Search Results for author: Anshuman Chhabra

Found 10 papers, 2 papers with code

Incentivizing News Consumption on Social Media Platforms Using Large Language Models and Realistic Bot Accounts

no code implementations20 Mar 2024 Hadi Askari, Anshuman Chhabra, Bernhard Clemm von Hohenberg, Michael Heseltine, Magdalena Wojcieszak

We examine whether our over-time intervention enhances the following of news media organization, the sharing and the liking of news content and the tweeting about politics and the liking of political content.

Misinformation

Revisiting Zero-Shot Abstractive Summarization in the Era of Large Language Models from the Perspective of Position Bias

1 code implementation3 Jan 2024 Anshuman Chhabra, Hadi Askari, Prasant Mohapatra

We characterize and study zero-shot abstractive summarization in Large Language Models (LLMs) by measuring position bias, which we propose as a general formulation of the more restrictive lead bias phenomenon studied previously in the literature.

Abstractive Text Summarization Position

Robust Fair Clustering: A Novel Fairness Attack and Defense Framework

1 code implementation4 Oct 2022 Anshuman Chhabra, Peizhao Li, Prasant Mohapatra, Hongfu Liu

Experimentally, we observe that CFC is highly robust to the proposed attack and is thus a truly robust fair clustering alternative.

Adversarial Attack Clustering +2

On the Robustness of Deep Clustering Models: Adversarial Attacks and Defenses

no code implementations4 Oct 2022 Anshuman Chhabra, Ashwin Sekhari, Prasant Mohapatra

Clustering models constitute a class of unsupervised machine learning methods which are used in a number of application pipelines, and play a vital role in modern data science.

Clustering Deep Clustering +1

Fairness Degrading Adversarial Attacks Against Clustering Algorithms

no code implementations22 Oct 2021 Anshuman Chhabra, Adish Singla, Prasant Mohapatra

As a first step, we propose a fairness degrading attack algorithm for k-median clustering that operates under a whitebox threat model -- where the clustering algorithm, fairness notion, and the input dataset are known to the adversary.

Clustering Fairness

Fair Clustering Using Antidote Data

no code implementations1 Jun 2021 Anshuman Chhabra, Adish Singla, Prasant Mohapatra

Extensive experiments on different clustering algorithms and fairness notions show that our algorithms can achieve desired levels of fairness on many real-world datasets with a very small percentage of antidote data added.

Clustering Fairness

Fair Algorithms for Hierarchical Agglomerative Clustering

no code implementations7 May 2020 Anshuman Chhabra, Prasant Mohapatra

Hierarchical Agglomerative Clustering (HAC) algorithms are extensively utilized in modern data science, and seek to partition the dataset into clusters while generating a hierarchical relationship between the data samples.

Clustering Fairness +1

Suspicion-Free Adversarial Attacks on Clustering Algorithms

no code implementations16 Nov 2019 Anshuman Chhabra, Abhishek Roy, Prasant Mohapatra

To the best of our knowledge, this is the first work that generates spill-over adversarial samples without the knowledge of the true metric ensuring that the perturbed sample is not an outlier, and theoretically proves the above.

Adversarial Attack Clustering

Strong Black-box Adversarial Attacks on Unsupervised Machine Learning Models

no code implementations28 Jan 2019 Anshuman Chhabra, Abhishek Roy, Prasant Mohapatra

We first provide a strong (iterative) black-box adversarial attack that can craft adversarial samples which will be incorrectly clustered irrespective of the choice of clustering algorithm.

Adversarial Attack BIG-bench Machine Learning +2

An approach to predictively securing critical cloud infrastructures through probabilistic modeling

no code implementations29 Oct 2018 Satvik Jain, Arun Balaji Buduru, Anshuman Chhabra

Cloud infrastructures are being increasingly utilized in critical infrastructures such as banking/finance, transportation and utility management.

Management

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