Search Results for author: Ramnath Kumar

Found 6 papers, 3 papers with code

On the Limits of Multi-modal Meta-Learning with Auxiliary Task Modulation Using Conditional Batch Normalization

no code implementations29 May 2024 Jordi Armengol-Estapé, Vincent Michalski, Ramnath Kumar, Pierre-Luc St-Charles, Doina Precup, Samira Ebrahimi Kahou

While the classifier performs the main classification task, the auxiliary network learns to predict language representations from the same input, and the bridge network transforms high-level features of the auxiliary network into modulation parameters for layers of the few-shot classifier using conditional batch normalization.

EHI: End-to-end Learning of Hierarchical Index for Efficient Dense Retrieval

no code implementations13 Oct 2023 Ramnath Kumar, Anshul Mittal, Nilesh Gupta, Aditya Kusupati, Inderjit Dhillon, Prateek Jain

Such techniques use a two-stage process: (a) contrastive learning to train a dual encoder to embed both the query and documents and (b) approximate nearest neighbor search (ANNS) for finding similar documents for a given query.

Contrastive Learning Retrieval

Stochastic Re-weighted Gradient Descent via Distributionally Robust Optimization

no code implementations15 Jun 2023 Ramnath Kumar, Kushal Majmundar, Dheeraj Nagaraj, Arun Sai Suggala

We present Re-weighted Gradient Descent (RGD), a novel optimization technique that improves the performance of deep neural networks through dynamic sample importance weighting.

Domain Adaptation Representation Learning +1

Introspective Experience Replay: Look Back When Surprised

1 code implementation7 Jun 2022 Ramnath Kumar, Dheeraj Nagaraj

In reinforcement learning (RL), experience replay-based sampling techniques play a crucial role in promoting convergence by eliminating spurious correlations.

Q-Learning reinforcement-learning +1

Boosting Exploration in Multi-Task Reinforcement Learning using Adversarial Networks

1 code implementation27 Jan 2022 Ramnath Kumar, Tristan Deleu, Yoshua Bengio

Our proposed adversarial training regime for Multi-Task Reinforcement Learning (MT-RL) addresses the limitations of conventional training methods in RL, especially in meta-RL environments where the agent faces new tasks.

Decision Making reinforcement-learning +1

The Effect of Diversity in Meta-Learning

1 code implementation27 Jan 2022 Ramnath Kumar, Tristan Deleu, Yoshua Bengio

Recent studies show that task distribution plays a vital role in the meta-learner's performance.

Few-Shot Learning

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