Graduate School of Social Data Science
KEYAKI Atsushi

Papers

1. Coarse-Tuning for Ad-hoc Document Retrieval Using Pre-trained Language Models (Peer-reviewed)
Atsushi Keyaki, Ribeka Keyaki
The 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024) 2024.5
2. 都市別のソーシャルメディア投稿を利用した市民の性格特性分析
岩﨑 大晟, 関 洋平, 柏野 和佳子, 欅 惇志, 神門 典子
第16回データ工学と情報マネジメントに関するフォーラム (DEIM2024) 2024.2
3. Stance Prediction with a Relevance Attribute to Political Issues in Comparing the Opinions of Citizens and City Councilors (Peer-reviewed)
Ko Senoo, Yohei Seki, Wakako Kashino, Atsushi Keyaki, Noriko Kando
International Journal on Digital Libraries (IJDL) 2024.2
doi
4. Overview of the NTCIR-17 Transfer Task
Hideo Joho, Atsushi Keyaki, Yuki Oba
The 17th NTCIR Conference (NTCIT-17) 2023.12
5. 大規模言語モデルを用いた情報検索のための coarse-tuning 手法の提案
欅 惇志, 田中リベカ
言語処理学会第29回年次大会 (NLP2023) 2023
6. ツイートを利用した地域別の市民同士のつながりを評価する指標の提案
米丸 周吾, 関 洋平, 欅 惇志, 柏野 和佳子, 神門 典子
第15回データ工学と情報マネジメントに関するフォーラム (DEIM2023) 2023
7. 都市を横断した市民意見抽出の評価 (Peer-reviewed)
石田哲也, 関洋平, 欅 惇志, 柏野和佳子, 神門典子
自然言語処理 Vol.30,No.2 2023
8. 都市を横断した市民意見抽出に関する課題と手法についての検証
石田 哲也, 関 洋平, 欅 惇志, 柏野 和佳子, 神門 典子
WebDB Workshop 2022 2022
9. 単語分割と後段モデルの損失値を用いた同時最適化 (Peer-reviewed)
平岡 達也, 高瀬 翔, 内海 慶, 欅 惇志, 岡崎 直観
自然言語処理 Vol.29,No.1 2022
10. Word-level Perturbation Considering Word Length and Compositional Subwords (Peer-reviewed)
Tatsuya Hiraoka, Sho Takase, Kei Uchiumi, Atsushi Keyaki, Naoaki Okazaki
In Findings of the Association for Computational Linguistics: ACL 2022 2022
11. テキストベクトルの重みづけを用いたタスクに対する単語分割の最適化 (Peer-reviewed)
平岡 達也, 高瀬 翔, 内海 慶, 欅 惇志, 岡崎 直観
自然言語処理 Vol.28,No.2 2021
12. Recurrent Neural Hidden Markov Model for High-Order Transition (Peer-reviewed)
Tatsuya Hiraoka, Sho Takase, Kei Uchiumi, Atsushi Keyaki, Naoaki Okazaki
ACM Transactions on Asian and Low-Resource Language Information Processing (TALLIP) 2021
13. Joint Optimization of Tokenization and Downstream Model (Peer-reviewed)
Tatsuya Hiraoka, Sho Takase, Kei Uchiumi, Atsushi Keyaki, Naoaki Okazaki
In Findings of the Association for Computational Linguistics: ACL 2021 2021
14. Optimizing Word Segmentation for Downstream Task (Peer-reviewed)
Tatsuya Hiraoka, Sho Takase, Kei Uchiumi, Atsushi Keyaki, Naoaki Okazaki
In Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing: Findings 2020
15. Understanding Natural Language Parking Instructions and Grounding for Self-driving Cars (Peer-reviewed)
Nana Otawara, Hiroshi Tsukahara, Atsushi Keyaki, Ichiro kobayashi
Machine Learning for Autonomous Driving in NeurIPS 2019 Workshop (ML4AD) 2019
16. Accurate Aggregation Query-Result Estimation and Its Efficient Processing on Distributed Key-Value Store. (Peer-reviewed)
Kosuke Yuki, Atsushi Keyaki, Jun Miyazaki, Masahide Nakamura
Big Data Analytics and Knowledge Discovery - 21st International Conference(DaWaK) pp.310-320 2019
doi Link Link
17. Efficient Aggregation Query Processing for Large-scale Multidimensional Data by Combining RDB and KVS (Peer-reviewed)
Yuya Watari, Atsushi Keyaki, Jun Miyazaki, Masahide Nakamura
Proc. of 29th International Conference on Database and Expert Systems Applications (DEXA 2018), LNCS 11029 pp.pp. 134-149 2018.9
doi Link
18. Analysis of Relevant Text Fragments for Different Search Task Types (Peer-reviewed)
Atsushi Keyaki, Jun Miyazaki
Information Retrieval Technology - 14th Asia Information Retrieval Societies Conference(AIRS) pp.60-66 2018
doi Link Link
19. GPU上のMapReduceを利用した大規模データ処理の最適化 (Peer-reviewed)
柳本 晟熙, 欅 惇志, 宮崎 純
情報処理学会論文誌：データベース Vol.11,No.3 2018
20. A Contextual Random Walk Model for Automated Playlist Generation. (Peer-reviewed)
Seiji Ueda, Atsushi Keyaki, Jun Miyazaki
2018 IEEE/WIC/ACM International Conference on Web Intelligence(WI) pp.367-374 2018
doi Link Link
21. Effective Mobile Search using Element-based Retrieval (Peer-reviewed)
Atsushi Keyaki, Jun Miyazaki, Kenji Hatano
IPSJ Transactions on Databases, TOD Vol.Vol. 10,No.No. 3,pp.pp. 1-11 2017.10
Link
22. Part-of-speech tagging for web search queries using a large-scale web corpus (Peer-reviewed)
Atsushi Keyaki, Jun Miyazaki
Proceedings of the ACM Symposium on Applied Computing Vol.128005,pp.931-937 2017.4
doi Link
23. 部分文書検索を用いた高精度なモバイル情報検索
欅 惇志, 宮崎 純, 波多野 賢治
DEIM2017論文集 2017.3
Link
24. A case for term weighting using a dictionary on GPUs (Peer-reviewed)
Toshiaki Wakatsuki, Atsushi Keyaki, Jun Miyazaki
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) Vol.10439,pp.103-117 2017
doi Link
25. Skyline-based recommendation considering user preferences (Peer-reviewed)
Shuhei Kishida, Seiji Ueda, Atsushi Keyaki, Jun Miyazaki
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) Vol.10367,pp.133-141 2017
doi Link
26. A new readability measure for web documents and its evaluation on an effective web search engine (Peer-reviewed)
Yume Sasaki, Takuya Komatsuda, Atsushi Keyaki, Jun Miyazaki
ACM International Conference Proceeding Series pp.355-362 2016.11
doi Link
27. NEXTI at NTCIR-12 IMine-2 Task
Hidetsugu Nanba, Tetsuya Sakai, Noriko Kando, Atsushi Keyaki, Koji Eguchi, Kenji Hatano, Toshiyuki Shimizu, Yu Hirate, Atsushi Fujii
Proceedings of the 12th NTCIR Conference on Evaluati on of Information Access Technologies, June 7-10, 2016 Tokyo Japan (ISBN 978-4-86049-071-3 Vol.12,pp.27-30 2016.6
Link
28. Element-based Retrieval@MobileClick-2
Atsushi Keyaki, Jun Miyazaki, Kenji Hatano
Proceedings of the 12th NTCIR Conference on Evaluation of Information Access Technologies(NTCIR) 2016.6
Link
29. A Score Fusion Method Using a Mixture Copula (Peer-reviewed)
Takuya Komatsuda, Atsushi Keyaki, Jun Miyazaki
DATABASE AND EXPERT SYSTEMS APPLICATIONS, DEXA 2016, PT II Vol.9828,pp.216-232 2016
doi Link
30. Applying XML Element Retrieval Techniques to Web Documents (Peer-reviewed)
Atsushi Keyaki, Jun Miyazaki, Kenji Hatano
DBSJ Journal Vol.13,No.1,pp.64-70 2015.3
doi Link
31. An Expansion Method of XML Element Retrieval Techniques into Web Documents (Peer-reviewed)
Atsushi Keyaki, Jun Miyazaki, Kenji Hatano
Proceedings of 2014 3rd IIAI International Conference on Advanced Applied Infomatics (IIAI-AAI 2014) pp.203-208 2014.9
doi
32. More Fine-grained Web Search with Element-based Retrieval
Atsushi Keyaki, Jun Miyazaki, Kenji Hatano
The 6th International Workshop with Mentors on Databases, Web, and Information Management for Young Researchers (iDB Workshop 2014) 2014.7
Link
33. 語義グラフを用いた整数線形計画法による語義曖昧性解消手法の提案 (Peer-reviewed)
欅 惇志, 荒瀬 由紀, 山本 風人, 辻井 潤一
第 7 回 Web とデータベースに関するフォーラム (WebDB Forum 2014) 2014
34. Path Expression-based Smoothing of Query Likelihood Model for XML Element Retrieval (Peer-reviewed)
Atsushi Keyaki, Jun Miyazaki, Kenji Hatano, Goshiro Yamamoto, Takafumi Taketomi, Hirokazu Kato
Proceedings of 2013 Second IIAI International Conference on Advanced Applied Informatics (IIAI-AAI 2013) pp.296-300 2013.9
doi
35. Update-Aware Accurate XML Element Retrieval
Atsushi Keyaki, Jun Miyazaki, Kenji Hatano
The 5th International Workshop with Mentors on Databases, Web, and Information Management for Young Researchers (iDB Workshop 2013) 2013.7
Link
36. Fast Incremental Indexing with Effective and Efficient Searching in XML Element Retrieval (Peer-reviewed)
Atsushi Keyaki, Jun Miyazaki, Kenji Hatano, Goshiro Yamamoto, Takafumi Taketomi, Hirokazu Kato
International Journal of Web Information Systems (IJWIS) Vol.9,No.2,pp.142-164 2013.6
doi
37. XML Element Retrieval@1CLICK-2
Atsushi Keyaki, Jun Miyazaki, Kenji Hatano, Goshiro Yamamoto, Takafumi Taketomi, Hirokazu Kato
Proceedings of The 10th NTCIR Conference pp.237-242 2013.6
38. 文書の更新を考慮した高精度 XML 部分文書検索手法の提案 (Peer-reviewed)
欅 惇志, 宮崎 純, 波多野 賢治, 山本 豪志朗, 武富 貴史, 加藤 博一
情報処理学会論文誌：データベース Vol.6,No.4 2013
39. Fast and Incremental Indexing in Effective and Efficient XML Element Retrieval Systems (Peer-reviewed)
Atsushi Keyaki, Jun Miyazaki, Kenji Hatano, Goshiro Yamamoto, Takafumi Taketomi, Hirokazu Kato
Proceedings of the 14th International Conference on Information Integration and Web-based Applications & Services (iiWAS 2012) pp.157-166 2012.12
doi
40. XML 部分文書検索における索引の高速な差分更新と高精度検索 (Peer-reviewed)
欅 惇志, 宮崎 純, 波多野 賢治, 山本 豪志朗, 武富 貴史, 加藤 博一
第 5 回 Web とデータベースに関するフォーラム (WebDB Forum 2012) 2012
41. Result-reconstruction Method to Return Useful XML Elements (Peer-reviewed)
Atsushi Keyaki, Kenji Hatano, Jun Miyazaki
International Journal of Web Information Systems Vol.7,No.4,pp.360-380 2011.12
doi
42. XML 情報検索のための 動的な索引管理手法の一提案 (Peer-reviewed)
欅 惇志, 宮崎 純, 波多野 賢治, 山本 豪志朗, 加藤 博一
情報処理学会研究報告 Vol.2011-DBS-153,No.32,pp.1-8 2011.11
43. Relaxed Global Term Weights for XML Element Search (Peer-reviewed)
Atsushi Keyaki, Kenji Hatano, Jun Miyazaki
Comparative Evaluation of Focused Retrieval Vol.6932 of LNCS,pp.71-81 2011.8
doi
44. XML部分文書検索における緩和大域的重み付け手法の提案
欅惇志, 波多野賢治, 宮崎純
2011.2
Link
45. 有益な検索結果提示のための部分文書再構成手法の提案 (Peer-reviewed)
欅惇志, 波多野賢治, 宮崎純
情報処理学会論文誌データベース Vol.Vol. 4,No.No. 1,pp.pp. 1-13 2011
Link
46. A Result Reconstruction Method for Effective XML Fragment Search at INEX 2010
Atsushi Keyaki, Kenji Hatano, Jun Miyazaki
INEX 2010 Workshop Pre-proceedings pp.65-76 2010.12
47. Result Reconstruction Approach for More Effective XML Fragment Search (Peer-reviewed)
Atsushi Keyaki, Kenji Hatano, Jun Miyazaki
Proceedings of the 12th International Conference on Information Integration and Web-based Applications & Services (iiWAS2010) pp.115-123 2010.11
doi
48. 再構成された XML 部分文書に対するランキング手法の提案 (Peer-reviewed)
欅惇志, 波多野賢治, 宮崎純
電子情報通信学会技術研究報告 pp.pp. 35-40 2010.9
Link
49. A Query-oriented XML Fragment Search Approach on A Relational Database System (Peer-reviewed)
Atsushi Keyaki, Kenji Hatano, Jun Miyazaki
Journal of Digital Information Management (JDIM) Vol.8,No.3,pp.175-180 2010.6
50. XML検索技術を利用した検索結果の構成手法
欅惇志, 波多野賢治, 宮崎純
情報処理学会第72回全国大会講演論文集 (第五分冊) pp.pp. 121-122 2010.3
Link
51. XML部分文書の再構成に基づく検索結果の提示手法
欅惇志, 波多野賢治, 宮崎純
2010.2
Link
52. A Method of Generating Answer XML Fragment from Ranked Results
Atsushi Keyaki, Jun Miyazaki, Kenji Hatano
INEX 2009 Workshop Pre-proceedings pp.67-74 2009.12
53. A Scoring Method of XML Fragments Considering Query-Oriented Statistics (Peer-reviewed)
Atsushi Keyaki, Kenji Hatano, Jun Miyazaki
Proceedings of the Second International Conference on the Applications of Digital Information and Web Technologies (ICADIWT 2009) pp.473-478 2009.8
doi
54. 索引語の統計量を用いた XML 部分文書検索法の組合せ利用とその効果
欅 惇志, 波多野 賢治, 宮崎 純
情報処理学会研究報告 pp.pp. 1-8 2009.7
Link
55. 構造化文書の重要部分抽出のためのスコアリングアルゴリズム
欅惇志, 波多野賢治, 宮崎純
第1回データ工学と情報マネジメントに関するフォーラム(DEIM2009)論文集, March 2009.3
Link
56. A Novel XML Fragment Retrieval Method based on Statistical Analyses
Kenji Hatano, Jun Miyazaki, Atsushi Keyaki
INEX 2008 Workshop Pre-proceedings pp.100-108 2008.12

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Presentations

No. Name of subject/Conference Name Year Site
1. AI・データサイエンスの最新動向と産学における現状(第231回 知的財産マネジメント研究会)
 Holding date :
Presentation date : 2022
2. 機械学習初心者のためのハンズオンセミナー(筑波大学 人間中心情報検索・推薦システムリサーチユニット (HCIR) セミナー)
 Holding date :
Presentation date : 2021
3. 知りたい✕コンピュータ 〜情報検索技術がもたらす未来〜(平成30年度 第6回「文部科学省 情報ひろばサイエンスカフェ」)
 Holding date :
Presentation date : 2019
4. ICDE2016国際会議報告(第25回先端的データベースとWeb技術動向講演会(ACM SIGMOD 日本支部第62回支部大会))
 Holding date :
Presentation date : 2016
5. XML element retrieval: information retrieval leveraging document structure(CS Seminar, School of Computing, National University of Singapore)
 Holding date :
Presentation date : 2016
6. XML 情報検索技術と Web 検索への適用(筑波大学 知的コミュニティ基盤研究センター 研究談話会)
 Holding date :
Presentation date :
7. SIGIR2017参加 (開催) 報告 ～ 会議概要とニューラルネットな情報検索 ～(第11回テキストアナリティクス・シンポジウム)
 Holding date :
Presentation date :

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Awards

No. Award name Year
1. 2021年度 最優秀論文賞 2022
2. 2018年度学会活動貢献賞受賞 2019
3. 優秀論文賞受賞 2017
4. 優秀論文賞受賞 2014
5. 最優秀論文賞 2013
6. 学生プレゼンテーション賞受賞 2013
7. 学生奨励賞受賞 2012
8. 学生奨励賞受賞 2009

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Research Projects

No. Research subject Research item(Awarding organization, System name) Year
1. Automatic Estimation of Connections among Citizens Using Urban Tweet Data and its Social Application
Grant-in-Aid for Scientific Research (B)
( Awarding organization: Japan Society for the Promotion of Science System name: Grants-in-Aid for Scientific Research ) 		2023.4 - 2027.3
2. Large-scale general-purpose language models for information retrieval tasks
Grant-in-Aid for Research Activity Start-up
( Awarding organization: Japan Society for the Promotion of Science System name: Grants-in-Aid for Scientific Research Grant-in-Aid for Research Activity Start-up ) 		2022.8 - 2024.3
3. Accelerating Task-Oriented Information Retrieval Systems
Grant-in-Aid for Young Scientists (B)
( Awarding organization: Japan Society for the Promotion of Science System name: Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B) ) 		2017.4 - 2019.3
4. セマンティック情報を用いた情報検索システム
Link
( System name: 戦略的な研究開発の推進 戦略的創造研究推進事業 ACT-I ) 		2017 - 2018
5. クエリ分析による正確なタスク分類手法の提案

( Awarding organization: 東京工業大学 System name: 情報理工学院若手研究プロジェクト支援 ) 		2016 - 2017
6. High Precision Information Retrieval and Recommendation based on Copulas
Link 		Grant-in-Aid for Scientific Research (B)
( Awarding organization: Japan Society for the Promotion of Science System name: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B) ) 		2015.4 - 2018.3
7. Estimation of user's intent and presentation method of search results based on the intent
Link 		Grant-in-Aid for Young Scientists (B)
( Awarding organization: Japan Society for the Promotion of Science System name: Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B) ) 		2015.4 - 2018.3
8. 大規模コーパスの統計量を利用した正確なクエリ語の品詞推定手法の提案

( Awarding organization: 東京工業大学 System name: 東京工業大学基金による研究助成 ) 		2015 - 2016
9. A Study on A Data Access Service for Applications utilizing Big Data Analytics
Grant-in-Aid for Scientific Research (B)
( Awarding organization: Japan Society for the Promotion of Science System name: Grants-in-Aid for Scientific Research ) 		2014.4 - 2018.3
10. Research on basic technologies for sharing the information in a disaster recovery
Link 		Grant-in-Aid for Scientific Research (A)
( Awarding organization: Japan Society for the Promotion of Science System name: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A) ) 		2013.10 - 2017.3
11. Research on Accurate and Fast XML Retrieval
Grant-in-Aid for JSPS Fellows
( Awarding organization: Japan Society for the Promotion of Science System name: Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows ) 		2012 - 2013

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