I am currently a lecturer at the University of Queensland, where I conduct research in the field of Information Retrieval. My research focuses on efficient and effective representations for large-scale search engines, including indexing, compression, and retrieval. I am also interested in understanding how to measure improvements in the end-to-end search pipeline, including system-oriented effectiveness measurements and user behaviour analysis. I have a broad interest in empirical experimentation, operating systems, data structures, and algorithms.
Projects
Publications (64)
2026
5 publications- Fast, Compact, Immediate-Access Indexing for Learned Sparse Retrieval Systems
Lecture notes in computer science · 2026
- Practical, Efficient, In-Memory Inverted Indexes
Lecture notes in computer science · 2026
- Revisiting Human-vs-LLM Judgments Using the TREC Podcast Track
Lecture notes in computer science · 2026
- Simple Techniques for Efficient Top-k Batch Query Processing
Information Retrieval Research · 2026
- When LLM Judges Inflate Scores: Exploring Overrating in Relevance Assessment
arXiv (Cornell University) · 2026
2025
9 publications- Natural language processing for the legal domain: A survey of tasks, datasets, models, and challenges
ACM Computing Surveys 58 (6), 1-37 · 2025
- Report from the 4th Strategic Workshop on Information Retrieval in Lorne (SWIRL 2025)
ACM SIGIR Forum 59 (1), 1-68 · 2025
- Approximate Bag-of-Words Top-k Corpus Graphs
Lecture notes in computer science · 2025
- Batched k-Mer Lookup on the Spectral Burrows-Wheeler Transform
Society for Industrial and Applied Mathematics eBooks · 2025
- Examining the Impact of Transcript Variation on Podcast Search and Re-ranking
Lecture notes in computer science · 2025
- A Flexible Resource for Top-Weighted Comparisons Between Sets and Rankings
International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · 2025
- Efficient In-Memory Inverted Indexes: Theory and Practice
International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · 2025
- Empirical Asymptotic Growth of Dynamic Pruning Mechanisms
Proceedings of the 2025 Annual International ACM SIGIR Conference on · 2025
- Reassessing Collaborative Writing Theories and Frameworks in the Age of LLMs: What Still Applies and What We Must Leave Behind
arXiv (Cornell University) · 2025
2024
8 publications- Boosting search performance using query variations
Figshare · 2024
- What do Users Really Ask Large Language Models? An Initial Log Analysis of Google Bard Interactions in the Wild
International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · 2024
- Rank-Biased Quality Measurement for Sets and Rankings
Annual International ACM SIGIR Conference on Research and Development in Information Retrieval in the Asia Pacific Region (SIGIR-AP) · 2024
- ReNeuIR at SIGIR 2024: The Third Workshop on Reaching Efficiency in Neural Information Retrieval
International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · 2024
- Revisiting Document Expansion and Filtering for Effective First-Stage Retrieval
International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · 2024
- Re-evaluating the Command-and-Control Paradigm in Conversational Search Interactions
ACM International Conference on Information and Knowledge Management (CIKM) · 2024
- What do Users Really Ask Large Language Models?
Proceedings of the SIGIR’24, July 14–18 · 2024
- How much freedom does an effectiveness metric really have?
Journal of the Association for Information Science and Technology · 2024
2023
8 publications- ReNeuIR at SIGIR 2023: The Second Workshop on Reaching Efficiency in Neural Information Retrieval
International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · 2023
- Efficient immediate-access dynamic indexing
Information Processing & Management · 2023
- A proposed efficiency benchmark for modern information retrieval systems
ReNeuIR at SIGIR 2024: the third workshop on reaching efficiency in neural · 2023
- Index-Based Batch Query Processing Revisited
Lecture notes in computer science · 2023
- Exploring the Representation Power of SPLADE Models
ACM SIGIR International Conference on Theory of Information Retrieval (ICTIR) · 2023
- ADCS’22: Proceedings of the 26th Australasian Document Computing Symposium
2023
- Lossy Compression Options for Dense Index Retention
Annual International ACM SIGIR Conference on Research and Development in Information Retrieval in the Asia Pacific Region (SIGIR-AP) · 2023
- Profiling and Visualizing Dynamic Pruning Algorithms
International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · 2023
2022
12 publications- Faster Learned Sparse Retrieval with Guided Traversal
International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · 2022
- A Flexible Framework for Offline Effectiveness Metrics
International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · 2022
- Accelerating Learned Sparse Indexes Via Term Impact Decomposition
2022
- Efficient Document-at-a-Time and Score-at-a-Time Query Evaluation for Learned Sparse Representations
ACM Transactions on Information Systems · 2022
- Ioqp: A simple impact-ordered query processor written in rust
CEUR Workshop Proceedings 3480, 22-34 · 2022
- Tradeoff Options for Bipartite Graph Partitioning
IEEE Transactions on Knowledge and Data Engineering · 2022
- BUM at CheckThat! 2022: a composite deep learning approach to fake news detection using evidence retrieval
CEUR Workshop Proceedings 3180, 564-572 · 2022
- Efficient query processing techniques for next-page retrieval
Information Retrieval · 2022
- Immediate-Access Indexing Using Space-Efficient Extensible Arrays
Australasian Document Computing Symposium · 2022
- A Common Framework for Exploring Document-at-a-Time and Score-at-a-Time Retrieval Methods
International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · 2022
- Greetings from the ADCS 2022 Chairs
ACM International Conference Proceeding Series, III-IV · 2022
- Report on the 25th Australasian Document Computing Symposium (ADCS 2021)
ACM SIGIR Forum · 2022
2021
12 publications- Wacky Weights in Learned Sparse Representations and the Revenge of Score-at-a-Time Query Evaluation
arXiv (Cornell University) · 2021
- ERR is not C/W/L: Exploring the Relationship Between Expected Reciprocal Rank and Other Metrics
ACM SIGIR International Conference on Theory of Information Retrieval (ICTIR) · 2021
- Faster Index Reordering with Bipartite Graph Partitioning
International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · 2021
- Different keystrokes for different folks: visualizing crowdworker querying behavior
Proceedings of the 2021 Conference on Human Information Interaction and · 2021
- Modality Effects When Simulating User Querying Tasks
ACM SIGIR International Conference on Theory of Information Retrieval (ICTIR) · 2021
- On the Separation of Logical and Physical Ranking Models for Text Retrieval Applications.
2021
- A Sensitivity Analysis of the MSMARCO Passage Collection
arXiv (Cornell University) · 2021
- Anytime Ranking on Document-Ordered Indexes
ACM Transactions on Information Systems · 2021
- Conferences, journals, preprints, and reviewer expectations
ACM SIGIR Forum · 2021
- Cost-Effective Updating of Distributed Reordered Indexes
Australasian Document Computing Symposium · 2021
- Greetings from the ADCS 2021 General Chairs
ACM International Conference Proceeding Series · 2021
- Proceedings of the 25th Australasian Document Computing Symposium
ACM · 2021
2020
6 publications- CC-News-En: A large English news corpus
Proceedings of the 29th ACM international conference on information · 2020
- CC-News-En
Proceedings of the ... ACM International Conference on Information & Knowledge Management · 2020
- Supporting Interoperability Between Open-Source Search Engines with the Common Index File Format
International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · 2020
- Efficiency Implications of Term Weighting for Passage Retrieval
International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · 2020
- Examining the Additivity of Top-k Query Processing Innovations
Proceedings of the ... ACM International Conference on Information & Knowledge Management · 2020
- Managing tail latency in large scale information retrieval systems
ACM SIGIR Forum · 2020
2019
4 publications- Exploring User Behavior in Email Re-Finding Tasks
2019
- PISA: Performant indexes and search for academia
RMIT Research Repository (RMIT University Library) · 2019
- Compressing Inverted Indexes with Recursive Graph Bisection: A Reproducibility Study
Lecture notes in computer science · 2019
- Accelerated Query Processing Via Similarity Score Prediction
International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · 2019
