Luke Gallagher

programming / email

Background is information retrieval on efficient document retrieval systems. Broadly, this includes indexing techniques, query processing and learning methods for relevance ranking of search results.

Publications

• Approximate Bag-of-Words Top-k Corpus Graphs
  L. Dunn, L. Gallagher and J. Mackenzie. Proc. 47th European Conf. on Information Retrieval, 2025. pdf
• Re-evaluating the Command-and-Control Paradigm in Conversational Search Interactions
  J. R. Trippas, L. Gallagher, J. Mackenzie. Proc 33rd ACM Int. Conf. on Information and Knowledge Management, 2024. pdf
• What Do Users Really Ask Large Language Models?
  J. R. Trippas, S. F. D. Al Lawati, J. Mackenzie, L. Gallagher. Proc. 47th Ann. Int. ACM SIGIR Conf. on Research and Development in Information Retrieval, 2024. pdf
• Can Generative LLMs Create Query Variants for Test Collections?
  M. Alaofi, L. Gallagher, M. Sanderson, F. Scholer and P. Thomas. Proc. 46th Ann. Int. ACM SIGIR Conf. on Research and Development in Information Retrieval, 2023. pdf
• IOQP: A simple Impact-Ordered Query Processor written in Rust
  J. Mackenzie, M. Petri, L. Gallagher. Proc. 3rd Int. Conf. on Design of Experimental Search and Information Retrieval Systems, 2022. pdf
• Where Do Queries Come From?
  M. Alaofi, L. Gallagher, D. Mckay, L. L. Saling, M. Sanderson, F. Scholer, D. Spina, R. W. White. Proc 45th Int. ACM SIGIR Conf. on Research and Development in Information Retrieval, 2022. pdf
• Feature Extraction for Large-Scale Text Collections
  L. Gallagher, A. Mallia, J. S. Culpepper, T. Suel and B. B. Cambazoglu. Proc 29th ACM Int. Conf. on Information and Knowledge Management, 2020. pdf
• Efficiency Implications of Term Weighting for Passage Retrieval
  J. Mackenzie, Z. Dai, L. Gallagher and J. Callan. Proc 43rd Int. ACM SIGIR Conf. on Research and Development in Information Retrieval, 2020. pdf
• Joint Optimization of Cascade Ranking Models
  L. Gallagher, R-C. Chen, R. Blanco, and J. S. Culpepper. Proc. 12th Int. Conf. on Web Search and Data Mining, 2019. pdf
• Revisiting Spam Filtering in Web Search
  L. Gallagher, J. Mackenzie, J. S. Culpepper. Proc. 23rd Australasian Document Computing Symp., 2018. pdf
• RMIT at the TREC CORE Track
  R. Benham, L. Gallagher, J. Mackenzie, B. Liu, X. Lu, F. Scholer, A. Moffat, and J. S. Culpepper. Proc. 27th Text Retrieval Conf., 2018. pdf
• Towards Efficient and Effective Query Variant Generation
  R. Benham, J. S. Culpepper, L. Gallagher, X. Lu, and J. Mackenzie. Proc. 1st Int. Conf. on Design of Experimental Search and Information Retrieval Systems, 2018. pdf
• RMIT at the TREC CORE Track
  R. Benham, L. Gallagher, J. Mackenzie, T. T. Damessie, R-C. Chen, F. Scholer, A. Moffat, and J. S. Culpepper. Proc. 26th Text Retrieval Conf., 2017. pdf
• RMIT at the NTCIR We Want Web Track
  L. Gallagher, J. Mackenzie, R. Benham, R-C. Chen, F. Scholer, and J. S. Culpepper. Proc. 13th NTCIR Conf. Evaluation of Information Access Technologies, 2017. pdf
• Efficient Cost-Aware Cascade Ranking in Multi-Stage Retrieval
  R-C. Chen, L. Gallagher, R. Blanco, and J. S. Culpepper. Proc. 40th Int. ACM SIGIR Conf. on Research and Development in Information Retrieval, 2017. pdf

Professional Service

• TOIS, JASIST, Discover Computing (formerly IRJ)
• SIGIR 2019, 2020, 2022, 2023, 2024, 2025
• SIGIR-AP 2023, 2024
• WSDM 2022, 2023, 2024, 2026
• WebConf 2022, 2023
• ECIR 2020, 2024
• ReNuIR 2023, 2024
• ADCS 2018, 2021, 2022
• COLING 2022
• CIKM 2019, 2020
• NTCIR 2019