Jeffrey Chan

2026

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Verifiable User Simulation for Search and Recommendation Systems.
Chenglong Ma|Xinye Wanyan|Danula Hettiachchi|Ziqi Xu|Yongli Ren|Jeffrey Chan
Proceedings of the 49th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2026, MelbourneVICAustralia, July 20-24, 2026
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Task-Aware Automated User Profile Generation for Recommendation Simulation Using Large Language Models.
Xinye Wanyan|Jiao Li|Chenglong Ma|Danula Hettiachchi|Jiao Li|Xing Xu|Chenglong Ma|Danula Hettiachchi|Xing Xu|Wei Yu|Ziqi Xu|Wei Yu|Ziqi Xu|Fumin Shen|Jeffrey Chan|Fumin Shen|Jeffrey Chan
Proceedings of the 49th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2026, MelbourneVICAustralia, July 20-24, 2026
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Mitigating Bias in Large Language Model Based Question Answering through Causal Front Door Prompting.
Steven M. Beitzel|Ellen M. Voorhees|Yaqi Yang|Ziqi Xu|Ellen M. Voorhees|Yaqi Yang|Jie Li|Eric C. Jensen|Ziqi Xu|Steven M. Beitzel|Chenglong Ma|Abdur Chowdhury|Jie Li|Eric C. Jensen|Jeffrey Chan|David A. Grossman|Chenglong Ma|Abdur Chowdhury|Ophir Frieder|Mark Sanderson|Jeffrey Chan|David A. Grossman|Mark Sanderson|Ophir Frieder|Xin Zheng|Yongli Ren
Proceedings of the 49th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2026, MelbourneVICAustralia, July 20-24, 2026
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Diversity-Augmented Negative Sampling for Implicit Collaborative Filtering.
Yueqing Xuan|Kacper Sokol|Mark Sanderson|Jeffrey Chan
Proceedings of the ACM Web Conference 2026, WWW 2026, Dubai, United Arab Emirates, originally scheduled for April 13-17, 2026, rescheduled for June 29 - July 3, 2026.

2025

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Temporal-Aware User Behaviour Simulation with Large Language Models for Recommender Systems.
Xinye Wanyan|Danula Hettiachchi|Chenglong Ma|Ziqi Xu|Jeffrey Chan
Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025
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Evaluating and Addressing Fairness Across User Groups in Negative Sampling for Recommender Systems.
Yueqing Xuan|Kacper Sokol|Mark Sanderson|Jeffrey Chan
Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025
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PUB: An LLM-Enhanced Personality-Driven User Behaviour Simulator for Recommender System Evaluation.
Chenglong Ma|Ziqi Xu|Yongli Ren|Danula Hettiachchi|Jeffrey Chan
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2025, Padua, Italy, July 13-18, 2025
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Towards Better Evaluation of Recommendation Algorithms with Bi-directional Item Response Theory.
Ziqi Xu|Chenglong Ma|Yongli Ren|Jeffrey Chan|Wei Shao|Feng Xia
Companion Proceedings of the ACM on Web Conference 2025, WWW 2025, Sydney, NSW, Australia, 28 April 2025 - 2 May 2025

2019

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Irony detection via sentiment-based transfer learning.
Shiwei Zhang|Xiuzhen Zhang|Jeffrey Chan|Paolo Rosso
Information Processing and Management 2019 Volume 56 Issue 5

2018

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Travel Itinerary Recommendations with Must-see Points-of-Interest.
Kendall Taylor|Kwan Hui Lim|Jeffrey Chan
Companion Proceedings of the The Web Conference 2018, WWW 2018, Lyon , France, April 23-27, 2018

2017

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A Word-Character Convolutional Neural Network for Language-Agnostic Twitter Sentiment Analysis.
Shiwei Zhang|Xiuzhen Zhang|Jeffrey Chan
Proceedings of the 22nd Australasian Document Computing Symposium, ADCS 2017, Brisbane, QLD, Australia, December 7-8, 2017
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Personalized Itinerary Recommendation with Queuing Time Awareness.
Jeffrey Chan|Kwan Hui Lim|Min Zhang|Jeffrey Chan|Min Zhang|Shanika Karunasekera|Christopher Leckie
Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Shinjuku, Tokyo, Japan, August 7-11, 2017

2016

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Improving Personalized Trip Recommendation by Avoiding Crowds.
Xiaoting Wang|Christopher Leckie|Jeffrey Chan|Kwan Hui Lim|Tharshan Vaithianathan
Proceedings of the 25th ACM International Conference on Information and Knowledge Management, CIKM 2016, Indianapolis, IN, USA, October 24-28, 2016

2015

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Detecting Location-Centric Communities Using Social-Spatial Links with Temporal Constraints.
Kwan Hui Lim|Jeffrey Chan|Christopher Leckie|Shanika Karunasekera
Advances in Information Retrieval - 37th European Conference on IR Research, ECIR 2015, Vienna, Austria, March 29 - April 2, 2015. Proceedings

2013

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A time decoupling approach for studying forum dynamics.
Andrey Kan|Jeffrey Chan|Conor Hayes|Bernie Hogan|James Bailey|Christopher Leckie
World Wide Web (WWW) 2013 Volume 16 Issue 5-6
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Discovering latent blockmodels in sparse and noisy graphs using non-negative matrix factorisation.
Jeffrey Chan|Wei Liu|Andrey Kan|Christopher Leckie|James Bailey|Kotagiri Ramamohanarao
22nd ACM International Conference on Information and Knowledge Management, CIKM'13, San Francisco, CA, USA, October 27 - November 1, 2013

2012

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Utilizing common substructures to speedup tensor factorization for mining dynamic graphs.
Wei Liu|Jeffrey Chan|James Bailey|Christopher Leckie|Kotagiri Ramamohanarao
21st ACM International Conference on Information and Knowledge Management, CIKM'12, Maui, HI, USA, October 29 - November 02, 2012
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On compressing weighted time-evolving graphs.
Wei Liu|Andrey Kan|Jeffrey Chan|James Bailey|Christopher Leckie|Jian Pei|Kotagiri Ramamohanarao
21st ACM International Conference on Information and Knowledge Management, CIKM'12, Maui, HI, USA, October 29 - November 02, 2012