NATURAL LANGUAGE PROCESSING SYSTEM, NATURAL LANGUAGE PROCESSING METHOD, AND NATURAL LANGUAGE PROCESSING PROGRAM

A natural language processing system including: a weight array acquisition unit that acquires a weight array related to a weight for determining a label corresponding to a character string, the weight array being generated by learning based on at least one learning character string in which a feature and a label of at least one character string including at least one character are set; a feature extraction unit that extracts a feature corresponding to a target character string; and a label determination unit that determines the label of the target character string on the basis of the learned model generated by learning, the weight array, and the extracted at least one feature.