activity
20152025
most citedDEEProtect: Enabling Inference-based Access Control on Mobile Sensing Applications

18 citations · 35 across the 10 of their papers we have counts for

collaborators

12 papers

cs.CL2025

GneissWeb: Preparing High Quality Data for LLMs at Scale

Hajar Emami Gohari, Swanand Ravindra Kadhe, Syed Yousaf Shah +29

Data quantity and quality play a vital role in determining the performance of Large Language Models (LLMs). High-quality data, in particular, can significantly boost the LLM's abil…

cs.CL2023

Federated Learning for Semantic Parsing: Task Formulation, Evaluation Setup, New Algorithms

Tianshu Zhang, Changchang Liu, Wei-Han Lee +2

This paper studies a new task of federated learning (FL) for semantic parsing, where multiple clients collaboratively train one global model without sharing their semantic parsing…

cs.LG2022

Joint Coreset Construction and Quantization for Distributed Machine Learning

Hanlin Lu, Changchang Liu, Shiqiang Wang +4

Coresets are small, weighted summaries of larger datasets, aiming at providing provable error bounds for machine learning (ML) tasks while significantly reducing the communication…

cs.CR2021★ 1 cited

AHEAD: Adaptive Hierarchical Decomposition for Range Query under Local Differential Privacy

Linkang Du, Zhikun Zhang, Shaojie Bai +4

For protecting users' private data, local differential privacy (LDP) has been leveraged to provide the privacy-preserving range query, thus supporting further statistical analysis.…

cs.LG2021★ 1 cited

Communication-efficient k-Means for Edge-based Machine Learning

Hanlin Lu, Ting He, Shiqiang Wang +5

We consider the problem of computing the k-means centers for a large high-dimensional dataset in the context of edge-based machine learning, where data sources offload machine lear…

cs.LG2020★ 9 cited

Sharing Models or Coresets: A Study based on Membership Inference Attack

Hanlin Lu, Changchang Liu, Ting He +2

Distributed machine learning generally aims at training a global model based on distributed data without collecting all the data to a centralized location, where two different appr…

cs.LG2020

Overcoming Noisy and Irrelevant Data in Federated Learning

Tiffany Tuor, Shiqiang Wang, Bong Jun Ko +2

Many image and vision applications require a large amount of data for model training. Collecting all such data at a central location can be challenging due to data privacy and comm…

cs.SI2018

Blind De-anonymization Attacks using Social Networks

Wei-Han Lee, Changchang Liu, Shouling Ji +2

It is important to study the risks of publishing privacy-sensitive data. Even if sensitive identities (e.g., name, social security number) were removed and advanced data perturbati…

cs.CR2017

RON-Gauss: Enhancing Utility in Non-Interactive Private Data Release

Thee Chanyaswad, Changchang Liu, Prateek Mittal

A key challenge facing the design of differential privacy in the non-interactive setting is to maintain the utility of the released data. To overcome this challenge, we utilize the…

cs.SI2017

Quantification of De-anonymization Risks in Social Networks

Wei-Han Lee, Changchang Liu, Shouling Ji +2

The risks of publishing privacy-sensitive data have received considerable attention recently. Several de-anonymization attacks have been proposed to re-identify individuals even if…

cs.CR2017★ 18 cited

DEEProtect: Enabling Inference-based Access Control on Mobile Sensing Applications

Changchang Liu, Supriyo Chakraborty, Prateek Mittal

Personal sensory data is used by context-aware mobile applications to provide utility. However, the same data can also be used by an adversary to make sensitive inferences about a…

cs.SI2015★ 6 cited

LinkMirage: How to Anonymize Links in Dynamic Social Systems

Changhchang Liu, Prateek Mittal

Social network based trust relationships present a critical foundation for designing trustworthy systems, such as Sybil defenses, secure routing, and anonymous/censorshipresilient…