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Journal

  1. Daichi Amagata, Takahiro Hara, "Efficient Density-Peaks Clustering Algorithms on Static and Dynamic Data in Euclidean Space," ACM Transactions on Knowledge Discovery from Data (TKDD), vol.18, no.1, pp.2:21-2:27, January 2024.
  2. Daichi Amagata, Takahiro Hara, "Reverse Maximum Inner Product Search: Formulation, Algorithms, and Analysis," ACM Transactions on the WEB (TWEB), vol.17, no.4, pp.26:1-26:23, July 2023.
  3. Heng Zhou, Takuya Maekawa, "GPS-assisted Indoor Pedestrian Dead Reckoning," Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT), January 2023.
  4. Kei Tanigaki, Teoh, Chuin, Tze, Naoya Yoshimura, Takuya Maekawa, Takahiro Hara, "Predicting Performance Improvement of Human Activity Recognition Model by Additional Data Collection," Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT), vol.6, no.3, pp.1-33, September 2022.
  5. Naoya Yoshimura, Takuya Maekawa, Takahiro Hara, Atsushi Wada, Yasuo Namioka, "Acceleration-based Activity Recognition of Repetitive Works with Lightweight Ordered-work Segmentation Network," Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT), vol.6, no.2, pp.86, June 2022.
  6. Qingxin Xia, Joseph Korpela, Yasuo Namioka, Takuya Maekawa, "Robust Unsupervised Factory Activity Recognition with Body-worn Accelerometer Using Temporal Structure of Multiple Sensor Data Motifs," Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT), vol.4, no.3, pp.30, September 2020.
  7. Qingxin Xia, Atsushi Wada, Joseph Korpela, Takuya Maekawa, Yasuo Namioka, "Unsupervised Factory Activity Recognition with Wearable Sensors Using Process Instruction Information," Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT), vol.3, no.2, pp.1-23, June 2019.
  8. Thilina Dissanayake, Takuya Maekawa, Daichi Amagata, Takahiro Hara, "Detecting Door Events Using a Smartphone Via Active Sound Sensing," Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT), vol.2, no.4, pp.Article No.160, December 2018.
  9. Tomoya Nakatani, Takuya Maekawa, Masumi Shirakawa, Takahiro Hara, "Estimating the Physical Distance between Two Locations with Wi-Fi Received Signal Strength Information Using Obstacle-aware Approach," Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT), vol.2, no.130, September 2018.
  10. Joseph Korpela, Takuya Maekawa, "Privacy-Preserving Recognition of Object-based Activities Using Near-Infrared Reflective Markers," ACM/Springer Personal and Ubiquitous Computing (ACM/Springer PUC), vol.22, no.2, pp.365-377, April 2018.
  11. Tatsuya Nakamura, Masumi Shirakawa, Takahiro Hara, Shojiro Nishio, "Wikipedia-based Relatedness Measurements for Multilingual Short Text Clustering," ACM Transactions on Asian and Low-Resource Language Information Processing , January 2018.
  12. Kazuya Ohara, Takuya Maekawa, Yasuyuki Matsushita, "Detecting State Changes of Indoor Everyday Objects using Wi-Fi Channel State Information," Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT), vol.1, no.88, September 2017.
  13. Masumi Shirakawa, Takahiro Hara, Shojiro Nishio, "IDF for word N-grams," ACM Transactions on Information Systems , vol.36, no.1, pp.Article 5, August 2017.
  14. Daichi Amagata, Takahiro Hara, "A General Framework for MaxRS and MaxCRS Monitoring in Spatial Data Streams," ACM Transactions on Spatial Algorithms and Systems , vol.3, no.1, pp.1-34, May 2017.

International Conference

  1. Maekawa Yoshiyuki, Shuichiro Haruta, Yuma Dose, Takahiro Hara, "A News Recommendation Framework Utilizing ChatGPT: Estimating Target Audience and News Categories," Proceedings of ACM Symposium on Applied Computing (SAC), March 2025.
  2. Zhi Li, Daichi Amagata, Yihong Zhang, Takahiro Hara, Shuichiro Haruta, Kei Yonekawa, Mori Kurokawa, "Mutual Information-based Preference Disentangling and Transferring for Non-overlapped Multi-target Cross-domain Recommendations," Proceedings of International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR), July 2024.
  3. Aoyama Kazuyoshi, Daichi Amagata, Sumio Fujita, Takahiro Hara, "Simpler is Much Faster: Fair and Independent Inner Product Search," Proceedings of International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR), pp.2379–2383, July 2023.
  4. Hao Niu, Duc Nguyen, Kei Yonekawa, Mori Kurokawa, Chihiro Ono, Daichi Amagata, Takuya Maekawa, Takahiro Hara, "User-irrelevant Cross-domain Association Analysis for Cross-domain Recommendation with Transfer Learning," Proceedings of the ACM Workshop on Intelligent Cross-Data Analysis and Retrieval (ICDAR), pp.37-45, June 2023.
  5. Kohei Hirata, Daichi Amagata, Sumio Fujita, Takahiro Hara, "Solving Diversity-Aware Maximum Inner Product Search Efficiently and Effectively," Proceedings of ACM Recommender Systems Conference (RecSys), pp.198-207, September 2022.
  6. Zhi Li, Daichi Amagata, Takuya Maekawa, Kei Yonekawa, Mori Kurokawa, Takahiro Hara, "Trends-enhanced Attention & Memory Networks for E-commerce Recommendation," Proceedings of International ACM SIGIR Workshop On eCommerce (SIGIReCom), July 2022.
  7. Naoya Yoshimura, Yushi Sato, Yuta Kageyama, Jun Murao, Satoshi Yagi, Parinya Punpongsanon, "Hugmon: Exploration of Affective Movements for Hug Interaction using Tensegrity Robot," ACM/IEEE International Conference on Human-Robot Interaction (HRI), pp.1105-1109, March 2022.
  8. Daichi Amagata, Takahiro Hara, "Reverse Maximum Inner Product Search: How to efficiently find users who would like to buy my item?," Proceedings of ACM Recommender Systems Conference (RecSys), pp.273-281, September 2021.
  9. Daichi Amagata, Makoto Onizuka, Takahiro Hara, "Fast and Exact Outlier Detection in Metric Spaces: A Proximity Graph-based Approach," Proceedings of ACM SIGMOD International Conference on Management of Data (SIGMOD), pp.36-48, June 2021.
  10. Daichi Amagata, Takahiro Hara, "Fast Density-Peaks Clustering: Multicore-based Parallelization Approach," Proceedings of ACM SIGMOD International Conference on Management of Data (SIGMOD), pp.49-61, June 2021.
  11. Masayuki Fujiwara, Tomoya Nakatani, Yiming Tian, Joseph Korpela, Takuya Maekawa, Takahiro Hara, "Smartphone-assisted Automatic Indoor Localization of BLE-enabled Appliances Using BLE and GNSS Signals," Proceedings of the ACM International Conference on Systems for Energy-Efficient Buildings, Cities, and Transportation (BuildSys), pp.80-89, November 2020.
  12. Shinya Ishiyama, Tadashi Nakano, Yutaka Okaie, Takahiro Hara, Kaname Harumoto, "Cooperative signaling and directed migration of bio-nanomachines in mobile molecular communication," Proceedings of ACM International Conference on Nanoscale Computing and Communication (NanoCom), pp.3:1-3:7, September 2020.
  13. Tatsuya Nakamura, Tomu Tominaga, Miki Watanabe, Nattapong Thammasan, Kenji Urai, Yutaka Nakamura, Kazufumi Hosoda, Takahiro Hara, Yoshinori Hijikata, "Investigation on Dynamics of Group Decision Making with Collaborative Web Search," Proceedings of IEEE/WIC/ACM International Conference on Web Intelligence (WI), pp.434-441, August 2017.
  14. Kazuya Matsuo, Keisuke Gotoh, Akimitsu Kanzaki, Takahiro Hara, "A Sampling-based Boundary Detection Method with Consideration of Boundary Shape in Dense Mobile Wireless Sensor Networks," Proceedings of ACM International Conference on Advances in Mobile Computing and Multimedia (MoMM), pp.307-316, November 2016.
  15. Jumpei Namba, Tadashi Nakano, Yutaka Okaie, Takahiro Hara, "Epidemic Information Dissemination for Molecular Communication among Mobile Bio-nanomachines," Proceedings of ACM International Conference on Nanoscale Computing and Communication (NanoCom), pp.41:1-41:2, September 2016.

Award

  1. Kazuya Matsuo, Keisuke Gotoh, Akimitsu Kanzaki, Takahiro Hara, "Best Paper Award (Emerald Group Publishing Limited)," Proceedings of ACM International Conference on Advances in Mobile Computing and Multimedia , 2016年11月.
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