← Search

Bhrij Patel

4 accepted papers

2025

Confidence-Controlled Exploration: Efficient Sparse-Reward Policy Learning for Robot Navigation

IROS 2025

Reinforcement learning (RL) is a promising approach for robotic navigation, allowing robots to learn through trial and error. However, real-world robotic tasks often suffer from sparse rewards, leading to inefficient exploration and suboptimal policies due to sample inefficiency of RL. In this work,

Cited by 4SourceScholar
2025

Learning API Functionality from In-Context Demonstrations for Tool-based Agents

EMNLP 2025

Digital tool-based agents, powered by Large Language Models (LLMs), that invoke external Application Programming Interfaces (APIs) often rely on documentation to understand API functionality. However, such documentation is frequently missing, outdated, privatized, or inconsistent—hindering the devel

Cited by 0SourcePDFScholar
2024

Towards Global Optimality for Practical Average Reward Reinforcement Learning without Mixing Time Oracles

ICML 2024poster

In the context of average-reward reinforcement learning, the requirement for oracle knowledge of the mixing time, a measure of the duration a Markov chain under a fixed policy needs to achieve its stationary distribution, poses a significant challenge for the global convergence of policy gradient me…

Cited by 2SourcePDFScholar
2023

Beyond Exponentially Fast Mixing in Average-Reward Reinforcement Learning via Multi-Level Monte Carlo Actor-Critic

ICML 2023poster

Many existing reinforcement learning (RL) methods employ stochastic gradient iteration on the back end, whose stability hinges upon a hypothesis that the data-generating process mixes exponentially fast with a rate parameter that appears in the step-size selection. Unfortunately, this assumption is…

Cited by 14SourcePDFScholar