Computer-readable recording medium, encoding device, encoding method, decoding device, and decoding method

An encoding method executed by a computer, the method comprising:

• encoding a plurality of input text files to a plurality of encoded files by using a static dictionary and a dynamic dictionary, the dynamic dictionary being generated in accordance with word appearance frequencies in the plurality of text files using a processor;
• and
• generating a coupled encoded file that includes the plurality of encoded files, information on the dynamic dictionary, and position information that indicates positions of the respective plurality of encoded files using the processor.

A non-transitory computer-readable recording medium having stored therein a decoding program that causes a computer to execute a process, the process comprising:

• extracting an encoded file to be decoded from a coupled encoded file, which includes a plurality of encoded files, information on a dynamic dictionary generated in accordance with word appearance frequencies, and position information indicating positions of the respective plurality of encoded files, based on the position information that indicates the positions of the respective plurality of encoded files;
• and
• decoding the extracted encoded file by using the dynamic dictionary and a static dictionary.

An decoding method executed by a computer, the method comprising:

• extracting an encoded file to be decoded from a coupled encoded file, which includes a plurality of encoded files, information on a dynamic dictionary generated in accordance with word appearance frequencies, and position information indicating positions of the respective plurality of encoded files, based on the position information that indicates the positions of the respective plurality of encoded files using a processor;
• and
• decoding the extracted encoded file by using the dynamic dictionary and a static dictionary using the processor.