Document information extraction device and document information extraction method

摘要

PROBLEM TO BE SOLVED: To provide a document information extraction device and a document information extraction method for efficiently extracting useful information used for MA (Materials Information) or the like from a huge amount of data such as a patent document. A document information extraction device 100 uses a storage unit 110 to classify words extracted from an extraction source document into categories and a value indicating the degree of conformity with the category to which the words are classified. Category probability table (before adjustment) 112 that contains information indicating a certain category probability, and category probability table (before adjustment) by changing the category probability of the category probability table (before adjustment) based on the structure of sentences containing words in the document. The category probability table (after adjustment) 117 generated by adjusting the previous) is stored. [Selection diagram] FIG. 11