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Imed Zitouni

4 accepted papers

2023

SamToNe: Improving Contrastive Loss for Dual Encoder Retrieval Models with Same Tower Negatives

ACL 2023findings

Dual encoders have been used for retrieval tasks and representation learning with good results. A standard way to train dual encoders is using a contrastive loss with in-batch negatives. In this work, we propose an improved contrastive learning objective by adding queries or documents from the same…

Cited by 6SourcePDFScholar
2022

Exploring Dual Encoder Architectures for Question Answering

EMNLP 2022main

Dual encoders have been used for question-answering (QA) and information retrieval (IR) tasks with good results. There are two major types of dual encoders, Siamese Dual Encoders (SDE), with parameters shared across two encoders, and Asymmetric Dual Encoder (ADE), with two distinctly parameterized e…

Cited by 20SourcePDFScholar
2017

Hyperarticulation detection in repetitive voice queries using pairwise comparison for improved speech recognition

ICASSP 2017accepted

Automatic speech recognition systems can benefit from cues in user voice such as hyperarticulation. Traditional approaches typically attempt to define and detect an absolute state of hyperarticulation, which is very difficult, especially on short voice queries. We present a novel approach for hypera…

Cited by 0SourceScholar
2017

Off-policy evaluation for slate recommendation

NeurIPS 2017oral

This paper studies the evaluation of policies that recommend an ordered set of items (e.g., a ranking) based on some context---a common scenario in web search, ads, and recommendation. We build on techniques from combinatorial bandits to introduce a new practical estimator that uses logged data to e…