Patent ID: 8117177
Filing Date: 2012-02-14
Classification: G06F

Abstract:
1. An information searching apparatus comprising: a processor; a memory storing computer-executable instructions for execution by the processor; a document accumulating unit that accumulates documents; a character-string accumulating unit that accumulates a first character string contained in a document and used as a search key, a second character string contained in the document that includes the first character string, and a second character string attribute obtained by abstracting the second character string, wherein the first character string co-occurs with the second character string in the document, and the second character string attribute represents a category corresponding to the second character string; a storage unit that preliminarily stores the second character string attribute, together with additional classifying information corresponding to the second character string, the additional classifying information including a first character string attribute obtained by abstracting the first character string, and representing a category corresponding to the first character string; an attribute accumulating unit that accumulates a pattern for determining a first character string and a first character string attribute, the first character string corresponding to the first character string attribute; an input receiving unit that receives an input of the first character string; an obtaining unit that obtains the first character string attribute that is in correspondence with the pattern accumulated in the attribute accumulating unit, the pattern matching the inputted first character string; an attribute extracting unit that extracts, from the storage unit, a second character string attribute corresponding to the obtained first character string attribute; a character-string extracting unit that extracts, from the character-string accumulating unit, the second character string that corresponds to the extracted second character string attribute; and a searching unit that searches the document accumulating unit for one or more documents that contains both the input first character string and the extracted second character string.