How to automatically extract information on the cause of disaster

摘要

The present invention relates to a method for automatically extracting only a sentence directly related to a disaster from among a plurality of disaster records provided to a computer, Disaster cause information automatic extraction technology is a natural language processing technology that searches and extracts sentences that can become disaster cause information from disaster records. It is about the algorithm for searching the disaster cause information sentence In a method for automatically extracting only a sentence directly related to a disaster from among a plurality of disaster records provided to a computer, A disaster cause keyword dictionary construction process that uses existing disaster records containing disaster keywords to produce a disaster cause keyword dictionary, but includes the original sentence for each disaster keyword; A pre-processing process of the disaster cause keyword dictionary for constructing a database for each disaster keyword by extracting only morphemes from the original sentences for each disaster keyword in the disaster cause keyword dictionary; A disaster record preprocessing process that separates the disaster records to be investigated into sentences, extracts only morphemes from each sentence, and creates a database for each sentence; The morphemes of each sentence extracted in the disaster record pre-processing process are compared with morphemes in all disaster keyword sentences extracted in the pre-processing process of the disaster cause keyword dictionary. It is characterized in that it includes the process of extracting the disaster cause information to be determined.