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Ishita Mediratta

4 accepted papers

2024

The Generalization Gap in Offline Reinforcement Learning

ICLR 2024poster

Despite recent progress in offline learning, these methods are still trained and tested on the same environment. In this paper, we compare the generalization abilities of widely used online and offline learning methods such as online reinforcement learning (RL), offline RL, sequence modeling, and be…

2024

Understanding the Effects of RLHF on LLM Generalisation and Diversity

ICLR 2024poster

Large language models (LLMs) fine-tuned with reinforcement learning from human feedback (RLHF) have been used in some of the most widely deployed AI models to date, such as OpenAI's ChatGPT or Anthropic's Claude. While there has been significant work developing these methods, our understanding of th…

2022

Bottom Up Top down Detection Transformers for Language Grounding in Images and Point Clouds

ECCV 2022poster

"Most models tasked to ground referential utterances in 2D and 3D scenes learn to select the referred object from a pool of object proposals provided by a pre-trained detector. This is limiting because an utterance may refer to visual entities at various levels of granularity, such as the chair, the…

2021

CoCoNets: Continuous Contrastive 3D Scene Representations

CVPR 2021poster

This paper explores self-supervised learning of amodal 3D feature representations from RGB and RGB-D posed images and videos, agnostic to object and scene semantic content, and evaluates the resulting scene representations in the downstream tasks of visual correspondence, object tracking, and object…

Cited by 27PDFScholar