Introduction of researcher:Yohei Seki

Communication Understanding, Sentiment Analysis, Corpus Analysis, Summarization, Multilingual Application, and Natural Language Generation

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DEIM 2023 Interaction Presentation Award

DEIM 2023 Sponser Award (LayerX Inc. Award)

Best paper and best student paper runner-up: The 24th International Conference on Asia-Pacific Digital Libraries (ICADL 2022)

Best Research Award, 18th SIG-WI2, 2022.

Student Incentive Award, WebDB 2022 Summer Workshop, 2022 (as a co-author)

Best Paper Award Runner-up: The 22nd International Conference on Asia-Pacific Digital Libraries (ICADL 2020)

Best Research Award, 16th SIG-WI2, 2020.

Award for Development of International Standard (for ISO/IEC 30145-3:2020 Information technology -- Smart City ICT reference framework -- Part 3: Smart city engineering framework)

Award for Development of International Standard (for ISO/IEC 30146: 2019 Information technology - Smart City ICT Indicators)

Student Incentive Award and Student Excellent Poster Presentation Award, 14th SIG-WI2, 2019 (as a co-author)

The 6th Stage Presentation Selected at SIG-WI2, 2018 (as a co-author)

Student Incentive Paper Award of the 79th IPSJ National Convention, 2017 (as a co-author)

DEIM 2017: Student Presentation Awards, 2017 (as a co-author)

Student Incentive Paper Award of the 78th IPSJ National Convention, 2016 (as a co-author)

The 4th Stage Presentation Selected at SIG-WI2, 2016 (as a co-author)

DEIM 2016: Interaction Presentation Awards, 2016 (as a co-author)

DEIM 2016: Student Presentation Awards, 2016 (as a co-author)

Best Paper Award at Workshop on Smart Technology for Cooking and Eating Activities (CEA 2014)

IPSJ IFAT Young Reseacher Excellent Award, 2014 (as a co-author)

IPSJ 157th SIGDBS Student Incentive Award, 2013 (as a co-author)

IPSJ Yamashita SIG Research Award, 2013.

WebDB 2012 Forum: Rakuten Awards, 2012 (as a co-author)

DEIM 2012: Interaction Presentation Awards, 2012 (as a co-author)

Best Paper Award of the 68th IPSJ National Convention, 2006 (as a co-author)

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Academic activities

• ISO/IEC JTC 1/WG11 Smart Cities International Expert, Domestic Member 2017-
• IEC/SyC Smart Cities Domestic Member 2016-
• Information Processsing Society of Japan (IPSJ), Transaction of Databases, Co-Chairs Editorial Board (Domestic), 2013-2014
• Information Processsing Society of Japan (IPSJ), Special Interest Group on Information Fundamentals and Access Technologies, Chair (Domestic) 2011-2012
• The Association for Natural Language Processing, Program Committee (Domestic), 2011-2012
• Information Processsing Society of Japan (IPSJ), Transaction of Databases, Editorial Board (Domestic), 2007-2010
• Information Processsing Society of Japan (IPSJ), Special Interest Group on Fundamental Informatics, Secretary (Domestic) 2009-2010
• NTCIR-7/8 Multilingual Opinion Analysis Task Co-Organizer, 2008-2010
• NTCIR-6 Opinion Analysis Pilot Task Co-Organizer, 2007
• NTCIR-12 Sponsor Chair, 2016
• NTCIR-9 Travel Support Chair, 2011
• NTCIR-6 Local Arrangements Chair, 2007
• Program Committee or Reviewer: ACL, ACM SIGIR, AIRS, EACL, EMNLP, IJCNLP, and so on.

Members

• Association for Computing Machinery (ACM)
• The Association for Computational Linguistics (ACL)
• Information Processing Society of Japan (IPSJ, Doemstic)
• The Association for Natural Language Processing (Domestic)
• The Institute of Electronics, Information and Communication Engineers (IEICE, Domestic)
• The Database Society of Japan (DBSJ, Domestic)
• The Japanese Society for Artificial Intelligence (JSAI, Domestic)

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1. Ko Senoo, Yohei Seki, Wakako Kashino, and Noriko Kando: Visualization of the Gap Between the Stances of Citizens and City Councilors on Political Issues, In Y.-H. Tseng, M. Katsurai, and H. N. Nguyen (eds), From Born-Physical to Born-Virtual: Augmenting Intelligence in Digital Libraries, Lecture Notes in Computer Science, vol 13636. Springer, 2022, pp.73-89.
2. Yihong Liu and Yohei Seki: Joint Model Using Character and Word Embeddings for Detecting Internet Slang Words. In Hao-Ren Ke, Chei Sian Lee and Kazunari Sugiyama (eds), Towards Open and Trustworthy Digital Societies, Lecture Notes in Computer Science, vol 13133. Springer, 2021, pp.18-33.
3. Yohei Seki, Kangkang Zhao, Masaki Oguni and Kazunari Sugiyama: A Framework for Classifying Temporal Relation with Question Encoder. In Emi Ishita, Natalie Lee San Pang, and Lihong Zhou (eds), Digital Libraries at Times of Massive Societal Transition, Lecture Notes in Computer Science, Vol. 12504, Springer, 2020, pp.20-32.
4. Yohei Seki: Opinion Analysis Corpora Across Languages. T. Sakai, D. W. Oard, N. Kando (eds), Evaluating Information Retrieval and Access Tasks, Springer, Chapter 6, 2020, pp.83-95.
5. Yohei Seki: Sentiment Analysis, Yuji Matsumoto and Manabu Okumura (eds) Corpus and Natural Language Processing, Asakura Publishing Co., Ltd., Chapter 8, 2017, pp.134-167.
6. Yohei Seki: Information Retrieval and Recommendation, Hiroshi Itsumura, Naoki Takubo, and Takashi Harada (eds), For Students in Library and Information Science, Sekaishishosha-Kyogakusha Co., Ltd., Chapter 18, 2017, pp.191-200.
7. Naoto Takeda and Yohei Seki: Twitter User Classification with Posting Locations. In Atsuyuki Morishima, Andreas Rauber and Chern Li Liew (eds), Digital Libraries: Knowledge, Information, and Data in an Open Access Society, Lecture Notes in Computer Science, Vol. 10075, Springer, 2016, pp.297-310.
8. Seddiqui Md. Hanif, Yohei Seki, and Masaki Aono: Automatic Alignment of Ontology Eliminating the Probable Misalignments. In Riichiro Mizoguchi, Zhongzhi Shi, Fausto Giunchiglia (eds), The Semantic Web - ASWC 2006, Lecture Notes in Computer Science, Vol. 4185 (2006), pp.212-218. ISBN: 978-3-540-38329-1 (Print) 978-3-540-38331-4 (Online)
9. Yohei Seki, Koji Eguchi, and Noriko Kando: Multi-Document Viewpoint Summarization Focused on Facts, Opinion and Knowledge. In Shanahan, J. G. , Qu,Y. and Wiebe, J. (eds), Computing Attitude and Affect in Text: Theory and Applications, The Information Retrieval Series, Vol.20, Springer, Dordrecht, The Netherlands (2005), pp.317-336. ISBN: 1-4020-4026-1
10. Yohei Seki, Koji Eguchi, and Noriko Kando: Compact Summarization for Mobile Phones. In Crestani, F. , Dunlop, M. and Mizzaro, S. (eds), Mobile and Ubiquitous Information Access, Lecture Notes in Computer Science, Vol.2954 (2004), Springer-Verlag, pp.172-186. ISBN: 3-540-21003-2

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1. Tetsuya Ishida, Yohei Seki, Atsushi Keyaki, Wakako Kashino, and Noriko Kando: Evaluation of Citizen Opinion Extraction Across Cities, Journal of Natural Language Processing, Vol. 30, No. 2, 2023.
2. Tetsuya Ishida, Yohei Seki, Wakako Kashino, and Noriko Kando: Extracting Citizen Feedback from Social Media by Appraisal Opinion Type Viewpoint, Journal of Natural Language Processing, Vol. 29, No. 2, 2022, pp.416-442.
3. Yohei Seki, Kangkang Zhao, Masaki Oguni, and Kazunari Sugiyama: CNN-based Framework for Classifying Temporal Relations with Question Encoder, International Journal on Digital Libraries, Springer, Vol.23, No.2, 2022, pp.167-177.
4. Yuki Ando and Yohei Seki: Visualization of Mood of Citizen Concerns for Regional Names Based on Distributed Representations Using Citizen Tweets, Journal of Japan Society for Fuzzy Theory and Intelligent Informatics, Vol.30, No.6 (2018), pp.804-814. (in Japanese)
5. Naoto Takeda, Yohei Seki, Mimpei Morishita, and Yoichi Inagaki: Topic Detection and Evaluation Useful for Life Event Experience, Information Processing Society of Japan (IPSJ) Transactions on Databases, Vol.11, No.2 (2018), pp.16-29. (in Japanese)
6. Yuu Sueyoshi and Yohei Seki: VOCALOID Creator Search Using Music Genre and Impression, Transactions of the Japanese Society for Artificial Intelligence, Vol. 32, No. 1 (2017), pp.WII-K_1-12. (in Japanese)
7. Takumi Tanaka and Yohei Seki: Searching for Twitter Users as Adviser Candidates for Foreign Sightseers in Japan, Tourism Informatics, Vol. 12, No. 1 (2016), pp.75-84. (in Japanese)
8. Yohei Seki: Research on Annotation of Sentiment Analysis in Community QA，Journal of Natural Language Processing, Vol. 21 No. 2 (2014), pp.271-299. (in Japanese)
9. Yohei Seki: Current Status and Issues on Sentiment Analysis Corpora, Information Processing Society of Japan (IPSJ) Transactions on Databases, Vol.6, No.4 (2013), pp.85-103. (in Japanese)
10. Yuki Doumae and Yohei Seki: Estimation of Twitter User's Life-area Using Area Related Terms Selected by Semi-supervised Topic Model, Information Processing Society of Japan (IPSJ) Transactions on Databases, Vol.7, No.3 (2014), pp.1-13. (in Japanese)
11. Saki Sakai and Yohei Seki: A Method for Supporting Readers' Communication Using Sensibility Tags, IEICE Transactions on Information and Systems，Vol. J97-D, No. 1 (2014), pp.173-176. (in Japanese)
12. Yuuka Emura and Yohei Seki: Facemark Recommendation based on Emotion, Communication, and Motion Type Estimation in Microblogs，Journal of Natural Language Processing, Vol. 19 No. 5 (2012), pp.401-418. (in Japanese).
13. Atsushi Otsuka, Yohei Seki, Noriko Kando, and Tetsuji Satoh: A Study on the Seasonally Context Extraction Method for Query Expansion using Community Question Answering Resources，DBSJ Journal, Vol.11, No.1 (2012), pp.1-6. (in Japanese)
14. Daisuke Ishikawa, Tetsuya Sakai, Yohei Seki, Kazuko Kuriyama, and Noriko Kando: Automatic Prediction of High-Quality Answers in Community QA，Journal of Japan Society of Information and Knowledge，Vol. 21, No. 3 (2011), pp.362-382. (in Japanese)
15. Atsushi Otsuka, Yohei Seki, Noriko Kando, and Tetsuji Satoh: Diversified-query Generating System Using Community QA Resources to Verbalize Latent Information Needs, Information Processing Society of Japan (IPSJ) Transactions on Databases，Vol. 4, No. 3 (2011), pp.1-11. (in Japanese)
16. Yohei Seki, Noriko Kando, and Masaki Aono: Multilingual Opinion Holder Identification Using Author and Authority Viewpoints, Information Processing & Management, Vol. 45, No. 2 (2009), pp.189-199, (Impact Factor in 2009:1.783).
17. Yohei Seki, Koji Eguchi, and Noriko Kando: Multi-Document Viewpoint Summarization Based on Users' Information Needs and its Evaluation. Information Processing Society of Japan (IPSJ) Transactions on Databases, Vol.46, No.SIG 8 (TOD26) (2005), pp.106-119. (in Japanese)
18. Yohei Seki and Ken'ichi Harada: Text Generation from XML-DB with Lexical Selection Based on Discourse Structure. Information Processing Society of Japan (IPSJ) Journal, Vol.43, No.8 (2002), pp.2748-2763. (in Japanese)
19. Noriyuki Sugiyama, Yohei Seki, Masaki Aono: A Method for Finding Related Pages by Users’ Tagging Behavior from Social Bookmarks, Journal of the Database Society of Japan (DBSJ), Vol.7, No.1 (2008), pp.239-244 (in Japanese).
20. Atsushi Tatsuma, Yohei Seki, Masaki Aono, and Ryutaro Ohbuchi: 3D Model Retrieval Based on Multi-Fourier Spectra Representation, IEICE Transactions on Information and Systems, Vol.J91-D No.1 (2008), pp.23-36 (in Japanese).
21. Masaki Aono, Yusuke Sekiguchi, Yoshifumi Yasuda, Naoya Suzuki, and Yohei Seki: Time Series Data Mining for Multimodal Bio-Signal Data. Int'l Journal of Computer Science and Network Security (IJCNS), Vol.6, Num.10, 2006.

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International Conferences

1. Yifan Xu and Yohei Seki: Handling Chinese OOV with a Combination of Radical-Based Sub-Words and Glyph Features, 2023 International Joint Conference on Neural Networks (IJCNN) .
2. Ko Senoo, Yohei Seki, Wakako Kashino, and Noriko Kando: Visualization of the Gap Between the Stances of Citizens and City Councilors on Political Issues, Proc. of the 24th International Conference on Asia-Pacific Digital Libraries (ICADL 2022). (Best paper and best student paper runner-up)
3. Yohei Seki and Yihong Liu: Multi-task Learning Model for Detecting Internet Slang Words with Two-Layer Annotation, Proc. of 2022 International Conference on Asian Language Processing (IALP 2022), pp.212-218.
4. Yihong Liu and Yohei Seki: Joint Model Using Character and Word Embeddings for Detecting Internet Slang Words, Proc. of the 23rd International Conference on Asia-Pacific Digital Libraries (ICADL 2021).
5. Yohei Seki, Masaki Oguni and Sumio Fujita: Augmentation of Local Government FAQs using Community-based Question-answering Data, Proc. of he 22nd International Conference on Information Integration and Web-based Applications & Services (iiWAS2020), pp.362-366.
6. Yohei Seki, Kangkang Zhao, Masaki Oguni and Kazunari Sugiyama: A Framework for Classifying Temporal Relation with Question Encoder, Proc. of the 22nd International Conference on Asia-Pacific Digital Libraries (ICADL 2020), pp.20-32. (Best Paper Award Runner-up)
7. Takeaki Shionome, Hirotaka Hashimoto, Jianwei Zhang, Yuhki Shiraishi, Daisuke Wakatsuki, Yohei Seki, and Atsuyuki Morishima: Complement of Incomplete Task Results for Real-time Crowdsourcing Interpretation, Proc. of the 21st Int'l Conf. on Asian Language Processing, Singapore, December, 2017.
8. Masaki Oguni, Yohei Seki, Risako Shimada and Yu Hirate: Method for Detecting Near-duplicate Recipe Creators Based on Cooking Instructions and Food Images, Proc. of 9th Workshop on Multimedia for Cooking and Eating Activities (CEA 2017), Melbourne, Australia, August, 2017, pp.49-54.
9. Naoto Takeda, Yohei Seki, Mimpei Morishita and Yoichi Inagaki: Evolution of Information Needs based on Life Event Experiences with Topic Transition, Proc. of the 40th Ann. Int'l. ACM SIGIR Conf. on Research and Development on Information Retrieval (SIGIR 2017), Tokyo, Japan, August, 2017, pp.1009-1012.
10. Naoto Takeda and Yohei Seki: Twitter User Classification with Posting Locations, Proc. of the 18th International Conference on Asia-Pacific Digital Libraries (ICADL 2016), Tsukuba, Japan, December, 2016. (also listed as published books)
11. Yohei Seki: Use of Twitter for Analysis of Public Sentiment for Improvement of Local Government Service. Proc. of the 2nd IEEE Int'l Conf. on Smart Computing (SMARTCOMP 2016) , St. Louis, MO, USA, May, 2016, pp.325-327.
12. Yohei Seki and Kouta Ono: Discriminating Practical Recipes Based on Content Characteristics in Popular Social Recipes. Proc. of the 2014 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp 2014) Adjunct, Seattle, WA, USA, September, 2014, pp.487-496. (Best Paper Award)
13. Yohei Seki and Kiyoto Miyajima: Finding Impressive Social Content Creators. Proc. of the 36th Ann. Int'l. ACM SIGIR Conf. on Research and Development on Information Retrieval (SIGIR 2013), Dublin, Ireland, July 2013, pp.1041-1044.
14. Atsushi Otsuka, Yohei Seki, Noriko Kando, and Tetsuji Satoh: QAque: Faceted Query Expansion Techniques for Exploratory Search using Community QA Resources, In Proceedings of Workshop on Community Question Answering on the Web (CQA2012), in conjunction with the 21st International World Wide Web Conference (WWW), 2012.
15. Masaharu Yoshioka, Noriko Kando, and Yohei Seki: Evaluation of Interactive Information Access System using Concept Map, In Proc. of the 4th Int'l Workshop on Evaluating Information Access (EVIA), 2011.
16. Tetsuya Sakai, Daisuke Ishikawa, Noriko Kando, Yohei Seki, Kazuko Kuriyama, and Chin-Yew Lin: Using Graded-Relevance Metrics for Evaluating Community QA Answer Selection, In Proceedings of The Fourth ACM Conference on Web Search and Data Mining (WSDM 2011), pp.187-196.
17. Yohei Seki: Opinion Holder Extraction from Author and Authority Viewpoints. [poster] Proc. of the 30th Ann. Int'l. ACM SIGIR Conf. on Research and Development on Information Retrieval (SIGIR 2007), Amsterdam, The Netherlands, July 2007, pp.841-842.
18. Yohei Seki: Flexible Credibility Estimation Based on Topic Types Using Five Metrics. [poster] Proc. of the First Workshop on Information Credibility on the Web (WICOW) in conjunction with the 21st Annual Conference of the Japanese Society for Artificial Intelligence (JSAI 2007), Miyazaki, Japan, June 2007, pp.65-72.
19. David K. Evans, Lun-Wei Ku, Yohei Seki, Hsin-Hsi Chen and Noriko Kando: Opinion Analysis across languages: An Overview of and Observations from the NTCIR6 Opinion Analysis Pilot Task. Proc. of the Third international Cross-Language Information Processing workshop (CLIP2007), Camogli (Genova), Italy, July 2007, pp.456-463.
20. Seddiqui Md. Hanif, Yohei Seki, and Masaki Aono: Automatic Alignment of Ontology Eliminating the Probable Misalignments. Proc. of the 1st Asian Semantic Web Conf. (ASWC 2006), Beijing, China, September 2006, pp.212-218. (also listed as published books)
21. Ryosuke Nagura, Yohei Seki, Noriko Kando, and Masaki Aono: A Method of Rating the Credibility of News Documents on the Web. [poster] Proc. of the 29th Ann. Int'l. ACM SIGIR Conf. on Research and Development on Information Retrieval (SIGIR 2006), Seattle, Washington, August 2006, pp.683-684.
22. Yohei Seki, Koji Eguchi, Noriko Kando, and Masaki Aono: Multi-Document Summarization Reflecting Information Needs on Subjectivity [Refereed]. Proc. of the Fifth NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access (Open Submission Session), NII, Japan, December 2005, pp.521-528.
23. Yohei Seki, Koji Eguchi, and Noriko Kando: Analysis of Multi-Document Viewpoint Summarization Using Multi-Dimensional Genres. [poster] AAAI Spring Symposium on Exploring Attitude and Affect in Text: Theories and Applications, Technical Report SS-04-07, AAAI Press, Menlo Park, CA, March 2004, pp.142-145. ISBN: 1-57735-219-x
24. Yohei Seki and Ken'ichi Harada: Machine Translation Based on NLG from XML-DB. Proc. of the 19th Int'l Conf. on Computational Linguistics (COLING 2002), Taipei, Taiwan, August 2002, pp.1283-1287.
25. Yohei Seki and Noriko Kando: Dynamic Document Generation Based on TF/IDF Weighting. Proc. of Mobile Personal Information Retrieval Workshop at the 25th Ann. Int'l ACM SIGIR Conf. on Research and Development in Information Retrieval (SIGIR 2002), Tampere, Finland, August 2002, pp.57-63.
26. Yohei Seki: Publishing Technology in Spoken Languages from XML Database. [poster] Late-Breaking topics session at the First Int'l Semantic Web Conf. (ISWC 2002), Sardinia, Italia, June 2002.
27. Yohei Seki and Ken'ichi Harada: Summarization-Based Japanese Question and Answering System for Newspaper Articles. Proc. of the Third Int'l Conf. on Language Resources and Evaluation (LREC2002) Question Answering Strategy and Resources Workshop, Las Palmas, Spain, May 2002, pp.45-49.

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Invited Talks

1. Yohei Seki: Facilitating Citizens' Voices on Social Media to Address Regional Issues. Tenth International Workshop on Natural Language Processing for Social Media (SocialNLP 2022), Seattle, USA, 2022.
2. Yohei Seki: Artificial Intelligence, Natural Language Processing, and Law, Daini Tokyo Bar Association IT workshop, January 2018.
3. Yohei Seki: Knowledge Acquisition from Social Media: Social Mining, Goethe-Institut Tokyo, February 2017.
4. Yohei Seki: Information Publishing Technology for City Promotion, Japan Seminar on Technology for Sustainability (JSTS 2016), Tsukuba, Japan, July 2016.
5. Yohei Seki: Facilitating Social Communication Using Collaborative Annotation Data, IJCNLP 2013 Workshop on Natural Language Processing for Social Media (SocialNLP 2013), Nagoya, Japan, October 2013 (Keynote Speech).
6. Yohei Seki: Information Access and IFAT, the First Meeting at JSAI SIG on Interactive Information Access and Visual Mining (Domestic), 2012.
7. Yohei Seki: Multilingual Generation from XML-DB. Proc. of the Second NLP & XML Workshop (NLPXML-2002), Taipei, Taiwan, September 2002.

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Non-refereed Papers

1. Yohei Seki: Automatic Summarization Focusing on Document Genre and Text Structure (Dissertation Abstract). ACM SIGIR Forum, Vol.39, No.1 (2005), pp.65-67.

Non-refereed Conferences (Evaluation Workshops etc.)

1. Toshiki Tomihira and Yohei Seki: CUTKB at NTCIR-14 QALab-PoliInfo Task , Proc. of the 14th NTCIR Conference, NII, Japan, June 2019, pp.220-229.
2. Yohei Seki, Lun-Wei Ku, Le Sun, Hsin-Hsi Chen, and Noriko Kando: Overview of Multilingual Opinion Analysis Task at NTCIR-8 - A Step Toward Cross-Lingual Opinion Analysis, Proc. of the Eighth NTCIR Workshop, NII, Japan, June 2010, pp.209-220.
3. Yohei Seki, David Kirk Evans, Lun-Wei Ku, Le Sun, Hsin-Hsi Chen, and Noriko Kando: Overview of Multilingual Opinion Analysis Task at NTCIR-7, Proc. of the Seventh NTCIR Workshop, NII, Japan, December 2008, pp.185-203.
4. Yohei Seki: A Multilingual Polarity Classification Method using Multi-label Classification Technique Based on Corpus Analysis, Proc. of the Seventh NTCIR Workshop, NII, Japan, December 2008, pp.284-291.
5. Yohei Seki: Summarization Focusing on Polarity or Opinion Fragments in Blogs, Proc. of Text Analysis Conference (TAC 2008), (selected as oral presentation), Gaithersburg, Maryland USA, November 2008, pp.406-412.
6. Yohei Seki, David Kirk Evans, Lun-Wei Ku, Hsin-Hsi Chen, Noriko Kando, and Chin-Yew Lin: Overview of Opinion Analysis Pilot Task at NTCIR-6. Proc. of the Sixth NTCIR Workshop, NII, Japan, May 2007, pp.265-278.
7. Yohei Seki: Crosslingual Opinion Extraction from Author and Authority Viewpoints at NTCIR-6. Proc. of the Sixth NTCIR Workshop, NII, Japan, May 2007, pp.336-343.
8. Yohei Seki, Koji Eguchi, Noriko Kando, and Masaki Aono: Opinion-focused Summarization and its Analysis at DUC 2006. Proc. of the Document Understanding Conference Workshop 2006 (DUC 2006) at the Human Language Technology Conf. - North American chapter of the Association for Computational Linguistics (HLT-NAACL 2006), New York Marriott, June 2006, pp.122-130.
9. Hironori Doi, Yohei Seki, and Masaki Aono: A Patent Retrieval Method Using a Hierarchy of Clusters at TUT. Proc. of the Fifth NTCIR Workshop, NII, Japan, December 2005, pp.287-291.
10. Yohei Seki, Koji Eguchi, Noriko Kando, and Masaki Aono: Multi-Document Summarization with Subjectivity Analysis at DUC 2005. Proc. of the Document Understanding Conference Workshop 2005 (DUC 2005) at the Human Language Technology Conf. / Conf. on Empirical Methods in Natural Language Processing (HLT/EMNLP 2005), Vancouver, B.C., Canada, October 2005, pp.119-126.
11. Yohei Seki, Koji Eguchi, and Noriko Kando: User-focused Multi-document Summarization with Paragraph Clustering and Sentence-type Filtering. Proc. of the Fourth NTCIR Workshop, NII, Japan, June 2004, pp.459-466.
12. Yohei Seki: Sentence Extraction by tf/idf and Position Weighting from Newspaper Articles. Proc. of the Third NTCIR Workshop, NII, Japan, October 2002, pp.55-59.
13. Yohei Seki: Answer Extraction System by Question Type from Query-Biased Summary for Newspaper Articles. Proc. of the Third NTCIR Workshop, NII, Japan, October 2002, pp.71-77.
14. Yohei Seki: XML Transformation-Based Three-Stage Pipelined Natural Language Generation System. Proc. of the 6th Natural Language Processing Pacific Rim Symposium (NLPRS2001) Exhibition and Demonstration, NII, Japan, November 2001, pp.767-768.

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Grant in aid for scientific research

• Jul. 2022 - Mar. 2023: ``Development of Indicators to Visualize Gaps of Stances Relevant for Political Issues between Citizen and Local Governments'', Grant-in-Aid for Challenging Exploratory Research, JPY 4,900,000 (#22K19822) Principal Investigator
• Apr. 2019 - Mar. 2023: ``Automatic Evaluation of Indicators for City Services Using Citizen Sentiments in Social Media'', Scientific Research (B), JPY 13,000,000 (#19H04420) Principal Investigator
• Apr. 2016 - Mar. 2019: ``Research on City Promotion Using Public Sentiment on Social Media'', Scientific Research (B), JPY 13,500,000 (#16H02913) Principal Investigator
• Apr. 2012 - Mar. 2015: ``Research on Communication Support with People and Their Attributes'', Scientific Research (C), JPY 4,100,000 (#24500291) Principal Investigator
• Apr. 2013 - Mar. 2016: Scientific Research (B), (#25280110) Co-Investigator (Principal Investigator: Tetsuji Satoh)
• Apr. 2013 - Mar. 2016: Challenging Exploratory Research, (#25540159) Co-Investigator (Principal Investigator: Tetsuji Satoh)
• Apr. 2009 - Mar. 2012: ``Research on Opinion Extraction and Summarization for Blogs in Japanese and English'', Encouragement of Young Scientists (B), JPY 3,300,000 (#21700268) Principal Investigator
• Apr. 2009 - Mar. 2011: ``Research on Opinion Corpus Creation for Multiple Document Genre'', Scientific Research in Priority Areas , JPY 4,400,000 (#21011003) Principal Investigator
• Apr. 2009 - Mar. 2012: Scientific Research (B), (#21300029) Co-Investigator (Principal Investigator: Masaharu Yoshioka)
• Apr. 2006 - Mar. 2008: ``Research on Automatic Evaluation of Multi-Document Summarization Focusing on Subjective Information Needs'', Encouragement of Young Scientists (B), JPY 3,400,000 (#18700241) Principal Investigator
• Apr. 2004 - Mar. 2007: ``Multi-Document Viewpoint Summarization Based on Users’ Intention and Document Feature'', Exploratory Research, (#16650053) Co-Investigator (Principal Investigator: Noriko Kando)

Public funding

• Jul. 2008 - Mar. 2009: Overseas Advanced Research Practice Support Program of MEXT, Ministry of Education, Culture, Sports, Science and Technology, JPY 3,000,000, 2008

Others

• Funds on Research Projects of Faculty of Library, Information and Media Science, University of Tsukuba, 2010
• Toyohashi University of Technology, Collaborative Research Fund (with Kizasi Company), 2008-2009
• National Institute of Informatics, Collaborative Research Fund, 2005-2008
• Artificial Intelligence Research Promotion Foundation, Research Funds, 2007
• Nagoya Industrial Science Research Institute, International Conference Travel Funds, 2006
• Kayamori Foundation of Informational Science Advancement, Research Funds, 2002
• Electrical and Electric Foundation of Informatics Advancement, International Conference Travel Funds, 2002

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