JPH0245873A - document search device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a document retrieval device for retrieving documents consisting of text, images, and the like.

Conventional technology FIG. 2 shows a configuration diagram of a conventional document search device.

This device updates the contents of a search key storage section 1, a document storage section 2, a document search section 3, a document output section 4, a related key storage section 6, and a search key storage section 1 based on the contents of the related key storage section 6. a search key update unit 7 that then starts the document search unit 3;
It is equipped with a search instruction section 5 that starts a search key update section 7, and when a search is instructed by specifying a search key, the contents of the search key storage section 1 are updated based on the contents of the related key storage section 8, and then,
A document having the updated key is searched among the documents in the document storage unit 2.

Hereinafter, the above search method will be referred to as an extended search method.

Problem to be Solved by the Invention In conventional document retrieval devices, when searching for documents using an extended search method, there is no correspondence between a group of related keys used to update search keys and a group of document storages. Ta. Therefore, the search key update process and the document search process were not necessarily compatible. For example, if the related key group is Japanese and its corresponding English,
Although the search range should be limited to English literature databases and databases with search keys written in English as document storage groups, this has not been possible with conventional document search devices.

In view of the above problems that conventional document search devices had, the present invention performs efficient searches by searching for documents only from document storage groups that correspond to related key groups used in extended searches. The purpose is to provide a document search device.

Means for Solving the Problems In order to achieve the above object, the present invention provides a search condition input section for inputting search conditions that are conditions for specifying a document to be searched and includes at least a search key; A related key storage section that stores a plurality of related key groups, a document and a key associated with the document, and manages a large number of associated keys stored in association with each other as one related key group. A document storage unit that stores a plurality of document storage groups, which manages a large number of associated documents as one document storage group; a search target specification unit that specifies the range of search target documents; Based on the contents specified in the specification section, ``A related key group specification section that specifies the related key group to be used, and a key related to the search key among the related key group specified by this related key group specification section. a related key extraction unit that extracts a related key, a search key update unit that updates an input search key using the related key output from the related key extraction unit and generates an actual search condition, and a search target specification unit that specifies a search target. a document storage group designation unit that specifies a document storage group to be searched based on the content of the search key update unit; and a document search unit that searches for documents from the specified document storage group according to the actual search conditions obtained by the search key update unit. This constitutes a document search device including a document output unit that outputs a search document.

According to the above-described configuration, the present invention selects a group of related keys corresponding to a specified search target range from the related key storage unit,
After extracting the key related to the input search key from the selected related key group and using it to update the search key and generate actual search conditions, document storage corresponding to the specified search target range is performed. Search for documents that satisfy the actual search conditions from within the group.

Embodiment FIG. 1 shows a block diagram of a document search device in an embodiment of the present invention.

In FIG. 1, reference numeral 11 denotes a search condition input section for inputting information that will be a clue for specifying a document to be searched from a document storage section, which will be described later. Here, the search condition is a plurality of keywords and a logical relationship structure between the keywords such as a logical sum and a logical product. Reference numeral 12 denotes a search key storage unit that stores a plurality of search keywords input in the search condition input unit 11. 13 is a logical relationship structure storage unit that stores the logical relationship structure input in the search condition input unit 11. Reference numeral 20 denotes a document storage unit that stores a large number of keywords and documents in association with each other. The document storage unit is composed of a plurality of mutually independent document storage groups. Here, it is assumed that each document storage group is a commercial database of each overseas country. Reference numeral 16 denotes a related key storage unit, which stores a plurality of related keywords associated with each keyword as one related key group, and stores a large number of related key groups. Here, it is assumed that each related key group stores a large number of native languages and corresponding foreign languages. Reference numeral 23 denotes a search target designation section for specifying the range of search target documents. In this embodiment, the field of the search target document is specified. Reference numeral 14 denotes a related key group designation unit that specifies information for specifying a related key group to be used when updating a search key, which will be described later, based on the content specified in the search target designation unit 23. At this time, the related key group designation unit 14 refers to a comparison table of fields and related key groups related to the fields, which is stored in advance.

Reference numeral 15 denotes a related key extraction unit which extracts the related keys of the search key included in the related key group output from the related key group specifying unit 14 and stored in the search key storage unit 12 into the related key storage unit 16. Take it out.

Reference numeral 17 denotes a search key update unit which contains the contents of the search key storage unit 12 (some search keys, the logical relationships between them which are the contents of the logical relationship structure storage unit 13, and the search which is the output of the related key extraction unit 15). Search conditions are updated using keys related to the keys. 18 is an actual search condition storage unit; search key update unit 1
The actual search conditions that are the output of step 7 are stored. Reference numeral 22 denotes a document storage group designation unit that specifies information for specifying a document storage group to be searched by the document search unit 19, which will be described later, based on the content specified by the search target designation unit 23. At this time, the document storage group designation unit 22 refers to a comparison table of fields and document storage groups related to the fields, which is stored internally in advance. Reference numeral 19 denotes a document retrieval unit which retrieves a document having a keyword corresponding to the search condition stored in the actual search condition storage unit 18 from a document storage group specified by the document storage group designation unit 22 in the document storage unit 20. Search from among the documents, and if a corresponding document exists, output information specifying that document. As the document designation information, information for identifying the document storage group and the start address of the area within the document storage group in which the document is stored are used. Here, the document search unit 19 outputs a plurality of document designation information when searching for a plurality of documents based on the given actual search conditions. Further, if there is no corresponding document, the document search unit 19 outputs information to that effect. Reference numeral 21 denotes a search document output unit that displays a document specified by the document specification information output from the document search unit 19. For example, a nice play device, a video device, a printer device, etc. are used. In addition, when the document search unit 19 outputs information indicating that “the corresponding document is available”, the document corresponding to the search condition is stored in the document storage unit 19.
A message indicating that the search could not be performed in 0 is displayed.

The operation of the document search device of the present invention configured as described above will be described below.

Search operation (1) The operator inputs search conditions from the search condition input section 11. The search condition consists of a plurality of search keys and logical relationships between the search keys such as logical sum and logical product.

(2) The input search key logical relationships are stored in the search key storage section 12 and the logical relationship structure storage section 13 in the form of codes, respectively.

(3) Furthermore, the operator inputs information specifying the range of search target documents from the search target designation unit 23. Here, enter the field of the document to be searched.

(4) The related key group specifying unit 14 specifies a related key group to be used according to the content specified by the search target specifying unit 23 and outputs it to the related key extracting unit 15. Here, the name of the foreign language used in the field of the search target document is output.

(5) The related key extraction unit 15 extracts the related keys included in the related key group specified by the related key group designation unit 14 from the related key storage unit 16. Furthermore, search key storage unit 1 searches among the related keys included in the retrieved related key group.
A key related to the search key stored in 2 is searched. Thereafter, some or all of the searched related keys are associated with the search key and output. In this case, the related key group holding the Japanese and foreign language translations output from the related key group specifying unit 14 is extracted. Thereafter, the foreign language corresponding to the search key is extracted from the group of related keys. Then, a foreign language search key is output.

(6) The search key update unit 17 updates the search key using the search key/related key pair output from the related key extraction unit 15 and the contents of the logical relationship structure storage unit 13. As a key update method, a search key and its related keys are combined using a logical OR for all search keys in the search conditions. Also, at that time,
A search key update unit 17 controls the key update procedure so that unnecessary key updates and duplicate key updates do not occur. Thereafter, the actual search conditions obtained as a result of the search key update are stored in the actual search condition storage section 18.

(7) The document storage group designation unit 22 specifies the document storage group to be used according to the content specified by the search target designation unit 23, and outputs it to the document search unit 19.

Here, the name of the overseas commercial database in which the search target document is stored is output.

(8) The document search unit 19 regards the actual search conditions stored in the actual search condition storage unit 18 as the search conditions for document search, and selects documents that satisfy the actual search conditions stored in the actual search condition storage unit 18 as the documents specified by the output of the document storage group designation unit 22. Search among memory groups. Here, according to the name of the overseas commercial database output from the document storage group specifying section 22, a document in the corresponding overseas commercial database is searched. If a corresponding document exists in the specified document storage group, it is used as information to specify that document.

Information identifying the document storage group and the start address ADR of the area within the document storage group where the document is stored are output.

Here, for the actual search condition, multiple pieces of the above document specification information A
DH may be output. Further, if there is no corresponding document, the document search unit 19 outputs information NO to that effect.

(9) The search document output unit 21 performs the following processing according to the content of the information sent from the document search unit 19.

- When the content of the information is ADH: The document specified by this is retrieved from a predetermined document storage group and stored temporarily, or it is displayed after being converted into another state such as visual information.

- If the information content is NO: Displays that the document matching the search condition could not be searched in the document storage group.

(End of search operation) As described above, in this embodiment, when a search target is specified, both the related key group to be used during the search and the document storage group to be searched are specified, and the input search key is used to specify the specific related key group. Since it is possible to update and search only a specific document storage group by using
By inputting the field of the search document, it is possible to determine which foreign database is appropriate to search, and furthermore, to create search conditions for the foreign database using search keys in the native language. Therefore, selection, search processing, and operation of necessary overseas databases can be greatly facilitated and made more efficient.

In this embodiment, the document search unit outputs multiple pieces of document designation information when multiple documents are retrieved based on the actual search conditions. It is also possible to output only the following. In this embodiment, the document specification information for the retrieved document is the start address of the area in the document storage group where the document is stored, but other information that uniquely identifies the document, such as a document identifier, may also be used. may also be used. In this embodiment, the search condition is a plurality of keywords and a logical relationship structure between the keywords such as a logical sum or a logical product, but it may also include other information. In this embodiment, the related key group is indicated by its name, but other coded information may be used. In this embodiment, the key update method is to combine the search key and its related keys with logical sum for all search keys in the search conditions, but it is also possible to combine with logical product, replace with related keys, etc. Other update methods may also be used. Note that in this embodiment, the range of search target documents is indicated by the field, but information such as purpose and source may also be used. Note that in this embodiment, an internal comparison table is used when creating information indicating a related key group and document storage group from information indicating the range of search target documents. This may be done by the specifying unit exchanging information. In this embodiment, each related key group is configured by Japanese language, but it may be divided and managed by individual, usage, field, etc. In this embodiment, each document storage group corresponds to an overseas commercial database, but it may also be an external database for individuals, uses, fields, etc. Furthermore, it goes without saying that they may be an internal database within the device.

Effects of the Invention In the document search device of the present invention, when a search target is specified, both the related key group to be used during the search and the document storage group to be searched are specified, and the input search key is searched using the specific related key group. Since it is possible to update and search only a specific document storage group, the efficiency of the search process can be greatly improved and the number of operations can be simplified. These have great practical effects.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a document search device according to an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional document search device. 11...Search condition input section, 14...Related key group specification section, 15. Related key extraction section, 16..Related key storage section, 1711.Φ search key update section, 19.. Document search section, 20...Fist document storage unit, 21---Search document output unit, 22...Document storage group specification unit, 23Φ...Search target specification unit.

Claims (1)

[Claims] A search condition input section for inputting search conditions that are conditions for specifying documents to be searched and includes at least a search key, and a large number of keys and related keys stored in association with each other as one related key group. A related key storage unit that stores a plurality of related key groups, and a related key storage unit that stores a large number of documents and associated keys associated with the documents as one document storage group, and stores multiple related key groups. A document storage unit that stores document storage groups, a search target specification unit that specifies the range of search target documents, and an association that specifies the related key group to be used based on the content specified in this search target specification unit. a key group specification section; a related key extraction section that extracts keys related to the search key from the related key group specified by the related key group specification section; a search key update unit that updates using the related key that is the output to generate actual search conditions; and a document memory group designation unit that specifies a document memory group to be searched based on the content specified in the search target designation unit. , a document search unit that searches for a document from a specified document storage group according to the actual search conditions obtained by the search key update unit, and a document output unit that outputs the searched document, A document search device characterized in that a search key is updated using a related key in a corresponding related key group according to a range, and a document having the updated search key is searched from the corresponding document storage group.