Search Results for author: Samuel Lavoie

Found 6 papers, 4 papers with code

Modeling Caption Diversity in Contrastive Vision-Language Pretraining

no code implementations30 Apr 2024 Samuel Lavoie, Polina Kirichenko, Mark Ibrahim, Mahmoud Assran, Andrew Gordon Wildon, Aaron Courville, Nicolas Ballas

Contrastive Language Pretraining (CLIP) on the other hand, works by mapping an image and its caption to a single vector -- limiting how well CLIP-like models can represent the diverse ways to describe an image.

SPARO: Selective Attention for Robust and Compositional Transformer Encodings for Vision

1 code implementation24 Apr 2024 Ankit Vani, Bac Nguyen, Samuel Lavoie, Ranjay Krishna, Aaron Courville

Using SPARO, we demonstrate improvements on downstream recognition, robustness, retrieval, and compositionality benchmarks with CLIP (up to +14% for ImageNet, +4% for SugarCrepe), and on nearest neighbors and linear probe for ImageNet with DINO (+3% each).

Inductive Bias Representation Learning

Language Model Alignment with Elastic Reset

1 code implementation NeurIPS 2023 Michael Noukhovitch, Samuel Lavoie, Florian Strub, Aaron Courville

We periodically reset the online model to an exponentially moving average (EMA) of itself, then reset the EMA model to the initial model.

Chatbot Language Modelling +1

Simplicial Embeddings in Self-Supervised Learning and Downstream Classification

1 code implementation1 Apr 2022 Samuel Lavoie, Christos Tsirigotis, Max Schwarzer, Ankit Vani, Michael Noukhovitch, Kenji Kawaguchi, Aaron Courville

Simplicial Embeddings (SEM) are representations learned through self-supervised learning (SSL), wherein a representation is projected into $L$ simplices of $V$ dimensions each using a softmax operation.

Classification Inductive Bias +1

Integrating Categorical Semantics into Unsupervised Domain Translation

1 code implementation ICLR 2021 Samuel Lavoie, Faruk Ahmed, Aaron Courville

While unsupervised domain translation (UDT) has seen a lot of success recently, we argue that mediating its translation via categorical semantic features could broaden its applicability.

Object Translation

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