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    • Ayato Watanabe, Keishi Tajima

    Spammer Detection Based on Task Completion Time Variation in Crowdsourcing

    Proc. of 5th HMData Workshop (collocated with IEEE BigData),
    pp.3568-3570, IEEE Computer Society Press, December 2021 (IEEE Xplore, IEEE CS DL)

    Yixin Zhang, Yoko Yamakata, Keishi Tajima

    MIRecipe: A Recipe Dataset for Stage-Aware Recognition of Changes in Appearance of Ingredients

    Proc. of 3rd ACM International Conference on Multimedia in Asia,
    pp.16:1-16:7, ACM Press, December 2021 (ACM DL)

    Yixin Zhang, Yoko Yamakata, Keishi Tajima

    Supplementing Omitted Named Entities in Cooking Procedural Text with Attached Images

    Proc. of 4th IEEE International Conference on Multimedia Information Processing and Retrieval,
    pp.199-205, September 2021 (IEEE Xplore, IEEE CS DL)

    author list

    Making AI Machines Work for Humans in FoW

    ACM SIGMOD Record, Vol.49, No.2, pp.30-35, ACM Press, June 2020

    Yixin Zhang, Yoko Yamakata, Keishi Tajima

    Categorization of Cooking Actions Based on Textual/Visual Similarity

    Proc. of 5th International Workshop on Multimedia Assisted Dietary Management (MADiMa) (In conj. with ACMMM), pp.42-49, ACM Press, October 2019 (ACM DL)

    Ziyang Liao, Keishi Tajima

    Disjunctive Sets of Phrase Queries for Diverse Query Suggestion

    Proc. of IEEE/WIC/ACM International Conferences on Web Intelligence,
    pp.449-455, ACM Press, October 2019 (ACM DL, IEEE Xplore, IEEE CS DL)

    Taka Menishi, Keishi Tajima

    Identifying Tags Describing Image Contents

    Proc. of 30th ACM Conference on Hypertext and Social Media,
    pp.297-298, ACM Press, September 2019 (ACM DL)

    Masahiro Inoue, Keishi Tajima

    Temporal Analysis of Supply and Demand of Topics on The Web

    Proc. of ACM Conference on Web Science,
    pp.143-144, ACM Press, June 2019 (ACM DL)

    Momo Kyozuka, Yang Xu, Keishi Tajima

    A Ranking Method for Relaxed Queries in Book Search

    Proc. of ACM/IEEE Joint Conference on Digital Libraries,
    pp.400-401, ACM Press, June 2019 (IEEE Xplore, IEEE CS DL, ACM DL)

    Xiaoni Duan, Keishi Tajima,

    Improving Multiclass Classification in Crowdsourcing by Using Hierarchical Schemes

    Proc. of The Web Conference,
    pp.2694-2700, ACM Press, May 2019 (ACM DL)

    Yuanyuan Wang, Panote Siriaraya, Haruka Sakata, Yukiko Kawai, Keishi Tajima

    A Map Search System based on a Spatial Query Language

    (demo paper). Proc. of International Conference on Extending Database Technology,
    pp. 578-581, OpenProceedings.org, March 2019

    Yuanyuan Wang, Panote Siriaraya, Yukiko Kawai, Keishi Tajima

    A Proposal of Spatial Operators for a Collaborative Map Search System

    Companion Proc. of ACM International Conference on Intelligent User Interfaces,
    ACM Press, March 2019 (ACM DL)

    Yoko Yamakata, Keishi Tajima, Shinsuke Mori,

    A Case Study on Start-up of Dataset Construction: In Case of Recipe Named Entity Corpus

    Proc. of 2nd HMData Workshop (collocated with IEEE BigData),
    pp.3564-3567, IEEE Computer Society Press, December 2018 (IEEE Xplore)

    Yusuke Suzuki, Masaki Matsubara, Keishi Tajima, Toshiyuki Amagasa, Atsuyuki Morishima,

    A Cache-based Approach to Dynamic Switching between Different Dataflows in Crowdsourcing

    Proc. of 2nd HMData Workshop (collocated with IEEE BigData),
    pp.3552-3554, IEEE Computer Society Press, December 2018 (IEEE Xplore)

    Momo Kyozuka, Keishi Tajima,

    Ranking Methods for Query Relaxation in Book Search

    Proc. of IEEE/WIC/ACM International Conferences on Web Intelligence,
    pp.466-473, IEEE Computer Society Press, December 2018 (IEEE Xplore, IEEE CS DL)