Search Results for author: Kowshik Thopalli

Found 11 papers, 5 papers with code

Perturbation Robust Representations of Topological Persistence Diagrams

1 code implementation ECCV 2018 Anirudh Som, Kowshik Thopalli, Karthikeyan Natesan Ramamurthy, Vinay Venkataraman, Ankita Shukla, Pavan Turaga

However, persistence diagrams are multi-sets of points and hence it is not straightforward to fuse them with features used for contemporary machine learning tools like deep-nets.

BIG-bench Machine Learning

SALT: Subspace Alignment as an Auxiliary Learning Task for Domain Adaptation

no code implementations11 Jun 2019 Kowshik Thopalli, Jayaraman J. Thiagarajan, Rushil Anirudh, Pavan Turaga

This paper represents a hybrid approach, where we assume simplified data geometry in the form of subspaces, and consider alignment as an auxiliary task to the primary task of maximizing performance on the source.

Auxiliary Learning Unsupervised Domain Adaptation

Calibrate and Prune: Improving Reliability of Lottery Tickets Through Prediction Calibration

no code implementations10 Feb 2020 Bindya Venkatesh, Jayaraman J. Thiagarajan, Kowshik Thopalli, Prasanna Sattigeri

The hypothesis that sub-network initializations (lottery) exist within the initializations of over-parameterized networks, which when trained in isolation produce highly generalizable models, has led to crucial insights into network initialization and has enabled efficient inferencing.

Transfer Learning

Automated Domain Discovery from Multiple Sources to Improve Zero-Shot Generalization

1 code implementation17 Dec 2021 Kowshik Thopalli, Sameeksha Katoch, Pavan Turaga, Jayaraman J. Thiagarajan

In this paper, we focus on the challenging problem of multi-source zero shot DG (MDG), where labeled training data from multiple source domains is available but with no access to data from the target domain.

Domain Generalization Zero-shot Generalization

Revisiting Deep Subspace Alignment for Unsupervised Domain Adaptation

no code implementations5 Jan 2022 Kowshik Thopalli, Jayaraman J Thiagarajan, Rushil Anirudh, Pavan K Turaga

In contrast to existing adversarial training-based DA methods, our approach isolates feature learning and distribution alignment steps, and utilizes a primary-auxiliary optimization strategy to effectively balance the objectives of domain invariance and model fidelity.

Representation Learning Unsupervised Domain Adaptation

Domain Alignment Meets Fully Test-Time Adaptation

1 code implementation9 Jul 2022 Kowshik Thopalli, Pavan Turaga, Jayaraman J. Thiagarajan

With a minimal overhead of storing the subspace basis set for the source data, CATTAn enables unsupervised alignment between source and target data during adaptation.

Test-time Adaptation Unsupervised Domain Adaptation

Single-Shot Domain Adaptation via Target-Aware Generative Augmentation

1 code implementation29 Oct 2022 Rakshith Subramanyam, Kowshik Thopalli, Spring Berman, Pavan Turaga, Jayaraman J. Thiagarajan

The problem of adapting models from a source domain using data from any target domain of interest has gained prominence, thanks to the brittle generalization in deep neural networks.

Attribute Test-time Adaptation

Target-Aware Generative Augmentations for Single-Shot Adaptation

1 code implementation22 May 2023 Kowshik Thopalli, Rakshith Subramanyam, Pavan Turaga, Jayaraman J. Thiagarajan

We argue that augmentations utilized by existing methods are insufficient to handle large distribution shifts, and hence propose a new approach SiSTA, which first fine-tunes a generative model from the source domain using a single-shot target, and then employs novel sampling strategies for curating synthetic target data.

Attribute Object Recognition +1

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