Information Retrieval

Information Theory

The definition and measurement of information is fundamental to methods for information retrieval, text mining, and machine learning.

Privacy-Preserving Library Analytics

A local small-model system for interpretable analysis of library survey data while keeping sensitive institutional data under local control.

Retrieval Granularity as Evidence Design in Small-Model RAG Question Answering: A Diagnostic HotpotQA Study

A diagnostic HotpotQA study of how retrieval granularity shapes evidence recovery, answer quality, context budgets, and resource use for small-model RAG.

Beyond Big Black Box: Open Search and Personal AI

An invited talk on open search, personal AI, and distributed approaches to information discovery.

Search & Retrieval

Decentralized search and retrieval on the web scale. Efficiency, effectiveness, and scalability.

Studying the clustering paradox and scalability of search in highly distributed environments

We study decentralized searches in large-scale information networks and discover the phenomenon of Clustering Paradox, that is, how distributed system interconnect and cluster imposes a limit on search performance and scalability.