Christopher Leckie

2026

HierCon: Hierarchical Contrastive Attention for Audio Deepfake Detection.

Zhili Nicholas Liang|Soyeon Caren Han|Qizhou Wang|Christopher Leckie

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

SupLID: Geometrical Guidance for Out-of-Distribution Detection in Semantic Segmentation.

Nimeshika Udayangani|Sarah M. Erfani|Christopher Leckie

Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025

2021

Propagation2Vec: Embedding partial propagation networks for explainable fake news early detection.

Amila Silva|Yi Han|Ling Luo|Shanika Karunasekera|Christopher Leckie

Information Processing and Management 2021 Volume 58 Issue 5

Scalable Contrast Pattern Mining over Data Streams.

Elaheh Alipour Chavary|Sarah M. Erfani|Christopher Leckie

CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021

2020

METEOR: Learning Memory and Time Efficient Representations from Multi-modal Data Streams.

Amila Silva|Shanika Karunasekera|Christopher Leckie|Ling Luo

CIKM '20: The 29th ACM International Conference on Information and Knowledge Management, Virtual Event, Ireland, October 19-23, 2020

Embedding Partial Propagation Network for Fake News Early Detection.

Amila Silva|Yi Han|Ling Luo|Shanika Karunasekera|Christopher Leckie

Proceedings of the CIKM 2020 Workshops co-located with 29th ACM International Conference on Information and Knowledge Management (CIKM 2020), Galway, Ireland, October 19-23, 2020.

2019

Multi-scale Trajectory Clustering to Identify Corridors in Mobile Networks.

Li Li|Sarah M. Erfani|Chien Aun Chan|Christopher Leckie

Proceedings of the 28th ACM International Conference on Information and Knowledge Management, CIKM 2019, Beijing, China, November 3-7, 2019.

2017

Summarizing Significant Changes in Network Traffic Using Contrast Pattern Mining.

Elaheh Alipour Chavary|Sarah M. Erfani|Christopher Leckie

Proceedings of the 2017 ACM on Conference on Information and Knowledge Management, CIKM 2017, Singapore, November 06 - 10, 2017

Personalized Itinerary Recommendation with Queuing Time Awareness.

Kwan Hui Lim|Jeffrey Chan|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

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

Scalable Local-Recoding Anonymization using Locality Sensitive Hashing for Big Data Privacy Preservation.

Xuyun Zhang|Christopher Leckie|Wanchun Dou|Jinjun Chen|Kotagiri Ramamohanarao|Zoran Salcic

Proceedings of the 25th ACM International Conference on Information and Knowledge Management, CIKM 2016, Indianapolis, IN, USA, October 24-28, 2016

2015

Profiling Pedestrian Distribution and Anomaly Detection in a Dynamic Environment.

Minh Tuan Doan|Sutharshan Rajasegarar|Mahsa Salehi|Masud Moshtaghi|Christopher Leckie

Proceedings of the 24th ACM International Conference on Information and Knowledge Management, CIKM 2015, Melbourne, VIC, Australia, October 19 - 23, 2015

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

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

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

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

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