Keisuke Otaki

According to our database, Keisuke Otaki authored at least 41 papers between 2011 and 2026.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2026

Crowdsourced Collection and Visualization of Urban Mood via a Multisensory Interactive System.

Xinni Yang, Keisuke Otaki, Takayoshi Yoshimura, Hiroyuki Sakai, Da Li, Yukiko Kawai

Proceedings of the Nineteenth ACM International Conference on Web Search and Data Mining, 2026

Designing a Gamified Task Map Based on Multisensory User-Contributed Data to Promote Urban Exploration.

Xinni Yang, Keisuke Otaki, Takayoshi Yoshimura, Hiroyuki Sakai, Da Li, Yukiko Kawai

Proceedings of the Extended Abstracts of the 2026 CHI Conference on Human Factors in Computing Systems, 2026

2025

Impact of Tone-Aware Explanations in Recommender Systems.

Ayano Okoso, Keisuke Otaki, Satoshi Koide, Yukino Baba

Trans. Recomm. Syst., December, 2025

Data-Driven Discrete Geofence Design Using Binary Quadratic Programming.

Keisuke Otaki, Akihisa Okada, Tadayoshi Matsumori, Hiroaki Yoshida

CoRR, September, 2025

Travel itinerary recommendation using interaction-based augmented data.

Keisuke Otaki, Yukino Baba

Expert Syst. Appl., 2025

Roaming Navigation-in-the-wild: How Pedestrians Subjectively Perceive Non-shortest Routes.

Keisuke Otaki, Tomosuke Maeda, Keiko Uemura, Takayoshi Yoshimura

Proceedings of the 33rd ACM International Conference on Advances in Geographic Information Systems, 2025

Subjective Experiences in Urban Spaces from the Lens of Crowds, Personality, and Large Language Models.

Keisuke Otaki, Xinni Yang, Takayoshi Yoshimura, Hiroyuki Sakai, Da Li, Yukiko Kawai

Proceedings of the 8th ACM SIGSPATIAL International Workshop on AI for Geographic Knowledge Discovery, 2025

2024

A Case Study on Recommender Systems in Online Conferences: Behavioral Analysis through A/B Testing.

Ayano Okoso, Keisuke Otaki, Yoshinao Ishii, Satoshi Koide

IEICE Trans. Inf. Syst., 2024

QUBO Formulation Using Sequence Pair With Search Space Restriction for Rectangle Packing Problem.

Akihisa Okada, Keisuke Otaki, Tadayoshi Matsumori, Hiroaki Yoshida, Kotaro Terada, Nozomu Togawa

IEEE Access, 2024

Toward Tone-Aware Explanations in Recommender Systems.

Ayano Okoso, Keisuke Otaki, Satoshi Koide, Yukino Baba

Proceedings of the 32nd ACM Conference on User Modeling, Adaptation and Personalization, 2024

2023

Experimental study on the information disclosure problem: Branch-and-bound and QUBO solver.

Keisuke Otaki, Akihisa Okada, Hiroaki Yoshida

Frontiers Appl. Math. Stat., 2023

Roaming Navigation: Diverse Constrained Paths Using Heuristic Search.

Keisuke Otaki, Tomosuke Maeda, Takayoshi Yoshimura, Hiroyuki Sakai

IEEE Access, 2023

Extended Travel Itinerary Datasets Towards Reproducibility.

Keisuke Otaki, Yukino Baba

Proceedings of the Workshop on Recommenders in Tourism co-located with the 17th ACM Conference on Recommender Systems (RecSys 2023), 2023

Roaming Navigation for Pedestrians (Demo Paper).

Keisuke Otaki, Ai Nakada, Tomosuke Maeda, Takayoshi Yoshimura, Hiroyuki Sakai

Proceedings of the 31st ACM International Conference on Advances in Geographic Information Systems, 2023

2022

Maximal Likelihood Itinerary Planning with User Interaction Data.

Keisuke Otaki, Yukino Baba

Proceedings of the Workshop on Recommenders in Tourism (RecTour 2022) co-located with the 16th ACM Conference on Recommender Systems (RecSys 2022), 2022

Optimization-based Predictive Approach for On-Demand Transportation.

Keisuke Otaki, Tomoki Nishi, Takahiro Shiga, Toshiki Kashiwakura

Proceedings of the PRICAI 2022: Trends in Artificial Intelligence, 2022

High Density Automated Valet Parking via Multi-agent Path Finding.

Ayano Okoso, Keisuke Otaki, Satoshi Koide, Tomoki Nishi

Proceedings of the 25th IEEE International Conference on Intelligent Transportation Systems, 2022

Planning with Explanations for Finding Desired Meeting Points on Graphs.

Keisuke Otaki

Proceedings of the Thirty-Sixth AAAI Conference on Artificial Intelligence, 2022

Partial Wasserstein Covering.

Keisuke Kawano, Satoshi Koide, Keisuke Otaki

Proceedings of the Thirty-Sixth AAAI Conference on Artificial Intelligence, 2022

2021

Network-Flow-Problem-Based Approach to Multi-Agent Path Finding for Connected Autonomous Vehicles.

Ayano Okoso, Bunyo Okumura, Keisuke Otaki, Tomoki Nishi

Proceedings of the 24th IEEE International Intelligent Transportation Systems Conference, 2021

2020

Cooperative Path Planning for Heterogeneous Agents.

Keisuke Otaki, Satoshi Koide, Ayano Okoso, Tomoki Nishi

Proceedings of the Thirteenth International Symposium on Combinatorial Search, 2020

Distance-Based Heuristic Solvers for Cooperative Path Planning with Heterogeneous Agents.

Keisuke Otaki, Satoshi Koide, Ayano Okoso, Tomoki Nishi

Proceedings of the PRIMA 2020: Principles and Practice of Multi-Agent Systems, 2020

Multi-Agent Path Finding with Destination Choice.

Ayano Okoso, Keisuke Otaki, Tomoki Nishi

Proceedings of the PRIMA 2020: Principles and Practice of Multi-Agent Systems, 2020

Cooperative Routing Problem between Customers and Vehicles for On-demand Mobile Facility Services.

Tomoki Nishi, Keisuke Otaki, Ayano Okoso, Alex Fukunaga

Proceedings of the 23rd IEEE International Conference on Intelligent Transportation Systems, 2020

2019

Multi-Agent Path Finding with Priority for Cooperative Automated Valet Parking.

Ayano Okoso, Keisuke Otaki, Tomoki Nishi

Proceedings of the 2019 IEEE Intelligent Transportation Systems Conference, 2019

Multi-agent Path Planning with Heterogeneous Cooperation.

Keisuke Otaki, Satoshi Koide, Keiichiro Hayakawa, Ayano Okoso, Tomoki Nishi

Proceedings of the 31st IEEE International Conference on Tools with Artificial Intelligence, 2019

Cooperative Routing with Heterogeneous Vehicles.

Keisuke Otaki, Satoshi Koide, Ayano Okoso, Tomoki Nishi

Proceedings of the 18th International Conference on Autonomous Agents and MultiAgent Systems, 2019

2018

Traffic Signal Control Based on Reinforcement Learning with Graph Convolutional Neural Nets.

Tomoki Nishi, Keisuke Otaki, Keiichiro Hayakawa, Takayoshi Yoshimura

Proceedings of the 21st International Conference on Intelligent Transportation Systems, 2018

2017

Learning concepts and their unions from positive data with refinement operators.

Seishi Ouchi, Tomohiko Okayama, Keisuke Otaki, Ryo Yoshinaka, Akihiro Yamamoto

Ann. Math. Artif. Intell., 2017

2015

Edit Operations on Lattices for MDL-based Pattern Summarization.

Keisuke Otaki, Akihiro Yamamoto

Proceedings of the International Workshop on Formal Concept Analysis and Applications, 2015

Periodical Skeletonization for Partially Periodic Pattern Mining.

Keisuke Otaki, Akihiro Yamamoto

Proceedings of the Discovery Science - 18th International Conference, 2015

2014

Detecting Anomalous Subgraphs on Attributed Graphs via Parametric Flow.

Mahito Sugiyama, Keisuke Otaki

Proceedings of the New Frontiers in Artificial Intelligence, 2014

A Sufficient Condition for Learning Unbounded Unions of Languages with Refinement Operators.

Tomohiko Okayama, Ryo Yoshinaka, Keisuke Otaki, Akihiro Yamamoto

Proceedings of the International Symposium on Artificial Intelligence and Mathematics, 2014

Fast Computation of the Tree Edit Distance between Unordered Trees Using IP Solvers.

Seiichi Kondo, Keisuke Otaki, Madori Ikeda, Akihiro Yamamoto

Proceedings of the Discovery Science - 17th International Conference, 2014

Pattern Structures for Understanding Episode Patterns.

Keisuke Otaki, Madori Ikeda, Akihiro Yamamoto

Proceedings of the Eleventh International Conference on Concept Lattices and Their Applications, 2014

Formal Concept Analysis for Process Enhancement Based on a Pair of Perspectives.

Madori Ikeda, Keisuke Otaki, Akihiro Yamamoto

Proceedings of the Eleventh International Conference on Concept Lattices and Their Applications, 2014

2013

Efficient Frequent Connected Induced Subgraph Mining in Graphs of Bounded Tree-Width.

Tamás Horváth, Keisuke Otaki, Jan Ramon

Proceedings of the Machine Learning and Knowledge Discovery in Databases, 2013

2012

Estimation of Generating Processes of Strings Represented with Patterns and Refinements.

Keisuke Otaki, Akihiro Yamamoto

Proceedings of the Eleventh International Conference on Grammatical Inference, 2012

Semi-Supervised Ligand Finding Using Formal Concept Analysis.

Mahito Sugiyama, Kentaro Imajo, Keisuke Otaki, Akihiro Yamamoto

Inf. Media Technol., 2012

Privacy Preserving Using Dummy Data for Set Operations in Itemset Mining Implemented with ZDDs.

Keisuke Otaki, Mahito Sugiyama, Akihiro Yamamoto

IEICE Trans. Inf. Syst., 2012

2011

Discovering Ligands for TRP Ion Channels Using Formal Concept Analysis.

Mahito Sugiyama, Kentaro Imajo, Keisuke Otaki, Akihiro Yamamoto

Proceedings of the Latest Advances in Inductive Logic Programming, 2011