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Ashwin Paranjape

4 accepted papers

2025

Promptriever: Instruction-Trained Retrievers Can Be Prompted Like Language Models

ICLR 2025poster

Instruction-tuned language models (LM) are able to respond to imperative commands, providing a more natural user interface compared to their base counterparts. In this work, we present Promptriever, the first retrieval model able to be prompted like an LM. To train Promptriever, we curate and releas…

2022

Hindsight: Posterior-guided training of retrievers for improved open-ended generation

ICLR 2022poster

Many text generation systems benefit from retrieving passages from a textual knowledge corpus (e.g., Wikipedia) and using them to generate the output. For open-ended generation tasks, like generating informative utterances in conversations, many varied passages $z$ are relevant to the context $x$ bu…

Cited by 49SourcePDFScholar
2022

You Only Need One Model for Open-domain Question Answering

EMNLP 2022main

Recent approaches to Open-domain Question Answering refer to an external knowledge base using a retriever model, optionally rerank passages with a separate reranker model and generate an answer using another reader model. Despite performing related tasks, the models have separate parameters and are…

Cited by 28SourcePDFScholar
2021

Human-like informative conversations: Better acknowledgements using conditional mutual information

NAACL 2021long

This work aims to build a dialogue agent that can weave new factual content into conversations as naturally as humans. We draw insights from linguistic principles of conversational analysis and annotate human-human conversations from the Switchboard Dialog Act Corpus to examine humans strategies for…