STATISTICAL AND MINING SYSTEM, UTTERANCE TERMINAL, STATISTICAL AND MINING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a system which performs statistical processing or mining in extended real space while concealing attribute information of speakers.SOLUTION: A statistical and mining system comprises: space provision means having a space provision recording section for providing extended real space; multiple concealment calculation means; and analysis means. The analysis means has an arithmetic acquisition section, a plaintext calculation section and a concealment calculation request section. The arithmetic acquisition section acquires the arithmetic required for utterance objects and attribute information. The plaintext calculation section performs calculations, which are performed without using encrypted attribute information. The concealment calculation request section requests all the concealment calculation means to perform concealment calculations, which are performed by using encrypted attribute information. All the concealment calculation means performs concealment calculations in cooperation by using the concealed and divided encrypted attribute information pieces or encrypted attribute information without revealing attribute information.