Helia Hashemi

2026

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Cost-Aware Retrieval-Augmentation Reasoning Models with Adaptive Retrieval Depth.
Helia Hashemi|Victor Rühle|Saravan Rajmohan
Proceedings of the ACM Web Conference 2026, WWW 2026, Dubai, United Arab Emirates, originally scheduled for April 13-17, 2026, rescheduled for June 29 - July 3, 2026.

2023

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Dense Retrieval Adaptation using Target Domain Description.
Helia Hashemi|Yong Zhuang|Sachith Sri Ram Kothur|Srivas Prasad|Edgar Meij|W. Bruce Croft
Proceedings of the 2023 ACM SIGIR International Conference on Theory of Information Retrieval, ICTIR 2023, Taipei, Taiwan, 23 July 2023

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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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
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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

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
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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

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.
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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.