A new readers’ page is available for discussion, program/data, and errata. This year, additional three books that will be published. They are being read in Japanese (Kyoritsu-Shuppan).

My paper “Forest Learning from Data and its Universal Coding” was accepted in the IEEE Transactions on Information Theory. The paper was partially presented at the 2016 IEEE International Symposium on Information Theory (ISIT-16) held in Barcelona, Spain. The review took more than two years, but no substantial problem was pointed out. The paper proposes a… Read More »

I used the following materials for the classes on July 18 and 25. The third problem of  set #2 has been removed. Just do the three problems for set #2. A Bayesian Approach to Data Compression Forest Learning from Data The Problem Set #1 and Hints The Problem Set #2 and Hints If your graph… Read More »

I have become Professor at Division of Mathematical Science, Osaka University, from Associate Professor at Department of Mathematics, Osaka University. The two offices are close each other.

We visited Botswana and enjoy see wild animals such as elephants, lionsl, giraffes, hippopots, crocodiles, etc.  

From Botswana,  I flew to Cape Town via Johannesburg with my daughter and wife. When I was an elementary school pupil, I dreamed of visiting Cape of Good Hope (Kiboho in Japanese). From Japan, it is very far (15,000 km), and one hour drive from Cape Central. Very few Japanese visit there. The left and right… Read More »