Publications

Book Chapter

1. Jun Ito, Kyosuke Nishida, Takahide Hoshide, Hiroyuki Toda, and Tadasu Uchiyama, "Demographic and Psychographic Estimation of Twitter Users Using Social Structures" in "Online Social Media Analysis and Visualization," Springer Lecture Notes in Social Networks, 2014.

International Conference Papers (Refereed) 

1. Takeshi Kurashima, Tomoharu Iwata, Tomu Tominaga, Shuhei Yamamoto, Hiroyuki Toda, and Kazuhisa Takemura, "Personal History Affects Reference Points: A Case Study of Codeforces", Proc. the 17th International Conference on Web and Social Media (ICWSM 2023) (to appear)

2. Hideaki Kim, Taichi Asami, and Hiroyuki Toda, "Fast Bayesian Inference of Point Process Intensity as Function of Covariates", Proc. the 36th Conference on Neural Information Processing Systems (NeurIPS 2022), Dec. 2022.

3. Hiroki Kanagawa, Yusuke Ijima, and Hiroyuki Toda, "Joint Modeling of Multi-Sample and Subband Signals for Fast Neural Vocoding on CPU", Proc. 23rd INTERSPEECH Conference (INTERSPEECH 2022), pp. 1626-1630, Sep. 2022.

4. Yasunori Akagi, Naoki Marumo, Hideaki Kim, Takeshi Kurashima, and Hiroyuki Toda, "Non-approximate Inference for Collective Graphical Models on Path Graphs via Discrete Difference of Convex Algorithm", Proc. the 35th Annual Conference on Neural Information Processing Systems (NeurIPS 2021), Dec. 2021.

5. Yuki Kurauchi, Yoshiaki Takimoto, Shuhei Yamamoto, Shunichi Seko,  and Hiroyuki Toda, "Asterisk-Shaped Features for Tabular Data", Proc. 30th ACM International Conference on Information and Knowledge Management (CIKM 2021), Nov. 2021.

6. Yuya Hikima, Masahiro Kohjima, Yasunori Akagi, Takeshi Kurashima, and Hiroyuki Toda, "Price and Time Optimization for Utility-Aware Taxi Dispatching", Proc.18th Pacific Rim International Conference On Artificial Intelligence (PRICAI 2021) , Nov. 2021.

7. Masami Takahashi, Masahiro Kohjima, Ryo Hashimoto, Asuka Miyake, Takeshi Kurashima, and Hiroyuki Toda, "Effects of Intervening Backwards from Goals to Improve Sleep Habits", Proc. ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp 2021), Sep. 2021.

8. Maya Okawa, Tomoharu Iwata, Yusuke Tanaka, and Hiroyuki Toda, Takeshi Kurashima, and Hisashi Kashima, "Dynamic Hawkes Processes for Discovering Time-evolving Communities' States behind Diffusion Processes", Proc. ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD 2021), Aug. 2021. arXiv

9. Tomu Tominaga, Shuhei Yamamoto, Takeshi Kurashima, and Hiroyuki Toda, "Effects of Personal Characteristics on Temporal Response Patterns in Ecological Momentary Assessments", Proc. the 18th IFIP TC13 International Conference on Human Computer Interaction (INTERACT 2021), Aug. 2021. Springer

10. Yuya Hikima, Yasunori Akagi, Hideaki Kim, Masahiro Kohjima, Takeshi Kurashima, and Hiroyuki Toda, "Integrated Optimization of Bipartite Matching and Its Stochastic Behavior: New Formulation and Approximation Algorithm via Min-cost Flow Optimization", Proc. the 35th AAAI Conference on Artificial Intelligence (AAAI 2021), Feb. 2021. Conference Site

11. Masami Takahashi, Masahiro Kohjima, Takeshi Kurashima, and Hiroyuki Toda, "Can Reinforcement Learning Lead to Healthy Life?: Simulation Study Based on User Activity Logs", Proc. the 25th International Conference on Pattern Recognition (ICPR 2020), Jan. 2021. Conference Site

12. Masahiro Kohjima, Masami Takahashi, and Hiroyuki Toda, "Censored Markov Decision Processes: A Framework for Safe Reinforcement Learning in Collaboration with External Systems", Proc. the 59th IEEE Conference on Decision and Control (CDC 2020), pp. 3623-3630, Dec. 2021. Publisher's Site

13. Masahiro Kohjima, Takeshi Kurashima, and Hiroyuki Toda, "Learning with Labeled and Unlabeled Multi-Step Transition Data for Recovering Markov Chain from Incomplete Transition Data", Proc. the 29th International Joint Conference on Artificial Intelligence and the 17th Pacific Rim International Conference on Artificial Intelligence (IJCAI-PRICAI 2020), pp.2412-2419, July 2020. Conference Site

14. Shuhei Yamamoto, Takeshi Kurashima, and Hiroyuki Toda, "Identifying Near-Miss Traffic Incidents in Event Recorder Data", Proc. the 24th Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD 2020), pp. 717-728, May 2020. Publisher's Site

15. Yasunori Akagi, Takuya Nishimura, Yusuke Tanaka, Takeshi Kurashima, and Hiroyuki Toda, "Exact and Efficient Inference for Collective Flow Diffusion Model via Minimum Convex Cost Flow Algorithm", Proc. the 34th AAAI Conference on Artificial Intelligence (AAAI 2020), February 2020. Conference Site

16. Hidetaka Ito, Kyota Tsutsumida, Tatsushi Matsubayashi, Takeshi Kurashima, and Hiroyuki Toda, "Coordinated Traffic Signal Control via Bayesian Optimization for Hierarchical Conditional Spaces", Proc. Winter Simulation Conference 2019 (WSC 2019), December 2019. Conference Site

17. Yusuke Tanaka, Toshiyuki Tanaka, Tomoharu Iwata, Takeshi Kurashima, Maya Okawa, Yasunori Akagi, Hiroyuki Toda, "Spatially Aggregated Gaussian Processes with Multivariate Areal Outputs", Proc. the 33rd Annual Conference on Neural Information Processing Systems (NeurIPS 2019), December 2019. arXiv

18. Masahiro Kohjima, Tatsushi Matsubayashi, and Hiroyuki Toda, "Exemplar Based Mixture Models with Censored Data", Proc. the 11th Asian Conference on Machine Learning (ACML 2019), pp. 535-550, November 2019.

19. Noriko Yokoyama, Masahiro Kohjima, Tatsushi Matsubayashi and Hiroyuki Toda, "Efficient Bayesian optimization based on parallel sequential random embeddings", Proc. the 5th Asian Conference on Pattern Recognition (ACPR 2019), November 2019.

20. Yoshiaki Takimoto, Yusuke Tanaka, Takeshi Kurashima, Shuhei Yamamoto, Maya Okawa, and Hiroyuki Toda, "Predicting Traffic Accidents with Event Recorder Data", Proc. ACM SIGSPATIAL Workshop on Prediction of Human Mobility (PredictGIS), November 2019.

21. Masami Takahashi, Masahiro Kohjima, Takeshi Kurashima, Tatsushi Matsubayashi, and Hiroyuki Toda, "Identifying Self-changeable Actions toward Regulating Rhythm of Daily Life", Proc. ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp? 2019), pp.218-221, September 2019. (poster)

22. Maya Okawa, Tomoharu Iwata, Takeshi Kurashima, Yusuke Tanaka, Hiroyuki Toda, and Naonori Ueda, "Deep Mixture Point Processes: Spatio-temporal Event Prediction with Rich Contextual Information", Proc. ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD 2019), August 2019. arXiv

23. Masahiro Kohjima, Tatsushi Matsubayashi, Hiroyuki Toda, "Generalized Interval Valued Nonnegative Matrix Factorization", Proc. the 44th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2019), May 2019.

24. Daisuke Sato, Tatsushi Matsubayashi, Hiroyuki Toda, "People Flow Prediction by Multi-Agent Simulator",Proc. the 6th IEEE International Conference on Big Data and Smart Computing (BigComp? 2019), Feb. 2019. (to appear)

25. Yusuke Tanaka, Tomoharu Iwata, Toshiyuki Tanaka, Takeshi Kurashima, Maya Okawa, Hiroyuki Toda, "Refining Coarse-grained Spatial Data using Auxiliary Spatial Data Sets with Various Granularities", Proc. 33rd AAAI Conference on Artificial Intelligence (AAAI 2019), Jan. 2019. arXiv

26. Hiroshi Kiyotake, Masahiro Kohjima, Tatsushi Matsubayashi and Hiroyuki Toda, "Multi Agent Flow Estimation Based on Bayesian Optimization with Time Delay and Low Dimensional Parameter Conversion Trick", Proc. the 21st International Conference on Principles and Practice of Multi-Agent Systems (PRIMA 2018), October 2018.

27. Hengjin Tang, Tatsuhi Matsubayashi, Daisuke Sato and Hiroyuki Toda, "Time-Series Predictions for People-Flow with Simulation Data", Proc. the 21st International Conference on Principles and Practice of Multi-Agent Systems (PRIMA 2018), October 2018.

28. Masahiro Kohjima, Tatsushi Matsubayashi, Hiroyuki Toda, "Variational Bayes for Mixture Models with Censored Data," Proc. the European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECML-PKDD 2018), September 2018.

29. Yasunori Akagi, Takuya Nishimura, Takeshi Kurashima, and Hiroyuki Toda, "A Fast and Accurate Method for Estimating People Flow from Spatiotemporal Population Data," Proc. the 27th International Joint Conference on Artificial Intelligence and the 23rd European Conference on Artificial Intelligence (IJCAI-ECAI 2018), July 2018. Conference Site

30. Yusuke Tanaka, Tomoharu Iwata, Takeshi Kurashima, Hiroyuki Toda, and Naonori Ueda, "Estimating Latent People Flow without Tracking Individuals," Proc. the 27th International Joint Conference on Artificial Intelligence and the 23rd European Conference on Artificial Intelligence (IJCAI-ECAI 2018), July 2018. Conference Site

31. Maya Okawa, Hideaki Kim, and Hiroyuki Toda, "Online Traffic Flow Prediction Using Convolved Bilinear Poisson Regression," Proc. 18th IEEE International Conference on Mobile Data Management (MDM 2017) pp.134-143, May 2017.Honorable mention award

32. Yuki Endo, Kyosuke Nishida, Hiroyuki Toda, and Hiroshi Sawada, "Predicting Destinations from Partial Trajectories Using Recurrent Neural Network," Proc. 21th Pacific Asia Conference on Knowledge Discovery and Data Mining (PAKDD 2017) pp.160-172, May 2017.

33. Takuya Nishimura, Kyosuke Nishida, Hiroyuki Toda, and Hiroshi Sawada, "How fashionable is each street?: Quantifying road characteristics using social media," Proc. 2016 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2016), pp.429-436, August 2016.

34. Yuki Endo, Hiroyuki Toda, and Kyosuke Nishida, Akihisa Kawanobe, "Deep Feature Extraction from Trajectories for Transportation Mode Estimation," Proc. 20th Pacific Asia Conference on Knowledge Discovery and Data Mining (PAKDD 2016) pp.54-66, April 2016.

35. Kyosuke Nishida, Hiroyuki Toda, and Yoshimasa Koike, "Extracting Arbitrary-shaped Stay Regions from Geospatial Trajectories with Outliers and Missing Points", Proc. 8th ACM SIGSPATIAL International Workshop on Computational Transportation Science (IWCTS 2015), November 2015.

36. Mayumi Hadano, Makoto Nakatsuji, Hiroyuki Toda, and Yoshimasa Koike,"Assigning Tasks to Workers by Referring to Their Schedules in Mobile Crowdsourcing", Proc. Third AAAI Conference on Human Computation and Crowdsourcing (HCOMP 2015) pp.10-11, November 2015.

37. Yuki Endo, Hiroyuki Toda, Yoshimasa Koike, "What's Hot in The Theme: Query Dependent Emerging Topic Extraction from Social Streams," Proc. 24th International World Wide Web Conference (WWW 2015) Companion Volume, pp.31-32, May 2015.

38. Jun Ito, Jing Song, Hiroyuki Toda, Yoshimasa Koike, Satoshi Oyama, "Assessment of Tweet Credibility with LDA Features," Proc. 24th International World Wide Web Conference (WWW 2015) Companion Volume, pp.953-958, May 2015.

39. Kyosuke Nishida, Hiroyuki Toda, Takeshi Kurashima, Yoshihiko Suhara, "Probabilistic Identification of Visited Point-of-Interest for Personalized Automatic Check-in", Proc. the 2014 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp? 2014), September 2014.

40. Noriko Yokoyama, KAname Funakoshi, Hiroyuki Toda, Yoshimasa Koike, "Motivation System using Purpose-for-Action", Proc. 25th International Conference on Database and Expert Systems Applications (DEXA 2014) pp. 66-80, September 2014.

41. Makoto Nakatsuji, Yasuhiro Fujiwara, Hiroyuki Toda, Hiroshi Sawada, Jin Zheng, James Alexander Hendler, "Semantic Data Representation for Improving Tensor Factorization", Proc. 28th AAAI Conference on Artificial Intelligence (AAAI 2014), pp.1004-2011, July 2014.

42. Yoko Tanaka, Yoshihiko Suhara, Nobuaki Hiroshima, Hiroyuki Toda and Seiji Susaki, "Snippet generation by Identifying Attribute Associated Information," Proc. the 9th Asia Information Retrieval Societies Conference, Dececmber 2013.

43. Jun Ito, Kyosuke Nishida, Takahide Hoshide, Hiroyuki Toda and Tadasu Uchiyama, "What is he/she like?: Estimating Twitter User Attributes from the Contents and Social Neighbors," Proc. the 2013 IEEE/ACM International Conference on Social Networks Analysis and Mining (ASONAM 2013), pp 1448-1450, August 2013.

44. Yoshihiko Suhara, Hiroyuki Toda, Shuichi Nishioka and Seiji Susaki, "Automatically Generated Spam Detection Based on Sentence-level Topic Information", Proc. 3rd Joint WICOW/AIRWeb Workshop on Web Quality (WebQuality? 2013), May 2013.

45. Yutaka Kabutoya, Tomoharu Iwata, Hiroyuki Toda, and Hiroyuki Kitagawa, "A Probabilistic Model for Diversifying Recommendation Lists", Proc. 15th Asia-Pacific Web Conference (APWeb 2013), pp 348-359, April 2013.

46. Makoto Nakatsuji, Yasuhiro Fujiwara, Toshio Uchiyama, and Hiroyuki Toda, "Collaborative filtering by analyzing dynamic user interests modeled by taxonomy", Proc. 11th international conference on The Semantic Web (ISWC 2012) - Volume Part I, pp 361-377, November 2012.

47. Masaya Murata, Hiroyuki Toda, Yumiko Matsuura, Ryoji Kataoka, Takayoshi Mochizuki, "Detecting Periodic Changes in Search Intentions in a Search Engine", Proc. ACM 19th Conference on Information and Knowledge Management (CIKM 2010),pp 1525-1528, November 2010. (short paper)

48. Hiroyuki Toda, Norihito Yasuda, Yumiko Matsuura, Ryoji Kataoka, "Geographic Information Retrieval to Suit Immediate Surroundings", Proc. 17th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL GIS 2009), pp 452-455, Seattle, WA, USA, November 4-6, 2009. (poster)

49. Masaya Murata, Hiroyuki Toda, Yumiko Matsuura, Ryoji Kataoka, "Query-page intention matching using clicked titles and snippets to boost search rankings", Proc. the 2009 Joint International Conference on Digital Libraries (JCDL 2009), pp 105-114, Austin, TX, USA, June 2009.

50. Hiroyuki Toda, Norihito Yasuda, Yumiko Matsuura, Ryoji Kataoka, "Incorporating place name extents into Geo-IR ranking", Proc. ACM 17th Conference on Information and Knowledge Management (CIKM 2008), pp 1489-1490, Napa Valley, CA, USA, October 26-30, 2008. (poster)

51. Takeshi Kurashima, Katsuji Bessho, Hiroyuki Toda, Toshio Uchiyama, Ryoji Kataoka, "Ranking the Entities Using Comparative Relations", Proc. 19th International Conference on Database and Expert Systems Applications (DEXA 2008), pp 124-133 Turin, Italy, Sep. 2008.

52. Masaya Murata, Hiroyuki Toda, Yumiko Matsuura, Ryoji Kataoka, "Improving Mobile Web-IR using Access Concentration Sites in Search Results", Proc. 9th International Conference on Web Information Systems Engineering (WISE 2008), pp 221-234, Auckland, New Zealand, Sep. 2008. Kambayashi Best Paper Award

53. Hiroyuki Toda, Hiroyuki Kitagawa, Ko Fujimura, Ryoji Kataoka, "Topic Structure Mining using Temporal Co-occurrence", Proc. 2nd International Conference on Ubiquitous Information Management and Communication (ICUIMC 2008), pp 253-258, Suwon, Korea, Jan. 2008.

54. Yoshihiko Suhara, Hiroyuki Toda, Akito Sakurai, "Extracting Related Named Entities from Blogosphere for Event Mining", Proc. 2nd International Conference on Ubiquitous Information Management and Communication (ICUIMC 2008), pp 242-246, Suwon, Korea, Jan. 2008.

55. Rui Kimura, Satoshi Oyama, Hiroyuki Toda, and Katsumi Tanaka, "Creating Personal Histories from the Web using Namesake Disambiguation and Event Extraction", Proc. 7th International Conference on Web Engineering (ICWE 2007), LNCS4607, pp 400-414, Como, Italy, July 2007. Springer

56. Yoshihiko Suhara, Hiroyuki Toda, Akito Sakurai, "Event mining from the Blogosphere using topic words", Proc. 1st International Conference on Weblogs and Social Media (ICWSM 2007), Boulder, Colorado, U.S.A., March 2007. (poster) Conference Site

57. Hiroyuki Toda, Ko Fujimura, Ryoji Kataoka, and Hiroyuki Kitagawa, "Topic Structure Mining using PageRank? without Hyperlinks", Proc. 9th International Conference on Asian Digital Libraries (ICADL 2006), LNCS 4312, pp 151-162, Kyoto, Japan, November 2006. Springer

58. Hiroyuki Toda, Ryoji Kataoka, and Hiroyuki Kitagawa, "Topic Structure Mining for Document Sets using Graph-Based Analysis", Proc. 17th International Conference on Database and Expert Systems Applications (DEXA 2006), LNCS 4080, pp 327-337, Krakow, Poland, September 2006. Springer

59. Ko Fujimura, Hiroyuki Toda, Takafumi Inoue, Nobuaki Hiroshima, RyojiKataoka?, Masayuki Sugizaki, "BLOGRANGER - A Multi-faceted Blog Search Engine", Proc. 3rd Annual Workshop on the Weblogging Ecosystem: Aggregation, Analysis and Dynamics (WWE2006), Edinburgh, UK, May 2006. Conference Site

60. Hiroyuki Toda, and Ryoji Kataoka, "A search result clustering method using informatively named entities", Proc. 7th ACM International Workshop on Web Information and Data Management (WIDM 2005), pp 81-86, Bremen, Germany, November 2005. ACM

61. Hiroyuki Toda, and Ryoji Kataoka, "A clustering method for news articles retrieval system", Proc. 14th international conference on World Wide Web (Special interest tracks and posters) (WWW2005), Chiba, Japan, pp. 988-989, May 2005.(poster) Conference Site

62. Hiroyuki Toda, Mitsutoshi Nagahama, Hidekazu Nakawatase, and Ryoji Kataoka, "A Label-Based Navigation Method using Informatively Named Entities", Proc. 1st ECML/PKDD International Workshop on Knowledge Discovery in Data Streams, Pisa, Italy, pp 99-100, September 2004.(poster)

63. Hiroyuki Toda, Toshifumi Enomoto, and Tetsuji Satoh, "Goal-Oriented Information Retrieval Using Feedback from Users", Proc. 2nd International Conference on Web-Age Information Management (WAIM 2001), LNCS 2118 pp 72-79, Xian, China, July 2001. Springer

Journal Articles

1. Yuya Hikima, Yasunori Akagi, Masahiro Kohjima, Takeshi Kurashima, and Hiroyuki Toda, "Price and Time Proposal Optimization for Ride-Hailing Services Based on Individual Utilities", Transactions of the Japanese Society for Artificial Intelligence, Vol. 38, Issue 1, Page C-M13_1-12, January 2023. J-STAGE

2. Yasunori Akagi, Naoki Marumo, Hideaki Kim, Takeshi Kurashima, and Hiroyuki Toda, "MAP inference algorithms without approximation for collective graphical models on path graphs via discrete difference of convex algorithm", Machine Learning, December 2022. Springer

3. Maya Okawa, Tomoharu Iwata, Yusuke Tanaka, Takeshi Kurashima, Hiroyuki Toda, and Hisashi Kashima, "Context-aware spatio-temporal event prediction via convolutional Hawkes processes", Machine Learning, Vol. 111, Issue 8, pp.2929-2950, August 2022. Springer

4. Shuhei Yamamoto, Takeshi Kurashima, and Hiroyuki Toda, "Classifying Near-Miss Traffic Incidents through Video, Sensor, and Object Features", IEICE Transactions on Information and Systems, Vol. E105-D, No. 2, pp.377-386, February 2022. J-STAGE

5. Yusuke Tanaka, Tomoharu Iwata, Takeshi Kurashima, Hiroyuki Toda, Naonori Ueda, and Toshiyuki Tanaka, "Time-delayed Collective Flow Diffusion Models for Inferring Latent People Flow from Aggregated Data at Limited Locations", Artificial Intelligence, Vol. 292, 103430, Mar. 2021. Publisher's site

6. Noriko Yokoyama, Msasahiro Kohjima, Tatsushi Matsubayashi, and Hiroyuki Toda, "Parallel Sequential Random Embedding Bayesian Optimization", SN Computer Science, Vol.2, No.3, Nov. 2020.

7. Maya Okawa, Yusuke Tanaka, Takeshi Kurashima, Hiroyuki Toda, and Tomohiro Yamada, "Marked Temporal Point Processes for Trip Demand Prediction in Bike Sharing Systems", IEICE Transactions on Information and Systems, Vol. E102-D, No. 9, pp.1635-1643, September 2019. J-STAGE

8. Jun Suzuki, Yoshihiko Suhara, Hiroyuki Toda, Kyosuke Nishida, "Personalized Visited-POI Assignment to Individual Raw GPS Trajectories", ACM Transactions on Spatial Algorithms and Systems, Vol.5, Issue 3, Article Number 16, September, 2019. arXiv

9. Takuya Nishimura, Kyosuke Nishida, Hiroyuki Toda, and Hiroshi Sawada, "Social media knows what road it is: quantifying road characteristics with geo-tagged posts," Social Network Analysis and Mining, Springer, Vol. 8, Issue 17, Dec. 2017.

10. Yuki Endo, Hiroyuki Toda, Kyosuke Nishida, Jotaro Ikedo, "Classifying spatial trajectories using representation learning," International Journal of Data Science and Analytics, Jul. 2016.

11. Makoto Nakatsuji, Hiroyuki Toda, Hiroshi Sawada, Jinguang Zheng, and James A. Hendler, "Semantic sensitive tensor factorization," Artificial Intelligence, Vol. 230, pp. 224-245, 2016.

12. Masaya Murata, Hiroyuki Toda, Yumiko Matsuura, Ryoji Kataoka, "Access Concentration Detection in Click Logs to Improve Mobile Web-IR", Information Sciences, Vol. 179, Issue 12, pp.1859-1869, May 2009.

13. Hiroyuki Toda, Ryoji Kataoka, and Masahiro Oku, "Search Result Clustering using Informatively Named Entities", International Journal of Human-Computer Interaction, Vol. 23, No. 1-2, pp. 3-23, July 2007.

Conference Papers (Non-refereed) 

1. Hiroyuki Toda, Norihito Yasuda, Yumiko Matsuura, Ryoji Kataoka, "Incorporating place name extents into Geo-IR ranking", NSF SYmposium: Semantic Knowledge Discovery, Organization and Use, New York, NY, USA, November, 14-15, 2008.

2. Hiroyuki Toda, and Ryoji Kataoka, "Search Result Clustering Method at NTCIR-5 Web Query Expansion Subtask", Proc. 5th NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access(NTCIR-5), Tokyo, Japan, December 2005. PDF

Others

1. Yumiko Matsuura, Hiroyuki Toda, Momoko Nakatani, Takeshi Kurashima, and Harumi Saito, "User Experience Method for Deeper Understanding People’s Values to Design and Change Their Behavior," NTT Technical Review, Vol.18, No.3, Mar. 2020. Publisher's Site

2. Hiroyuki Toda, Shuhei Yamamoto, and Takuya Nishimura, "Spatio-temporal Activity Recognition Technology to Achieve Proactive Navigation," NTT Technical Review, Vol.15, No.8, Aug. 2017. Publisher's Site

3. Ryoji Kataoka, Hiroyuki Toda, Yukio Uematsu, Ko Fujimura, Katsuji Bessho, and Shuichi Nishioka, "Navigational Information Retrieval Technologies that Help Users Reach the Desired Information", NTT Technical Review, Vol.4 No.8, Augut 2006. Publisher's Site