Search agents · 2026
SkimSearchAgent
A research library for deep-search agents, connecting retrieval, tools, agent workflows and reproducible evaluation.
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Information Retrieval · The University of Queensland
Research
Dr. Shuai Wang is a Research Fellow at ielab, The University of Queensland. He works on information retrieval, search agents, retrievers and rerankers, biomedical evidence search and efficient RAG systems, with papers at SIGIR, WSDM, WWW, ECIR, EMNLP and EACL. He completed his PhD at UQ in 2025 under the supervision of Prof. Guido Zuccon, A/Prof. Bevan Koopman and Dr. Harrisen Scells, and is Course Coordinator and Lecturer for INFS7410.
24 first or co-first author papers →Themes
Search agentsSearch agents and deep-research workflowsTask decomposition, Boolean retrieval, structured inspect cards, section-level fetching and tool-using agents.2 Publications · 3 ProjectsRetrievers and rerankersRetrievers and rerankers2D Matryoshka retrieval, diffusion retrievers, reasoning rerankers, federated search and reproducibility studies.14 Publications · 6 ProjectsBiomedical searchBiomedical evidence searchMeSH suggestion, screening prioritisation, Boolean query generation and seed-driven retrieval for systematic reviews.11 Publications · 2 ProjectsEfficient RAGEfficient RAG and LLM systemsContext embeddings, retrieval–generation interfaces, memory optimisation and more efficient inference pipelines.5 Publications · 3 ProjectsAgent memoryMemory for LLM agentsHow long-term memory for conversational agents should be built, retrieved and evaluated.1 Publication · 1 ProjectRobustness & securityRobustness and securityHow prompt-injection attacks travel through rankers and realistic RAG pipelines.2 Publications · 2 Projects
Projects
Search agents and deep-research workflows
2 Publications →
Search agents · 2026
Sieve: Search, Inspect, Fetch
Boolean search narrows the candidates, inspection exposes document structure, and fetch reads only the selected sections.
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Search agents · 2026
ITER: Interaction-Aware Retrieval
Agent search history conditions the query; document interactions provide the signals for training the retriever.
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Retrievers and rerankers
14 Publications →
Retrievers and rerankers · 2026
DiffRetriever
Parallel masked positions in a diffusion language model produce multiple representations for dense and sparse retrieval.
Retrievers and rerankers · 2026
Beyond Chunk-Then-Embed
A unified framework for comparing document segmentation and embedding strategies across retrieval tasks.
Retrievers and rerankers · 2024
LLMs for Stemming
Comparing stemming techniques and examining the promises and limitations of language models for stemming.
Biomedical evidence search
11 Publications →
Biomedical search · 2023
Natural-Language Queries for Screening
Generating natural-language queries from Boolean queries to improve systematic review screening prioritisation.
Efficient RAG and LLM systems
5 Publications →
Memory for LLM agents
1 Publication →
Agent memory · 2026
Reproducing LightMem
Comparing constructed long-term memories with retrieval over raw user turns under matched evaluation settings.
Robustness and security
2 Publications →
Robustness & security · 2026
Prompt Injection in Realistic RAG
Following prompt-injection attacks through retrieval, reranking and answer generation in realistic RAG settings.
Robustness & security · 2026
Prompt Injection against LLM Rankers
A reproducibility study examining the vulnerability of LLM rankers to prompt-injection attacks.
Background
Education
- 2025Doctor of Philosophy
The University of Queensland
Read my thesis ↗ - 2021Master of Engineering Science
The University of Queensland - 2019Bachelor of Science
The University of Western Australia
Experience
- 2026–presentResearch Fellow (Level B)
ielab, The University of Queensland
Supervisor: Prof. Guido Zuccon - 2025–2026Postdoctoral Research Fellow (Level A)
ielab, The University of Queensland
Supervisor: Prof. Guido Zuccon - Feb–Jul 2024 (5 months)Research Intern
Naver Labs Europe, Grenoble
Co-led COCOM from method design to the WSDM 2025 paper; 5.69× faster RAG inference at near-baseline quality. - 2022–2025Teaching Assistant
The University of Queensland
INFS7205, INFS7410, DATA7901 and DATA7902/7903. - Jul–Sep 2021Research Assistant
The University of Queensland
TREC participation and neural information retrieval projects.
Professional service
- Publicity Chair, SIGIR 2026 (Melbourne | Naarm)
- Queensland Satellite Chair, SIGIR-AP 2025
Journals
- ACM Transactions on Information Systems (TOIS)
- Journal of Data and Information Quality
Programme committees
- SIGIR 2024, 2025, 2026
- ECIR 2024, 2025
- WSDM 2026
- ICTIR 2023
- ACL Rolling Review 2026