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portrait 田島 敬史 博士(理学)(1996, 東京大学 理学系研究科情報科学専攻
京都大学 国際高等教育院 教授
京都大学 情報学研究科 社会情報学専攻 ソーシャルメディアユニット 教授(併任)

研究課題

発表論文 著作権について

最近の論文

title / published in author(s)  pdf  misc
Disjunctive Sets of Phrase Queries for Diverse Query Suggestion
Proc. of IEEE/WIC/ACM WI, Thessaloniki, Greece, 2019
Ziyang Liao,
Keishi Tajima
Identifying Tags Describing Image Contents
Proc. of ACM Hypertext, Hof, Germany, 2019
Taka Maenishi,
Keishi Tajima
Temporal Analysis of Supply and Demand of Topics on The Web
Proc. of ACM WebSci, pp.143-144, Boston, MA, 2019
Masahiro Inoue,
Keishi Tajima
pdf abstract
poster  .bib
A Ranking Method for Relaxed Queries in Book Search
Proc. of ACM/IEEE JCDL, pp.400-401, Urbana-Champaign, IL, 2019
Momo Kyozuka,
Yang Xu, Keishi Tajima
pdf abstract
poster
Improving Multiclass Classification in Crowdsourcing by Using Hierarchical Schemes
Proc. of WWW Conf., pp.2694-2700, San Francisco, CA, 2019
Xiaoni Duan,
Keishi Tajima
pdf abstract
poster  .bib
A Map Search System based on a Spatial Query Language (demo)
Proc. of EDBT, pp.578-581, Lisbon, Portugal, 2019
Yuanyuan Wang, Panote Siriaraya,
Haruka Sakata, Yukiko Kawai, Keishi Tajima
pdf abstract .bib
demo1  demo2
A Proposal of Spatial Operators for a Collaborative Map Search System
Proc. of ACM IUI, Companion pp.79-80, Los Angeles, CA, 2019
Yuanyuan Wang, Panote Siriaraya,
Yukiko Kawai, Keishi Tajima
Free from ACM Author-Izer abstract
poster  .bib
A Case Study on Start-up of Dataset Construction: In Case of Recipe Named Entity Corpus
Proc. of HMData (collocated with IEEE BigData), pp.3564-3567, Seattle, WA, 2018
Yoko Yamakata,
Keishi Tajima, Shinsuke Mori
pdf abstract
slides  .bib
A Cache-based Approach to Dynamic Switching between Different Dataflows in Crowdsourcing
Proc. of HMData (collocated with IEEE BigData), pp.3552-3554, Seattle, WA, 2018
Yusuke Suzuki, Masaki Matsubara, Keishi Tajima,
Toshiyuki Amagasa, Atsuyuki Morishima
-- abstract  .bib
slides  poster
Ranking Methods for Query Relaxation in Book Search
Proc. of IEEE/WIC/ACM WI, pp.466-473, Santiago, Chile, 2018
Momo Kyozuka,
Keishi Tajima
pdf abstract
slides  .bib
SNS Retrieval Based on User Profile Estimation Using Transfer Learning from Web Search
Proc. of IEEE/WIC/ACM WI, pp.278-285, Santiago, Chile, 2018
Daisuke Kataoka,
Keishi Tajima
pdf abstract
slides  .bib
Efficient Pipeline Processing of Crowdsourcing Workflows
Proc. of ACM CIKM, pp.1559-1562, Turin, Italy, 2018
Ken Mizusawa, Keishi Tajima, Masaki Matsubara,
Toshiyuki Amagasa, Atsuyuki Morishima
Free from ACM Author-Izer abstract
poster  .bib

主要論文

ICDE 2010 で発表した論文にはバグがあります.修正版はこちら.

title / published in author(s)  pdf  misc
Predicting Popularity of Twitter Accounts through the Discovery of Link-Propagating Early Adopters
Proc. of ACM CIKM, pp.639-648, Indianapolis, IN, 2016
Daichi Imamori,
Keishi Tajima
Free from ACM Author-Izer abstract
slides  .bib
Classification of Twitter Accounts into Targeting Accounts and Non-Targeting Accounts
Proc. of ACM Hypertext, pp.291-296, Halifax, Canada, 2016
Hikaru Takemura,
Keishi Tajima
Free from ACM Author-Izer abstract
slides  .bib
Extracting Logical Hierarchical Structure of HTML Documents Based on Headings
Proc. of VLDB, Vol.8, No.12, pp.1606-1617, Kohala Coast, HI, 2015
Tomohiro Manabe,
Keishi Tajima
pdf abstract  .bib
slides  poster
software
Classification of Twitter Follow Links Based on the Followers' Intention
Proc. of ACM SAC, pp.1174-1180, Salamanca, Spain, 2015
Hikaru Takemura,
Atsushi Tanaka, Keishi Tajima
Free from ACM Author-Izer abstract
slides  .bib
Why You Follow: A Classification Scheme for Twitter Follow Links
Proc. of ACM Hypertext, pp.324-326, Santiago, Chile, 2014
Atsushi Tanaka,
Hikaru Takemura, Keishi Tajima
Free from ACM Author-Izer abstract
poster  .bib
Schemaless Semistructured Data Revisited
--Reinventing Peter Buneman's Deterministic Semistructured Data Model--
In Search of Elegance in the Theory and Practice of Computation
- Essays Dedicated to Peter Buneman
, pp.466-482, LNCS, Vol. 8000, Edinburgh, Scotland, 2013
Keishi Tajima pdf abstract
slides  .bib
Tweet Classification Based on Their Lifetime Duration
Proc. of ACM CIKM, pp.2367-2370, Maui, HI, 2012
Hikaru Takemura,
Keishi Tajima
Free from ACM Author-Izer abstract
poster  .bib
Optimal Tree Node Ordering for Child/Descendant Navigations
Proc. of IEEE ICDE, pp.840-843, Long Beach, CA, 2010
Atsuyuki Morishima,
Keishi Tajima, Masateru Tadaishi
pdf abstract
slides  .bib
WildThumb: A Web Browser Supporting Efficient Task Management on Wide Displays
Proc. of ACM IUI, pp.159-168, Hong Kong, 2010
Shenwei Liu,
Keishi Tajima
Free from ACM Author-Izer abstract
slides  .bib
Browsing Large HTML Tables on Small Screens
Proc. of ACM UIST, pp.259-268, Monterey, CA, 2008
Keishi Tajima,
Kaori Ohnishi
Free from ACM Author-Izer abstract  .bib
slides  demo
Incremental Evaluation of a Monotone XPath Fragment
Proc. of ACM CIKM, pp.245-246, Bremen, Germany, 2005
Hidetaka Matsumura,
Keishi Tajima
Free from ACM Author-Izer abstract
poster  .bib
Answering XPath Queries over Networks by Sending Minimal Views
Proc. of VLDB, pp.48-59, Toronto, Canada, 2004
Keishi Tajima,
Yoshiki Fukui
pdf abstract
slides  .bib
Archiving Scientific Data (extended version of the SIGMOD paper)
ACM TODS, Vol.29, No.1 (SIGMOD/PODS special issue), pp.2-42, 2004
Peter Buneman, Sanjeev Khanna,
Keishi Tajima, Wang-Chiew Tan
Free from ACM Author-Izer abstract
.bib
Archiving Scientific Data
Proc. of ACM SIGMOD, pp.1-12, Madison, WI, 2002
Peter Buneman, Sanjeev Khanna,
Keishi Tajima, Wang-Chiew Tan
Free from ACM Author-Izer abstract
.bib
A Query Model to Synthesize Answer Intervals from Indexed Video Units
IEEE Trans. on Knowledge and Data Eng., Vol.13, No.5, pp.824-838, 2001
Sujeet Pradhan, Keishi Tajima,
Katsumi Tanaka
pdf abstract
.bib
Discovery and Retrieval of Logical Information Units in Web
(invited) Proc. of WOWS (ACM DL workshop), pp.13-23, Berkeley, CA, 1999
Keishi Tajima, Kenji Hatano, Takeshi Matsukura,
Ryouichi Sano, Katsumi Tanaka
pdf abstract
slides  .bib
Finding Context Paths for Web Pages
Proc. of ACM Hypertext, pp.13-22, Darmstadt, Germany, 1999
Yoshiaki Mizuuchi,
Keishi Tajima
Free from ACM Author-Izer abstract
slides  .bib
Cut as a Querying Unit for WWW, Netnews, and E-mail
Proc. of ACM Hypertext, pp.235-244, Pittsburgh, PA, 1998
Keishi Tajima, Yoshiaki Mizuuchi,
Masatsugu Kitagawa, Katsumi Tanaka
Free from ACM Author-Izer abstract
slides  .bib
An Equational Object-Oriented Data Model and its Data-Parallel Query Language
Proc. of ACM OOPSLA, pp.1-18, San Jose, CA, 1996
Susumu Nishimura,
Atsushi Ohori, Keishi Tajima
Free from ACM Author-Izer abstract
.bib
Static Detection of Security Flaws in Object-Oriented Databases
Proc. of ACM SIGMOD, pp.341-352, Montreal, Canada, 1996
Keishi Tajima Free from ACM Author-Izer abstract
slides  .bib
A Polymorphic Calculus for Views and Object Sharing
Proc. of ACM PODS, pp.255-266, Minneapolis, MN, 1994
Atsushi Ohori,
Keishi Tajima
Free from ACM Author-Izer abstract
slides  .bib

リンク


tajima@i.kyoto-u.ac.jp / Fax: 075-753-5978 / 総合研究7号館404号室