Ehsan Kamalloo

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My name is Ehsan (pronounced /eh☀️/ or /ih☀️/, or even /e☀️/). I am a Research Scientist in the Conversational Assistant team at ServiceNow Resaerch.

I am broadly interested in the intersection of natural language processing and information retrieval. My goal is to facilitate information access over massive unstructured materials via:

  • Building scalable and robust retrieval systems that are suitable for deployment “in the wild”,
  • Data-centric strategies to systematically improve data quality and to overcome bias in data.

Prior to this, I was a Post-doctoral Fellow at the David R. Cheriton School of Computer Science, University of Waterloo, hosted by Jimmy Lin. I completed my PhD at the University of Alberta, advised by Davood Rafiei. I was also fortunate enough to collaborate with Charles Clarke and Siva Reddy. I also interned as a researcher at Huawei Noah’s Ark Lab in Montreal and worked with Mehdi Rezagholizadeh and Ali Ghodsi. Before PhD, I was working as a software engineer.

news

Jan 2024 Joined ServiceNow Research as a Research Scientist in the Conversational Assistant team.
Jul 2023 HAGRID icon, a new dataset for generative search with citations, released. [Paper] [Dataset]
May 2023 MIRACL 🌍🙌🌏 got accepted to TACL.
May 2023 Our paper “Evaluating Embedding APIs for Information Retrieval” got accepted at ACL 2023 Industry Track. [Paper]
May 2023 Our paper “Evaluating Open-Domain Question Answering in the Era of Large Language Models” got accepted at ACL 2023 (oral). [Paper] [Code]
Apr 2023 Our paper “Limitations of Open-Domain Question Answering Benchmarks for Document-level Reasoning” got accepted at SIGIR 2023. [Paper]
Jan 2023 Started postdoc at University of Waterloo with Jimmy Lin.
Oct 2022 MIRACL 🌍🙌🌏 dataset and paper released.
Sep 2022 MIRACL 🌍🙌🌏 competition on multilingual retrieval kicked off at WSDM Cup 2023. [Twitter]