DOCUMENT PROCESSOR

PROBLEM TO BE SOLVED: To automatically divide an input document corresponding to the change of a contex or a topic by providing a word life computing element obtaining information on a word life in which the word operates an asserting function in a document based on the appearing position of an optical word in the input document so as to divide the input document by referring to life information on this word. SOLUTION: When an optical input document 1 is inputted to the life computing element 2, the input document 1 is divided into sentences being computing units. After being divided, the respective sentences are sent to a computing object recognizing means 21 in order to recognize the computing objects. Next, after obtaining the potential of the word through the use of a potential computing means 22, the life of the word is estimated through the use of a life estimating means 23. Namely the potential distribution of the word, the life of the word, etc., are calculated from the potential of each word in a life table 3 and the result is stored in the slot of the life table 3. After then the life computing element 2 starts a document dividing filter 4 and a feature word extraction filter 5.