KR20180097120A - Method for searching electronic document and apparatus thereof - Google Patents

Abstract

The present invention discloses a method for searching electronic documents by using an electronic document search server, capable of providing a wide range of search results by searching for other knowledge entities associated with the query provided by the user. The method according to one embodiment of the present invention includes the following steps: searching for at least one first electronic document including an information field, in which a first keyword is written, from a first electronic document database (DB) among a plurality of electronic document DBs storing different types of electronic documents as the first keyword is obtained; extracting a plurality of second keywords by analyzing the context of the information field of the at least one first electronic document; searching for, from each of a plurality of electronic document DBs, different kinds of electronic documents including the information field, in which at least one of a plurality of second keywords is written; classifying the retrieved different types of electronic documents by using two or more second keywords and grouping the classified results according to the type of documents; and providing the grouped result to a user terminal.

Description

[0001] METHOD FOR SEARCHING ELECTRONIC DOCUMENT AND APPARATUS THEREOF [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic document retrieval method and a server thereof, and more particularly, to a method and a server for retrieving electronic documents such as patents, precedents, and articles.

A typical electronic document retrieval system provides a list of documents including the input keyword as a standard. That is, a general patent document retrieval system merely shows a keyword matching result by comparing a keyword inputted by a user with a keyword of stored electronic documents. These results indicate that the more various keywords are used, the more likely the user will include unintended search results.

Therefore, in recent years, in order to search for a document intended by a user without a material, a query entry for various field values (for example, title search, claim search, applicant, inventor, etc.) Allow. However, these various field values require the user to create a complex query statement and require an accurate query entry corresponding to the corresponding field value. That is, search results can not be obtained for missing field values. To overcome these limitations, some patent document retrieval systems receive a query composed of a plurality of keywords from a user and provide search results for keywords similar to the query. However, this may degrade the accuracy of the search results.

Therefore, not only retrieving only electronic documents containing keywords, but also based on the concept of the initial terms and semantic similarity that the user queries, and the information expressed in the ontology, Research on electronic document retrieval system that can find out is needed.

In this regard, Korean Patent Registration No. 10-1054824 (titled Patent Information Visualization System and Method) discloses searching for patent documents that contain keywords input from a user as they are, By clustering patent documents using keywords pre-set in documents, a method of allowing users to easily access the intended information is provided.

SUMMARY OF THE INVENTION The present invention addresses the above-described problems of the prior art, and some embodiments of the present invention extend a query input from a user to provide a retrieved result from an extended query. In this case, the retrieved results are grouped and provided semantically, so that the user can easily access the desired electronic document even if he or she simply queries. It should be understood, however, that the technical scope of the present invention is not limited to the above-described technical problems, and other technical problems may exist.

According to an aspect of the present invention, there is provided a method for searching an electronic document by an electronic document search server according to the first aspect of the present invention, Retrieving from the first electronic document DB of the plurality of electronic document databases one or more first electronic documents including an information field in which a first search term is written; Extracting a plurality of second search terms by analyzing the context of the information field of the at least one first electronic document; Retrieving, from each of the plurality of electronic documents DB, different types of electronic documents including an information field in which at least one of the plurality of second search words is described; Classifying the searched different types of electronic documents by using two or more second search words and grouping the sorted results by document type; And providing the grouped result to the user terminal.

According to a second aspect of the present invention, there is provided a method of searching an electronic document by an electronic document search server, comprising: extracting a plurality of second search terms by analyzing a context of the content as content created in a natural language is acquired; Retrieving, from each of the plurality of electronic documents DB, different types of electronic documents including an information field in which at least one of the plurality of second search words is described; Calculating similarity between the searched different types of electronic documents and the content; Grouping electronic documents classified by document type based on a predetermined similarity degree range; And providing the grouped result to the user terminal.

A method for searching an electronic document by an electronic document search server according to a third aspect of the present invention is a method for searching an electronic document from a first electronic document DB among a plurality of electronic document databases, Retrieving an electronic document; Analyzing the context of the information field of the at least one first electronic document to extract a plurality of second search terms; Retrieving electronic documents from each of a plurality of electronic document databases based on a second search word combination in which two or more of the plurality of second search words are combined; And grouping the retrieved electronic documents by document type, and providing the grouped result to the user terminal.

According to a fourth aspect of the present invention, there is provided an electronic document search server comprising: a plurality of electronic document databases (DBs) storing different kinds of electronic documents; A memory for storing a program for searching an electronic document; And a processor for executing the program. The processor retrieves from the first electronic document DB of the plurality of electronic documents DB one or more first electronic documents including the information field in which the first search word is written Extracting a plurality of second search terms from the plurality of electronic document DBs by analyzing the context of the information field of the at least one first electronic document, Classifies electronic documents of different types searched by using two or more second search words, groups classified results by document type, and provides the grouped results to a user terminal.

According to a fifth aspect of the present invention, there is provided an electronic document search server comprising: a plurality of electronic document DBs storing different kinds of electronic documents; A memory for storing a program for searching an electronic document; And a processor for executing the program. Wherein the processor analyzes the context of the content and extracts a plurality of second search words as the content created in the natural language is acquired as the program is executed and acquires at least one of a plurality of second search terms from each of the plurality of electronic document DBs The electronic documents of different types including one of the information fields in which one is described are searched to calculate similarities between the plurality of different kinds of electronic documents and the contents of the electronic documents, And provides the grouped result to the user terminal.

According to a sixth aspect of the present invention, there is provided an electronic document search server comprising: a plurality of electronic document DBs storing different kinds of electronic documents; A memory for storing a program for searching an electronic document; And a processor for executing the program. Wherein the processor is configured to retrieve, from the first electronic document DB among the plurality of electronic document databases, one or more first electronic documents including an information field in which a first search word is written, Extracting a plurality of second search words from the plurality of electronic document DBs based on a second search word combination in which two or more second search words of a plurality of second search words are combined, Searches for electronic documents of the sort, groups the retrieved electronic documents by document type, and provides the grouped result to the user terminal.

A seventh aspect of the present invention provides a computer-readable recording medium on which a program for implementing the method of the first aspect is recorded.

According to an embodiment of the present invention, an electronic document search server according to an embodiment of the present invention searches for another knowledge object associated with a query received from a user, thereby providing a wider search result. In addition, the electronic document search server according to an embodiment of the present invention can help users to utilize search results by grouping the retrieved results among documents having high semantic relevance.

1 is a schematic diagram of an electronic document retrieval system according to an embodiment of the present invention.
2 is a flowchart illustrating a method of searching an electronic document by an electronic document search server according to an embodiment of the present invention.
3 is an example of a user interface provided by the electronic document search server according to an embodiment of the present invention.
FIG. 4 illustrates a search result screen provided to a user terminal according to an embodiment of the present invention.
5 is an example in which a list of retrieved electronic documents is provided according to an embodiment of the present invention.
FIG. 6 illustrates a search result screen that is listed in order of high similarity according to an embodiment of the present invention.
FIG. 7A shows an example in which content is input into a first search word according to an embodiment of the present invention, and FIG. 7B shows an example of a search result screen according to the content input.
8 is a diagram illustrating a method for retrieving documents using a second set of search terms in accordance with another embodiment of the present invention.
9 is a block diagram illustrating a configuration of an electronic document search server according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as "including" an element, it is to be understood that the element may include other elements as well as other elements, And does not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

In this specification, the term " part " includes a unit realized by hardware, a unit realized by software, and a unit realized by using both. Further, one unit may be implemented using two or more hardware, or two or more units may be implemented by one hardware. On the other hand, 'to' is not limited to software or hardware, 'to' may be configured to be an addressable storage medium, and may be configured to play one or more processors. Thus, by way of example, 'parts' may refer to components such as software components, object-oriented software components, class components and task components, and processes, functions, , Subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables. The functions provided in the components and components may be further combined with a smaller number of components and components or further components and components. In addition, the components and components may be implemented to play back one or more CPUs in a device or a secure multimedia card.

The "user terminal" mentioned below may be implemented as a computer or a portable terminal capable of accessing a server or other terminal through a network. Here, the computer includes, for example, a notebook computer, a desktop computer, a laptop computer, and the like, each of which is equipped with a web browser (WEB Browser), and the portable terminal may be a wireless communication device , International Mobile Telecommunication (IMT) -2000, Code Division Multiple Access (CDMA) -2000, W-CDMA (W-CDMA), Wireless Broadband Internet (WIBRO), Long Term Evolution Phone, a personal digital assistant (PDA), a tablet PC, and the like.

The term "network" may also be used in a wired network such as a local area network (LAN), a wide area network (WAN) or a value added network (VAN) And may be implemented in all kinds of wireless networks, such as communication networks.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram of an electronic document retrieval system according to an embodiment of the present invention.

Referring to FIG. 1, an electronic document search system 10 according to an exemplary embodiment of the present invention includes an electronic document search server 100, an electronic document DB 200, and various types of user terminals 300.

The electronic document search server 100 communicates with the electronic document DB 200 and the user terminal 300 to search for electronic documents stored in the electronic document DB 200 based on the query input from the user terminal 300. The electronic document DB 200 may include a technical document DB for storing a technical document such as a paper, a patent document DB for storing a patent document, and a legal document DB for storing a precedent document such as a precedent. The electronic document search server 100 accesses the electronic document DB 200 and searches for an electronic document matched with the input query. In particular, the input query may be one or more keywords or document identification numbers (e.g., patent identification number, case identification number, article identification number, etc.), and the electronic document search server 100 may set the entered query as the first search term And generates a second search word from the one or more electronic documents retrieved. Here, the generated second search word is a plurality of keywords extracted as a result of analyzing one or more electronic documents retrieved by the first search word, and includes not only the keyword associated with the first search word but also a keyword indicating a knowledge object different from the first search word As shown in FIG. Accordingly, the electronic document search server 100 can allow a user of the user terminal 300 to access a desired document without inputting all necessary keywords.

1, the electronic document DB 200 is located outside the electronic document search server 100, but the present invention is not limited thereto. The electronic document DB 200 may be included in the electronic document search server 100 as shown in FIG. Also, the electronic document DB 200 may be implemented as a plurality of DBs and may be distributed and located.

The user terminal 300 provides the input query (i.e., the first search word) to the electronic document search server 100 through a user interface provided by the electronic document search server 100. [ Also, the user terminal 300 may display the search result provided by the electronic document search server 100 on the screen of the user terminal 300. [

2 is a flowchart illustrating a method of searching an electronic document by the electronic document search server 100 according to an embodiment of the present invention.

First, the electronic document search server 100 acquires the first search word (S200). For example, the user terminal 300 can access the electronic document search server 100 by executing a specific application (or program) or a web site. The electronic document search server 100 provides a user interface for receiving a user query through the application or a web site, and acquires a query input through the user interface as a first search word.

FIG. 3 illustrates an example of a user interface provided by the electronic document search server 100 according to an embodiment of the present invention. Referring to FIG. 3, the electronic document search server 100 provides a keyword-based search similar to a general web search. Therefore, as shown in FIG. 3, a simplified user interface for inputting a keyword or a document identification number is provided instead of a user interface for receiving a search formula required by a conventional patent document search. The document identification number may be, for example, a patent application number, a patent publication number, a patent registration number, a paper identification number, a case identification number, a case identification number, and the like.

Referring again to FIG. 2, as the first search word is acquired, the electronic document search server 100 searches for a first electronic document including an information field in which a first search word is written from a first electronic document DB among a plurality of electronic document DBs (S210). Hereinafter, for convenience of explanation, it is assumed that the first electronic document DB is a patent document DB, and the first electronic document is a patent document. In this case, the information field may be, but is not limited to, the Claims field of the patent document as a non-limiting example. That is, the electronic document search server 100 searches for patent documents including the corpus of the first search word among all the claims of the patent documents included in the patent document DB.

On the other hand, the first electronic document DB can be determined based on a special character (e.g.,!, @, #, Etc.) preset in the first search word. For example, when the predetermined character is not included in the first search word, the electronic document search server 100 searches the patent document DB for a patent document corresponding to the first search word, and when "@" is included in the first search word , The technical document corresponding to the first search word is searched from the technical document DB, and when the first search word includes "# ", the legal document corresponding to the first search word can be searched from the legal document DB.

Next, the electronic document search server 100 generates a plurality of second search terms by analyzing the context of the information fields of the first electronic documents searched (S220).

Illustratively, the electronic document search server 100 extracts the keywords of the entire claim described in the retrieved patent documents. The electronic document search server 100 may perform a type analysis of the claims of each patent document to extract keywords of a corpus unit. At this time, the electronic document search server 100 may search the corpus unit (s) described in the entire claims by using a complex network, a neural network, an ontology, a thesaurus, a word net, Can be extracted. Further, the electronic document search server 100 may obtain another word having the same meaning as the extracted keyword.

Then, the electronic document search server 100 extracts a second search term from among the extracted keywords, based on the frequency of use, importance, and the relationship between the keywords of each of the extracted keywords. In this case, the frequency of use of each keyword represents the number of times of use in the entire claim, and the importance of each keyword is determined by the number of patent documents in which the keyword is described, the number of citations of the patent document, , Dependency clause, dependency relation between claims, etc.). Also, the relationship between the keywords indicates whether or not the keywords are used in the same patent document, proximity, and the like.

The electronic document search server 100 ranks the extracted keywords on the basis of at least one of the frequency of use, the importance, and the relationship among the keywords, and selects each of the predetermined number of the top ranked keywords as the second search word. For example, the electronic document search server 100 may extract the main keyword based on the frequency of use given different weights for each year. In this case, the electronic document search server 100 may assign different weights to the years from the year in which each keyword was first used to the current year, and then rank the keywords by the result of multiplying the frequency of use in each year by the weight .

In addition, the electronic document search server 100 may rank the keywords in consideration of the patent life cycle, the IPC value, and the like of the patent documents in which each keyword is described. However, the present invention is not limited thereto, and keywords may be ranked in various ways.

Next, the electronic document search server 100 searches for each of the electronic document DB (i.e., the patent document DB, the technical document DB, the legal document DB, and the like) (I.e., a patent document, a technical document, and a precedent document) (S230). At this time, the information field may further include, in addition to claims of the patent document, a judgment statement field of a precedent document, an abstract field and / or a body field of the descriptive document, and the like.

Next, the electronic document search server 100 classifies different types of electronic documents (that is, patent documents, technical documents, and precedent documents) by using two or more second search words, classifies the classified results into groups (S240). The electronic document search server 100 searches for electronic documents (i.e., patent documents) retrieved from a first electronic document DB (e.g., a patent document DB) with a second search term, May be classified into one group having the indexes of the two or more second search words. At this time, a patent document in which two or more second search terms are simultaneously described can be obtained from the relationship value between the above-mentioned keywords.

Also, the electronic document search server 100 can determine the rank of each index based on the number of first electronic documents matched to each index.

Then, the electronic document search server 100 searches the electronic document DB (i.e., the technical document and the precedent document) retrieved from the remaining electronic document DB for an information field in which two or more second search terms corresponding to the classified groups are simultaneously described The electronic documents included are grouped by category and linked to corresponding indexes. That is, the electronic document search server 100 may include a case document including a judgment statement in which two or more second search words corresponding to each group are written, and a summary field and / or a body field in which the two or more second search words are described Group the technical documents, and classify the two or more second search words into respective groups having indices. That is, one index is associated (linked) to different types of electronic document groups, and each electronic document group follows the index's rank.

Then, the electronic document search server 100 provides the results grouped by document type to the user terminal 300 (S250).

FIG. 4 illustrates a search result screen provided to the user terminal 300 according to an embodiment of the present invention. Referring to the search result screen 400 of FIG. 4, the patent document group 421, the precedent document group 422, and the technical document group (paper document) 423 grouped by using two or more second search terms And is provided in association with an index 420 comprised of second search terms. The index 420 is listed according to the rank value set based on the number of patent documents in the patent document group 421.

At this time, the search result screen 400 may provide a second search word part 410. The second search term 410 may be provided in the form of a graphical user interface (GUI) that allows it to function as a first search term. That is, as the user of the user terminal 300 selects one second search word, the electronic document search server 100 may perform the above-described steps S220 through S250 based on the selected second search word.

In addition, when the user selects a group (e.g., a group of patent documents of "predictive algorithm independence"), the electronic document search server 100 provides a list of patent documents within the patent document group. 5 is an example in which a list of retrieved electronic documents is provided. At this time, the provided second search word part 510 represents the second search word extracted from the patent document text in the selected patent document group.

Meanwhile, the first search word may be a document identification number (e.g., a patent identification number, a paper identification number, and a case identification number). In this case, the electronic document search server 100 calculates the similarity between one electronic document corresponding to the document identification number and the electronic documents retrieved from the plurality of second search words extracted from the information field of the electronic document, It is possible to group and provide electronic documents classified by document type based on the set similarity degree. At this time, each electronic document group can have the similarity degree range as an index. That is, the electronic document server 100 classifies different types of electronic document groups (that is, a patent document group, a precedent document group, and a technical document group) having an index range of 100% to 70% To 0% similarity degree indexes, and provides a search result screen in which the electronic document groups are sorted in descending order of high similarity.

FIG. 6 illustrates a search result screen 600 that is listed in order of high similarity according to an embodiment of the present invention. Referring to FIG. 6, the electronic document search server 100 provides each electronic document group 610 having an index of similarity degree as an index, and provides a second search word portion 620 as a GUI. In addition, the electronic document search server 100 may provide the electronic documents listed in order of similarity (630).

Such similarity-based search results can be filtered by the filing date, publication date, sentence date, etc. of the electronic document so that it can be used to search for the preceding document of the electronic document corresponding to the first search word.

In addition, the similarity-based search result may be provided by selecting one electronic document by the user of the user terminal 300 on the list screen 500 of the electronic documents of Fig. That is, the electronic document search server 100 can perform the same operation as that in the case where the document identification number is input from the user by obtaining the document identification number of the selected electronic document.

In addition, the first search word may be content written in a natural language. That is, the user can search for an associated electronic document by using the content created in a natural language. FIG. 7A shows an example in which content 710 is input to a first search term according to an embodiment of the present invention. In this case, the electronic document search server 100 extracts the keyword of the corpus unit from the content 710, and based on the usage frequency, importance, and relationship among the keywords in the content 710 of each extracted keyword, Can be selected. Then, the electronic document search server 100 calculates the similarity between the input content 710 and the electronic documents retrieved from the second search word, and groups the electronic documents classified by the document type based on the predetermined similarity degree range. As in the above-described embodiment, each electronic document group can have the similarity degree range as an index. The grouped result is provided to the user terminal 300 as a search result. FIG. 7B is an example showing a search result screen according to the content input.

Meanwhile, in FIG. 2, grouping is performed from the retrieved result documents using each of the second search words in step S240, but the present invention is not limited thereto. In accordance with an implementation, the electronic document search server 100 can first search for documents (i.e., patent documents, case documents, and technical documents) using a second search term combination after first combining two or more second search terms have. 8 is a diagram illustrating a method of retrieving documents using a second set of query terms.

Step 1: The electronic document search server 100 extracts keywords from the first electronic documents retrieved from the first electronic document DB using the first search word. For example, when the first search word is "Big Data ", the keywords to be extracted are {Big Data, Image Data, Data, Server, Location, Module, Cloud, Intelligent Object, Camera, Image, Self- Etc.).

Step 2: Thereafter, the electronic document search server 100 extracts the second search word based on the frequency of use of each keyword, the importance of each keyword, and the relationship between the keywords. For example, the electronic document search server 100 ranks each keyword based on the total frequency of use of each keyword, and then, based on the frequency of use corresponding to the upper certain rate (for example, 30%), Can be extracted. This is the same as step S220 of FIG. 2, and therefore, detailed description thereof will be omitted. The electronic document search server 100 can acquire the main keyword list from which the "intelligent intelligent object ", " self-propelled "," intelligent ", etc. are deleted from the keyword list in STEP2.

Step 3: The electronic document search server 100 generates a second search word combination in which two or more second search words are combined. Illustratively, the electronic document search server 100 may input the second search words to a neural network and output a second search word combination. In this case, the neural network may be a keyword that is learned together with keywords used in one electronic document. For example, if the second search term is {Big Data, Image Data, Server, Location, Module, Image, Signal, Cloud, ...}, then the second query combination is {Big Data Server Location, Big Data Server Module , Big data server cloud, etc.).

Step 4: The electronic document search server 100 searches for a patent document, a precedent document, and a technical document including information describing all of the second search terms constituting the second search word combination. At this time, the second search words constituting the second search word combination do not have to be sequentially described, and it suffices that each second search word is described in one document.

The electronic document search server 100 may rank each second set of search terms based on the number of patent documents in which each second set of search terms is described and provide the ranked search results to the user terminal 300. [ can do.

In FIG. 8, three second search terms are combined, but the present invention is not limited thereto. The second search word may include a preset number of word combinations.

9 is a block diagram showing a configuration of an electronic document search server 100 according to an embodiment of the present invention. The configurations of the electronic document search server 100 shown in Fig. 9 relate to the embodiments described in Figs. 1 to 8 described above. Therefore, the contents described above in Figs. 1 to 6 can be applied to the configuration of the electronic document search server 100 of Fig. 9, even if omitted below.

Referring to FIG. 9, the electronic document search server 100 includes a processor 110, a memory 120, a communication unit 130, and a plurality of electronic document DB 140.

The processor 110 controls the overall operation of the electronic document search server 100. For example, the processor 110 may include at least one component for controlling the operation of the memory 120, the communication unit 130, and the plurality of electronic document DBs 140. For example, the processor 110 may include a random access memory (RAM) (not shown), a read only memory (ROM) (not shown), a CPU (not shown), a GPU (Graphic Processing Unit) (Not shown). At this time, the RAM, the ROM, the CPU and the GPU can be connected to each other via the bus.

The processor 110 may also execute programs stored in the memory 120 to retrieve electronic documents based on the first query received from the user terminal 300 and provide search results accordingly. At this time, the memory 120 is collectively referred to as a non-volatile storage device that keeps stored information even when power is not supplied, and a volatile storage device that requires power to maintain stored information.

Specifically, the processor 110 retrieves, from the first electronic document DB of the plurality of electronic document DBs 140, one or more first electronic documents including the information field in which the first search word is written, as the first search word is acquired do. At this time, the information field may include a claim field of a patent document, a summary field and / or a text field of a technical document, a judgment statement field of a precedent document, and the like. Next, the processor 110 analyzes the context of the information field of the first electronic document to extract a plurality of second search terms. Illustratively, the processor 110 extracts a plurality of keywords in a corpus-based unit from the information field of one or more first electronic documents, and based on the frequency of use of each keyword, the importance of each keyword, , It is possible to select a part of the plurality of keywords as the second search word.

On the other hand, the first electronic document DB can be determined based on a predetermined special character included in the first search word. For example, when the first search word does not include a predetermined special character, the processor 110 determines the first electronic document DB as the patent document DB, and if the first search word includes "@ & The document DB is determined as the technical document DB, and when the first search word includes "# ", the first electronic document DB can be determined as the legal document DB.

Next, the processor 110 retrieves different kinds of electronic documents including information fields in which at least one of the plurality of second search terms is written from each of the plurality of electronic document DBs 140. [ Then, the processor 110 classifies the retrieved electronic documents by using two or more second search words, and groups the classified results according to document types.

Illustratively, the processor 110 may associate first electronic documents containing information fields in which two or more second search terms are simultaneously described with respect to a plurality of first electronic documents retrieved from the first electronic document DB, The second search word is classified into a group having an index. Then, the processor 110 groups the electronic documents including the information field in which the two or more second search words are simultaneously described, for each type, and links the corresponding electronic documents to the corresponding indexes for the remaining electronic documents retrieved from the remaining electronic document DB. At this time, the processor 110 determines the rank of each index based on the number of first electronic documents matched to each index.

Next, the processor 110 provides the grouped result to the user terminal 300. At this time, the processor 110 may provide the grouping results listed in the order of the indexes to the user terminal 300. In addition, the processor 110 provides a plurality of second search words in the form of a graphic user interface (GUI). At this time, the part of the second search word may function as a first search word by being selected by a user input in the user terminal 300. [

Meanwhile, the first search word may be a document identification number (e.g., a patent identification number, a case identification number, a paper identification number, etc.). In this case, the processor 110 searches for a first electronic document corresponding to the document identification number from the first electronic document DB, and calculates a degree of similarity between the first electronic document and a plurality of electronic documents retrieved by the second search word . The processor 110 groups the electronic documents classified by the document type based on a predetermined similarity degree range. At this time, each electronic document group has the similarity degree range as an index.

On the other hand, the first search word may be content written in a natural language. In this case, the processor 110 analyzes the context of the content and generates a plurality of second search words. The processor 110 then retrieves, from each of the plurality of electronic document DBs 140, different types of electronic documents including information fields in which at least one of the plurality of second search terms is written. The processor 110 calculates the similarity between the content and the searched different types of electronic documents. Then, the processor 110 groups the electronic documents classified by the document type based on the predetermined similarity degree range, and provides the grouped results to the user terminal 300.

In another embodiment, the processor 110 retrieves the electronic documents using a second set of search terms combined with two or more second search terms among a plurality of second search terms after extracting the plurality of second search terms . In other words, the processor 110 may retrieve, from each of the plurality of electronic document DBs 140, electronic documents including an information field in which each second query word of each second query word combination is written. Then, the processor 110 groups the retrieved electronic documents according to the document type, and provides the grouped result to the user terminal 300. At this time, the second set of query terms can be generated by the pre-merged neural network.

The communication unit 130 may include one or more components that allow the electronic document search server 100 to communicate with the user terminal 300, another server, and the like. For example, the communication unit 130 may include at least one of a mobile communication chip (not shown), a wired communication chip (not shown), a Wi-Fi chip (not shown), and a wireless communication chip (not shown).

One embodiment of the present invention may also be embodied in the form of a recording medium including instructions executable by a computer, such as program modules, being executed by a computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. The computer-readable medium may also include computer storage media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data.

While the methods and systems of the present invention have been described in connection with specific embodiments, some or all of those elements or operations may be implemented using a computer system having a general purpose hardware architecture.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

10: Electronic Document Search System
100: electronic document search server
200: a plurality of electronic document DB (database)
300: user terminal

Claims (15)

A method for an electronic document search server to retrieve a patent document,
As the first search word is acquired, from the first electronic document DB among the plurality of electronic document DBs storing different kinds of electronic documents, one or more first electronic documents including the information field describing the first search word ;
Analyzing a context of the information field of the at least one first electronic document to extract a plurality of second search terms;
Retrieving, from each of the plurality of electronic document databases, the electronic document of the different kind including an information field in which at least one of the plurality of second search words is described;
Classifying the searched different types of electronic documents by using two or more second search words and grouping the sorted results by document type; And
And providing the grouped result to a user terminal. The method according to claim 1,
The information field
A claim field of a patent document, at least one of an abstract field and a text field of a technical document, and a judgment statement field of a precedent document. The method according to claim 1,
The step of grouping by document type
The first electronic document retrieved from the first electronic document DB includes at least one first electronic document in which two or more second search words are simultaneously described, ; And
Grouping the electronic documents including the information field in which the two or more second search words are concurrently described, for the remaining electronic documents retrieved from the remaining electronic document DB, and linking the electronic documents to the index Way. The method of claim 3,
Wherein the grouping by the document type comprises:
And determining a rank of each index based on the number of first electronic documents matched to each index. 5. The method of claim 4,
The step of providing the grouping result
Providing the grouped electronic documents listed according to the rank of each index, and providing a part of the plurality of second search words in the form of a graphical user interface (GUI)
Wherein the second search term part functions as a first search term as selected by user input at a user terminal. The method according to claim 1,
The first search word is a document identification number,
The step of grouping by document type
Calculating a degree of similarity between the first electronic document corresponding to the first search word and the electronic documents searched based on the plurality of second search words; And
Grouping electronic documents classified by document type based on a predetermined similarity degree range,
And each electronic document group has the predetermined similarity degree range as an index. The method according to claim 1,
Wherein the first electronic document DB is determined based on a predetermined special character included in the first search word. A method of an electronic document search server for searching an electronic document,
Extracting a plurality of second search terms by analyzing a context of the content as the content is obtained in a natural language;
Retrieving, from each of a plurality of electronic documents DB, different types of electronic documents including an information field in which at least one of the plurality of second search words is described;
Calculating similarity between the searched different types of electronic documents and the content;
Grouping electronic documents classified by document type based on a predetermined similarity degree range; And
And providing the grouped result to a user terminal. A method of an electronic document search server for searching an electronic document,
Retrieving from the first electronic document DB of the plurality of electronic documents DB one or more first electronic documents including an information field in which a first search word is written;
Analyzing a context of the information field of the at least one first electronic document to extract a plurality of second search terms;
Retrieving electronic documents from each of the plurality of electronic document databases based on a second set of search terms in which two or more of the plurality of second search terms are combined; And
Grouping the retrieved electronic documents by document type, and providing the grouped result to a user terminal. 10. The method of claim 9,
Wherein the second search word combination comprises:
Wherein the generated electronic document is generated by a learned neural network or a complex system network. 10. The method of claim 9,
The step of extracting the second search word
Extracting a plurality of keywords in a corpus unit from the at least one first electronic document; And
A step of selecting a part of the plurality of keywords as a second search term based on the frequency of use of each keyword in the at least one first electronic document, the importance degree of each keyword, and the relation between the plurality of keywords The electronic document retrieval method. An electronic document search server comprising:
A plurality of electronic document databases (DB) in which different kinds of electronic documents are stored;
A memory for storing a program for searching an electronic document; And
And a processor for executing the program,
The processor, as the program is executed,
Retrieving from the first electronic document DB of the plurality of electronic document databases one or more first electronic documents including the information field in which the first search word is written as the first search word is acquired, Extracts a plurality of second search terms by analyzing the context of the information field of the first search word,
The electronic document including at least one of the plurality of second search words from the plurality of electronic document DBs, and searching for the different types of electronic documents using the at least two second search words, And grouping the sorted results by document type,
And provides the grouped result to a user terminal. An electronic document search server comprising:
A plurality of electronic document databases (DB) in which different kinds of electronic documents are stored;
A memory for storing a program for searching an electronic document; And
And a processor for executing the program,
The processor, as the program is executed,
Extracting a plurality of second search words by analyzing the context of the content as the content created in a natural language is acquired and extracting a plurality of second search terms from each of the plurality of electronic document DBs, Retrieving the different types of electronic documents,
Calculating similarities between the plurality of different types of electronic documents and the content, grouping electronic documents classified by document type based on a predetermined similarity degree range,
And provides the grouped result to a user terminal. An electronic document search server comprising:
A plurality of electronic document databases (DB) in which different kinds of electronic documents are stored;
A memory for storing a program for searching an electronic document; And
And a processor for executing the program,
The processor, as the program is executed,
Retrieving from the first electronic document DB of the plurality of electronic document databases at least one first electronic document including an information field in which a first search word is written and determining a context of the information field of the at least one first electronic document Extracts a plurality of second search words,
Searches for different types of electronic documents from each of the plurality of electronic document DBs based on a second search word combination in which two or more second search words of the plurality of second search words are combined, And provides the grouped result to the user terminal. 12. A computer-readable recording medium on which a program for implementing the method of any one of claims 1 to 11 is recorded.

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