People
Sumio Fujita Yahoo! JAPAN Research Senior Chief Researcher
Have engaged in the research and development in effective information retrieval technologies for Japanese documents, including participations in NTCIRs and TRECs, especially participated in an early epoch of TREC Web tracks and occupied the position of the best performing systems in 2000. Carried out experiments in distributed retrieval, cross language retrieval, named page finding, patent document retrieval and medical document retrieval. Have joined Yahoo Japan Corporation in 2005, and worked on automatic query spell correction, vertical search technologies, automatic classification of e-commerce items and real time clustering tools for service inquiry mails. Meantime, have continued basic research such as document length normalization, pseudo relevance feedback, clustering hypothesis issues, and so on. Participated in the foundation of Yahoo! JAPAN Research in 2007, and works on mining from search user logs and its application to search related services.
Publications
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- CONFERENCE (INTERNATIONAL)
- TKB48 at TREC 2021 Conversational Assistance Track
- Yubo Fang (University of Tsukuba), Hideo Joho (University of Tsukuba), Sumio Fujita
- TEXT RETRIEVAL CONFERENCE 2021
- November 15, 2021
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- CONFERENCE (INTERNATIONAL)
- TKB48 at TREC 2021 Fairness Ranking Track
- Zhuoqi Jin (University of Tsukuba), Hideo Joho (University of Tsukuba), Sumio Fujita
- TEXT RETRIEVAL CONFERENCE 2021
- November 15, 2021
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- CONFERENCE (INTERNATIONAL)
- TKB48 at TREC 2021 News Track
- Lirong Zhang (University of Tsukuba), Hideo Joho (University of Tsukuba), Sumio Fujita
- TEXT RETRIEVAL CONFERENCE 2021
- November 15, 2021
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- CONFERENCE (DOMESTIC)
- がん検診に関するW E B検索動向とがん検診受診率,年齢調整罹患率,年齢調整死亡率の関連について
- 平和也 (京大), 細川陸也 (京大), 藤田澄男, 塩見美抄 (京大)
- 第13回日本ヘルスコミュニケーション学会学術集会
- September 29, 2021
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- CONFERENCE (INTERNATIONAL)
- LGTM: A Fast and Accurate kNN Search Algorithm in High-dimensional Spaces
- Yusuke Arai (Osaka univ.), Daichi Amagata (Osaka univ.), Sumio Fujita, Takahiro Hara (Osaka univ.)
- The 32nd International Conference on Database and Expert Systems Applications
- September 28, 2021
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- JOURNAL (INTERNATIONAL)
- Measuring Public Concern About COVID-19 Through Search Queries: An Infodemiology Study
- Zhiwei Gao (NAIST), Sumio Fujita, Nobuyuki Shimizu, Kongmeng Liew (NAIST), Taichi Murayama (NAIST), Shuntaro Yada (NAIST), Shoko Wakamiya (NAIST), Eiji Aramaki (NAIST)
- JMIR Public Health and Surveillance
- July 20, 2021
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- CONFERENCE (INTERNATIONAL)
- BanditRank: Learning to Rank Using Contextual Bandits
- Phanideep Gampa (IIT Varanasi), Sumio Fujita
- the 25th Pacific-Asia Conference on Knowledge Discovery and Data Mining
- May 11, 2021
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- JOURNAL (INTERNATIONAL)
- Predicting Regional Influenza Epidemics with Uncertainty Estimation using Commuting Data in Japan
- Taichi Murayama (NAIST), Nobuyuki Shimizu, Sumio Fujita, Shoko Wakamiya (NAIST), Eiji Aramaki (NAIST)
- PLOS ONE
- April 22, 2021
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- JOURNAL (DOMESTIC)
- 高次元データに対するグラフインデックスを用いた近似範囲検索アルゴリズム
- 新井 悠介 (阪大), 天方 大地 (阪大), 原 隆浩 (阪大), 藤田 澄男
- 情報処理学会 論文誌ジャーナル
- April 15, 2021
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- OTHERS (INTERNATIONAL)
- Influenza Surveillance using Search Engine, SNS, On-line Shopping, Q&A Service and Past Flu Patients
- Taichi Murayama (NAIST), Nobuyuki Shimizu, Sumio Fujita, Shoko Wakamiya (NAIST), Eiji Aramaki (NAIST)
- arXiv.org
- April 14, 2021
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- CONFERENCE (INTERNATIONAL)
- How Do Users Revise Zero-Hit Product Search Queries?
- Yuki Amemiya (Waseda University), Tomohiro Manabe, Sumio Fujita, Tetsuya Sakai (Waseda University)
- The 43rd edition of the annual BCS-IRSG European Conference on Information Retrieval
- March 29, 2021
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- CONFERENCE (DOMESTIC)
- Learning to Rank を用いたキーワードや具体例を入力とする映画の検索
- 栗原 光祐 (青学大), 莊司 慶行 (青学大), 藤田 澄男, Martin J. D ̈urst (青学大)
- 第13回データ工学と情報マネジメントに関するフォーラム
- March 01, 2021
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- CONFERENCE (DOMESTIC)
- Public Concern About COVID-19 Through Search Queries
- Zhiwei GAO (NAIST), Kongmeng LIEW (NAIST), Taichi MURAYAMA (NAIST), Shuntaro YADA (NAIST), Shoko WAKAMIYA (NAIST), Eiji ARAMAKI (NAIST), Nobuyuki SHIMIZU, Sumio FUJITA
- 第13回データ工学と情報マネジメントに関するフォーラム
- March 01, 2021
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- CONFERENCE (DOMESTIC)
- オンラインショッピングにおける購買意図の推移とウェブ検索クエリの分析
- 中田 祐誠 (兵庫県立大), 山本 岳洋 (兵庫県立大), 藤田 澄男, 大島 裕明 (兵庫県立大)
- 第13回データ工学と情報マネジメントに関するフォーラム
- March 01, 2021
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- CONFERENCE (DOMESTIC)
- ユーザが共感できる悩みの対話コンテンツ生成
- 橋口 友哉 (兵庫県立大), 山本 岳洋 (兵庫県立大), 藤田 澄男, 大島 裕明 (兵庫県立大)
- 第13回データ工学と情報マネジメントに関するフォーラム
- March 01, 2021
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- CONFERENCE (DOMESTIC)
- 位置情報プライバシを考慮した集約データの価値算出
- 平石 亮太 (京大), 吉川 正俊 (京大), 曹 洋 (京大), 藤田 澄男, 五味 秀仁
- 第13回データ工学と情報マネジメントに関するフォーラム
- March 01, 2021
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- JOURNAL (DOMESTIC)
- CQAコンテンツからの状況が類似する悩みの検索
- 橋口 友哉 (兵庫県立大), 山本 岳洋 (兵庫県立大), 藤田 澄男, 大島 裕明 (兵庫県立大)
- 人工知能学会論文誌特集号「Webインテリジェンスとインタラクション」
- January 01, 2021
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- JOURNAL (DOMESTIC)
- ウェブ検索ログからのカメラのオンライン購買行動予測
- 中田 祐誠 (兵庫県立大), 村本 直樹 (兵庫県立大), 山本 岳洋 (兵庫県立大), 藤田 澄男, 大島 裕明 (兵庫県立大)
- 人工知能学会論文誌特集号「Webインテリジェンスとインタラクション」
- January 01, 2021
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- CONFERENCE (INTERNATIONAL)
- Cross-Domain Rating Prediction for Market Development
- Yuki Otsuka (Kyoto univ.), Makoto P. Kato (Univ. Tsukuba), Sumio Fujita, Masatoshi Yoshikawa (Kyoto Univ.)
- The 2020 IEEE/WIC/ACM International Joint Conference on Web Intelligence and Intelligent Agent Technology
- December 14, 2020
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- CONFERENCE (INTERNATIONAL)
- Augmentation of Local Government FAQs using Community-based Question-answering Data
- Yohei Seki (Tsukuba Univ.), Masaki Oguni (Tsukuba Univ.), Sumio Fujita
- The 22nd International Conference on Information Integration and Web-based Applications & Services
- November 30, 2020