Index generating program and search program

Abstract

[Problem] To minimize filter noise for a target filter for a string search with respect to document data in one aspect. [Solution] According to one embodiment, depending on whether or not a document element having at least a predetermined number of subelements exists in a document file, a computer: switches between a control process involving determining whether to include data in the document file in any of a plurality of blocks for each document element in a hierarchy of the subelements, or for each document element or each document element in a hierarchy of elements that are higher than the document elements; and, according to said control process, which corresponds to the switching, divides the document file into the plurality of blocks, and for each data item thereby obtained, generates index information indicating whether or not each data item includes prescribed character information.

Description

technical field [0001] The invention relates to retrieval technology of document data. Background technique [0002] Various types of books such as novels, academic books, and dictionaries are sold in the form of electronic books in which information is stored electronically. When performing a search for a plurality of document data, there is a technique of using index information indicating, for each type of character information, which correspondence relationship character information is included in a plurality of document data. For example, on the one hand, using pre-generated index information, the document data that includes a certain character information C in the search character string is used as the search object of the character string search based on the search character string, and on the other hand, the search object from the character string Controls for deleting other document data. This is because the index information shows that the above-mentioned charact...

AI Technical Summary

Problems solved by technology

On the other hand, even if sub-elements of the same higher-level element (for example, chapter, etc.) are included in the same block as in a dictionary, it may be difficult to suppress locking noise.

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