Japanese sentence analyzer and Japanese sentence analysis method

摘要

PROBLEM TO BE SOLVED: To provide Japanese sentence analyzing device and method capable of accurately detecting only a character string forming an unregistered word out of a character string including the unregistered word and registering the word consisting of the detected character string as an unregistered word. SOLUTION: A morphem analyzing part 3 divides an inputted character string into words by using a dictionary file 4 for registering data indicating the character string of a word and the attribute of the word. When a word of which character string length consists of one character, a word of a prescribed part of speech or a word having less possibility of forming a composite word is included in the divided words, a word candidate detection part 5 detects a character string connecting the word to a preceding or succeeding adjacent word as an unregistered word (word candidate) and temporarily records the word in the dictionary file 4. Then a word candidate verifying part 7 verifies the validity of the temporarily registered word candidate. The word candidate of which validity is verified is formally registered in a word candidate formal registration part 10.