Search Results for author: Jayaram Raghuram

Found 7 papers, 5 papers with code

Stratified Adversarial Robustness with Rejection

1 code implementation2 May 2023 Jiefeng Chen, Jayaram Raghuram, Jihye Choi, Xi Wu, YIngyu Liang, Somesh Jha

We theoretically analyze the stratified rejection setting and propose a novel defense method -- Adversarial Training with Consistent Prediction-based Rejection (CPR) -- for building a robust selective classifier.

Adversarial Robustness Robust classification

The Trade-off between Universality and Label Efficiency of Representations from Contrastive Learning

1 code implementation28 Feb 2023 Zhenmei Shi, Jiefeng Chen, Kunyang Li, Jayaram Raghuram, Xi Wu, YIngyu Liang, Somesh Jha

foundation models) has recently become a prevalent learning paradigm, where one first pre-trains a representation using large-scale unlabeled data, and then learns simple predictors on top of the representation using small labeled data from the downstream tasks.

Contrastive Learning

Concept-based Explanations for Out-Of-Distribution Detectors

1 code implementation4 Mar 2022 Jihye Choi, Jayaram Raghuram, Ryan Feng, Jiefeng Chen, Somesh Jha, Atul Prakash

Based on these metrics, we propose an unsupervised framework for learning a set of concepts that satisfy the desired properties of high detection completeness and concept separability, and demonstrate its effectiveness in providing concept-based explanations for diverse off-the-shelf OOD detectors.

Out of Distribution (OOD) Detection

Revisiting Adversarial Robustness of Classifiers With a Reject Option

no code implementations AAAI Workshop AdvML 2022 Jiefeng Chen, Jayaram Raghuram, Jihye Choi, Xi Wu, YIngyu Liang, Somesh Jha

Motivated by this metric, we propose novel loss functions and a robust training method -- \textit{stratified adversarial training with rejection} (SATR) -- for a classifier with reject option, where the goal is to accept and correctly-classify small input perturbations, while allowing the rejection of larger input perturbations that cannot be correctly classified.

Adversarial Robustness Image Classification

Fast and Sample-Efficient Domain Adaptation for Autoencoder-Based End-to-End Communication

no code implementations29 Sep 2021 Jayaram Raghuram, Yijing Zeng, Dolores Garcia, Somesh Jha, Suman Banerjee, Joerg Widmer, Rafael Ruiz

In this paper, we address the setting where the target domain has only limited labeled data from a distribution that is expected to change frequently.

Decoder Domain Adaptation

Few-Shot Domain Adaptation For End-to-End Communication

1 code implementation2 Aug 2021 Jayaram Raghuram, Yijing Zeng, Dolores García Martí, Rafael Ruiz Ortiz, Somesh Jha, Joerg Widmer, Suman Banerjee

The problem of end-to-end learning of a communication system using an autoencoder -- consisting of an encoder, channel, and decoder modeled using neural networks -- has recently been shown to be an effective approach.

Decoder Domain Adaptation +1

A General Framework For Detecting Anomalous Inputs to DNN Classifiers

1 code implementation29 Jul 2020 Jayaram Raghuram, Varun Chandrasekaran, Somesh Jha, Suman Banerjee

We propose an unsupervised anomaly detection framework based on the internal DNN layer representations in the form of a meta-algorithm with configurable components.

Image Classification Unsupervised Anomaly Detection

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