Search Results for author: Alexandre Piche

Found 4 papers, 1 papers with code

Exploring validation metrics for offline model-based optimisation with diffusion models

1 code implementation19 Nov 2022 Christopher Beckham, Alexandre Piche, David Vazquez, Christopher Pal

Measuring the mean reward of generated candidates over this approximation is one such `validation metric', whereas we are interested in a more fundamental question which is finding which validation metrics correlate the most with the ground truth.

Denoising Model Selection

Bridging the Gap Between Target Networks and Functional Regularization

no code implementations21 Oct 2022 Alexandre Piche, Valentin Thomas, Joseph Marino, Rafael Pardinas, Gian Maria Marconi, Christopher Pal, Mohammad Emtiyaz Khan

However, learning the value function via bootstrapping often leads to unstable training due to fast-changing target values.

Implicit Offline Reinforcement Learning via Supervised Learning

no code implementations21 Oct 2022 Alexandre Piche, Rafael Pardinas, David Vazquez, Igor Mordatch, Chris Pal

Despite the benefits of using implicit models to learn robotic skills via BC, offline RL via Supervised Learning algorithms have been limited to explicit models.

Offline RL reinforcement-learning +1

Probabilistic Planning with Sequential Monte Carlo methods

no code implementations ICLR 2019 Alexandre Piche, Valentin Thomas, Cyril Ibrahim, Yoshua Bengio, Chris Pal

In this work, we propose a novel formulation of planning which views it as a probabilistic inference problem over future optimal trajectories.

Continuous Control

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