Kei+Takada

a Japanese computer scientist affiliated with the Graduate School of Information Science and Technology, [|Hokkaido University], [|Sapporo], [|Hokkaido]. Along with Masaya Honjo, Hiroyuki Iizuka, and Masahito Yamamoto, Kei Takada is author of the Hex playing program [|Ezo], which played the 17th Computer Olympiad in [|Yokohama] 2013, and the 18th Computer Olympiad in Leiden 2015. Ezo uses 2-ply alpha-beta search with an evaluation function based on the theory of [|complex networks]. The function combines a betweenness measure of the player’s two sides with a shortest path metric that accounts for the degree of important nodes, further elaborted by Kei Takada at the Advances in Computer Games 14 conference in Leiden 2015. EZO switches to a Hexy-style evaluation when remaining time becomes short. || toc =Selected Publications=
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 * Kei Takada, Masaya Honjo, Hiroyuki Iizuka, Masahito Yamamoto (**2015**). //[|Developing Computer Hex using Global and Local Evaluation based on Board Network Characteristics]//. Advances in Computer Games 14, [|slides as pdf]
 * Ryan Hayward, Jakub Pawlewicz, Kei Takada, Tony van der Valk (**2017**). //MOHEX Wins 2015 Hex 11x11 and Hex 13x13 Tournaments//. ICGA Journal, Vol. 39, No. 1 » 18th Computer Olympiad

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