Searching a document using relevance feedback
First Claim
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1. A document search apparatus comprising a processor coupled to a memory, and further comprising:
- a search request input to input a search request including a keyword set;
a user interface to cause a display to display an initial search result to a user, the initial search result comprising a first retrieved document set retrieved from a plurality of documents stored in a document database using the keyword set of the search request;
an extension word extractor to extract an extension word set from a seed document set, the seed document set being selected by the user from the first retrieved document set of the initial search result;
a database manager to search through the plurality of documents stored in the document database for a second retrieved document set using the keyword set of the search request and the extension word set, whereina first retrieved document of the first retrieved document set is displayed as a symbol having a position on a coordinate system, the position being defined by a relevance value of the first retrieved document of the first retrieved document set, and at least one attribute value of the first retrieved document of the first retrieved document set being converted to a numerical value when the at least one attribute value of the first retrieved document of the first retrieved document set is not expressed in a form of the numerical value; and
whereinthe first retrieved document is classified into a group of a plurality of groups according to the relevance value, and a weighting factor is assigned to each group of the plurality of groups.
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Abstract
When a search request is input, an initial search result that matches the search request is displayed to a user. When a seed document set is selected by the user from the initial search result, an extension word set is extracted from the seed document set. Using the extension word set in addition to the search request, another search is performed.
20 Citations
15 Claims
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1. A document search apparatus comprising a processor coupled to a memory, and further comprising:
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a search request input to input a search request including a keyword set; a user interface to cause a display to display an initial search result to a user, the initial search result comprising a first retrieved document set retrieved from a plurality of documents stored in a document database using the keyword set of the search request; an extension word extractor to extract an extension word set from a seed document set, the seed document set being selected by the user from the first retrieved document set of the initial search result; a database manager to search through the plurality of documents stored in the document database for a second retrieved document set using the keyword set of the search request and the extension word set, wherein a first retrieved document of the first retrieved document set is displayed as a symbol having a position on a coordinate system, the position being defined by a relevance value of the first retrieved document of the first retrieved document set, and at least one attribute value of the first retrieved document of the first retrieved document set being converted to a numerical value when the at least one attribute value of the first retrieved document of the first retrieved document set is not expressed in a form of the numerical value; and
whereinthe first retrieved document is classified into a group of a plurality of groups according to the relevance value, and a weighting factor is assigned to each group of the plurality of groups. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computer implemented method for searching a document using a system having a processor coupled to a memory, the method comprising:
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inputting a search request including a keyword set; searching through a plurality of documents stored in a document database for one or more first retrieved documents that match the keyword set of the search request to obtain an initial search result, the initial search result comprising a document identifier, a relevance value, and at least one attribute value for each one of the one or more first retrieved documents; displaying the initial search result to a user; selecting one or more seed documents as a seed document set from the one or more first retrieved documents according to a user instruction performed on the initial search result being displayed; extracting an extension word set from the seed document set; and searching through the plurality of documents stored in the document database for one or more second retrieved documents that match the keyword set of the search request and the extension word set, wherein the displaying the initial search result comprises; converting the at least one attribute value to a numerical value when the at least one attribute value is not expressed in a form of the numerical value; defining a position of at least one of the one or more first retrieved documents on a coordinate system, using the relevance value and the at least one attribute value or the numerical value of the at least one of the one or more first retrieved documents; placing a symbol at the defined position; and storing the defined position in a corresponding manner with the document identifier of the at least one of the one or more first retrieved documents, wherein the one or more first retrieved documents are classified into one or more groups according to the relevance values, and a weighting factor is assigned to each group of the one or more groups. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A document search system comprising a processor coupled to a memory, and further comprising:
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a search request input to input a search request including a keyword set; a user interface to cause a display to display an initial search result to a user, the initial search result comprising a first retrieved document set retrieved from a plurality of documents stored in a document database using the keyword set of the search request; an extension word extractor to extract an extension word set from a seed document set, the seed document set selected by the user from the first retrieved document set of the initial search result; a database manager to search through the plurality of documents stored in the document database for a second retrieved document set using the keyword set of the search request and the extension word set, wherein a first retrieved document of the first retrieved document set is displayed as a symbol having a position on a coordinate system, the position being defined by a relevance value of the first retrieved document of the first retrieved document set, and at least one attribute value of the first retrieved document of the first retrieved document set being converted to a numerical value when the at least one attribute value of the first retrieved document of the first retrieved document set is not expressed in a form of the numerical value; and
whereinthe first retrieved documents are classified into one or more groups according to the relevance values, and a weighting factor is assigned to each group of the one or more groups. - View Dependent Claims (15)
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Specification