Notes on Phrasal Indexing: JSCB Evaluation Experiments at NTCIR AD HOC. - Sumio Fujita (NTCIR, 1999)

Evaluation of Japanese Phrasal Indexing with Large Test Collection. - Sumio Fujita (RIAO, 2000)

Reflections on "Aboutness" TREC-9 Evaluation Experiments at Justsystem. - Sumio Fujita (TREC, 2000)

Notes on the Limits of CLIR Effectiveness: NTCIR-2 Evaluation Experiments at Justsystem. - Sumio Fujita (NTCIR, 2001)

More Reflections on "Aboutness" TREC-2001 Evaluation Experiments at Justsystem. - Sumio Fujita (TREC, 2001)

Revisiting Document Length Hypotheses: NTCIR-4 CLIR and Patent Experiments at Patolis. - Sumio Fujita (NTCIR, 2004)

Revisiting Again Document Length Hypotheses TREC 2004 Genomics Track Experiments at Patolis. - Sumio Fujita (TREC, 2004)

A Decade after TREC-4 - NTCIR-5 CLIR-J-J Experiments at Yahoo!Japan. - Sumio Fujita (NTCIR, 2005)

NTCIR-2 as a Rosetta stone in laboratory experiments of IR systems. - Sumio Fujita (Inf. Process. Manag., 2005)

Revisiting Document Length Hypotheses: A Comparative Study of Japanese Newspaper and Patent Retrieval. - Sumio Fujita (ACM Trans. Asian Lang. Inf. Process., 2005)

NTCIR-6 CLIR-J-J Experiments at Yahoo! Japan. - Sumio Fujita (NTCIR, 2007)

Technology survey and invalidity search: A comparative study of different tasks for Japanese patent document retrieval. - Sumio Fujita (Inf. Process. Manag., 2007)

Retrieval parameter optimization using genetic algorithms. - Sumio Fujita (Inf. Process. Manag., 2009)

Click-graph modeling for facet attribute estimation of web search queries. - Sumio Fujita; Keigo Machinaga; Georges Dupret (RIAO, 2010)

Using Related Queries to Improve Web Search Results Ranking. - Georges Dupret; Ricardo Zilleruelo-Ramos; Sumio Fujita (SPIRE, 2010)

Semantics of query rewriting patterns in search logs. - Sumio Fujita; Georges Dupret; Ricardo Baeza-Yates (ESAIR, 2012)

Learning to Rank Query Recommendations by Semantic Similarities - Sumio Fujita; Georges Dupret; Ricardo Baeza-Yates (CoRR, 2012)

Who Stays Longer in Community QA Media? - User Behavior Analysis in cQA -. - Yoshiyuki Shoji; Sumio Fujita; Akira Tajima; Katsumi Tanaka (SocInfo, 2015)

Overview of the NTCIR-12 MobileClick-2 Task. - Makoto P. Kato; Tetsuya Sakai; Takehiro Yamamoto; Virgil Pavlu; Hajime Morita; Sumio Fujita (NTCIR, 2016)

YJST at the NTCIR-12 MobileClick-2 Task. - Yuya Ozawa; Taichi Yatsuka; Sumio Fujita (NTCIR, 2016)

Overview of the NTCIR-12 IMine-2 Task. - Takehiro Yamamoto; Yiqun Liu 001; Min Zhang 006; Zhicheng Dou; Ke Zhou 003; Ilya Markov; Makoto P. Kato; Hiroaki Ohshima; Sumio Fujita (NTCIR, 2016)

YJST at the NTCIR-12 IMine-2 Task. - Yasuaki Yoshida; Hideyuki Maeda; Tatsuhiro Niwa; Sumio Fujita (NTCIR, 2016)

Extracting Search Query Patterns via the Pairwise Coupled Topic Model. - Takuya Konishi; Takuya Ohwa; Sumio Fujita; Kazushi Ikeda; Kohei Hayashi (WSDM, 2016)

Text Similarity Function Based on Word Embeddings for Short Text Analysis. - Adrián Jiménez Pascual; Sumio Fujita (CICLing (1), 2017)

Mobile Vertical Ranking based on Preference Graphs. - Yuta Kadotami; Yasuaki Yoshida; Sumio Fujita; Tetsuya Sakai (ICTIR, 2017)

Online Optimization of Video-Ad Allocation. - Hanna Sumita; Yasushi Kawase; Sumio Fujita; Takuro Fukunaga (IJCAI, 2017)

Dual Constrained Question Embeddings with Relational Knowledge Bases for Simple Question Answering. - Kaustubh Kulkarni; Riku Togashi; Hideyuki Maeda; Sumio Fujita (IJCNLP(2), 2017)

Overview of the NTCIR-13 OpenLiveQ Task. - Makoto P. Kato; Takehiro Yamamoto; Tomohiro Manabe; Akiomi Nishida; Sumio Fujita (NTCIR, 2017)

YJRS at the NTCIR-13 OpenLiveQ Task. - Tomohiro Manabe; Akiomi Nishida; Sumio Fujita (NTCIR, 2017)

LSTM vs. BM25 for Open-domain QA: A Hands-on Comparison of Effectiveness and Efficiency. - Sosuke Kato; Riku Togashi; Hideyuki Maeda; Sumio Fujita; Tetsuya Sakai (SIGIR, 2017)

A Comparative Live Evaluation of Multileaving Methods on a Commercial cQA Search. - Tomohiro Manabe; Akiomi Nishida; Makoto P. Kato; Takehiro Yamamoto; Sumio Fujita (SIGIR, 2017)

Coarsening Massive Influence Networks for Scalable Diffusion Analysis. - Naoto Ohsaka; Tomohiro Sonobe; Sumio Fujita; Ken-ichi Kawarabayashi (SIGMOD Conference, 2017)

Mining alternative actions from community Q&A corpus for task-oriented web search. - Suppanut Pothirattanachaikul; Takehiro Yamamoto; Sumio Fujita; Akira Tajima; Katsumi Tanaka (WI, 2017)

Enhancing Knowledge Graph Embedding with Probabilistic Negative Sampling. - Vibhor Kanojia; Hideyuki Maeda; Riku Togashi; Sumio Fujita (WWW (Companion Volume), 2017)

Euclidean Image Embedding in view of Similarity Ranking in Auction Search by Image. - Riku Togashi; Hideyuki Maeda; Vibhor Kanojia; Kousuke Morimoto; Sumio Fujita (WWW (Companion Volume), 2017)

A Short Note on Proximity-based Scoring of Documents with Multiple Fields. - Tomohiro Manabe; Sumio Fujita (CoRR, 2017)

AdaFlock: Adaptive Feature Discovery for Human-in-the-loop Predictive Modeling. - Ryusuke Takahama; Yukino Baba; Nobuyuki Shimizu; Sumio Fujita; Hisashi Kashima (AAAI, 2018)

Challenges of Multileaved Comparison in Practice: Lessons from NTCIR-13 OpenLiveQ Task. - Makoto P. Kato; Tomohiro Manabe; Sumio Fujita; Akiomi Nishida; Takehiro Yamamoto (CIKM, 2018)

Exploring People's Attitudes and Behaviors Toward Careful Information Seeking in Web Search. - Takehiro Yamamoto; Yusuke Yamamoto; Sumio Fujita (CIKM, 2018)

Boosting PageRank Scores by Optimizing Internal Link Structure. - Naoto Ohsaka; Tomohiro Sonobe; Naonori Kakimura; Takuro Fukunaga; Sumio Fujita; Ken-ichi Kawarabayashi (DEXA (1), 2018)

Classifying Community QA Questions That Contain an Image. - Kenta Tamaki; Riku Togashi; Sosuke Kato; Sumio Fujita; Hideyuki Maeda; Tetsuya Sakai (ICTIR, 2018)

From VQA to Multimodal CQA: Adapting Visual QA Models for Community QA Tasks. - Avikalp Srivastava; Hsin Wen Liu; Sumio Fujita (CoRR, 2018)

Scalable Twitter user clustering approach boosted by Personalized PageRank. - Anup Naik; Hideyuki Maeda; Vibhor Kanojia; Sumio Fujita (Int. J. Data Sci. Anal., 2018)

Mining Alternative Actions from Community Q&A Corpus. - Suppanut Pothirattanachaikul; Takehiro Yamamoto; Sumio Fujita; Akira Tajima; Katsumi Tanaka; Masatoshi Yoshikawa (J. Inf. Process., 2018)

Stochastic Submodular Maximization with Performance-Dependent Item Costs. - Takuro Fukunaga; Takuya Konishi; Sumio Fujita; Ken-ichi Kawarabayashi (AAAI, 2019)

Unsupervised Answer Retrieval with Data Fusion for Community Question Answering. - Sosuke Kato; Toru Shimizu; Sumio Fujita; Tetsuya Sakai (AIRS, 2019)

Towards Automatic Evaluation of Reused Answers in Community Question Answering. - Hsin Wen Liu; Sumio Fujita; Tetsuya Sakai (AIRS, 2019)

Arc Loss: Softmax with Additive Angular Margin for Answer Retrieval. - Rikiya Suzuki; Sumio Fujita; Tetsuya Sakai (AIRS, 2019)

Adapting Visual Question Answering Models for Enhancing Multimodal Community Q&A Platforms. - Avikalp Srivastava; Hsin Wen Liu; Sumio Fujita (CIKM, 2019)

Target-Topic Aware Doc2Vec for Short Sentence Retrieval from User Generated Content. - Kosuke Kurihara; Yoshiyuki Shoji; Sumio Fujita; Martin J. Dürst (iiWAS, 2019)

Final Report of the NTCIR-14 OpenLiveQ-2 Task. - Makoto P. Kato; Akiomi Nishida; Tomohiro Manabe; Sumio Fujita; Takehiro Yamamoto (NTCIR (Revised Selected Papers), 2019)

Overview of the NTCIR-14 OpenLiveQ-2 Task. - Makoto P. Kato; Akiomi Nishida; Tomohiro Manabe; Sumio Fujita; Takehiro Yamamoto (NTCIR, 2019)

Online Evaluations of Features and Ranking Models for Question Retrieval. - Tomohiro Manabe; Sumio Fujita; Akiomi Nishida (NTCIR (Revised Selected Papers), 2019)

YJRS at the NTCIR-14 OpenLiveQ-2 Task. - Tomohiro Manabe; Sumio Fujita; Akiomi Nishida (NTCIR, 2019)

What Rankers Can be Statistically Distinguished in Multileaved Comparisons? - Makoto P. Kato; Akiomi Nishida; Tomohiro Manabe; Sumio Fujita; Takehiro Yamamoto (CIKM, 2020)

Augmentation of Local Government FAQs using Community-based Question-answering Data. - Yohei Seki; Masaki Oguni; Sumio Fujita (iiWAS, 2020)

Automatic Evaluation of Iconic Image Retrieval based on Colour, Shape, and Texture. - Riku Togashi; Sumio Fujita; Tetsuya Sakai (ICMR, 2020)

Cross-Domain Rating Prediction for Market Development. - Yuki Otsuka; Makoto P. Kato; Sumio Fujita; Masatoshi Yoshikawa (WI/IAT, 2020)

Syndromic surveillance using search query logs and user location information from smartphones against COVID-19 clusters in Japan. - Shohei Hisada; Taichi Murayama; Kota Tsubouchi; Sumio Fujita; Shuntaro Yada; Shoko Wakamiya; Eiji Aramaki (CoRR, 2020)

LGTM: A Fast and Accurate kNN Search Algorithm in High-Dimensional Spaces. - Yusuke Arai; Daichi Amagata; Sumio Fujita; Takahiro Hara (DEXA (2), 2021)

How Do Users Revise Zero-Hit Product Search Queries? - Yuki Amemiya; Tomohiro Manabe; Sumio Fujita; Tetsuya Sakai (ECIR (2), 2021)

What Makes a Review Encouraging: Feature Analysis of User Access Logs in a Large-scale Online Movie Review Site. - Kakeru Ito; Yoshiyuki Shoji; Sumio Fujita; Martin J. Dürst (iiWAS, 2021)

Learning to Rank-based Approach for Movie Search by Keyword Query and Example Query. - Kosuke Kurihara; Yoshiyuki Shoji; Sumio Fujita; Martin J. Dürst (iiWAS, 2021)

BanditRank: Learning to Rank Using Contextual Bandits. - Phanideep Gampa; Sumio Fujita (PAKDD (3), 2021)

TKB48 at TREC 2021 Conversational Assistance Track. - Yubo Fang; Hideo Joho; Sumio Fujita (TREC, 2021)

TKB48 at TREC 2021 Fairness Ranking Track. - Zhuoqi Jin; Hideo Joho; Sumio Fujita (TREC, 2021)

TKB48 at TREC 2021 News Track. - Lirong Zhang; Hideo Joho; Sumio Fujita (TREC, 2021)

Influenza Surveillance using Search Engine, SNS, On-line Shopping, Q&A Service and Past Flu Patients. - Taichi Murayama; Nobuyuki Shimizu; Sumio Fujita; Shoko Wakamiya; Eiji Aramaki (CoRR, 2021)

Selectively Expanding Queries and Documents for News Background Linking. - Lirong Zhang; Hideo Joho; Sumio Fujita; Haitao Yu 003 (CIKM, 2022)

Mitigating Privacy Vulnerability Caused by Map Asymmetry. - Ryota Hiraishi; Masatoshi Yoshikawa; Shun Takagi; Yang Cao 011; Sumio Fujita; Hidehito Gomi (DBSec, 2022)

Learned k-NN distance estimation. - Daichi Amagata; Yusuke Arai; Sumio Fujita; Takahiro Hara (SIGSPATIAL/GIS, 2022)

Can a Machine Reading Comprehension Model Improve Ad-hoc Document Retrieval? - Kota Usuha; Makoto P. Kato; Sumio Fujita (ICADL, 2022)

Do Extractive Summarization Algorithms Amplify Lexical Bias in News Articles? - Rei Shimizu; Sumio Fujita; Tetsuya Sakai (ICTIR, 2022)

KASYS at the NTCIR-16 WWW-4 Task. - Kota Usuha; Kohei Shinden; Makoto P. Kato; Sumio Fujita (NTCIR, 2022)

Solving Diversity-Aware Maximum Inner Product Search Efficiently and Effectively. - Kohei Hirata; Daichi Amagata; Sumio Fujita; Takahiro Hara (RecSys, 2022)

Toward Generating Robot-Robot Natural Counseling Dialogue. - Tomoya Hashiguchi; Takehiro Yamamoto; Sumio Fujita; Hiroaki Ohshima (IEICE Trans. Inf. Syst., 2022)

Doc2Vec-based Approach for Extracting Diverse Evaluation Expressions from Online Review Data. - Kosuke Kurihara; Yoshiyuki Shoji; Sumio Fujita; Martin J. Dürst (J. Data Intell., 2022)

Analyzing Web Search Queries of Before and After Purchase on e-Commerce Site. - Yuka Kawada; Takehiro Yamamoto; Hiroaki Ohshima; Yuki Yanagida; Makoto P. Kato; Sumio Fujita (ICADL (1), 2023)

Generating Fine-Grained Aspect Names from Movie Review Sentences Using Generative Language Model. - Tomohiro Ishii; Yoshiyuki Shoji; Takehiro Yamamoto; Hiroaki Ohshima; Sumio Fujita; Martin J. Dürst (iiWAS, 2023)

Movie Keyword Search Using Large-Scale Language Model with User-Generated Rankings and Reviews. - Tensho Miyashita; Yoshiyuki Shoji; Sumio Fujita; Martin J. Dürst (iiWAS, 2023)

Simpler is Much Faster: Fair and Independent Inner Product Search. - Kazuyoshi Aoyama; Daichi Amagata; Sumio Fujita; Takahiro Hara (SIGIR, 2023)

University of Tsukuba Team at the TREC 2023 Deep Learning Track. - Kaiyu Yang; Lingzhen Zheng; Haitao Yu 003; Sumio Fujita; Hideo Joho (TREC, 2023)

University of Tsukuba Team at the TREC 2023 Interactive Knowledge Assistance Track. - Lingzhen Zheng; Kaiyu Yang; Haitao Yu 003; Sumio Fujita; Hideo Joho (TREC, 2023)

What Web Search Behaviors Lead to Online Purchase Satisfaction? - Yuki Yanagida; Makoto P. Kato; Yuka Kawada; Takehiro Yamamoto; Hiroaki Ohshima; Sumio Fujita (WebSci, 2023)

Categorical Diversity-Aware Inner Product Search. - Kohei Hirata; Daichi Amagata; Sumio Fujita; Takahiro Hara (IEEE Access, 2023)

Towards Consistency Filtering-Free Unsupervised Learning for Dense Retrieval. - Haoxiang Shi; Sumio Fujita; Tetsuya Sakai (CoRR, 2023)

Mechanisms to Address Different Privacy Requirements for Users and Locations. - Ryota Hiraishi; Masatoshi Yoshikawa; Yang Cao 011; Sumio Fujita; Hidehito Gomi (IEICE Trans. Inf. Syst., 2023)

BERT-Based Movie Keyword Search Leveraging User-Generated Movie Rankings and Reviews. - Tensho Miyashita; Yoshiyuki Shoji; Sumio Fujita; Martin J. Dürst (BigComp, 2024)

Over-penalization for Extra Information in Neural IR Models. - Kota Usuha; Makoto P. Kato; Sumio Fujita (CIKM, 2024)

Towards Incorporating Personalized Context for Conversational Information Seeking. - Haitao Yu 003; Lingzhen Zheng; Kaiyu Yang; Sumio Fujita; Hideo Joho (IR-RAG@SIGIR, 2024)

PR-Rank: A Parameter Regression Approach for Learning-to-Rank Model Adaptation Without Target Domain Data. - Takumi Ito; Atsuki Maruta; Makoto P. Kato; Sumio Fujita (WISE (4), 2024)

How to Mine Potentially Popular Items? A Reverse MIPS-based Approach. - Daichi Amagata; Kazuyoshi Aoyama; Keito Kido; Sumio Fujita (SSDBM, 2025)

Approximate Reverse k-Ranks Queries in High Dimensions. - Daichi Amagata; Kazuyoshi Aoyama; Keito Kido; Sumio Fujita (SSDBM, 2025)

How to Mine Potentially Popular Items? A Reverse MIPS-based Approach. - Daichi Amagata; Kazuyoshi Aoayama; Keito Kido; Sumio Fujita (CoRR, 2025)

Approximate Reverse k-Ranks Queries in High Dimensions. - Daichi Amagata; Kazuyoshi Aoyama; Keito Kido; Sumio Fujita (CoRR, 2025)