Mutsunori Banbara and Shin-ichi Minato and Hirotaka Ono and Ryuhei Uehara.
On the Computational Complexity of Generalized Common Shape Puzzles,
arXiv:2305.10749, 2023/5/18.
Ryuhei Uehara.
Optimal solution for the fold-and-cut problem on simple folding model,
IPSJ SIG Technical Report,
2022-AL-193-13, pp. 1-4, 2023/05/10-11.
Tomoko Taniguchi, Ryuhei Uehara.
Hexagonal Puzzle Font,
IPSJ SIG Technical Report,
2022-AL-193-5, pp. 1-4, 2023/05/10-11.
塩田 拓海, 鎌田 斗南, 上原 隆平.
直方体の格子展開図における重なり,
IPSJ SIG Technical Report,
2022-AL-193-4, pp. 1-6, 2023/05/10-11.
Erik D. Demaine, Hiro Ito, Jayson Lynch, and Ryuhei Uehara.
Computational Complexity of Flattening Fixed-Angle Orthogonal Chains,
arXiv:2212.12450, 2022/12/23.
Hugo A. Akitaya, Erik D. Demaine, Matias Korman, Irina Kostitsyna,
Irene Parada, Willem Sonke, Bettina Speckmann, Ryuhei Uehara, Jules Wulms.
Compacting Squares: Input-Sensitive In-Place Reconfiguration of Sliding Squares,
arXiv:2105.07997, 2021/12/14.
Mutsunori Banbara, Kenji Hashimoto, Takashi Horiyama, Shin-ichi
Minato, Kakeru Nakamura, Masaaki Nishino, Masahiko Sakai, Ryuhei Uehara,
Yushi Uno, and Norihito Yasuda.
Solving Rep-tile by Computers: Performance of Solvers and Analyses of Solutions,
arXiv:2110.05184, 2021/10/12.
千田 皐汰, Erik D. Demaine, Martin L. Demaine, David Eppstein, Adam Hesterberg,
堀山 貴史, John Iacono, 伊藤 大雄, Stefan Langerman, 上原 隆平, 宇野 裕之.
ポリオミノと格子凸多角形による多層タイル張り,
IEICE Technical Report, COMP2021-15, pp. 11-18, 2021/10/23.
Erik D. Demaine, Martin L. Demaine, Yevhenii Diomidov, Tonan Kamata, Ryuhei Uehara, and Hanyu Alice Zhang.
Any Regular Polyhedron Can Transform to Another by O(1) Refoldings,
arXiv:2109.03997, 2021/09/09.
Masaaki Kanzaki, Yota Otachi, and Ryuhei Uehara.
Computational Complexity of Jumping Block Puzzles,
arXiv:2109.02213, 2021/09/07.
佐藤 隆太郎, 上原 隆平.
15パズルの変形とその最大の最短手数に関する研究,
IPSJ SIG Technical Report, 2020-AL-182-10, pp. 1-6, 2021/03/17.
姚 嘉威, 上原 隆平.
Rolling Cube Puzzlesの最小手数に関する研究,
IPSJ SIG Technical Report, 2020-AL-182-9, pp. 1-8, 2021/03/17.
岡田 珠美, 上原 隆平.
Rep-cube: 立方体の展開図の展開図分解に関する研究,
IPSJ SIG Technical Report, 2020-AL-182-2, pp. 1-6, 2021/03/17.
Yiyang Jia, Jun Mitani, Ryuhei Uehara.
A comparison of different folding models in valid overlapping order problems,
日本応用数理学会第17回 研究部会連合発表会,
2021/03/05. (Online)
岡田 珠美, 上原 隆平.
立方体の展開図の展開図分割Rep-cubeに関する研究,
LAシンポジウム, pp. 10:1-5, 2021/02/03.
鎌田 斗南, 上原 隆平.
立体の折り直しによる遷移問題の研究,
LAシンポジウム, pp. 5:1-5, 2021/02/02.
Takashi Horiyama, Fabian Klute, Matias Korman, Irene Parada, Ryuhei Uehara, and Katsuhisa Yamanaka.
Efficient Segment Folding is Hard.
arXiv:2012.11062, 2020/12/21.
Giuseppe Antonio Di Luna, Ryuhei Uehara, Giovanni Viglietta, and Yukiko Yamauchi.
Gathering on a Circle with Limited Visibility by Anonymous Oblivious Robots.
arXiv:2005.07917, 2020/05/16.
Guoxin Hu, Shin-ichi Nakano, Ryuhei Uehara and Takeaki Uno.
Simple Fold and Cut Problem for Line Segments,
IEICE Technical Report, COMP2019-20, pp. 19-25, 2019/10/25.
Takehiro Ito, Jun Kawahara, Shin-ichi Minato, Yota Otachi,
Toshiki Saitoh, Akira Suzuki, Ryuhei Uehara, Takeaki Uno,
Katsuhisa Yamanaka, and Ryo Yoshinaka.
Shortest Universal Sequences of Adjacent Transpositions,
IEICE Technical Report, COMP2019-10, pp. 1-5, 2019/09/02.
Yasuaki Kobayashi, Koki Suetsugu, Hideki Tsuiki, and Ryuhei Uehara.
On the Complexity of Lattice Puzzle,
IEICE Technical Report, COMP2019-2, pp. 15-22, 2019/05/10.
Koji Ouchi, Kazuaki Yamazaki, and Ryuhei Uehara.
Practically Linear Time Accurate Algorithm for Estimation of Silhouette after Folding Crease Pattern,
IEICE Technical Report,
COMP2017-8, Vol. 117, No. 28, pp. 55-60, 2017/05/12-13.
Duc A. Hoang and Ryuhei Uehara.
Polynomial-Time Algorithms for Sliding Tokens on Cactus Graphs
and Block Graphs,
arXiv:1705.00429, May 1, 2017.
Erik D. Demaine, Matias Korman, Jason S. Ku, Joseph S. B. Mitchell,
Yota Otachi, André van Renssen, Marcel Roeloffzen, Ryuhei Uehara, Yushi Uno.
Symmetric Assembly Puzzles are Hard, Beyond a Few Pieces,
arXiv:1703.02671, March 8, 2017.
Taishi Oikawa, Kazuaki Yamazaki, Tomoko Taniguchi, Ryuhei Uehara.
Development of Peg Solitaire Font,
IEICE Technical Report, COMP2016-50, Vol. 116 No. 503, pp. 1-4, 2017/03/07.
Xu Dawei and Ryuhei Uehara.
Enumeration of all developments,
SuperCon 2016, poster, 2016/11/13-16.
Itsuki Kanemoto, Toshiki Saitoh, Masashi Kiyomi, and Ryuhei Uehara.
Counting the Number of Solutions for Peg Solitaire,
IEICE Technical Report,
COMP2016-14, Vol. 116, No. 211, pp. 1-5, 2016/09/06.
Kyle Burke, Erik D. Demaine, Harrison Gregg, Robert A. Hearn,
Adam Hesterberg, Michael Hoffmann, Hiro Ito, Irina Kostitsyna,
Jody Leonard, Maarten Löffler, Aaron Santiago, Christiane
Schmidt, Ryuhei Uehara, Yushi Uno, Aaron Williams.
Single-Player and Two-Player Buttons & Scissors Games,
arXiv:1607.01826, Jul 6, 2016.
Katsuhisa Yamanaka, Erik D. Demaine, Takashi Horiyama,
Akitoshi Kawamura, Shin-ichi Nakano, Yoshio Okamoto, Toshiki
Saitoh, Akira Suzuki, Ryuhei Uehara, and Takeaki Uno.
Computational Complexity of Sequential Token Swapping Problem,
IEICE Technical Report,
COMP2016-13, Vol. 116, No. 116, pp. 115-121, 2016/06/24-25.
藤井 淳,上原 隆平. 直並列グラフの列挙.
IPSJ SIG Technical Report, 2015-AL-157-9, pp. 1-7, 2016/03/06.
Duc A. Hoang and Ryuhei Uehara.
Sliding token on unicyclick graphs.
IPSJ SIG Technical Report, 2015-AL-157-5, pp. 1-7, 2016/03/06.
Takeshi Yamada and Ryuhei Uehara.
Shortest Reconfiguration of Sliding Tokens on a Caterpillar.
arXiv:1511.00243, November 1, 2015.
Takeshi Yamada and Ryuhei Uehara.
Shortest Reconfiguration of Sliding Tokens on a Caterpillar.
IPSJ SIG Technical Report, 2015-AL-155-1, pp. 1-8, 2015/11/20.
Toshiki Saitoh, Takashi Horiyama, David Kirkpatrick, Yota Otachi, Ryuhei Uehara, and Yushi Uno.
Space Efficient Greedy Algorithms on Intervals.
IPSJ SIG Technical Report, 2015-AL-154-4, pp. 1-7, 2015/09/28.
Takehiro Ito, Yota Otachi, Toshiki Saitoh, Hisayuki Satoh,
Akira Suzuki, Kei Uchizawa, Ryuhei Uehara, Katsuhisa
Yamanaka, and Xiao Zhou.
Computational Complexity of Competitive Diffusion on (Un)weighted Graphs.
IPSJ SIG Technical Report, 2015-AL-154-8, pp. 1-6 , 2015/09/28.
Takashi Horiyama, Yoshio Okamoto, and Ryuhei Uehara.
Ls in L and Sphinxes in Sphinx.
IPSJ SIG Technical Report, 2015-AL-154-9, pp. 1-3 , 2015/09/28.
Kazuho Katsumata and Ryuhei Uehara.
The Convex Configurations of Dissection Puzzles with Seven Pieces.
IPSJ SIG Technical Report, 2015-AL-152-9, pp. 1-4, 2015/03/03.
Takehiro Ito, Yota Otachi, Toshiki Saitoh, Hisayuki Satoh,
Akira Suzuki, Kei Uchizawa, Ryuhei Uehara, Katsuhisa Yamanaka
and Xiao Zhou.
Computational Complexity of Competitive Diffusion on (Un)weighted Graphs,
arXiv:1412.3334, Dec 11, 2014.
Zachary Abel, Erik D. Demaine, Martin L. Demaine, David
Eppstein, Anna Lubiw and Ryuhei Uehara.
Flat Foldings of Plane Graphs with Prescribed Angles and Edge Lengths,
arXiv:1408.6771, Aug 28, 2014.
Eli Fox-Epstein, and Ryuhei Uehara.
The Convex Configurations of ``Sei Shonagon Chie no Ita'' and Other Dissection Puzzles,
arXiv:1407.1923, July 8, 2014.
Erik D. Demaine, Martin L. Demaine, Eli Fox-Epstein, Duc A. Hoang,
Takehiro Ito, Hirotaka Ono, Yota Otachi, Ryuhei Uehara, Takeshi Yamada.
Polynomial-Time Algorithm for Sliding Tokens on Trees,
arXiv:1406.6576, June 25, 2014.
Colin Cooper, Alan Frieze, Ryuhei Uehara.
The height of random k-trees and related branching processes,
arXiv:1309.4342, April 29, 2014.
Matsuo Konagaya, Yota Otachi, and Ryuhei Uehara.
Polynomial-Time Algorithms for Subgraph Isomorphism in
Small Graph Classes of Perfect Graphs,
IPSJ SIG Technical Report, 2013-AL-147-12, pp. 1-6, 2014/03/03-04.
山田 武,上原 隆平.
キャタピラグラフの独立点集合遷移問題に対する多項式時間アルゴリズム,
IPSJ SIG Technical Report, 2013-AL-147-11, pp. 1-5, 2014/03/03-04.
Erik D. Demaine,
Martin L. Demaine, and
Ryuhei Uehara.
Zipper Unfolding of Simple Convex Polyhedra,
IPSJ SIG Technical Report, 2013-AL-146-4, pp. 1-6, 2014/01/30-31.
Erik D. Demaine,
Martin L. Demaine,
Takehiro Ito, Hirotaka Ono, and
Ryuhei Uehara.
Algorithms for independent set reconfiguration problem on graphs,
IEICE Technical Report,
COMP2013-39, Vol. 113, No. 371, pp. 7-14, 2013/12/20-21.
Zachary Abel,
Erik D. Demaine,
Martin L. Demaine,
Hiro Ito,
Jack Snoeyink, and Ryuhei Uehara.
Bumpy Pyramid Folding Problem,
IPSJ SIG Technical Report, 2013-AL-145-9, pp. 1-7, 2013/11/6-7.
Zachary Abel,
Erik D. Demaine,
Martin L. Demaine,
Takashi Horiyama, and
Ryuhei Uehara.
Computational Complexity of Piano-Hinged Dissections,
IPSJ SIG Technical Report, 2013-AL-144-6, pp. 1-6, 2013/5/17-18.
Erik D. Demaine, Yoshio Okamoto, Ryuhei Uehara, and Yushi Uno.
On Computational Complexity and an Integer Programming model of Shakashaka,
IEICE Technical Report,
COMP2013-8, Vol. 113, No. 14, pp. 43-48, 2012/4/24.
Hiroyuki Fukui, Yota Otachi, Ryuhei Uehara, Takeaki Uno, and Yushi Uno.
On Complexity of Flooding Games on Graphs with Interval Representations,
arXiv:1206.6201, 2013/01/28.
Takashi Horiyama,
Takehiro Ito,
Keita Nakatsuka,
Akira Suzuki,
Ryuhei Uehara.
On the Complexity of Packing Trominoes,
IEICE Technical Report,
COMP2012-40, Vol. 112, No. 272, pp. 37-43, 2012/10/31.
Hiroyuki Fukui, Ryuhei Uehara, Takeaki Uno, and Yushi Uno.
On Complexity of Flooding Games on Graphs with Interval
Representations,
arXiv:1206.6201, 2012/06/27.
[Note] This article was updated on 2013/01/28 with additional coauthor Yota Otachi.
Takehiro Ito, Shin-ichi Nakano, Yoshio Okamoto,
Yota Otachi, Ryuhei Uehara, Takeaki Uno, Yushi Uno.
Approximation for the Geometric Unique Coverage Problem on Unit Squares,
IEICE Technical Report,
COMP2012-24, Vol. 112, No. 93, pp. 95-101, 2012/06/21.
Takashi Horiyama, Takehiro Ito, Natsuda Kaothanthong,
Hirotaka Ono, Yota Otachi, Takeshi Tokuyama, Ryuhei Uehara, Takeaki Uno.
On the Base-Line Location Problem for the Maximum Weight
Region Decomposable into Base-Monotone Shapes,
IEICE Technical Report,
COMP2012-6, Vol. 112, No. 21, pp. 37-43, 2012/04/27.
Hiroyuki Fukui, Ryuhei Uehara, Takeaki Uno, and Yushi Uno.
On Complexity of Flood Filling Games on Interval Graph Classes,
IPSJ SIG Technical Report, 2011-AL-139-7, pp. 1-7, 2012/3/14.
Takeaki Uno, Ryuhei Uehara, and Shin-ichi Nakano.
On the number of reduced tree, cographs, and series-parallel graphs by compression,
IPSJ SIG Technical Report, 2011-AL-137-6, pp. 1-8, 2011/11/18.
Hiroyuki Fukui, Akihiro Nakanishi, Ryuhei Uehara, Takeaki
Uno, and Yushi Uno.
The Complexity of Free Flood Filling Games,
IPSJ SIG Technical Report, 2011-AL-136-7, pp. 1-5, 2011/9/6.
Yoshio Okamoto, Yota Otachi, Ryuhei Uehara, and Takeaki Uno.
Hardness Results and an Exact Exponential Algorithm for the
Spanning Tree Congestion Problem,
IPSJ SIG Technical Report, 2011-AL-136-5, pp. 1-8, 2011/9/6.
Toshihiro Shirakawa, Takashi Horiyama, and Ryuhei Uehara.
Construction of Common Unfolding of a Regular Tetrahedron and a Cube,
IPSJ SIG Technical Report, 2010-AL-135-10, pp. 1-5, 2011/5/16.
Takuya Umesato, Toshiki Saitoh, Ryuhei Uehara, and Hiro Ito.
Complexity of the stamp folding problem,
IPSJ SIG Technical Report, 2010-AL-135-9, pp. 1-7, 2011/5/16.
岡山 陽介,清見 礼,上原隆平.
複数の単位円による点集合の排他的被覆,
IPSJ SIG Technical Report, 2010-AL-134-19, pp. 1-8, 2011/3/7.
Arata Goto and Ryuhei Uehara.
On the Hoffman Puzzle and its generalization,
IPSJ SIG Technical Report, 2010-AL-134-18, pp. 1-4, 2011/3/7.
Takashi Horiyama and Ryuhei Uehara.
Nonexistence of Common Edge Developments of Regular Tetrahedron and Other Platonic Solids,
IPSJ SIG Technical Report, 2010-AL-132-1, pp. 1-4, 2010/11/19.
Yoshio Okamoto, Yota Otachi, and Ryuhei Uehara.
Bipartite powers of interval bigraphs,
IEICE Technical Report,
COMP2010-36, Vol. 110, No. 232, pp. 35-39, 2010/10/15.
Ryuhei Uehara.
Undecidability of Origami,
IPSJ SIG Technical Report, 2010-AL-131-11, pp. 1-3, 2010/09/22.
Tetsuo Asano, Erik D. Demaine, Martin L. Demaine, and Ryuhei Uehara.
NP-completeness of generalized Kaboozle,
IPSJ SIG Technical Report, 2010-AL-130-3, pp. 15-20, 2010/5/19.
Ryuhei Uehara.
Stretch Minimization Problem of a Strip Paper,
IPSJ SIG Technical Report, 2010-AL-130-2, pp. 7-13, 2010/5/19.
Toshiki Saito, Masashi Kiyomi, and Ryuhei Uehara.
Voronoi Game on a Path,
IEICE Technical Report, COMP2010-10, pp. 1-5, 2010/5/19.
Toshiki Saito, Masashi Kiyomi, and Ryuhei Uehara.
Reconstruction Algorithms for Permutation Graphs and Distance-Hereditary Graphs,
IPSJ SIG Technical Report, 2009-AL-126, pp. 5:1-5:?, 2009/9/15.
Toshiki Saitoh, Yota Otachi, Katuhisa Yamanaka, and Ryuhei Uehara.
Random Generation and Enumeration of Bipartite Permutation Graphs,
IEICE Technical Report, COMP2009-??, pp. ??-??, 2009/9/14.
Takehiro Ito, Yuichiro Miyamoto, Hirotaka Ono, Hisao Tamaki, Ryuhei Uehara.
Graph Orientation Problems for Multiple st-Reachability,
IPSJ SIG Technical Report, 2009-AL-125, pp. 5:1-5:?, 2009/7/21.
Yoshio Okamoto, Ryuhei Uehara, Takeaki Uno.
Counting the Number of Matching in Chordal and Chordal
Bipartite Graph Classes,
IEICE Technical Report, COMP2009-24, pp. 45-52, 2009/6/29.
Colin Cooper, Ryuhei Uehara.
On Scale free k-trees,
IPSJ SIG Technical Report, 2009-AL-124, pp. 2:1-2:8, 2009/5/11.
Katsuhisa Yamanaka, Shin-ichi Nakano,
Yasuko Matsui, Ryuhei Uehara, and Kento Nakada.
Efficient Enumeration of All Pseudoline Arrangements,
IPSJ SIG Technical Report, 2009-AL-124, pp. 1:1-1:6, 2009/5/11.
Tsuyoshi Ito, Masashi Kiyomi, Shinji Imahori, and Ryuhei Uehara.
Complexity of Pleats Folding,
IPSJ SIG Technical Report, 2008-AL-122-1, pp. 1-8, 2009/1/30.
Naoto Miyoshi, Mariko Ogura, Takeya Shigezumi, and Ryuhei Uehara.
Subexponential interval graphs generated by immigration-death processes,
Dept. of Math. and Comp. Sciences Research Report, B-451, 2008/12.
Katsuhisa Yamanaka, Shin-ichi Nakano,
Yasuko Matsui, Ryuhei Uehara, and Kento Nakada.
Efficient Enumeration of All Ladder Lotteries,
The 20th Workshop on Topological Graph Theory, 2008/11/24-28.
Takehiro Ito, Erik D. Demaine,
Nicholas J. A. Harvey, Christos H. Papadimitriou,
Martha Sideri, Ryuhei Uehara, and Yushi Uno.
On the Complexity of Reconfiguration Problems,
IEICE Technical Report, COMP2008-36, pp. 17-24, 2008/10/10.
Jun Mitani, Ryuhei Uehara.
Polygons Folding to Plural Incongruent Orthogonal Boxes,
IEICE Technical Report, COMP2008-23, pp. 1-8, 2008/9/11.
(Support pages are written in
English and
Japanese.)
Ryuhei Uehara.
Efficient Algorithms for Airline Problem,
IEICE Technical Report, COMP2006-34, pp.25-31, 2006/10/17.
(The results are updated; see above.)
上原 隆平.
グラフクラスとアルゴリズム,
IEICE Technical Report, Lecture talk, 2006/9/26.
(The PDF file (520263bytes) of the talk is available, but in Japanese.)
Ryuhei Uehara and Sachio Teramoto.
The complexity of a Pop-up book,
IPSJ SIG Technical Report, 2006-AL-107-10, pp.59-64, 2006/7/3.
PDF file (126431 bytes)
Sachio Teramoto, Mitsuo Motoki, Ryuhei Uehara, and Tetsuo Asano.
Heuristics for Generating a Simple Polygonalization,
IPSJ SIG Technical Report, 2006-AL-106-6, pp.41-48, 2006/5/18.
Ryuhei Uehara and Takeaki Uno.
Canonical Tree Representation of Distance Hereditary Graphs and Its Applications,
IEICE Technical Report, COMP2005-61, pp.31-38, 2006/3/22.
PDF file (183992 bytes)
Sachio Teramoto and Ryuhei Uehara.
Voronoi game on graphs and its complexity,
IPSJ SIG Technical Report, 2006-AL-104-2, pp.9-16, 2006/1/20.
See the conference version with Erik D. Demaine.
Ryuhei Uehara and Yushi Uno.
Laminar Structure of Ptolemaic Graphs and Its Applications,
IEICE Technical Report, COMP2005-30, pp.17-24, 2005/9/15.
PDF file (281249 bytes)
Ryuhei Uehara and Yushi Uno.
On the Laminar Structure of Ptolemaic and Distance Hereditary Graphs,
Complexity Seminar(Informal seminar in Japanese), 2005/3/19.
PDF file (109327 bytes).
Yoshio Okamoto, Takeaki Uno, and Ryuhei Uehara.
Counting the Independent Sets of a Chordal Graph,
IPSJ SIG Technical Report, 2004-AL-96, pp.17-24, 2004/7/27.
PDF file(217092 bytes).
Ryuhei Uehara and Yushi Uno.
Longest Paths in Small Graph Classes,
IEICE Technical Report, COMP2004-16, pp.53-60, 2004/5/20.
PDF file(231075 bytes).
Ryuhei Uehara.
Extended MPQ-trees for Probe Interval Graphs,
IPSJ SIG Technical Report, 2004-AL-93, pp.97-104, 2004/1/30.
PDF file(284234 bytes),
ps file(133396 bytes, compressed by gzip).
Andreas Brandstädt, Feodor F. Dragan, Hoang-Oanh Le, Van Bang Le, and Ryuhei Uehara.
Tree Spanners for Bipartite Graphs and Probe Interval Graphs,
IPSJ SIG Technical Report, 2003-AL-90, pp.57-64, 2003/5/23.
PDF file(314069 bytes).
Takayuki Nagoya, Ryuhei Uehara, and Seinosuke Toda.
Completeness of Graph Isomorphism Problem for Bipartite Graph Classes,
IEICE Technical Report, COMP2001-93, pp.1-5, 2002/3/12.
PostScript file
(40232 bytes, compressed by gzip).
Hironobu Aoki, Ryuhei Uehara and Koichi Yamazaki.
Expected Length of Longest Common Subsequences of Two Biased Random Strings and
Its Application, LA Symposium, 2000/7/17.
Ryuhei Uehara.
Fast Parallel Approximation Algorithms for Maximum Weight Matching Problem,
IPSJ SIG Notes, 2000-AL-71, pp.33-40, 2000/1/17.
PostScript file
(57711 bytes, compressed by gzip).
Ryuhei Uehara.
The Number of Connected Components in Graphs and Its Applications,
IEICE Technical Report, COMP99-10, pp.1-8, 1999/5/24.
PostScript file
(51038 bytes, compressed by gzip).
Ryuhei Uehara.
Tractable and Intractable Problems on Generalized Chordal Graphs,
IEICE Technical Report, COMP98-83, pp.1-8, 1999/3/24.
PostScript file
(58356 bytes, compressed by gzip).
Mitsuo Motoki and Ryuhei Uehara.
Unique Solution Instance Generation for the 3-Satisfiability
(3SAT) Problem,
IEICE Technical Report, COMP98-54, pp.25-32, 1998/11/20.
PostScript file
(91603 bytes, compressed by gzip).
Ryuhei Uehara.
Parallel Complexity of the Lexicographically First
Maximal Subgraph Problems on Restricted Graphs,
IEICE Technical Report, COMP97-68, pp.65-72, 1997/11/14.
PostScript file
(71523 bytes, compressed by gzip).
Ryuhei Uehara.
A Measure of Parallelization for the Lexicographically
First Maximal Independent Set Problem,
IPSJ SIG Notes, 97-AL-56, pp.19-26, 1997/3/14.
PostScript file
(57555 bytes, compressed by gzip).
Ryuhei Uehara, Kensei Tsuchida, and Ingo Wegener.
Optimal attribute-efficient learning of disjunction, parity,
and threshold functions,
Electronic Colloquium on Computational Complexity(ECCC),
Report TR96-061, 1996.
Ryuhei Uehara. NP-complete problems on a
3-connected cubic planar graph and their applications,
Tokyo Woman's Christian University,
Technical Report TWCU-M-0004, 1996/9.
PostScript file
(45645 bytes, compressed by gzip).
PDF file
Ryuhei Uehara, and Kensei Tsuchida. Partial
Gates and Their Identifications,
情報基礎理論ワークショップ, 1996/7/18.
IEICE Technical Report, COMP96-22, pp.1-10, 1996/7/25.
PostScript file
(63810 bytes, compressed by gzip).
Ryuhei Uehara, Zhi-Zhong Chen, and Xin He.
極大パス集合に対する効率的な並列アルゴリズムとその応用,
IPSJ SIG Notes, 96-AL-51, pp.25-32, 1996/5/29.
PostScript file can be found in
the page of conferences.
Ryuhei Uehara, Zhi-Zhong Chen, and Xin He. RNC
and NC Algorithms for Maximal Path Sets and Applications to
Superstrings with Flipping,
計算モデルと計算の複雑さに関する研究(京大数解研講究録),
Research Institute for Mathematical Sciences, Vol. 950,
pp.113-119, 1996/2/1.
PostScript file can be found in
the page of conferences.
Ryuhei Uehara. Complexity Classes Characterized
by Many Computation Paths,
情報基礎理論ワークショップ, 1995/7/19.
IEICE Technical Report, COMP95-42, pp.9-15, 1995/9/22.
PostScript file
(59125 bytes, compressed by gzip).
Ryuhei Uehara. Complexity Classes Characterized
by Semi-Random Sources,
Fundamental Studies on Computational Complexity
(京大数解研講究録),
Research Institute for Mathematical Sciences, Vol. 943,
pp.1-14, 1995/6/14.
PostScript file
(73656 bytes, compressed by gzip).
Ryuhei Uehara. Efficient Simulations by a Biased Coin,
情報基礎理論ワークショップ, pp.13-16, 1994/7/18.
PostScript file can be found in
the page of papers.
Ryuhei Uehara. A New Proof for the Monte Carlo Constructibility of loglog n,
Tokyo Woman's Christian University,
Technical Report TWCU-M-0002, 1994/8.
PostScript file
(48167 bytes, compressed by gzip).