activity
20152026
most citedAdversarial Inter-Group Link Injection Degrades the Fairness of Graph Neural Networks

17 citations · 52 across the 18 of their papers we have counts for

collaborators

19 papers

cs.CL2026

When Safety Speaks a Language: A Mechanistic Analysis of Safety-Language Identity Entanglement in LLMs

Apoorva Upadhyaya, Sandipan Sikdar

Safety alignment of large language models (LLMs) degrades across languages, yet the internal mechanism driving this asymmetry remains poorly understood. Our work, therefore, presen…

cs.LG2026

REMEDI: A Benchmark for Retention and Unlearning Evaluation in Multi-label Clinical Disease Inference

Anurag Sharma, Sai Teja Chunchu, Prasenjit Mitra +2

Language models trained for clinical disease inference are trained on patient data, which may include sensitive and private information, and data owners may request the removal of…

cs.CR2026

Towards Sensitivity-Aware Language Models

Dren Fazlija, Iyiola E. Olatunji, Daniel Kudenko +1

With LLMs increasingly deployed in corporate data management, it is crucial to ensure that these models do not leak sensitive information. In the context of corporate data manageme…

cs.CL2025

ACCESS DENIED INC: The First Benchmark Environment for Sensitivity Awareness

Dren Fazlija, Arkadij Orlov, Sandipan Sikdar

Large language models (LLMs) are increasingly becoming valuable to corporate data management due to their ability to process text from various document formats and facilitate user…

cs.CV2025

Exploring Disparity-Accuracy Trade-offs in Face Recognition Systems: The Role of Datasets, Architectures, and Loss Functions

Siddharth D Jaiswal, Sagnik Basu, Sandipan Sikdar +1

Automated Face Recognition Systems (FRSs), developed using deep learning models, are deployed worldwide for identity verification and facial attribute analysis. The performance of…

cs.SI2024

Recommendation Fairness in Social Networks Over Time

Meng Cao, Hussain Hussain, Sandipan Sikdar +3

In social recommender systems, it is crucial that the recommendation models provide equitable visibility for different demographic groups, such as gender or race. Most existing res…

cs.LG2023

IVP-VAE: Modeling EHR Time Series with Initial Value Problem Solvers

Jingge Xiao, Leonie Basso, Wolfgang Nejdl +2

Continuous-time models such as Neural ODEs and Neural Flows have shown promising results in analyzing irregularly sampled time series frequently encountered in electronic health re…

cs.AI2023★ 8 cited

A Review of the Role of Causality in Developing Trustworthy AI Systems

Niloy Ganguly, Dren Fazlija, Maryam Badar +9

State-of-the-art AI models largely lack an understanding of the cause-effect relationship that governs human understanding of the real world. Consequently, these models do not gene…

cs.CL2023

SensePOLAR: Word sense aware interpretability for pre-trained contextual word embeddings

Jan Engler, Sandipan Sikdar, Marlene Lutz +1

Adding interpretability to word embeddings represents an area of active research in text representation. Recent work has explored thepotential of embedding words via so-called pola…

cs.LG2022★ 6 cited

Properties of Group Fairness Metrics for Rankings

Tobias Schumacher, Marlene Lutz, Sandipan Sikdar +1

In recent years, several metrics have been developed for evaluating group fairness of rankings. Given that these metrics were developed with different application contexts and rank…

cs.LG2022★ 17 cited

Adversarial Inter-Group Link Injection Degrades the Fairness of Graph Neural Networks

Hussain Hussain, Meng Cao, Sandipan Sikdar +4

We present evidence for the existence and effectiveness of adversarial attacks on graph neural networks (GNNs) that aim to degrade fairness. These attacks can disadvantage a partic…

cs.CY2020★ 1 cited

The Effects of Gender Signals and Performance in Online Product Reviews

Sandipan Sikdar, Rachneet Singh Sachdeva, Johannes Wachs +2

This work quantifies the effects of signaling and performing gender on the success of reviews written on the popular amazon shopping platform. Highly rated reviews play an importan…

cs.CL2020

The POLAR Framework: Polar Opposites Enable Interpretability of Pre-Trained Word Embeddings

Binny Mathew, Sandipan Sikdar, Florian Lemmerich +1

We introduce POLAR - a framework that adds interpretability to pre-trained word embeddings via the adoption of semantic differentials. Semantic differentials are a psychometric con…

cs.SI2019

StRE: Self Attentive Edit Quality Prediction in Wikipedia

Soumya Sarkar, Bhanu Prakash Reddy, Sandipan Sikdar +1

Wikipedia can easily be justified as a behemoth, considering the sheer volume of content that is added or removed every minute to its several projects. This creates an immense scop…

cs.SI2018

Using Core-Periphery Structure to Predict High Centrality Nodes in Time-Varying Networks

Soumya Sarkar, Sandipan Sikdar, Animesh Mukherjee +1

Vertices with high betweenness and closeness centrality represent influential entities in a network. An important problem for time varying networks is to know a-priori, using minim…

cs.SI2018

ComPAS: Community Preserving Sampling for Streaming Graphs

Sandipan Sikdar, Tanmoy Chakraborty, Soumya Sarkar +2

In the era of big data, graph sampling is indispensable in many settings. Existing sampling methods are mostly designed for static graphs, and aim to preserve basic structural prop…

cs.DL2017

Influence of Reviewer Interaction Network on Long-term Citations: A Case Study of the Scientific Peer-Review System of the Journal of High Energy Physics

Sandipan Sikdar, Matteo Marsili, Niloy Ganguly +1

A `peer-review system' in the context of judging research contributions, is one of the prime steps undertaken to ensure the quality of the submissions received, a significant porti…

cs.DL2016★ 6 cited

Anomalies in the peer-review system: A case study of the journal of High Energy Physics

Sandipan Sikdar, Matteo Marsili, Niloy Ganguly +1

Peer-review system has long been relied upon for bringing quality research to the notice of the scientific community and also preventing flawed research from entering into the lite…

cs.SI2015★ 14 cited

Time series analysis of temporal networks

Sandipan Sikdar, Niloy Ganguly, Animesh Mukherjee

An important feature of all real-world networks is that the network structure changes over time. Due to this dynamic nature, it becomes difficult to propose suitable growth models…