activity
20232026
most citedBreaking the Trilemma of Privacy, Utility, Efficiency via Controllable Machine Unlearning

15 citations · 21 across the 15 of their papers we have counts for

collaborators

18 papers

cs.CL2026

Debias It Yourself: Teaching LLMs Cognitive Bias Mitigation Interventions

Chahat Raj, Sina Mansouri, Aylin Caliskan +2

Bias has long been studied in social psychology and cognitive science, where decades of research have produced a body of validated interventions that reduce stereotypical thinking…

cs.CL2026

SLAI T-Rex: Full-Parameter Post-training of the DeepSeek-V4 Family on Ascend SuperPOD

Dongfang Li, Xiaodong Luo, Ruoyu Sun +62

Full-parameter post-training of trillion-parameter-scale MoE models introduces substantial system-level challenges for large-scale distributed training, including severe memory pre…

cs.AI2026

Knowing Bias, Doing Better: Mitigating Social Bias in LLMs via Know-Bias Neuron Enhancement

Jinhao Pan, Chahat Raj, Anjishnu Mukherjee +4

Large language models (LLMs) exhibit social biases that reinforce harmful stereotypes, limiting their safe deployment. Most existing debiasing methods adopt a suppressive paradigm…

cs.CL2026

MAPLE: Metadata Conditioned LLM Pretraining for Locale-Aware Question Answering

Anjishnu Mukherjee, Ziwei Zhu, Antonios Anastasopoulos

Large language models can memorize competing locale-specific facts yet fail to select among them when the locale changes, defaulting instead to a single globally dominant answer. W…

cs.LG2025

ORGEval: Graph-Theoretic Evaluation of LLMs in Optimization Modeling

Zhuohan Wang, Ziwei Zhu, Ziniu Li +8

Formulating optimization problems for industrial applications demands significant manual effort and domain expertise. While Large Language Models (LLMs) show promise in automating…

cs.CL2025

ChronoPlay: A Framework for Modeling Dual Dynamics and Authenticity in Game RAG Benchmarks

Liyang He, Yuren Zhang, Ziwei Zhu +2

Retrieval Augmented Generation (RAG) systems are increasingly vital in dynamic domains like online gaming, yet the lack of a dedicated benchmark has impeded standardized evaluation…

cs.CL2025

Bias Association Discovery Framework for Open-Ended LLM Generations

Jinhao Pan, Chahat Raj, Ziwei Zhu

Social biases embedded in Large Language Models (LLMs) raise critical concerns, resulting in representational harms -- unfair or distorted portrayals of demographic groups -- that…

cs.CL2025

Spurious Correlations and Beyond: Understanding and Mitigating Shortcut Learning in SDOH Extraction with Large Language Models

Fardin Ahsan Sakib, Ziwei Zhu, Karen Trister Grace +2

Social determinants of health (SDOH) extraction from clinical text is critical for downstream healthcare analytics. Although large language models (LLMs) have shown promise, they m…

cs.CL2025

Talent or Luck? Evaluating Attribution Bias in Large Language Models

Chahat Raj, Mahika Banerjee, Jinhao Pan +3

When a student fails an exam, do we tend to blame their effort or the test's difficulty? Attribution, defined as how reasons are assigned to event outcomes, shapes perceptions, rei…

cs.CL2025

VIGNETTE: Socially Grounded Bias Evaluation for Vision-Language Models

Chahat Raj, Bowen Wei, Aylin Caliskan +2

While bias in large language models (LLMs) is well-studied, similar concerns in vision-language models (VLMs) have received comparatively less attention. Existing VLM bias studies…

cs.CL2025★ 1 cited

Purdah and Patriarchy: Evaluating and Mitigating South Asian Biases in Open-Ended Multilingual LLM Generations

Mamnuya Rinki, Chahat Raj, Anjishnu Mukherjee +1

Evaluations of Large Language Models (LLMs) often overlook intersectional and culturally specific biases, particularly in underrepresented multilingual regions like South Asia. Thi…

cs.LG2024

ORIS: Online Active Learning Using Reinforcement Learning-based Inclusive Sampling for Robust Streaming Analytics System

Rahul Pandey, Ziwei Zhu, Hemant Purohit

Effective labeled data collection plays a critical role in developing and fine-tuning robust streaming analytics systems. However, continuously labeling documents to filter relevan…

cs.CL2024★ 3 cited

Assessing Large Language Models for Online Extremism Research: Identification, Explanation, and New Knowledge

Beidi Dong, Jin R. Lee, Ziwei Zhu +1

The United States has experienced a significant increase in violent extremism, prompting the need for automated tools to detect and limit the spread of extremist ideology online. T…

cs.CL2024★ 2 cited

Breaking Bias, Building Bridges: Evaluation and Mitigation of Social Biases in LLMs via Contact Hypothesis

Chahat Raj, Anjishnu Mukherjee, Aylin Caliskan +2

Large Language Models (LLMs) perpetuate social biases, reflecting prejudices in their training data and reinforcing societal stereotypes and inequalities. Our work explores the pot…

cs.CL2024

Crossroads of Continents: Automated Artifact Extraction for Cultural Adaptation with Large Multimodal Models

Anjishnu Mukherjee, Ziwei Zhu, Antonios Anastasopoulos

We present a comprehensive three-phase study to examine (1) the cultural understanding of Large Multimodal Models (LMMs) by introducing DalleStreet, a large-scale dataset generated…

cs.CL2024

BiasDora: Exploring Hidden Biased Associations in Vision-Language Models

Chahat Raj, Anjishnu Mukherjee, Aylin Caliskan +2

Existing works examining Vision-Language Models (VLMs) for social biases predominantly focus on a limited set of documented bias associations, such as gender:profession or race:cri…

cs.CL2023

Global Voices, Local Biases: Socio-Cultural Prejudices across Languages

Anjishnu Mukherjee, Chahat Raj, Ziwei Zhu +1

Human biases are ubiquitous but not uniform: disparities exist across linguistic, cultural, and societal borders. As large amounts of recent literature suggest, language models (LM…

cs.CR2023★ 15 cited

Breaking the Trilemma of Privacy, Utility, Efficiency via Controllable Machine Unlearning

Zheyuan Liu, Guangyao Dou, Yijun Tian +3

Machine Unlearning (MU) algorithms have become increasingly critical due to the imperative adherence to data privacy regulations. The primary objective of MU is to erase the influe…