Search Results for author: Ishita Mediratta

Found 6 papers, 5 papers with code

The Generalization Gap in Offline Reinforcement Learning

1 code implementation10 Dec 2023 Ishita Mediratta, Qingfei You, Minqi Jiang, Roberta Raileanu

Our experiments reveal that existing offline learning algorithms struggle to match the performance of online RL on both train and test environments.

Offline RL reinforcement-learning +1

Understanding the Effects of RLHF on LLM Generalisation and Diversity

1 code implementation10 Oct 2023 Robert Kirk, Ishita Mediratta, Christoforos Nalmpantis, Jelena Luketina, Eric Hambro, Edward Grefenstette, Roberta Raileanu

OOD generalisation is crucial given the wide range of real-world scenarios in which these models are being used, while output diversity refers to the model's ability to generate varied outputs and is important for a variety of use cases.

Instruction Following

Stabilizing Unsupervised Environment Design with a Learned Adversary

1 code implementation21 Aug 2023 Ishita Mediratta, Minqi Jiang, Jack Parker-Holder, Michael Dennis, Eugene Vinitsky, Tim Rocktäschel

As a result, we make it possible for PAIRED to match or exceed state-of-the-art methods, producing robust agents in several established challenging procedurally-generated environments, including a partially-observed maze navigation task and a continuous-control car racing environment.

Car Racing Reinforcement Learning (RL)

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

1 code implementation16 Dec 2021 Ayush Jain, Nikolaos Gkanatsios, Ishita Mediratta, Katerina Fragkiadaki

We propose a language grounding model that attends on the referential utterance and on the object proposal pool computed from a pre-trained detector to decode referenced objects with a detection head, without selecting them from the pool.

Object object-detection +2

Language Modulated Detection and Detection Modulated Language Grounding in 2D and 3D Scenes

no code implementations29 Sep 2021 Ayush Jain, Nikolaos Gkanatsios, Ishita Mediratta, Katerina Fragkiadaki

Object detectors are typically trained on a fixed vocabulary of objects and attributes that is often too restrictive for open-domain language grounding, where the language utterance may refer to visual entities in various levels of abstraction, such as a cat, the leg of a cat, or the stain on the front leg of the chair.

Object object-detection +1

CoCoNets: Continuous Contrastive 3D Scene Representations

1 code implementation CVPR 2021 Shamit Lal, Mihir Prabhudesai, Ishita Mediratta, Adam W. Harley, Katerina Fragkiadaki

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 detection.

3D Object Detection Contrastive Learning +4

Cannot find the paper you are looking for? You can Submit a new open access paper.