparatus of claim 4, wherein: the display of the second node and the display of the third node are switchable by a user.
14. The apparatus of claim 1, wherein: each of the second node and the third node may comprise one or more nodes.
15. The apparatus of claim 1, wherein the predetermined rule is: the node times are the same, the node times are similar, the node locations are the same and/or the node locations are similar.
16. An apparatus for displaying a map on a display screen, comprising:
means for providing a first map corresponding to a first time or a first time period for display on the display screen; and
means for providing a second map corresponding to a second time or a second time period for display on the display screen in superimposition with the first map.
17. The apparatus of claim 16, wherein the second map is displayed superimposed on the first map in a different color and semi-transparent manner.
18. The apparatus of claim 16, further comprising:
means for providing a third map corresponding to a third time or a third time period for display on the display screen in superimposition with the first map and the second map.
19. A method for recommending map elements, comprising:
acquiring node time and/or node location of a first node of a first map element;
according to a preset rule, retrieving a second node of a map element which is the same as or similar to the node time of the first node and/or a third node of the map element which is the same as or similar to the node place of the first node; and
returning the retrieved second node and/or the third node.
20. The method of claim 19, wherein the first node has a node name, a node description, a node time, and a node location, and is associated with an identifier of the first map element.
21. The method of claim 19, further comprising:
and displaying the second node and/or the third node on a display screen.
22. The method of claim 21, the displaying operation comprising:
and simultaneously displaying the second node and the third node.
23. The method of claim 21, the displaying operation comprising:
displaying the second node and/or the third node in a first manner on a first portion of the display screen and displaying the second node and/or the third node in a second manner on a second portion of the display screen.
24. The method of claim 23, wherein the first manner is a list and the second manner is an icon displayed on a map.
25. The method of claim 24, wherein the list displays at least one of a node name, a node description, a node location, a node time, and an element name of a map element to which each node belongs, of the first node, the second node, and/or the third node.
26. The method of claim 24, wherein the node of the first map element is displayed iconically on the second portion, and the icon of the second node and/or the third node is displayed differently than the icon of the node of the first map element.
27. The method of claim 21, further comprising displaying a timeline on the display screen, wherein the timeline is capable of displaying all nodes of the first map element.
28. The method according to claim 27, wherein when a node displayed on the time axis is selected, a node of a map element having a time identical to or close to a node of the selected node and/or a node of a map element having a place identical to or close to a node of the selected node is retrieved according to the predetermined rule, the retrieved node is returned and displayed on the display screen.
29. The method of claim 21, wherein the displaying operation comprises:
displaying a first or most important node of the first map element at a central location on a map when the first map element is selected.
30. The method of claim 21, wherein the displaying operation comprises:
when a node of the first map element is selected, the node of the first map element is displayed at a central location on a map.
31. The method of claim 22, wherein: the display of the second node and the display of the third node can be switched.
32. The method of claim 19, wherein: each of the second node and the third node may comprise one or more nodes.
33. The method of claim 19, wherein the predetermined rule is: the node time is the same, the node time is similar, the node location is the same and/or the node location is similar.
34. A method for displaying a map on a display screen, comprising:
providing a first map corresponding to a first time or a first time period for display on the display screen; and
providing a second map corresponding to a second time or a second time period for display on the display screen superimposed with the first map.
35. The method of claim 34, wherein the second map is displayed superimposed on the first map in a different color and semi-transparent manner.
36. The method of claim 34, further comprising:
providing a third map corresponding to a third time or a third time period for display on the display screen in superimposition with the first map and the second map.
37. A computer readable medium having computer readable instructions stored thereon which, when executed by a computer, are capable of performing the method of any one of claims 18-36.
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