Encoding apparatus and encoding method

Abstract

An information processing device encodes a plurality of documents into a first plurality of encoded documents, respectively based on first encoding information in which a plurality of words and a plurality of first codes of a first code group are associated, words included in the plurality of documents and included in the first encoding in being encoded in the plurality of encoded documents. The information processing device performs frequency counts for each of a plurality of codes in the first encoded documents encoded in the first encoding. The information processing device encodes the plurality of first encoded documents into a plurality of second encoded documents respectively, utilizing a result of the frequency counts.

What is claimed is: 
     
         1 . A non-transitory computer-readable recording medium having stored therein an encoding program that causes a computer to execute a process comprising:
 first encoding a plurality of documents into a first plurality of encoded documents, respectively based on first encoding information in which a plurality of words and a plurality of first codes of a first code group are associated, words included in the plurality of documents and included in the first encoding information being encoded in the plurality of encoded documents;   performing frequency counts for each of a plurality of codes in the first encoded documents encoded in the first encoding; and   second encoding the plurality of first encoded documents into a plurality of second encoded documents respectively, utilizing a result of the frequency counts.   
     
     
         2 . The non-transitory computer-readable recording medium according to  claim 1 , wherein the second encoding includes:
 generating integrated total information in which results of frequency counts of the respective first encoded documents are merged, encoding the respective first encoded documents into a plurality of second encoded documents through the second encoding based on the generated integrated total information, and outputting the second encoded documents.   
     
     
         3 . The non-transitory computer-readable recording medium according to  claim 1 , wherein the first encoding information associates each word in the words with each first code of a fixed length in the first code group, and the process further comprises:
 performing the first encoding, based on the first encoding information, on each of the second encoded documents obtained by performing the second encoding.   
     
     
         4 . The non-transitory computer-readable recording medium according to  claim 3 , the process further comprising:
 when a first encoded document including a specific keyword is to be searched for from the first encoded documents,   determining the first encoded document including the specific keyword from the first encoded documents, based on the results of frequency counts of the respective first encoded documents; and   searching for a first encoded code string corresponding to the determined first encoded document.   
     
     
         5 . The non-transitory computer-readable recording medium according to  claim 3 , the process further comprising:
 when a first keyword in the first encoded documents is to be replaced with a second keyword,   determining the first encoded document including the first keyword based on the results of frequency counts of the respective first encoded documents; and   replacing a first code of the first keyword with a first code of the second keyword for the first encoded code string corresponding to the determined first encoded document.   
     
     
         6 . The non-transitory computer-readable recording medium according to  claim 4 , the process further comprising:
 integrating the first encoded code strings corresponding to the first encoded document searched by the process of searching, or the first encoded code strings corresponding to the first encoded document replaced by the process of replacing; and   updating the results of frequency counts in the first encoded documents including the first encoded document corresponding to the first encoded code string integrated by the process of integrating.   
     
     
         7 . An encoding apparatus comprising:
 a processor, wherein the processor executes:   first encoding a plurality of documents into a first plurality of encoded documents, respectively based on first encoding information in which a plurality of words and a plurality of first codes of a first code group are associated, words included in the plurality of documents and included in the first encoding information being encoded in the plurality of encoded documents;   performing frequency counts for each of a plurality of codes in the first encoded documents encoded in the first encoding; and   second encoding the plurality of first encoded documents into a plurality of second encoded documents respectively, utilizing a result of the frequency counts.   
     
     
         8 . An encoding method executed by a computer, the method comprising:
 first encoding a plurality of documents into a first plurality of encoded documents, respectively based on first encoding information in which a plurality of words and a plurality of first codes of a first code group are associated, words included in the plurality of documents and included in the first encoding information being encoded in the plurality of encoded documents using a processor;   performing frequency counts for each of a plurality of codes in the first encoded documents encoded in the first encoding using the processor; and   second encoding the plurality of first encoded documents into a plurality of second encoded documents respectively, utilizing a result of the frequency counts using the processor.