PROBLEM TO BE SOLVED: To achieve faster verification time in an XML document when the XML document is compressed.;SOLUTION: An information processing device 1 accepts the data encoded using a compression dictionary 31 associating tag names and definition values of a plurality of tags with codes corresponding to the tag names and definition values of the plurality of tags. When decoding the encoded data, the information processing device verifies the decoded data using the processing functions each of which is associated with each code of a check function table 32 generated correspondingly to the compression dictionary 31.;SELECTED DRAWING: Figure 3;COPYRIGHT: (C)2018,JPO&INPIT
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