Kazutaka Maruyama

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A program for self assessment of Japanese pronunciation by English-speaking learners was developed using a language model built with input from a language teacher in collaboration with speech engineers. This collaboration enhanced the program's capacity for accurate assessment and provides practical support to users by linking evaluation with feedback, and(More)
Speech acoustics varies from speaker to speaker, microphone to microphone, room to room, line to line, etc. Physically speaking , every speech sample is distorted. Socially speaking, however , speech is the easiest communication media for humans. In order to cope with the inevitable distortions, speech engineers have built HMMs with speech data of hundreds(More)
Because the number of Web pages is very huge, and still increasing, many people have difficulty to reach pages they want. Although social bookmarking and search engines are helpful, users still have to find pages themselves. Our goal is to recommend Web pages which are supposed to be interesting for a user, without active effort by the user. We first(More)
The amount of information on web increases explosively, so it is difficult for web users to find web pages they want. There are some approaches to resolve this problem, such as semantic web which make web information systematic, the improvement of search engines' algorithm, and so on. Dealing with web as a huge database, these technologies works well,(More)
In recent years, social networking services have come into wide use to people. Especially, one of micro blog services, Twitter is a significant service. Twitter user gets information by following other users whose tweets match his interest. Retweet is one of Twitter functions which spreads tweets to other users. Using retweets, one can read tweets(More)
Information Technology Center, The University of Tokyo provides Educational Campuswide Computing System (ECCS) to approximately 60,000 users at our university. ECCS includes computer labs for class and self-study and a mail service for staff and students. ECCS2012, launched in March 2012, focuses on integrations of hardware and various channels to access(More)
Browsing histories are often used to build user profiles for browsing supports and personalizations. But, the browsing history also contains HTTP requests generated concomitantly with user activity(concomitant request), which must be removed in order to build correct user profiles. Current filtering methods are based on rather simple characteristics of(More)