Search Results for author: Tina Behnia

Found 5 papers, 1 papers with code

Supervised Contrastive Representation Learning: Landscape Analysis with Unconstrained Features

no code implementations29 Feb 2024 Tina Behnia, Christos Thrampoulidis

Recent findings reveal that over-parameterized deep neural networks, trained beyond zero training-error, exhibit a distinctive structural pattern at the final layer, termed as Neural-collapse (NC).

Representation Learning

Symmetric Neural-Collapse Representations with Supervised Contrastive Loss: The Impact of ReLU and Batching

no code implementations13 Jun 2023 Ganesh Ramachandra Kini, Vala Vakilian, Tina Behnia, Jaidev Gill, Christos Thrampoulidis

Supervised contrastive loss (SCL) is a competitive and often superior alternative to the cross-entropy loss for classification.

On the Implicit Geometry of Cross-Entropy Parameterizations for Label-Imbalanced Data

1 code implementation14 Mar 2023 Tina Behnia, Ganesh Ramachandra Kini, Vala Vakilian, Christos Thrampoulidis

Aiming to extend this theory to non-linear models, we investigate the implicit geometry of classifiers and embeddings that are learned by different CE parameterizations.

On how to avoid exacerbating spurious correlations when models are overparameterized

no code implementations25 Jun 2022 Tina Behnia, Ke Wang, Christos Thrampoulidis

Overparameterized models fail to generalize well in the presence of data imbalance even when combined with traditional techniques for mitigating imbalances.

Generalization Bounds imbalanced classification

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