IR
Anthology
Community
Sumio
Fujita
2026
doi
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Retrieval of LoRA Models based on Layer-Wise Weight Embedding without Metadata.
Yuro Kanada
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Yuma Oe
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Huu-Long Pham
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Makoto P. Kato
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Hiroaki Ohshima
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Sumio Fujita
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Yoshiyuki Shoji
Proceedings of the 2026 International Conference on Multimedia Retrieval, ICMR 2026, Amsterdam, The Netherlands, June 16-19, 2026
doi
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Which LoRA Should Be Merged Next? Retrieving an Additional LoRA from a Target Image.
Daichi Sugita
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Huu-Long Pham
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Makoto P. Kato
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Hiroaki Ohshima
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Sumio Fujita
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Yoshiyuki Shoji
Proceedings of the 2026 International Conference on Multimedia Retrieval, ICMR 2026, Amsterdam, The Netherlands, June 16-19, 2026
2025
doi
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Effect of Model Merging in Domain-Specific Ad-hoc Retrieval.
Taiga Sasaki
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Takehiro Yamamoto
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Hiroaki Ohshima
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Sumio Fujita
Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025
2024
doi
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Over-penalization for Extra Information in Neural IR Models.
Kota Usuha
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Makoto P. Kato
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Sumio Fujita
Proceedings of the 33rd ACM International Conference on Information and Knowledge Management, CIKM 2024, Boise, ID, USA, October 21-25, 2024
2023
doi
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Simpler is Much Faster: Fair and Independent Inner Product Search.
Kazuyoshi Aoyama
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Daichi Amagata
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Sumio Fujita
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Takahiro Hara
Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2023, Taipei, Taiwan, July 23-27, 2023
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University of Tsukuba Team at the TREC 2023 Deep Learning Track.
Kaiyu Yang
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Lingzhen Zheng
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Haitao Yu
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Sumio Fujita
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Hideo Joho
The Thirty-Second Text REtrieval Conference Proceedings (TREC 2023), Gaithersburg, MD, USA, November 14-17, 2023
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University of Tsukuba Team at the TREC 2023 Interactive Knowledge Assistance Track.
Lingzhen Zheng
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Kaiyu Yang
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Haitao Yu
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Sumio Fujita
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Hideo Joho
The Thirty-Second Text REtrieval Conference Proceedings (TREC 2023), Gaithersburg, MD, USA, November 14-17, 2023
2022
doi
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Selectively Expanding Queries and Documents for News Background Linking.
Lirong Zhang
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Hideo Joho
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Sumio Fujita
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Hai-Tao Yu
Proceedings of the 31st ACM International Conference on Information & Knowledge Management, Atlanta, GA, USA, October 17-21, 2022
doi
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Do Extractive Summarization Algorithms Amplify Lexical Bias in News Articles?
Rei Shimizu
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Sumio Fujita
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Tetsuya Sakai
ICTIR '22: The 2022 ACM SIGIR International Conference on the Theory of Information Retrieval, Madrid, Spain, July 11 - 12, 2022
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KASYS at the NTCIR-16 WWW-4 Task.
Kota Usuha
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Kohei Shinden
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Makoto P. Kato
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Sumio Fujita
Proceedings of the 16th NTCIR Conference on Evaluation of Information Access Technologies, NTCIR 2022, Tokyo, Japan, June 14-17, 2022
2021
doi
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How Do Users Revise Zero-Hit Product Search Queries?
Yuki Amemiya
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Tomohiro Manabe
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Sumio Fujita
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Tetsuya Sakai
Advances in Information Retrieval - 43rd European Conference on IR Research, ECIR 2021, Virtual Event, March 28 - April 1, 2021, Proceedings, Part II
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TKB48 at TREC 2021 Conversational Assistance Track.
Yubo Fang
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Hideo Joho
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Sumio Fujita
Proceedings of the Thirtieth Text REtrieval Conference, TREC 2021, online, November 15-19, 2021
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TKB48 at TREC 2021 Fairness Ranking Track.
Zhuoqi Jin
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Hideo Joho
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Sumio Fujita
Proceedings of the Thirtieth Text REtrieval Conference, TREC 2021, online, November 15-19, 2021
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TKB48 at TREC 2021 News Track.
Lirong Zhang
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Hideo Joho
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Sumio Fujita
Proceedings of the Thirtieth Text REtrieval Conference, TREC 2021, online, November 15-19, 2021
2020
doi
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What Rankers Can be Statistically Distinguished in Multileaved Comparisons?
Makoto P. Kato
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Akiomi Nishida
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Tomohiro Manabe
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Sumio Fujita
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Takehiro Yamamoto
CIKM '20: The 29th ACM International Conference on Information and Knowledge Management, Virtual Event, Ireland, October 19-23, 2020
doi
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Automatic Evaluation of Iconic Image Retrieval based on Colour, Shape, and Texture.
Riku Togashi
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Sumio Fujita
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Tetsuya Sakai
Proceedings of the 2020 on International Conference on Multimedia Retrieval, ICMR 2020, Dublin, Ireland, June 8-11, 2020.
2019
doi
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Unsupervised Answer Retrieval with Data Fusion for Community Question Answering.
Sosuke Kato
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Toru Shimizu
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Sumio Fujita
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Tetsuya Sakai
Information Retrieval Technology - 15th Asia Information Retrieval Societies Conference, AIRS 2019, Hong Kong, November 7-9, 2019, Proceedings
doi
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Towards Automatic Evaluation of Reused Answers in Community Question Answering.
Hsin Wen Liu
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Sumio Fujita
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Tetsuya Sakai
Information Retrieval Technology - 15th Asia Information Retrieval Societies Conference, AIRS 2019, Hong Kong, November 7-9, 2019, Proceedings
doi
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Arc Loss: Softmax with Additive Angular Margin for Answer Retrieval.
Rikiya Suzuki
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Sumio Fujita
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Tetsuya Sakai
Information Retrieval Technology - 15th Asia Information Retrieval Societies Conference, AIRS 2019, Hong Kong, November 7-9, 2019, Proceedings
doi
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Adapting Visual Question Answering Models for Enhancing Multimodal Community Q&A Platforms.
Avikalp Srivastava
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Hsin Wen Liu
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Sumio Fujita
Proceedings of the 28th ACM International Conference on Information and Knowledge Management, CIKM 2019, Beijing, China, November 3-7, 2019.
doi
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Final Report of the NTCIR-14 OpenLiveQ-2 Task.
Makoto P. Kato
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Akiomi Nishida
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Tomohiro Manabe
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Sumio Fujita
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Takehiro Yamamoto
NII Testbeds and Community for Information Access Research - 14th International Conference, NTCIR 2019, Tokyo, Japan, June 10-13, 2019, Revised Selected Papers
doi
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Online Evaluations of Features and Ranking Models for Question Retrieval.
Tomohiro Manabe
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Sumio Fujita
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Akiomi Nishida
NII Testbeds and Community for Information Access Research - 14th International Conference, NTCIR 2019, Tokyo, Japan, June 10-13, 2019, Revised Selected Papers
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Overview of the NTCIR-14 OpenLiveQ-2 Task.
Makoto P. Kato
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Akiomi Nishida
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Tomohiro Manabe
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Sumio Fujita
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Takehiro Yamamoto
Proceedings of the 14th NTCIR Conference on Evaluation of Information Access Technologies, NTCIR 2019, Tokyo, Japan, June 10-13, 2019
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YJRS at the NTCIR-14 OpenLiveQ-2 Task.
Tomohiro Manabe
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Sumio Fujita
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Akiomi Nishida
Proceedings of the 14th NTCIR Conference on Evaluation of Information Access Technologies, NTCIR 2019, Tokyo, Japan, June 10-13, 2019
2018
doi
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Challenges of Multileaved Comparison in Practice: Lessons from NTCIR-13 OpenLiveQ Task.
Makoto P. Kato
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Tomohiro Manabe
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Sumio Fujita
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Akiomi Nishida
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Takehiro Yamamoto
Proceedings of the 27th ACM International Conference on Information and Knowledge Management, CIKM 2018, Torino, Italy, October 22-26, 2018
doi
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Exploring People's Attitudes and Behaviors Toward Careful Information Seeking in Web Search.
Takehiro Yamamoto
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Yusuke Yamamoto
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Sumio Fujita
Proceedings of the 27th ACM International Conference on Information and Knowledge Management, CIKM 2018, Torino, Italy, October 22-26, 2018
doi
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Classifying Community QA Questions That Contain an Image.
Kenta Tamaki
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Riku Togashi
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Sosuke Kato
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Sumio Fujita
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Hideyuki Maeda
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Tetsuya Sakai
Proceedings of the 2018 ACM SIGIR International Conference on Theory of Information Retrieval, ICTIR 2018, Tianjin, China, September 14-17, 2018
2017
doi
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Mobile Vertical Ranking based on Preference Graphs.
Yuta Kadotami
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Yasuaki Yoshida
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Sumio Fujita
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Tetsuya Sakai
Proceedings of the ACM SIGIR International Conference on Theory of Information Retrieval, ICTIR 2017, Amsterdam, The Netherlands, October 1-4, 2017
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Overview of the NTCIR-13 OpenLiveQ Task.
Makoto P. Kato
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Takehiro Yamamoto
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Tomohiro Manabe
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Akiomi Nishida
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Sumio Fujita
The 13th NTCIR Conference, Evaluation of Information Access Technologies, National Center of Sciences, Tokyo, Japan, December 5-8, 2017
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YJRS at the NTCIR-13 OpenLiveQ Task.
Tomohiro Manabe
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Akiomi Nishida
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Sumio Fujita
The 13th NTCIR Conference, Evaluation of Information Access Technologies, National Center of Sciences, Tokyo, Japan, December 5-8, 2017
doi
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LSTM vs. BM25 for Open-domain QA: A Hands-on Comparison of Effectiveness and Efficiency.
Sosuke Kato
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Riku Togashi
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Hideyuki Maeda
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Sumio Fujita
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Tetsuya Sakai
Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Shinjuku, Tokyo, Japan, August 7-11, 2017
doi
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A Comparative Live Evaluation of Multileaving Methods on a Commercial cQA Search.
Tomohiro Manabe
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Akiomi Nishida
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Makoto P. Kato
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Takehiro Yamamoto
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Sumio Fujita
Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Shinjuku, Tokyo, Japan, August 7-11, 2017
doi
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Enhancing Knowledge Graph Embedding with Probabilistic Negative Sampling.
Vibhor Kanojia
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Hideyuki Maeda
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Riku Togashi
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Sumio Fujita
Proceedings of the 26th International Conference on World Wide Web Companion, Perth, Australia, April 3-7, 2017
doi
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Euclidean Image Embedding in view of Similarity Ranking in Auction Search by Image.
Riku Togashi
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Hideyuki Maeda
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Vibhor Kanojia
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Kousuke Morimoto
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Sumio Fujita
Proceedings of the 26th International Conference on World Wide Web Companion, Perth, Australia, April 3-7, 2017
2016
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Overview of the NTCIR-12 MobileClick-2 Task.
Makoto P. Kato
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Tetsuya Sakai
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Takehiro Yamamoto
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Virgil Pavlu
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Hajime Morita
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Sumio Fujita
Proceedings of the 12th NTCIR Conference on Evaluation of Information Access Technologies, National Center of Sciences, Tokyo, Japan, June 7-10, 2016
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YJST at the NTCIR-12 MobileClick-2 Task.
Yuya Ozawa
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Taichi Yatsuka
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Sumio Fujita
Proceedings of the 12th NTCIR Conference on Evaluation of Information Access Technologies, National Center of Sciences, Tokyo, Japan, June 7-10, 2016
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Overview of the NTCIR-12 IMine-2 Task.
Takehiro Yamamoto
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Yiqun Liu
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Min Zhang
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Zhicheng Dou
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Ke Zhou
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Ilya Markov
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Makoto P. Kato
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Hiroaki Ohshima
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Sumio Fujita
Proceedings of the 12th NTCIR Conference on Evaluation of Information Access Technologies, National Center of Sciences, Tokyo, Japan, June 7-10, 2016
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YJST at the NTCIR-12 IMine-2 Task.
Yasuaki Yoshida
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Hideyuki Maeda
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Tatsuhiro Niwa
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Sumio Fujita
Proceedings of the 12th NTCIR Conference on Evaluation of Information Access Technologies, National Center of Sciences, Tokyo, Japan, June 7-10, 2016
doi
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Extracting Search Query Patterns via the Pairwise Coupled Topic Model.
Takuya Konishi
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Takuya Ohwa
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Sumio Fujita
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Kazushi Ikeda
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Kohei Hayashi
Proceedings of the Ninth ACM International Conference on Web Search and Data Mining, San Francisco, CA, USA, February 22-25, 2016
2012
doi
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Semantics of query rewriting patterns in search logs.
Sumio Fujita
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Georges Dupret
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Ricardo Baeza-Yates
Proceedings of the Fifth workshop on Exploiting Semantic Annotations in Information Retrieval, ESAIR 2012, Maui, HI, USA, October 28, 2012
2010
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Click-graph modeling for facet attribute estimation of web search queries.
Sumio Fujita
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Keigo Machinaga
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Georges Dupret
Recherche d'Information Assistée par Ordinateur, RIAO 2010: Adaptivity, Personalization and Fusion of Heterogeneous Information, 9th International Conference, Bibliotheque Nationale de France, Paris, France, April 28-30, 2010, Proceedings
doi
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Using Related Queries to Improve Web Search Results Ranking.
Georges Dupret
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Ricardo Zilleruelo-Ramos
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Sumio Fujita
String Processing and Information Retrieval - 17th International Symposium, SPIRE 2010, Los Cabos, Mexico, October 11-13, 2010. Proceedings
2009
doi
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Retrieval parameter optimization using genetic algorithms.
Sumio Fujita
Information Processing and Management 2009 Volume 45 Issue 6
2007
doi
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Technology survey and invalidity search: A comparative study of different tasks for Japanese patent document retrieval.
Sumio Fujita
Information Processing and Management 2007 Volume 43 Issue 5
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NTCIR-6 CLIR-J-J Experiments at Yahoo! Japan.
Sumio Fujita
Proceedings of the 6th NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-6, National Center of Sciences, Tokyo, Japan, May 15-18, 2007
2005
doi
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NTCIR-2 as a Rosetta stone in laboratory experiments of IR systems.
Sumio Fujita
Information Processing and Management 2005 Volume 41 Issue 3
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A Decade after TREC-4 - NTCIR-5 CLIR-J-J Experiments at Yahoo!Japan.
Sumio Fujita
Proceedings of the Fifth NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-5, National Center of Sciences, Tokyo, Japan, December 6-9, 2005
2004
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Revisiting Document Length Hypotheses: NTCIR-4 CLIR and Patent Experiments at Patolis.
Sumio Fujita
Proceedings of the Fourth NTCIR Workshop on Research in Information Access Technologies Information Retrieval, Question Answering and Summarization, NTCIR-4, National Center of Sciences, Tokyo, Japan, June 2-4, 2004
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Revisiting Again Document Length Hypotheses TREC 2004 Genomics Track Experiments at Patolis.
Sumio Fujita
Proceedings of the Thirteenth Text REtrieval Conference, TREC 2004, Gaithersburg, Maryland, USA, November 16-19, 2004
2001
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Notes on the Limits of CLIR Effectiveness: NTCIR-2 Evaluation Experiments at Justsystem.
Sumio Fujita
Proceedings of the Third Second Workshop Meeting on Evaluation of Chinese & Japanese Text Retrieval and Text Summarization, NTCIR-2, Tokyo, Japan, March 7-9, 2001
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More Reflections on "Aboutness" TREC-2001 Evaluation Experiments at Justsystem.
Sumio Fujita
Proceedings of The Tenth Text REtrieval Conference, TREC 2001, Gaithersburg, Maryland, USA, November 13-16, 2001
2000
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Evaluation of Japanese Phrasal Indexing with Large Test Collection.
Sumio Fujita
Computer-Assisted Information Retrieval (Recherche d'Information et ses Applications) - RIAO 2000, 6th International Conference, College de France, France, April 12-14, 2000. Proceedings
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Reflections on "Aboutness" TREC-9 Evaluation Experiments at Justsystem.
Sumio Fujita
Proceedings of The Ninth Text REtrieval Conference, TREC 2000, Gaithersburg, Maryland, USA, November 13-16, 2000
1999
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Notes on Phrasal Indexing: JSCB Evaluation Experiments at NTCIR AD HOC.
Sumio Fujita
Proceedings of the First NTCIR Workshop on Research in Japanese Text Retrieval and Term Recognition, NTCIR-1, Tokyo, Japan, August 30 - September 1, 1999