2022

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Stochastic Optimization of Text Set Generation for Learning Multiple Query Intent Representations
Helia Hashemi | Hamed Zamani | W. Bruce Croft
Proceedings of the 31st ACM International Conference on Information & Knowledge Management, Atlanta, GA, USA, October 17-21, 2022

2021

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Passage Similarity and Diversification in Non-factoid Question Answering
Lakshmi Vikraman | Ali Montazeralghaem | Helia Hashemi | W. Bruce Croft | James Allan
ICTIR '21: The 2021 ACM SIGIR International Conference on the Theory of Information Retrieval, Virtual Event, Canada, July 11, 2021

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Current Challenges and Future Directions in Podcast Information Access
Rosie Jones | Hamed Zamani | Markus Schedl | Ching-Wei Chen | Sravana Reddy | Ann Clifton | Jussi Karlgren | Helia Hashemi | Aasish Pappu | Zahra Nazari | Longqi Yang | Oguz Semerci | Hugues Bouchard | Ben Carterette
SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, Virtual Event, Canada, July 11-15, 2021

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Learning Multiple Intent Representations for Search Queries
Helia Hashemi | Hamed Zamani | W. Bruce Croft
CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021

2020

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Guided Transformer: Leveraging Multiple External Sources for Representation Learning in Conversational Search
Helia Hashemi | Hamed Zamani | W. Bruce Croft
Proceedings of the 43rd International ACM SIGIR conference on research and development in Information Retrieval, SIGIR 2020, Virtual Event, China, July 25-30, 2020

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ANTIQUE: A Non-factoid Question Answering Benchmark
Helia Hashemi | Mohammad Aliannejadi | Hamed Zamani | W. Bruce Croft
Advances in Information Retrieval - 42nd European Conference on IR Research, ECIR 2020, Lisbon, Portugal, April 14-17, 2020, Proceedings, Part II

2019

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UMass at TREC 2019 Conversational Assistance Track
Helia Hashemi | W. Bruce Croft
Proceedings of the Twenty-Eighth Text REtrieval Conference, TREC 2019, Gaithersburg, Maryland, USA, November 13-15, 2019

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Performance Prediction for Non-Factoid Question Answering
Helia Hashemi | Hamed Zamani | W. Bruce Croft
Proceedings of the 2019 ACM SIGIR International Conference on Theory of Information Retrieval, ICTIR 2019, Santa Clara, CA, USA, October 2-5, 2019