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2026

Conference Publication

LLMs Encode Relevance as a Layer-Wise Cross-Lingual Signal

Bernardelle, Pietro, Mohtadi, Samaneh, Civelli, Stefano, Mackenzie, Joel and Demartini, Gianluca (2026). LLMs Encode Relevance as a Layer-Wise Cross-Lingual Signal. New York, NY, USA: ACM. doi: 10.1145/3799682.3841097

LLMs Encode Relevance as a Layer-Wise Cross-Lingual Signal

2026

Conference Publication

Persona Conditioning as an Assessor-Sensitivity Probe for LLM-Based IR Evaluation

Mohtadi, Samaneh, Bernardelle, Pietro, Mackenzie, Joel and Demartini, Gianluca (2026). Persona Conditioning as an Assessor-Sensitivity Probe for LLM-Based IR Evaluation. New York, NY, USA: ACM. doi: 10.1145/3799682.3841131

Persona Conditioning as an Assessor-Sensitivity Probe for LLM-Based IR Evaluation

2026

Conference Publication

How variability influences podcast search: queries, transcriptions, and judges

Mansour, Watheq, Culpepper, J. Shane, Yates, Andrew and Mackenzie, Joel (2026). How variability influences podcast search: queries, transcriptions, and judges. 49th International ACM SIGIR Conference (SIGIR 2026), Melbourne, VIC, Australia, 20–24 July, 2026. New York, NY, United States: ACM. doi: 10.1145/3805712.3809668

How variability influences podcast search: queries, transcriptions, and judges

2026

Conference Publication

When LLM judges inflate scores: exploring overrating in relevance assessment

Yu, Chuting, Li, Hang, Zuccon, Guido, Mackenzie, Joel and Leelanupab, Teerapong (2026). When LLM Judges Inflate Scores: Exploring Overrating in Relevance Assessment. New York, NY, USA: ACM. doi: 10.1145/3805712.3809905

When LLM judges inflate scores: exploring overrating in relevance assessment

2026

Conference Publication

LLM-UP: SIGIR 2026 workshop on LLM-powered user profiling for search and recommendation

Yin, Hongzhi, Yuan, Wei, Zhang, Yi, Mackenzie, Joel, Nguyen, Quoc Viet Hung, Zhao, Wayne Xin, Li, Yong and Yao, Lina (2026). LLM-UP: SIGIR 2026 Workshop on LLM-powered User Profiling for Search and Recommendation. New York, NY, USA: ACM. doi: 10.1145/3805712.3808652

LLM-UP: SIGIR 2026 workshop on LLM-powered user profiling for search and recommendation

2026

Journal Article

Simple techniques for efficient top-k batch query processing

Li, Zhixuan and Mackenzie, Joel (2026). Simple techniques for efficient top-k batch query processing. Information Retrieval Research, 2 (1), 35-58. doi: 10.54195/irrj.23893

Simple techniques for efficient top-k batch query processing

2026

Conference Publication

Practical, efficient, in-memory inverted indexes

Mackenzie, Joel, MacAvaney, Sean, Mallia, Antonio and Siedlaczek, Michał (2026). Practical, efficient, in-memory inverted indexes. The 48th European Conference on Information Retrieval (ECIR 2026), Delft, Netherlands, 29 March - 2 April, 2026. Heidelberg, Germany: Springer. doi: 10.1007/978-3-032-21321-1_1

Practical, efficient, in-memory inverted indexes

2026

Conference Publication

Revisiting human-vs-LLM judgments using the TREC podcast track

Mansour, Watheq, Shane Culpepper, J., Mackenzie, Joel and Yates, Andrew (2026). Revisiting human-vs-LLM judgments using the TREC podcast track. 48th European Conference on Information Retrieval, ECIR 2026, Delft, The Netherlands, 29 March - 2 April 2026. Heidelberg, Germany: Springer. doi: 10.1007/978-3-032-21300-6_34

Revisiting human-vs-LLM judgments using the TREC podcast track

2026

Conference Publication

Fast, compact, immediate-access indexing for learned sparse retrieval systems

Rule, Billy and Mackenzie, Joel (2026). Fast, compact, immediate-access indexing for learned sparse retrieval systems. the 48th European Conference on Information Retrieval, held in Delft, Netherlands, from, Delft, Netherlands, 29 March - 2 April, 2026. Heidelberg, Germany: Springer. doi: 10.1007/978-3-032-21324-2_1

Fast, compact, immediate-access indexing for learned sparse retrieval systems

2025

Conference Publication

Empirical asymptotic growth of dynamic pruning mechanisms

Gallagher, Luke, Mackenzie, Joel and Moffat, Alistair (2025). Empirical asymptotic growth of dynamic pruning mechanisms. 2025 Annual International ACM SIGIR Conference on Research and Development in Information Retrieval in the Asia Pacific Region, Xi'an, China, 7-10 December 2025. New York, NY, United States: ACM. doi: 10.1145/3767695.3769477

Empirical asymptotic growth of dynamic pruning mechanisms

2025

Journal Article

Natural language processing for the legal domain: a survey of tasks, datasets, models, and challenges

Ariai, Farid, Mackenzie, Joel and Demartini, Gianluca (2025). Natural language processing for the legal domain: a survey of tasks, datasets, models, and challenges. ACM Computing Surveys, 58 (6) 163, 1-37. doi: 10.1145/3777009

Natural language processing for the legal domain: a survey of tasks, datasets, models, and challenges

2025

Conference Publication

A flexible resource for top-weighted comparisons between sets and rankings

Moffat, Alistair, Mackenzie, Joel, Mallia, Antonio and Petri, Matthias (2025). A flexible resource for top-weighted comparisons between sets and rankings. 48th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (ACM SIGIR 2025), Padua, Italy, 13-18 July 2025. New York, NY, United States: Association for Computing Machinery. doi: 10.1145/3726302.3730306

A flexible resource for top-weighted comparisons between sets and rankings

2025

Conference Publication

Efficient in-memory inverted indexes: theory and practice

Mackenzie, Joel, MacAvaney, Sean, Mallia, Antonio and Siedlaczek, Michał (2025). Efficient in-memory inverted indexes: theory and practice. 48th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (ACM SIGIR 2025), Padua, Italy, 13-18 July 2025. New York, NY, United States: Association for Computing Machinery. doi: 10.1145/3726302.3731688

Efficient in-memory inverted indexes: theory and practice

2025

Journal Article

Report from the 4th Strategic Workshop on Information Retrieval in Lorne (SWIRL 2025)

Trippas, Johanne R., Culpepper, J. Shane, Aliannejadi, Mohammad, Allan, James, Amigó, Enrique, Arguello, Jaime, Azzopardi, Leif, Bailey, Peter, Callan, Jamie, Capra, Rob, Craswell, Nick, Croft, Bruce, Dalton, Jeff, Demartini, Gianluca, Dietz, Laura, Dou, Zhicheng, Eickhoff, Carsten, Ekstrand, Michael, Ferro, Nicola, Fuhr, Norbert, Glowacka, Dorota, Hasibi, Faegheh, Hettiachchi, Danula, Jones, Rosie, Kamps, Jaap, Kando, Noriko, Karimi, Sarvnaz, Kato, Makoto P., Koopman, Bevan ... Zuccon, Guido (2025). Report from the 4th Strategic Workshop on Information Retrieval in Lorne (SWIRL 2025). ACM SIGIR Forum, 59 (1), 1-68. doi: 10.1145/3769733.3769739

Report from the 4th Strategic Workshop on Information Retrieval in Lorne (SWIRL 2025)

2025

Conference Publication

Examining the Impact of Transcript Variation on Podcast Search and Re-ranking

Mansour, Watheq, Culpepper, J. Shane and Mackenzie, Joel (2025). Examining the Impact of Transcript Variation on Podcast Search and Re-ranking. 47th European Conference on Information Retrieval, ECIR 2025, Lucca, Italy, 6–10 April 2025. Cham, Switzerland: Springer. doi: 10.1007/978-3-031-88714-7_9

Examining the Impact of Transcript Variation on Podcast Search and Re-ranking

2025

Conference Publication

Approximate Bag-of-Words Top-k Corpus Graphs

Dunn, Lachlan, Gallagher, Luke and Mackenzie, Joel (2025). Approximate Bag-of-Words Top-k Corpus Graphs. 47th European Conference on Information Retrieval, ECIR 2025, Lucca, Italy, 6–10 April 2025. Cham, Switzerland: Springer. doi: 10.1007/978-3-031-88714-7_15

Approximate Bag-of-Words Top-k Corpus Graphs

2025

Conference Publication

Batched k-mer lookup on the Spectral Burrows-Wheeler Transform

Alanko, Jarno N., Biagi, Elena, Mackenzie, Joel and Puglisi, Simon J. (2025). Batched k-mer lookup on the Spectral Burrows-Wheeler Transform. SIAM Symposium on Algorithm Engineering and Experiments (ALENEX25), New Orleans, United States, 12-13 January 2025. Philadelphia, PA, United States: Society for Industrial and Applied Mathematics Publications. doi: 10.1137/1.9781611978339.8

Batched k-mer lookup on the Spectral Burrows-Wheeler Transform

2024

Conference Publication

Rank-biased quality measurement for sets and rankings

Moffat, Alistair, Mackenzie, Joel, Mallia, Antonio and Petri, Matthias (2024). Rank-biased quality measurement for sets and rankings. 2024 Annual International ACM SIGIR Conference on Research and Development in Information Retrieval in the Asia Pacific Region (SIGIR-AP ’24), Tokyo, Japan, 9-12 December 2024. New York, United States: Association for Computing Machinery. doi: 10.1145/3673791.3698405

Rank-biased quality measurement for sets and rankings

2024

Conference Publication

Re-evaluating the command-and-control paradigm in conversational search interactions

Trippas, Johanne R., Gallagher, Luke and Mackenzie, Joel (2024). Re-evaluating the command-and-control paradigm in conversational search interactions. 33rd ACM International Conference on Information and Knowledge Management (CIKM), Boise, ID, United States, 21-25 October 2024. New York, United States: Association for Computing Machinery. doi: 10.1145/3627673.3679588

Re-evaluating the command-and-control paradigm in conversational search interactions

2024

Conference Publication

Revisiting document expansion and filtering for effective first-stage retrieval

Mansour, Watheq, Zhuang, Shengyao, Zuccon, Guido and Mackenzie, Joel (2024). Revisiting document expansion and filtering for effective first-stage retrieval. SIGIR '24, Washington, DC, United States, 14-18 July 2024. New York, NY, United States: ACM. doi: 10.1145/3626772.3657850

Revisiting document expansion and filtering for effective first-stage retrieval