activity
20132026
most citedBoosting Search Performance Using Query Variations

28 citations · 151 across the 19 of their papers we have counts for

collaborators

19 papers

cs.IR2026

Revisiting Human-vs-LLM judgments using the TREC Podcast Track

Watheq Mansour, J. Shane Culpepper, Joel Mackenzie +1

Using large language models (LLMs) to annotate relevance is an increasingly important technique in the information retrieval community. While some studies demonstrate that LLMs can…

cs.IR2025★ 2 cited

The Effects of Demographic Instructions on LLM Personas

Angel Felipe Magnossão de Paula, J. Shane Culpepper, Alistair Moffat +3

Social media platforms must filter sexist content in compliance with governmental regulations. Current machine learning approaches can reliably detect sexism based on standardized…

cs.DB2024

Distinctiveness Maximization in Datasets Assemblage

Tingting Wang, Shixun Huang, Zhifeng Bao +3

In this paper, given a user's query set and budget, we aim to use the limited budget to help users assemble a set of datasets that can enrich a base dataset by introducing the maxi…

cs.DB2023★ 4 cited

A Simple Yet High-Performing On-disk Learned Index: Can We Have Our Cake and Eat it Too?

Hai Lan, Zhifeng Bao, J. Shane Culpepper +2

While in-memory learned indexes have shown promising performance as compared to B+-tree, most widely used databases in real applications still rely on disk-based operations. Based…

cs.DB2023★ 26 cited

Updatable Learned Indexes Meet Disk-Resident DBMS -- From Evaluations to Design Choices

Hai Lan, Zhifeng Bao, J. Shane Culpepper +1

Although many updatable learned indexes have been proposed in recent years, whether they can outperform traditional approaches on disk remains unknown. In this study, we revisit an…

cs.DB2021

Let Trajectories Speak Out the Traffic Bottlenecks

Hui Luo, Zhifeng Bao, Gao Cong +2

Traffic bottlenecks are a set of road segments that have an unacceptable level of traffic caused by a poor balance between road capacity and traffic volume. A huge volume of trajec…