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Purpose and Background of the Research


Discrete structures are foundational material for computer science and mathematics. Many problems solved by computers can be decomposed into discrete structures using simple primitive algebraic operations. It is very important how to represent large-scale discrete structural data and to execute their operations efficiently. The project leader has been leading "JST ERATO Minato Discrete Structure Manipulation System Project" for six years. In this project, he has studied discrete structure manipulation systems using Zero-suppressed Binary Decision Diagrams (ZDDs) and their practical applications. As the results of the project, they developed novel techniques for enumerating, compressing and indexing large-scale data based on ZDDs, and they are very effective for real-life problems. Many researchers are now interested in these techniques, and several number of related research projects has been started. This research project focus on the core algorithms of discrete structure manipulation, and we will continue to maintain a firm research community in the center of the other related research projects.

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Received the Best Paper Award of UBICOMM 2016

The paper "Verifying Scenarios of Proximity-based Federations among Smart Objects through Model Checking" written by Reona Minoda, Yuzuru Tanaka, and Shin-ichi Minato received the Best Paper Award of The Tenth International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies (UBICOMM 2016).
(January 17, 2017 09:55 By Ishihata)
 

Our result on exact influence spread computation has been accepted to WWW-2017.

Our paper "Exact Computation of Influence Spread by Binary Decision Diagrams" has been accepted to the 26th World Wide Web Conference (WWW-2017.) This is a joint work with Dr. Takanori Maehara.
(December 20, 2016 16:19 By Ishihata)
 

Our result on prefecture-block enumeration has been press-released.

Our research result has been press-released from Hokkaido Univ. as here. (only in Japanese)
Detailed explanation with animation is shown here .
(September 2, 2016 10:37 By minato)
 

Our animation movie becomes a regular exhibition in Hokkaido University Museum

Our animation movie "Time with class! Let's count!" becomes a regular exhibition in the Hokkaido University Museum. The renewed exhibition starts from July 26th, reopen after renovating.
(July 25, 2016 19:19 By minato)
 

Document folders featuring "Combinatorial Explosion!” is now on sale.

(January 13, 2016 08:02 By Yasuda)