Search Results for author: Subhro Das

Found 35 papers, 11 papers with code

A Research Framework for Understanding Education-Occupation Alignment with NLP Techniques

no code implementations ACL (NLP4PosImpact) 2021 Renzhe Yu, Subhro Das, Sairam Gurajada, Kush Varshney, Hari Raghavan, Carlos Lastra-Anadon

Understanding the gaps between job requirements and university curricula is crucial for improving student success and institutional effectiveness in higher education.

The RealHumanEval: Evaluating Large Language Models' Abilities to Support Programmers

1 code implementation3 Apr 2024 Hussein Mozannar, Valerie Chen, Mohammed Alsobay, Subhro Das, Sebastian Zhao, Dennis Wei, Manish Nagireddy, Prasanna Sattigeri, Ameet Talwalkar, David Sontag

Evaluation of large language models (LLMs) for code has primarily relied on static benchmarks, including HumanEval (Chen et al., 2021), which measure the ability of LLMs to generate complete code that passes unit tests.

Improved Evidential Deep Learning via a Mixture of Dirichlet Distributions

no code implementations9 Feb 2024 J. Jon Ryu, Maohao Shen, Soumya Ghosh, Yuheng Bu, Prasanna Sattigeri, Subhro Das, Gregory W. Wornell

This paper explores a modern predictive uncertainty estimation approach, called evidential deep learning (EDL), in which a single neural network model is trained to learn a meta distribution over the predictive distribution by minimizing a specific objective function.

Variational Inference

One step closer to unbiased aleatoric uncertainty estimation

1 code implementation16 Dec 2023 Wang Zhang, Ziwen Ma, Subhro Das, Tsui-Wei Weng, Alexandre Megretski, Luca Daniel, Lam M. Nguyen

Neural networks are powerful tools in various applications, and quantifying their uncertainty is crucial for reliable decision-making.

Decision Making

Correlated Attention in Transformers for Multivariate Time Series

no code implementations20 Nov 2023 Quang Minh Nguyen, Lam M. Nguyen, Subhro Das

Multivariate time series (MTS) analysis prevails in real-world applications such as finance, climate science and healthcare.

Anomaly Detection Imputation +2

Effective Human-AI Teams via Learned Natural Language Rules and Onboarding

1 code implementation NeurIPS 2023 Hussein Mozannar, Jimin J Lee, Dennis Wei, Prasanna Sattigeri, Subhro Das, David Sontag

In this work, we propose to learn rules, grounded in data regions and described in natural language, that illustrate how the human should collaborate with the AI.

Language Modelling Large Language Model +3

Non-asymptotic System Identification for Linear Systems with Nonlinear Policies

no code implementations17 Jun 2023 YingYing Li, Tianpeng Zhang, Subhro Das, Jeff Shamma, Na Li

This paper considers a single-trajectory system identification problem for linear systems under general nonlinear and/or time-varying policies with i. i. d.

Model Predictive Control

Reliable Gradient-free and Likelihood-free Prompt Tuning

1 code implementation30 Apr 2023 Maohao Shen, Soumya Ghosh, Prasanna Sattigeri, Subhro Das, Yuheng Bu, Gregory Wornell

Due to privacy or commercial constraints, large pre-trained language models (PLMs) are often offered as black-box APIs.

Label-Free Concept Bottleneck Models

1 code implementation12 Apr 2023 Tuomas Oikarinen, Subhro Das, Lam M. Nguyen, Tsui-Wei Weng

Motivated by these challenges, we propose Label-free CBM which is a novel framework to transform any neural network into an interpretable CBM without labeled concept data, while retaining a high accuracy.

Variance-reduced Clipping for Non-convex Optimization

1 code implementation2 Mar 2023 Amirhossein Reisizadeh, Haochuan Li, Subhro Das, Ali Jadbabaie

This is in clear contrast to the well-established assumption in folklore non-convex optimization, a. k. a.

Language Modelling

Group Fairness with Uncertainty in Sensitive Attributes

no code implementations16 Feb 2023 Abhin Shah, Maohao Shen, Jongha Jon Ryu, Subhro Das, Prasanna Sattigeri, Yuheng Bu, Gregory W. Wornell

To overcome this limitation, we propose a bootstrap-based algorithm that achieves the target level of fairness despite the uncertainty in sensitive attributes.

Fairness

ConCerNet: A Contrastive Learning Based Framework for Automated Conservation Law Discovery and Trustworthy Dynamical System Prediction

1 code implementation11 Feb 2023 Wang Zhang, Tsui-Wei Weng, Subhro Das, Alexandre Megretski, Luca Daniel, Lam M. Nguyen

Deep neural networks (DNN) have shown great capacity of modeling a dynamical system; nevertheless, they usually do not obey physics constraints such as conservation laws.

Contrastive Learning

Who Should Predict? Exact Algorithms For Learning to Defer to Humans

1 code implementation15 Jan 2023 Hussein Mozannar, Hunter Lang, Dennis Wei, Prasanna Sattigeri, Subhro Das, David Sontag

We show that prior approaches can fail to find a human-AI system with low misclassification error even when there exists a linear classifier and rejector that have zero error (the realizable setting).

Post-hoc Uncertainty Learning using a Dirichlet Meta-Model

1 code implementation14 Dec 2022 Maohao Shen, Yuheng Bu, Prasanna Sattigeri, Soumya Ghosh, Subhro Das, Gregory Wornell

It is known that neural networks have the problem of being over-confident when directly using the output label distribution to generate uncertainty measures.

Image Classification Transfer Learning +1

On Convergence of Gradient Descent Ascent: A Tight Local Analysis

no code implementations3 Jul 2022 Haochuan Li, Farzan Farnia, Subhro Das, Ali Jadbabaie

In this paper, we aim to bridge this gap by analyzing the \emph{local convergence} of general \emph{nonconvex-nonconcave} minimax problems.

An alternative approach for distributed parameter estimation under Gaussian settings

no code implementations14 Apr 2022 Subhro Das

This paper takes a different approach for the distributed linear parameter estimation over a multi-agent network.

On observability and optimal gain design for distributed linear filtering and prediction

no code implementations7 Mar 2022 Subhro Das

This paper presents a new approach to distributed linear filtering and prediction.

Safe Adaptive Learning-based Control for Constrained Linear Quadratic Regulators with Regret Guarantees

no code implementations31 Oct 2021 YingYing Li, Subhro Das, Jeff Shamma, Na Li

We study the adaptive control of an unknown linear system with a quadratic cost function subject to safety constraints on both the states and actions.

Selective Regression Under Fairness Criteria

1 code implementation28 Oct 2021 Abhin Shah, Yuheng Bu, Joshua Ka-Wing Lee, Subhro Das, Rameswar Panda, Prasanna Sattigeri, Gregory W. Wornell

Selective regression allows abstention from prediction if the confidence to make an accurate prediction is not sufficient.

Fairness regression

Tactics on Refining Decision Boundary for Improving Certification-based Robust Training

no code implementations29 Sep 2021 Wang Zhang, Lam M. Nguyen, Subhro Das, Pin-Yu Chen, Sijia Liu, Alexandre Megretski, Luca Daniel, Tsui-Wei Weng

In verification-based robust training, existing methods utilize relaxation based methods to bound the worst case performance of neural networks given certain perturbation.

Stochastic Optimization with Non-stationary Noise: The Power of Moment Estimation

no code implementations1 Jan 2021 Jingzhao Zhang, Hongzhou Lin, Subhro Das, Suvrit Sra, Ali Jadbabaie

In particular, standard results on optimal convergence rates for stochastic optimization assume either there exists a uniform bound on the moments of the gradient noise, or that the noise decays as the algorithm progresses.

Stochastic Optimization

Online Optimal Control with Affine Constraints

no code implementations10 Oct 2020 YingYing Li, Subhro Das, Na Li

We show that OGD-BZ can achieve a policy regret upper bound that is the square root of the horizon length multiplied by some logarithmic terms of the horizon length under proper algorithm parameters.

Verifiably Safe Exploration for End-to-End Reinforcement Learning

1 code implementation2 Jul 2020 Nathan Hunt, Nathan Fulton, Sara Magliacane, Nghia Hoang, Subhro Das, Armando Solar-Lezama

We also prove that our method of enforcing the safety constraints preserves all safe policies from the original environment.

object-detection Object Detection +3

A Dynamical Systems Approach for Convergence of the Bayesian EM Algorithm

no code implementations23 Jun 2020 Orlando Romero, Subhro Das, Pin-Yu Chen, Sérgio Pequito

Out of the recent advances in systems and control (S\&C)-based analysis of optimization algorithms, not enough work has been specifically dedicated to machine learning (ML) algorithms and its applications.

GAT-GMM: Generative Adversarial Training for Gaussian Mixture Models

no code implementations18 Jun 2020 Farzan Farnia, William Wang, Subhro Das, Ali Jadbabaie

Motivated by optimal transport theory, we design the zero-sum game in GAT-GMM using a random linear generator and a softmax-based quadratic discriminator architecture, which leads to a non-convex concave minimax optimization problem.

Formal Verification of End-to-End Learning in Cyber-Physical Systems: Progress and Challenges

no code implementations15 Jun 2020 Nathan Fulton, Nathan Hunt, Nghia Hoang, Subhro Das

Autonomous systems -- such as self-driving cars, autonomous drones, and automated trains -- must come with strong safety guarantees.

Self-Driving Cars

Model adaptation and unsupervised learning with non-stationary batch data under smooth concept drift

no code implementations10 Feb 2020 Subhro Das, Prasanth Lade, Soundar Srinivasan

In this paper, we consider the scenario of a gradual concept drift due to the underlying non-stationarity of the data source.

Learning Occupational Task-Shares Dynamics for the Future of Work

no code implementations28 Jan 2020 Subhro Das, Sebastian Steffen, Wyatt Clarke, Prabhat Reddy, Erik Brynjolfsson, Martin Fleming

The recent wave of AI and automation has been argued to differ from previous General Purpose Technologies (GPTs), in that it may lead to rapid change in occupations' underlying task requirements and persistent technological unemployment.

Learning Patient Engagement in Care Management: Performance vs. Interpretability

no code implementations19 Jun 2019 Subhro Das, Chandramouli Maduri, Ching-Hua Chen, Pei-Yun S. Hsueh

In this paper, we present a real world data-driven method and the behavioral engagement scoring pipeline for scoring the engagement level of a patient in two regards: (1) Their interest in enrolling into a relevant care program, and (2) their interest and commitment to program goals.

Management

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