1.5k citations · 2.7k across the 25 of their papers we have counts for
28 papers
ReliabilityRAG: Effective and Provably Robust Defense for RAG-based Web-Search
Zeyu Shen, Basileal Imana, Tong Wu +3
Retrieval-Augmented Generation (RAG) enhances Large Language Models by grounding their outputs in external documents. These systems, however, remain vulnerable to attacks on the re…
External Evaluation of Discrimination Mitigation Efforts in Meta's Ad Delivery
Basileal Imana, Zeyu Shen, John Heidemann +1
The 2022 settlement between Meta and the U.S. Department of Justice to resolve allegations of discriminatory advertising resulted is a first-of-its-kind change to Meta's ad deliver…
On the Use of Proxies in Political Ad Targeting
Piotr Sapiezynski, Levi Kaplan, Alan Mislove +1
Detailed targeting of advertisements has long been one of the core offerings of online platforms. Unfortunately, malicious advertisers have frequently abused such targeting feature…
Auditing for Bias in Ad Delivery Using Inferred Demographic Attributes
Basileal Imana, Aleksandra Korolova, John Heidemann
Auditing social-media algorithms has become a focus of public-interest research and policymaking to ensure their fairness across demographic groups such as race, age, and gender in…
Differential Privacy with Multiple Selections
Ashish Goel, Zhihao Jiang, Aleksandra Korolova +2
We consider the setting where a user with sensitive features wishes to obtain a recommendation from a server in a differentially private fashion. We propose a ``multi-selection'' a…
Auditing for Racial Discrimination in the Delivery of Education Ads
Basileal Imana, Aleksandra Korolova, John Heidemann
Digital ads on social-media platforms play an important role in shaping access to economic opportunities. Our work proposes and implements a new third-party auditing method that ca…