Kouichi Hirata

	2011
45		Kouichi Hirata, Yoshiyuki Yamamoto, Tetsuji Kuboyama: Improved MAX SNP-Hard Results for Finding an Edit Distance between Unordered Trees. CPM 2011: 402-415
	2010
44		Taku Aratsu, Kouichi Hirata, Tetsuji Kuboyama: Approximating Tree Edit Distance through String Edit Distance for Binary Tree Codes. Fundam. Inform. 101(3): 157-171 (2010)
	2009
43		Takashi Katoh, Hiroki Arimura, Kouichi Hirata: Mining Frequent Bipartite Episode from Event Sequences. Discovery Science 2009: 136-151
42		Akihiro Yamamoto, Kouichi Hirata, Shin-ichi Minato: The Sixth Workshop on Learning with Logics and Logics for Learning (LLLL2009). JSAI-isAI Workshops 2009: 315-316
41		Takashi Katoh, Hiroki Arimura, Kouichi Hirata: Mining Frequent k-Partite Episodes from Event Sequences. JSAI-isAI Workshops 2009: 331-344
40		Kazuya Sata, Kouichi Hirata, Kimihito Ito, Tetsuji Kuboyama: Discovering Networks for Global Propagation of Influenza A (H3N2) Viruses by Clustering. KES (2) 2009: 490-497
39		Takashi Katoh, Hiroki Arimura, Kouichi Hirata: A Polynomial-Delay Polynomial-Space Algorithm for Extracting Frequent Diamond Episodes from Event Sequences. PAKDD 2009: 172-183
38		Taishin Daigo, Kouichi Hirata: On Generating All Maximal Acyclic Subhypergraphs with Polynomial Delay. SOFSEM 2009: 181-192
37		Taku Aratsu, Kouichi Hirata, Tetsuji Kuboyama: Approximating Tree Edit Distance through String Edit Distance for Binary Tree Codes. SOFSEM 2009: 93-104
	2008
36		Tetsuji Kuboyama, Kouichi Hirata, Kiyoko F. Aoki-Kinoshita: An Efficient Unordered Tree Kernel and Its Application to Glycan Classification. PAKDD 2008: 184-195
35		Takashi Katoh, Kouichi Hirata: A Simple Characterization on Serially Constructible Episodes. PAKDD 2008: 600-607
34		Arnoldo José Müller Molina, Kouichi Hirata, Takeshi Shinohara: A Tree Distance Function Based on Multi-sets. PAKDD Workshops 2008: 87-98
33		Taku Aratsu, Kouichi Hirata, Tetsuji Kuboyama: Sibling Distance for Rooted Labeled Trees. PAKDD Workshops 2008: 99-110
	2007
32		Akihiro Yamamoto, Kouichi Hirata: The Fifth Workshop on Learning with Logics and Logics for Learning (LLLL2007). JSAI 2007: 305-306
31		Takashi Katoh, Kouichi Hirata, Masateru Harao: Mining Frequent Diamond Episodes from Event Sequences. MDAI 2007: 477-488
30		Kengo Kubo, Keizo Yamada, Kouichi Hirata, Masateru Harao: Efficient schema matching algorithm based on pre-checking. Systems and Computers in Japan 38(4): 84-92 (2007)
	2006
29		Takashi Katoh, Kouichi Hirata, Masateru Harao: Mining Sectorial Episodes from Event Sequences. Discovery Science 2006: 137-148
28		Akihiro Yamamoto, Kouichi Hirata, Ken Satoh: The Fourth Workshop on Learning with Logics and Logics for Learning (LLLL2006). JSAI 2006: 249-250
	2005
27		Nobuhito Ohkura, Kouichi Hirata, Tetsuji Kuboyama, Masateru Harao: The q-Gram Distance for Ordered Unlabeled Trees. Discovery Science 2005: 189-202
26		Kouichi Hirata, Megumi Kuwabara, Masateru Harao: On Finding Acyclic Subhypergraphs. FCT 2005: 491-503
25		Kosuke Ono, Masateru Harao, Kouichi Hirata: Multi-Agent Based Modeling and Simulation of Consensus Formations in Arguments. ICITA (1) 2005: 264-267
24		Shogo Ozaki, Masateru Harao, Kouichi Hirata: Performance Analysis for Construction of a Performance Practice Support System. ICITA (2) 2005: 415-418
23		Akihiro Yamamoto, Kouichi Hirata: Workshop on Learning with Logics and Logics for Learning (LLLL). JSAI Workshops 2005: 167-168
22		Megumi Kuwabara, Takeshi Ogawa, Kouichi Hirata, Masateru Harao: On Generalization and Subsumption for Ordered Clauses. JSAI Workshops 2005: 212-223
21		Eiju Hirowatari, Kouichi Hirata, Tetsuhiro Miyahara: Prediction of Recursive Real-Valued Functions from Finite Examples. JSAI Workshops 2005: 224-234
20		Kosuke Ono, Takashi Hata, Toyofumi Maetani, Masateru Harao, Kouichi Hirata: Development of a Multi-Agent Based Generic Traffic Simulator. JSAI Workshops 2005: 249-260
19		Yoshikazu Shima, Kouichi Hirata, Masateru Harao: Extraction of Frequent Few-Overlapped Monotone DNF Formulas with Depth-First Pruning. PAKDD 2005: 50-60
18		Kouichi Hirata: Prediction-hardness of acyclic conjunctive queries. Theor. Comput. Sci. 348(1): 84-94 (2005)
	2004
17		Yoshikazu Shima, Shinji Mitsuishi, Kouichi Hirata, Masateru Harao: Extracting Minimal and Closed Monotone DNF Formulas. Discovery Science 2004: 298-305
16		Kouichi Hirata, Takeshi Ogawa, Masateru Harao: Generalization Algorithms for Second-Order Terms. ILP 2004: 147-163
15		Kouichi Hirata, Keizo Yamada, Masateru Harao: Tractable and intractable second-order matching problems. J. Symb. Comput. 37(5): 611-628 (2004)
	2003
14		Kouichi Hirata, Ryosuke Nagazumi, Masateru Harao: Extraction of Coverings as Monotone DNF Formulas. Discovery Science 2003: 166-179
13		Kouichi Hirata: On Condensation of a Clause. ILP 2003: 164-179
12		Hiroshi Sakamoto, Kouichi Hirata, Hiroki Arimura: Learning elementary formal systems with queries. Theor. Comput. Sci. 1(298): 21-50 (2003)
	2001
11		Kouichi Hirata, Hiroshi Sakamoto: Prediction-Preserving Reducibility with Membership Queries on Formal Languages. FCT 2001: 172-183
	2000
10		Kouichi Hirata: On the Hardness of Learning Acyclic Conjunctive Queries. ALT 2000: 238-251
9		Noriko Sugimoto, Takashi Toyoshima, Shinichi Shimozono, Kouichi Hirata: Constructive Learning of Context-Free Languages with a Subpansive Tree. ICGI 2000: 270-283
	1999
8		Kouichi Hirata: Flattening and Implication. ATL 1999: 157-168
7		Kouichi Hirata, Keizo Yamada, Masateru Harao: Tractable and Intractable Second-Order Matching Problems. COCOON 1999: 432-441
	1998
6		Shinichi Shimozono, Kouichi Hirata, Ayumi Shinohara: On the Hardness of Approximating the minimum Consistent Acyclic DFA and Decision Diagram. Inf. Process. Lett. 66(4): 165-170 (1998)
	1996
5		Noriko Sugimoto, Kouichi Hirata, Hiroki Ishizaka: Constructive Learning of Translations Based on Dictionaries. ALT 1996: 177-184
4		Kouichi Hirata, Shinichi Shimozono, Ayumi Shinohara: On the Hardness of Approximating the Minimum Consistent OBDD Problem. SWAT 1996: 112-123
3		Kouichi Hirata: Rule-Generating Abduction for Recursive Prolog. Informatica (Slovenia) 20(1): (1996)
	1994
2		Kouichi Hirata: Rule-Generating Abduction for Recursive Prolog. AII/ALT 1994: 121-136
	1993
1		Kouichi Hirata: A classification of abduction: abduction for logic programming. Machine Intelligence 14 1993: 405-

Coauthor Index

1	Kiyoko F. Aoki-Kinoshita (Kiyoko F. Aoki)	[36]
2	Taku Aratsu	[33] [37] [44]
3	Hiroki Arimura	[12] [39] [41] [43]
4	Taishin Daigo	[38]
5	Masateru Harao	[7] [14] [15] [16] [17] [19] [20] [22] [24] [25] [26] [27] [29] [30] [31]
6	Takashi Hata	[20]
7	Eiju Hirowatari	[21]
8	Hiroki Ishizaka	[5]
9	Kimihito Ito	[40]
10	Takashi Katoh	[29] [31] [35] [39] [41] [43]
11	Kengo Kubo	[30]
12	Tetsuji Kuboyama	[27] [33] [36] [37] [40] [44] [45]
13	Megumi Kuwabara	[22] [26]
14	Toyofumi Maetani	[20]
15	Shin-ichi Minato	[42]
16	Shinji Mitsuishi	[17]
17	Tetsuhiro Miyahara	[21]
18	Arnoldo José Müller Molina	[34]
19	Ryosuke Nagazumi	[14]
20	Takeshi Ogawa	[16] [22]
21	Nobuhito Ohkura	[27]
22	Kosuke Ono	[20] [25]
23	Shogo Ozaki	[24]
24	Hiroshi Sakamoto	[11] [12]
25	Kazuya Sata	[40]
26	Ken Satoh	[28]
27	Yoshikazu Shima	[17] [19]
28	Shinichi Shimozono	[4] [6] [9]
29	Ayumi Shinohara	[4] [6]
30	Takeshi Shinohara	[34]
31	Noriko Sugimoto	[5] [9]
32	Takashi Toyoshima	[9]
33	Keizo Yamada	[7] [15] [30]
34	Akihiro Yamamoto	[23] [28] [32] [42]
35	Yoshiyuki Yamamoto	[45]

Colors in the list of coauthors

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