Search Results for author: Subhabrata Majumdar

Found 15 papers, 6 papers with code

Semantic Consistency for Assuring Reliability of Large Language Models

no code implementations17 Aug 2023 Harsh Raj, Vipul Gupta, Domenic Rosati, Subhabrata Majumdar

Large Language Models (LLMs) exhibit remarkable fluency and competence across various natural language tasks.

Question Answering Text Generation

Network Security Modelling with Distributional Data

no code implementations24 Nov 2022 Subhabrata Majumdar, Ganesh Subramaniam

We investigate the detection of botnet command and control (C2) hosts in massive IP traffic using machine learning methods.

Intrusion Detection

Measuring Reliability of Large Language Models through Semantic Consistency

1 code implementation10 Nov 2022 Harsh Raj, Domenic Rosati, Subhabrata Majumdar

While large pretrained language models (PLMs) demonstrate incredible fluency and performance on many natural language tasks, recent work has shown that well-performing PLMs are very sensitive to what prompts are feed into them.

Text Generation

Towards Algorithmic Fairness in Space-Time: Filling in Black Holes

no code implementations8 Nov 2022 Cheryl Flynn, Aritra Guha, Subhabrata Majumdar, Divesh Srivastava, Zhengyi Zhou

New technologies and the availability of geospatial data have drawn attention to spatio-temporal biases present in society.

Active Learning Fairness +1

Feature Selection using e-values

1 code implementation11 Jun 2022 Subhabrata Majumdar, Snigdhansu Chatterjee

In the context of supervised parametric models, we introduce the concept of e-values.

feature selection

Scaling New Peaks: A Viewership-centric Approach to Automated Content Curation

no code implementations9 Aug 2021 Subhabrata Majumdar, Deirdre Paul, Eric Zavesky

Summarizing video content is important for video streaming services to engage the user in a limited time span.

Anomaly Detection

Generalized Multivariate Signs for Nonparametric Hypothesis Testing in High Dimensions

no code implementations2 Jul 2021 Subhabrata Majumdar, Snigdhansu Chatterjee

High-dimensional data, where the dimension of the feature space is much larger than sample size, arise in a number of statistical applications.

Two-sample testing Vocal Bursts Intensity Prediction

An Interpretable Graph-based Mapping of Trustworthy Machine Learning Research

no code implementations13 May 2021 Noemi Derzsy, Subhabrata Majumdar, Rajat Malik

Although considerable progress has been made in the field of Trustworthy ML (TwML) in the recent past, much of the current characterization of this progress is qualitative.

BIG-bench Machine Learning Community Detection

Towards an Open Global Air Quality Monitoring Platform to Assess Children's Exposure to Air Pollutants in the Light of COVID-19 Lockdowns

no code implementations17 Mar 2021 Christina Last, Prithviraj Pramanik, Nikita Saini, Akash Smaran Majety, Do-Hyung Kim, Manuel García-Herranz, Subhabrata Majumdar

This ongoing work attempts to understand and address the requirements of UNICEF, a leading organization working in children's welfare, where they aim to tackle the problem of air quality for children at a global level.

Detecting Bias in the Presence of Spatial Autocorrelation

no code implementations5 Jan 2021 Cheryl Flynn, Subhabrata Majumdar, Ritwik Mitra

In spite of considerable practical importance, current algorithmic fairness literature lacks technical methods to account for underlying geographic dependency while evaluating or mitigating bias issues for spatial data.

Bias Detection Fairness Applications Computers and Society

Intrinsic Sliced Wasserstein Distances for Comparing Collections of Probability Distributions on Manifolds and Graphs

1 code implementation28 Oct 2020 Raif Rustamov, Subhabrata Majumdar

Collections of probability distributions arise in a variety of applications ranging from user activity pattern analysis to brain connectomics.

Two-sample testing

Towards Integrating Fairness Transparently in Industrial Applications

no code implementations10 Jun 2020 Emily Dodwell, Cheryl Flynn, Balachander Krishnamurthy, Subhabrata Majumdar, Ritwik Mitra

Numerous Machine Learning (ML) bias-related failures in recent years have led to scrutiny of how companies incorporate aspects of transparency and accountability in their ML lifecycles.

Bias Detection Fairness

On Weighted Multivariate Sign Functions

1 code implementation7 May 2019 Subhabrata Majumdar, Snigdhansu Chatterjee

Multivariate sign functions are often used for robust estimation and inference.

Methodology

Joint Estimation and Inference for Data Integration Problems based on Multiple Multi-layered Gaussian Graphical Models

1 code implementation9 Mar 2018 Subhabrata Majumdar, George Michailidis

Following this, we develop a debiasing technique and asymptotic distributions of inter-layer directed edge weights that utilize already computed neighborhood selection coefficients for nodes in the upper layer.

Data Integration

Robust estimation of principal components from depth-based multivariate rank covariance matrix

1 code implementation25 Feb 2015 Subhabrata Majumdar

Analyzing principal components for multivariate data from its spatial sign covariance matrix (SCM) has been proposed as a computationally simple and robust alternative to normal PCA, but it suffers from poor efficiency properties and is actually inadmissible with respect to the maximum likelihood estimator.

Statistics Theory Statistics Theory

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