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Elvis Nava

6 accepted papers

2026

mimic-video: Video-Action Models for Generalizable Robot Control Beyond VLAs

RSS 2026poster

Prevailing Vision-Language-Action Models (VLAs) for robotic manipulation are built upon vision-language backbones pretrained on large-scale, but disconnected static web data. As a result, despite improved semantic generalization, the policy must implicitly infer complex physical dynamics and tempora…

Cited by 0SourceScholar
2024

Vision-Language Models are Zero-Shot Reward Models for Reinforcement Learning

ICLR 2024poster

Reinforcement learning (RL) requires either manually specifying a reward function, which is often infeasible, or learning a reward model from a large amount of human feedback, which is often very expensive. We study a more sample-efficient alternative: using pretrained vision-language models (VLMs)…

2022

Diversified Sampling for Batched Bayesian Optimization with Determinantal Point Processes

AISTATS 2022poster

In Bayesian Optimization (BO) we study black-box function optimization with noisy point evaluations and Bayesian priors. Convergence of BO can be greatly sped up by batching, where multiple evaluations of the black-box function are performed in a single round. The main difficulty in this setting is…

Cited by 22SourcePDFScholar
2022

Fast Aquatic Swimmer Optimization with Differentiable Projective Dynamics and Neural Network Hydrodynamic Models

ICML 2022spotlight

Aquatic locomotion is a classic fluid-structure interaction (FSI) problem of interest to biologists and engineers. Solving the fully coupled FSI equations for incompressible Navier-Stokes and finite elasticity is computationally expensive. Optimizing robotic swimmer design within such a system gener…

Cited by 16SourcePDFScholar
2022

Sim2Real for Soft Robotic Fish via Differentiable Simulation

IROS 2022poster

Accurate simulation of soft mechanisms under dynamic actuation is critical for the design of soft robots. We address this gap with our differentiable simulation tool by learning the material parameters of our soft robotic fish. On the example of a soft robotic fish, we demonstrate an experimentally-…

Cited by 22SourceScholar