1 code implementation • 5 Feb 2024 • Huy Nghiem, Umang Gupta, Fred Morstatter
The propagation of offensive content through social media channels has garnered attention of the research community.
1 code implementation • 30 May 2023 • Umang Gupta, Aram Galstyan, Greg Ver Steeg
This can be a drawback for low-resource applications and training with differential-privacy constraints, where excessive noise may be introduced during finetuning.
1 code implementation • 2 Mar 2023 • Umang Gupta, Tamoghna Chattopadhyay, Nikhil Dhinagar, Paul M. Thompson, Greg Ver Steeg, the Alzheimer's Disease Neuroimaging Initiative
Transfer learning has remarkably improved computer vision.
no code implementations • 24 Aug 2022 • Dimitris Stripelis, Umang Gupta, Nikhil Dhinagar, Greg Ver Steeg, Paul Thompson, José Luis Ambite
In our experiments in centralized and federated settings on the brain age prediction task (estimating a person's age from their brain MRI), we demonstrate that models can be pruned up to 95% sparsity without affecting performance even in challenging federated learning environments with highly heterogeneous data distributions.
1 code implementation • 11 May 2022 • Dimitris Stripelis, Umang Gupta, Hamza Saleem, Nikhil Dhinagar, Tanmay Ghai, Rafael Chrysovalantis Anastasiou, Armaghan Asghar, Greg Ver Steeg, Srivatsan Ravi, Muhammad Naveed, Paul M. Thompson, Jose Luis Ambite
Each site trains the neural network over its private data for some time, then shares the neural network parameters (i. e., weights, gradients) with a Federation Controller, which in turn aggregates the local models, sends the resulting community model back to each site, and the process repeats.
no code implementations • 26 Apr 2022 • Dimitris Stripelis, Umang Gupta, Greg Ver Steeg, Jose Luis Ambite
Second, the models are incrementally constrained to a smaller set of parameters, which facilitates alignment/merging of the local models and improved learning performance at high sparsification rates.
no code implementations • Findings (ACL) 2022 • Umang Gupta, Jwala Dhamala, Varun Kumar, Apurv Verma, Yada Pruksachatkun, Satyapriya Krishna, Rahul Gupta, Kai-Wei Chang, Greg Ver Steeg, Aram Galstyan
Language models excel at generating coherent text, and model compression techniques such as knowledge distillation have enabled their use in resource-constrained settings.
1 code implementation • NAACL (TrustNLP) 2022 • Ninareh Mehrabi, Umang Gupta, Fred Morstatter, Greg Ver Steeg, Aram Galstyan
The widespread use of Artificial Intelligence (AI) in consequential domains, such as healthcare and parole decision-making systems, has drawn intense scrutiny on the fairness of these methods.
no code implementations • 7 Aug 2021 • Dimitris Stripelis, Hamza Saleem, Tanmay Ghai, Nikhil Dhinagar, Umang Gupta, Chrysovalantis Anastasiou, Greg Ver Steeg, Srivatsan Ravi, Muhammad Naveed, Paul M. Thompson, Jose Luis Ambite
Federated learning (FL) enables distributed computation of machine learning models over various disparate, remote data sources, without requiring to transfer any individual data to a centralized location.
no code implementations • 6 May 2021 • Umang Gupta, Dimitris Stripelis, Pradeep K. Lam, Paul M. Thompson, José Luis Ambite, Greg Ver Steeg
In particular, we show that it is possible to infer if a sample was used to train the model given only access to the model prediction (black-box) or access to the model itself (white-box) and some leaked samples from the training data distribution.
2 code implementations • 8 Feb 2021 • Umang Gupta, Pradeep K. Lam, Greg Ver Steeg, Paul M. Thompson
Deep Learning for neuroimaging data is a promising but challenging direction.
2 code implementations • 11 Jan 2021 • Umang Gupta, Aaron M Ferber, Bistra Dilkina, Greg Ver Steeg
Controlling bias in training datasets is vital for ensuring equal treatment, or parity, between different groups in downstream applications.
no code implementations • ICLR 2018 • Nitin Kamra, Umang Gupta, Yan Liu
This phenomenon called catastrophic forgetting is a fundamental challenge to overcome before neural networks can learn continually from incoming data.
no code implementations • 21 Jul 2017 • Umang Gupta, Ankush Chatterjee, Radhakrishnan Srikanth, Puneet Agrawal
In this paper, we propose a novel approach to detect emotions like happy, sad or angry in textual conversations using an LSTM based Deep Learning model.