KR101263403B1 - Apparatus and method for keyword searching according to priority of inputted word and computer readable medium having stored thereon computer executable instruction for performing the method - Google Patents

Abstract

The present invention relates to a device for inputting a plurality of keywords separated by a predetermined delimiter through a search box, and to provide a search result for the plurality of input keywords. A keyword extraction unit for extracting the plurality of keywords by dividing; An attribute analysis unit for assigning an attribute value corresponding to each element of the ground rule for each of the plurality of keywords extracted from the keyword extraction unit; A priority determining unit that determines a priority among the plurality of keywords according to attribute values of the plurality of keywords provided by the attribute analyzer; And a search result generator that performs keyword search for each keyword and generates a result according to the priority determined by the priority determiner.

Search box, keyword, delimiter, attribute value, priority, ground rule

Description

Keyword-reading device, method, and computer-readable recording medium containing a program capable of implementing the keyword search according to the priority of the inputted words EXECUTABLE INSTRUCTION FOR PERFORMING THE METHOD}

1 is a view showing a keyword search result web page screen of a general portal site.

2 is a view showing a keyword search system according to a priority setting of an input word according to the present invention.

3 is a diagram illustrating a detailed configuration of a keyword retrieval apparatus according to priority setting of input words according to an embodiment of the present invention.

4 illustrates a data field of an index information database according to an embodiment of the present invention.

5 is a diagram showing a data field of a keyword attribute information database according to an embodiment of the present invention.

6 is a flowchart illustrating a keyword retrieval procedure according to priorities of input words according to an embodiment of the present invention.

7 is a diagram illustrating a method of determining priority when three or more keywords are input according to another embodiment of the present invention.

8 illustrates a search word input method using a delimiter according to another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

200: user terminal 210: Internet

220: web server 230: keyword analysis device

240: search engine 310: search transceiver

320: search result generator 330: user transceiver

340: priority determining unit 350: attribute analysis unit

360: keyword extraction unit 370: index information database

380: Keyword Property Information Database

The present invention relates to a keyword searching method. More particularly, the present invention relates to a keyword searching apparatus, method, and a program capable of implementing the same, according to a priority setting of input words for determining and processing search priorities of a plurality of input keywords. The present invention relates to a recording medium which can be read by.

In today's information society, computers and the Internet have emerged as essential tools for new communication, and as a result, computers and internet users are not only self-protecting from the various harms and dysfunctions of informatization that are contrary to the convenience of informatization. It is required to adapt quickly and continuously to change due to rapid change of environment. On the other hand, for efficient information retrieval through the Internet, it is possible to input a search word through portal sites (or search sites) equipped with a search engine.

1 is a diagram illustrating a keyword search screen in a general search site. Referring to FIG. 1, when a keyword (for example, deep impact) to be searched is input to a keyword search box 100 provided in a web page of a search site, the search engine is provided. Search through a large number of information linked on the Internet through, and provide information related to the search keyword as a search result (110). At this time, the plurality of search results are sorted and output according to a specific method set in the search site. For example, priority is provided based on the degree of relevance to the corresponding keyword to the searched documents or the registration date of the searched documents. In addition, information 120 about the searched document may be provided together.

Since the exposure position of the search result or the accuracy of the search result reflects the reliability of the search site, the design of the search engine and the search result output algorithm becomes a very important factor in the search site.

On the other hand, the search engines currently used in the Internet may be used in a plurality of different systems depending on the technology used. For example, a search engine may have various methods depending on a search technique or a provider, and each of the plurality of search engines may display different search results. In addition, recently, a method of integrating and providing search results from a plurality of different search sites in one search site is also provided. Accordingly, as shown in FIG. 1, a search is performed through various other search sites according to a corresponding search request, and then the results are summarized and provided.

In such a case, the plurality of results are collected by using a predetermined appropriate method. For example, they can be collected using a method of simply merging lists, or by identifying how common each item is in different systems and prioritizing them according to their frequency.

On the other hand, in general, a user who wants to search not only inputs one search word but also inputs two or more search terms because the user wants various and specific search results. In addition, some search sites receive sentences as search terms and provide search results.

As described above, when a user inputs a plurality of words, that is, search terms, a general search site performs a search using an intersection of the search terms irrespective of the relation of each search term or the intention of the user. In other words, in each search target (eg, web pages), the web documents including the plurality of search terms at the intersection are shown as a result.

When searching with a plurality of search terms as described above, if the search is performed without understanding the relationship between each search term or the user's intention to search, the wrong search result is output or the desired search result is not found. There is a problem that occurs frequently.

An object of the present invention is to provide a keyword search apparatus, method and method for setting the priority of input words to output an effective search result according to a user's intention by analyzing the relationship between each search word when a user inputs a plurality of search words. To provide a computer-readable recording medium containing the program.

In addition, an object of the present invention is to set a priority by dividing a plurality of search terms entered by the user into each element of the sixth principle, and to search according to the priority to output an effective search result that matches the intention of the user. Provided are a computer readable recording medium containing a keyword retrieval apparatus, a method according to priority setting, and a program for implementing the same.

The apparatus of the present invention for achieving the above object; In the apparatus for inputting a plurality of keywords separated by a predetermined separator through a search box, and providing a search result for the plurality of input keywords, the plurality of input keywords by separating the plurality of input keywords by the separator A keyword extraction unit for extracting a keyword; An attribute analysis unit for assigning an attribute value corresponding to each element of the ground rule for each of the plurality of keywords extracted from the keyword extraction unit; A priority determining unit that determines a priority among the plurality of keywords according to attribute values of the plurality of keywords provided by the attribute analyzer; And a search result generator that performs keyword search for each keyword and generates a result according to the priority determined by the priority determiner.

The apparatus may further include a keyword attribute information database in which various words which can be input as the keyword are stored, and attribute values of the respective words are mapped and stored. And an index information database in which priority information between keywords is mapped and stored.

On the other hand, the delimiter is characterized by consisting of any one or more selected from a space, a special character and a general character, if the plurality of keywords are three or more keywords, after comparing the priority by grouping two keywords, As a result of the comparison, the priority of the keyword having a high priority is recompared to finally determine the priority of all the keywords.

The attribute value assigned to each keyword may be any one selected from time, place, method, person, object, object, cause, reason, and reason.

The method of the present invention for achieving the above object; A plurality of keywords separated by predetermined separators are input through a search box, and in the method of providing a search result for the plurality of input keywords, a search word is input through a search box of a search site that provides a keyword search function. Becoming; Extracting a plurality of keywords from a search word input through the search box; Assigning an attribute value corresponding to each element of the ground rule for each of the extracted plurality of keywords; Determining a search priority according to the relationship between each keyword by referring to the attribute value of the given keyword; And performing a keyword search sequentially according to the priority.

Meanwhile, information on a keyword retrieval method according to the priority setting of the input words may be stored in a recording medium readable by a server computer. Such recording media includes all kinds of recording media on which programs and data are stored so that they can be read by a computer system. Examples include Read Only Memory (ROM), Random Access Memory (RAM), Compact Disk (CD), Digital Video Disk (DVD) -ROM, Magnetic Tape, Floppy Disk, Optical Data Storage, etc. It also includes implementations in the form of (eg, transmission over the Internet). In addition, these recording media can be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

In the keyword search method, when a plurality of keywords are inputted as a search word, the priority is determined by analyzing the relationship between the inputted keywords, and performing a sequential search according to the set priorities. It can provide a more effective search for.

That is, in the present invention, the attributes of each keyword in the plurality of input keywords are classified into respective elements of the ground rule, and priority is given to each of the input keywords according to the preset priority for the ground rule. Then, by performing keyword search sequentially according to the given priority, it is possible to obtain accurate search results intended by the user.

Meanwhile, when three or more search terms are inputted, all the inputted by the method of comparing the priorities after comparing the priorities by combining the two search terms according to another embodiment of the present invention. Effectively assigning priorities of search terms.

In addition, according to another embodiment of the present invention, a separate delimiter may be designated so that the search by the priority setting method according to the present invention can be set as a special function in the search window. For example, it is possible to indicate that the search method according to the present invention is to be applied by inputting special characters or the like between search words.

Hereinafter, a detailed description of a preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

2 is a diagram illustrating a keyword search system according to a priority setting of an input word according to the present invention. Referring to FIG. 2, the system according to the present invention may include a user terminal 200, the Internet 210, a web server 220, a keyword analyzing apparatus 230, a search engine 240, and the like. The user terminal 200 is a subject that performs a search and receives information, and the user performs a search by inputting a plurality of search words through the user terminal 200. The Internet 210 may be a wired or wireless network and may be extended to any network including a LAN, a WAN, and the like, but may be implemented as an Internet network.

A user accesses the web server 220 through the Internet 210 as the user terminal 200. The web server 220 may be understood as a portal site (or search site) that provides information according to the search of the user. In addition, as another implementation method, it may be a general website linked to the portal site or the like and providing information at the request of a user.

Meanwhile, according to the present invention, the information provided by the user's request is made through one or more search engines 240. In this case, the keyword analysis apparatus 230 according to the present invention analyzes a plurality of keywords input by the user through the user terminal 200 and gives priority to each keyword, and gives each keyword according to the given priority. The search for is performed through the search engine 240.

In addition, the results searched through the search engine 240 are arranged in the keyword analyzing apparatus 230 and provided to the corresponding user terminal 200 through the web server 220.

Accordingly, the keyword analyzing apparatus 230 according to the present invention analyzes a plurality of search terms transmitted from the user terminal 200, classifies the attributes of the search term into elements on the ground rule, and first, according to the attributes of the classified keywords. The ranking will be given. Then, the keyword analyzing apparatus 230 performs a search through the search engine 240 in the order of the high priority search terms according to the given priority.

Hereinafter, the keyword analysis apparatus 230 will be described in more detail with reference to FIG. 3.

3 is a diagram illustrating a detailed configuration of the keyword search apparatus 230 according to the priority setting of the input word according to an embodiment of the present invention. Referring to FIG. 3, the keyword search apparatus 230 includes a search transceiver 310, a search result generator 320, a user transceiver 330, a priority determiner 340, and an attribute analyzer 350. ), A keyword extractor 360, an index information database 370, a keyword attribute information database 380, and the like. The above configurations may be modified into other configurations having the same function according to the implementation method thereof.

As described above, each component of the keyword analyzing apparatus 230 analyzes the attribute of each keyword when a user requests a search by a plurality of search terms and determines the priority according to the present invention, thereby determining the keyword according to the priority. The search operation will be performed.

First, when a user requests a search, a process of analyzing a property of a keyword and assigning a priority to each keyword to provide a search result according to the present invention will be described.

Information requested by the user (ie, a plurality of keyword information) is transmitted to the user transceiver 330 through the web server 220. The user transceiver 330 transmits the search request information of the user received through the web server 220 to the keyword extractor 360 and the priority is reflected from the search result generator 320. Receives the searched result and serves to provide it back to the user through the web server 220.

First, a search word input by a user input to the user transceiver 330 is transmitted to the keyword extractor 360. The keyword extractor 360 extracts a plurality of keywords by dividing the search word input by the user by a separator or a space unit. For example, when the search word is “apgujeong delineation point”, the keyword extraction unit 360 extracts a keyword “apgujeong” and a keyword “deposition point” based on the spacing of the search word.

On the other hand, according to another embodiment of the present invention to be described later, when displaying the search function according to the present invention using a predetermined special delimiter, keywords are extracted based on the delimiter. For example, when the predetermined delimiter is a period (.), A plurality of keywords are distinguished based on the period. That is, when the search word is "apgujeongjeong.fragment point", the keyword "apgujeongjeong" and the keyword "breakfast point" are extracted based on the period. The use of the special delimiter as described above is a case where the search method according to the present invention is used as a separate search method instead of the basic search method in a general search site.

As such, when extraction of a plurality of keywords is completed by the keyword extractor 360, the plurality of keywords are transmitted to the attribute analyzer 350. The attribute analyzer 350 analyzes the attributes of each extracted keyword. At this time, the attribute of each keyword is determined by referring to the attribute value for each keyword stored in the keyword attribute information database 380.

The keyword attribute information database 380 stores various words such as general nouns, proper nouns, verbs, adjectives, adverbs, and rhetoric that can be input as keywords, and the attribute values of the words are mapped and stored. At this time, according to the present invention, each attribute value becomes one value of the 5W1H phase according to the ground rule. That is, it maps to one of the following values: time, where, who, who / what, how, cause, why and reason.

Words that may be classified as "when" may include words having characteristics such as time points, periods, times, anniversaries, holidays, etc., and words that may be classified as "where" may include names and names. It may be a word having a personality, such as a facility name, and a word that may be classified as who may be a word having a personality such as a human name, a trade name, a country name, a position name, a group name, etc. The word that may be classified as the thing / what may be a word having the characteristics of a brand, a service product, an event, an event, and the like, and the word may be classified by the method. Can be a word with the characteristics of knowledge, methods, skills, etc. In addition, the words that can be classified as the cause, why (reason) and grounds may be a word having a character that can correspond to the cause in a causal relationship such as retirement, illness, moving.

Therefore, the keyword attribute information database 380 stores a mapping value of where each input keyword corresponds to among the elements of the 5W1H. For example, when the keyword 'Gangnam Station' is input, since the keyword 'Gangnam Station' has a strong place property, the 'Gangnam Station' is mapped to an attribute value of 'Place'. In this case, it is preferable that the attribute value of 'place' is converted into a predetermined code value and stored. For example, the place may be converted into a code value such as '0x30' and stored.

On the other hand, since the search according to the present invention is a search for a plurality of keywords, an attribute value for each of the plurality of keywords is given. For example, if the keyword 'Gangnam station' and the keyword 'Starbucks' are extracted from the keyword extractor 360, the attribute analyzer 350 corresponds to the 'where' in the keyword 'Gangnam station'. Code values are mapped, and code values corresponding to 'things / what' are mapped to the keyword 'Starbucks'.

As such, when the attribute value is mapped to each of the plurality of keywords in the attribute analyzer 350, the attribute and the mapped attribute value are transmitted to the priority determiner 340. The priority determiner 340 determines the priority among the keywords according to the mapped attribute values of the keywords. The determination of the priority is determined by a table storing correlations between respective attribute values stored in the index information database 370.

The correlation table may be set as shown in Table 1 below.

Referring to <Table 1>, when a word having an attribute of a place called 'Cheonggyecheon' and a word having an attribute of 'Gaecheonjeol' are entered as a plurality of search terms, a higher priority is given to 'Cheonggyecheon'. do. In Table 1, an item on the vertical axis (that is, a search word located on the left side of two search terms) has a higher priority than an item on the horizontal axis (that is, a search word located on the right side of two search terms). For example, even if the keywords of the same place and time meet, 'Christmas' and 'Citizen's Hall' have higher priority than 'Citizen's Hall', which is a place. In the case of 'Cheonggyecheon', which represents a place, 'Cheonggyecheon', which represents a time, has a higher priority. Meanwhile, in Table 1, the table is composed of only 4W1H except the reason in 5W1H, but the method for the reason may also be configured in the same manner.

On the other hand, the priority relationship as described above may be managed by mapping to a predetermined code table. This reduces the amount of data to be processed and facilitates data management. The code table may be configured as shown in Table 2 below.

Place time Way Person Object / Object Place 0x00 0x01 0x02 0x03 0x04 time 0x10 0x00 0x12 0x13 0x14 Way 0x20 0x21 0x00 0x23 0x24 Person 0x30 0x31 0x32 0x00 0x34 Object / Object 0x40 0x41 0x42 0x43 0x00

As such, when the priority of the plurality of keywords is determined by the priority determiner 340, the search is performed sequentially according to the priority through the search transceiver 310. That is, a search is first performed on a keyword having a higher priority among two keywords, and a second search is performed on the keyword having a lower priority in the search result.

That is, the priority information and keyword information determined by the priority determiner 340 are transmitted to the search transceiver 310 and the search result generator 320, and the search transceiver 310 determines the priority. The search is sequentially performed through the one or more search engines 240 according to the priority of each keyword provided from the unit 340.

The search result performed by the search transceiver 310 is provided to the search result generator 320. The search result generator 320 receives priority information and keyword information for each keyword from the priority determiner 340, receives a search result for each keyword provided from the search transceiver 310, and performs a final search. Will produce a result. For example, a search result for a keyword having a high priority searched from the search transceiver 310 is provided to the search result generator 320, and the search result generator 320 determines the priority determiner 340. With reference to the priority value for each keyword provided from the keyword, the re-search for the low priority keyword is performed from the search result for the high priority keyword.

By doing so, the search result generator 320 generates search results according to priorities according to the present invention and transmits the search results to the corresponding user terminals 200 through the user transceiver 330 and the web server 220. .

The detailed structure of the system and apparatus according to the present invention has been described above with reference to FIGS. 2 and 3. Hereinafter, the data fields in each database according to the present invention will be described with reference to FIGS. 4 and 5.

4 is a diagram illustrating a data field of the index information database 370 according to an embodiment of the present invention. Referring to FIG. 4, the index information database 370 may include data fields such as keyword attribute information 410, index value information 420, and priority information 430. The keyword attribute information 410 and the index value information 420 are mapped with the priority information 430 and stored.

Accordingly, as described above, when the priority determining unit 340 provides the index information database 370 with information mapped to the attribute values for each keyword, the index information database 370 receives the received keyword attribute values ( 410 and the priority 430 mapped to the index value 420 are provided to the priority determiner 340 as a result value.

5 is a diagram illustrating a data field of the keyword attribute information database 380 according to an embodiment of the present invention. Referring to FIG. 5, the keyword attribute information database 380 may include data fields such as registered keyword information 510, keyword attribute information 520, and index value information 530. The registered keyword information 510 is mapped and stored with the keyword attribute information 520 and the index value information 530.

Accordingly, as described above, when the attribute analyzer 350 provides each keyword information to the keyword attribute information database 380, the keyword attribute information database 380 registers the received keyword information as registered keyword information 510. In the case where the corresponding keyword is a registered keyword, keyword attribute information 520 and an index value 530 mapped to the keyword are provided to the attribute analyzer 350.

6 is a flowchart illustrating a keyword search procedure according to priorities of input words according to an embodiment of the present invention. Referring to FIG. 6, when a user inputs a search word through a search box such as a search site (or a portal site) that provides a keyword search function and executes a search (S601), the device according to the present invention first searches for the search. The keyword is extracted from the search word input through the window, and it is determined whether a plurality of keywords have been input (S602).

If the input search word is one keyword instead of a plurality of keywords, a search for the corresponding keyword is performed according to a general search method (S606). On the other hand, when the input search word is composed of a plurality of keywords, the attributes of each keyword are analyzed as described above (S603).

Then, the search priority according to the relationship between each keyword is determined by referring to the attribute of the keyword (S604). When the priorities of the plurality of keywords are determined as described above, keyword search is sequentially performed according to the priorities (S605).

On the other hand, as a result of performing a sequential keyword search according to the priorities as described above, if a result including all of the plurality of keywords is not searched, the search results for the keyword with the highest priority among the plurality of keywords are given priority. It is preferable to provide.

For example, suppose that you want to see a ballet performance called Nutcracker on November 20, and you search for 'November 20' and 'Nutcracker' as a plurality of keywords. That is, if there is no doll ballet until the walnut performing on November 20, irrelevant information about November 20, which is not important to the user, was searched and provided.

However, when using the search method according to the priority setting according to the present invention, the nutcracker is set to a keyword with a high priority, and information about the nutcracker to perform on a date other than November 20 You can get it first. By doing so, it is possible to provide a search result that effectively reflects the user's intention (that is, the intention to value information about the performance rather than the date).

On the other hand, the above description is based on the example of the case where two keywords are entered as a search word. However, even when three or more keywords are input, the present invention can be easily extended. Hereinafter, a method of determining priority when three keywords are input will be described with reference to FIG. 7.

7 is a diagram illustrating a method of determining priority when three or more keywords are input according to another embodiment of the present invention. Referring to FIG. 7, when the first keyword 710, the second keyword 720, and the third keyword 730 are input to the search word input window 700, the two keywords are prioritized in accordance with the present invention. Will be judged.

First, the priority between the first keyword 710 and the second keyword 720 and the priority between the second keyword 720 and the third keyword 730 are determined. As a result of the determination, when the first keyword 710 has a higher priority than the second keyword 720 and the third keyword 730 has a higher priority than the second keyword 720, the first higher priority The priority of the keyword 710 and the third keyword 730 is re-determined.

As a result of the re-determination, when the priority of the third keyword 730 is higher than the priority of the first keyword 710, the third keyword 730, the first keyword 710, and the second keyword 720 are finally. ) Will be searched in order.

On the other hand, even if four or more keywords are input, like in the above three cases, two keywords are compared and then the high priority keyword is re-determined to finally determine the priority of all the keywords.

8 is a diagram illustrating a search word input method using a delimiter according to another embodiment of the present invention. Referring to FIG. 8, a search method according to the present invention can be applied by using a predetermined separate delimiter. That is, when a search method according to the present invention is to be used as a default in a general search site, such a separator does not need to be set separately.

However, if a general search is used as a base, a search may be performed using a basic search method when spaces are used between each keyword, and a search method according to the present invention may be implemented when a separate delimiter preset between each keyword is used.

For example, if it is assumed that the predetermined separate delimiter is a period (.), The user may input the search box 800 in a format such as 'first keyword. Second keyword. Third keyword'. In this case, the search system according to the present invention confirms that the search request is the search request according to the present invention through the period, which is the delimiter, and searches for the attribute check and priority determination for each keyword separated by the delimiter.

On the other hand, in the embodiment of the present invention has been described with respect to specific embodiments, of course, various modifications are possible without departing from the scope of the invention. Therefore, the scope of the present invention should not be limited by the illustrated embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

According to the present invention, in a search in which a plurality of keywords are input, it is possible to provide a search result that is close to information desired by a user by grasping a user's intention and searching for a more important keyword. In addition, it is possible to provide more accurate and highly reliable information by providing a result of sequentially searching by giving priority to each of the plurality of keywords input as a search word.

Claims (11)

In the apparatus for inputting a plurality of keywords separated by a predetermined separator through a search box, and providing a search result for the plurality of input keywords, A keyword extraction unit for extracting the plurality of keywords by dividing the input plurality of keywords by the delimiter; An attribute analysis unit for assigning an attribute value corresponding to each element of the ground rule for each of the plurality of keywords extracted from the keyword extraction unit; A priority determining unit that determines a priority among the plurality of keywords according to attribute values of the plurality of keywords provided by the attribute analyzer; And And a search result generator that performs keyword search for each keyword and generates a result according to the priority determined by the priority determiner. If the plurality of keywords are three or more keywords, After comparing the priorities by grouping two keywords, and comparing the priorities with respect to the high priority keywords given according to the attribute values among the two keywords grouped as a result of the comparison, the priorities for the final keywords are finally compared. Keyword search apparatus according to the priority setting of the input word, characterized in that for determining. The device of claim 1, wherein the device is And a keyword attribute information database in which various words which can be input as the keyword are stored, and attribute values of the respective words are mapped and stored. The device of claim 1, wherein the device is And an index information database in which priority information between a plurality of keywords is mapped and stored according to the attribute value of each keyword. The method of claim 1, wherein the delimiter, Keyword search apparatus according to the priority setting of the input word, characterized in that consisting of one or more selected from spaces, special characters and general characters. delete The method of claim 1, wherein the attribute value assigned to each keyword is Keyword search apparatus according to the priority setting of the input word, characterized in that any one selected from time, place, method, person, thing and object. In the method of inputting a plurality of keywords separated by a predetermined separator through a search box, and providing a search result for the plurality of input keywords, Inputting a search word through a search box of a search site that provides a keyword search function; Extracting a plurality of keywords from a search word input through the search box; Assigning an attribute value corresponding to each element of the ground rule for each of the extracted plurality of keywords; Determining a search priority according to the relationship between each keyword by referring to the attribute value of the given keyword; And Performing a keyword search sequentially according to the priority; If the plurality of keywords are three or more keywords, After comparing the priorities by grouping two keywords, and comparing the priorities with respect to the high priority keywords given according to the attribute values among the two keywords grouped as a result of the comparison, the priorities for the final keywords are finally compared. Keyword search method according to the priority setting of the input word, characterized in that for determining. The method of claim 7, wherein the delimiter, The keyword search method according to the priority setting of the input word, characterized in that composed of one or more selected from spaces, special characters and general characters. delete The method of claim 7, wherein the attribute value to be given for each keyword, Keyword search method according to the priority setting of the entered word, characterized in that any one selected from time, place, method, person, thing and object. A computer-readable recording medium containing a program capable of performing the method according to any one of claims 7 to 8 and 10.

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