no code implementations • 20 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.
1 code implementation • 3 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.
1 code implementation • 4 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.
no code implementations • 4 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.
no code implementations • 22 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.
no code implementations • 1 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.
no code implementations • 7 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.
no code implementations • 16 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.
no code implementations • 28 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.
no code implementations • 29 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.