ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,547,838, issued on Feb. 10, was assigned to RAKUTEN GROUP INC. (Tokyo).

"Sentiment analysis system, sentiment analysis method, and information storage medium" was invented by Yuki Nakayama (Tokyo) and Koji Murakami (Eastchester, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a sentiment analysis system including at least one processor configured to: acquire a first comment which relates to a service, and which is input by a user who uses the service; execute clustering relating to the first comment; acquire a sentiment word relating to a sentiment about the service based on an execution result of the clustering; and analyze the sentimen...