Rishiraj Saha Roy

2026

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Context Engineering for Agentic Data Science.
Rishiraj Saha Roy|Chris Hinze|Luzian Hahn|Fabian Küch
Advances in Information Retrieval - 48th European Conference on Information Retrieval, ECIR 2026, Delft, The Netherlands, March 29 - April 2, 2026, Proceedings, Part IV

2025

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Evidence Contextualization and Counterfactual Attribution for Conversational QA over Heterogeneous Data with RAG Systems.
Rishiraj Saha Roy|Joel Schlotthauer|Chris Hinze|Andreas Foltyn|Luzian Hahn|Fabian Küch
Proceedings of the Eighteenth ACM International Conference on Web Search and Data Mining, WSDM 2025, Hannover, Germany, March 10-14, 2025

2024

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Robust Training for Conversational Question Answering Models with Reinforced Reformulation Generation.
Magdalena Kaiser|Rishiraj Saha Roy|Gerhard Weikum
Proceedings of the 17th ACM International Conference on Web Search and Data Mining, WSDM 2024, Merida, Mexico, March 4-8, 2024
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CompMix: A Benchmark for Heterogeneous Question Answering.
Philipp Christmann|Rishiraj Saha Roy|Gerhard Weikum
Companion Proceedings of the ACM on Web Conference 2024, WWW 2024, Singapore, Singapore, May 13-17, 2024

2023

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Explainable Conversational Question Answering over Heterogeneous Sources via Iterative Graph Neural Networks.
Philipp Christmann|Rishiraj Saha Roy|Gerhard Weikum
Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2023, Taipei, Taiwan, July 23-27, 2023

2022

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Conversational Question Answering on Heterogeneous Sources.
Philipp Christmann|Rishiraj Saha Roy|Gerhard Weikum
SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022
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Beyond NED: Fast and Effective Search Space Reduction for Complex Question Answering over Knowledge Bases.
Philipp Christmann|Rishiraj Saha Roy|Gerhard Weikum
WSDM '22: The Fifteenth ACM International Conference on Web Search and Data Mining, Virtual Event / Tempe, AZ, USA, February 21 - 25, 2022

2021

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Complex Temporal Question Answering on Knowledge Graphs.
Zhen Jia|Soumajit Pramanik|Rishiraj Saha Roy|Gerhard Weikum
CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021
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Reinforcement Learning from Reformulations in Conversational Question Answering over Knowledge Graphs.
Magdalena Kaiser|Rishiraj Saha Roy|Gerhard Weikum
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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Counterfactual Explanations for Neural Recommenders.
Khanh Hiep Tran|Azin Ghazimatin|Rishiraj Saha Roy
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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ELIXIR: Learning from User Feedback on Explanations to Improve Recommender Models.
Azin Ghazimatin|Soumajit Pramanik|Rishiraj Saha Roy|Gerhard Weikum
WWW '21: The Web Conference 2021, Virtual Event / Ljubljana, Slovenia, April 19-23, 2021.

2020

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Towards Query Logs for Privacy Studies: On Deriving Search Queries from Questions.
Asia J. Biega|Jana Schmidt|Rishiraj Saha Roy
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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Question Answering over Curated and Open Web Sources.
Rishiraj Saha Roy|Avishek Anand
ICTIR '20: The 2020 ACM SIGIR International Conference on the Theory of Information Retrieval, Virtual Event, Norway, September 14-17, 2020
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Conversational Question Answering over Passages by Leveraging Word Proximity Networks.
Magdalena Kaiser|Rishiraj Saha Roy|Gerhard Weikum
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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Question Answering over Curated and Open Web Sources.
Rishiraj Saha Roy|Avishek Anand
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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PRINCE: Provider-side Interpretability with Counterfactual Explanations in Recommender Systems.
Azin Ghazimatin|Oana Balalau|Rishiraj Saha Roy|Gerhard Weikum
WSDM '20: The Thirteenth ACM International Conference on Web Search and Data Mining, Houston, TX, USA, February 3-7, 2020

2019

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Look before you Hop: Conversational Question Answering over Knowledge Graphs Using Judicious Context Expansion.
Philipp Christmann|Rishiraj Saha Roy|Abdalghani Abujabal|Jyotsna Singh|Gerhard Weikum
Proceedings of the 28th ACM International Conference on Information and Knowledge Management, CIKM 2019, Beijing, China, November 3-7, 2019.
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Answering Complex Questions by Joining Multi-Document Evidence with Quasi Knowledge Graphs.
Xiaolu Lu|Abdalghani Abujabal|Benno Stein|Soumajit Pramanik|Yafang Wang|Moshe Koppel|Efstathios Stamatatos|Rishiraj Saha Roy|Gerhard Weikum|Benno Stein|Abdalghani Abujabal|Yafang Wang|Moshe Koppel|Efstathios Stamatatos|Gerhard Weikum
Proceedings of the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2019, Paris, France, July 21-25, 2019.
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CROWN: Conversational Passage Ranking by Reasoning over Word Networks.
Magdalena Kaiser|Rishiraj Saha Roy|Gerhard Weikum
Proceedings of the Twenty-Eighth Text REtrieval Conference, TREC 2019, Gaithersburg, Maryland, USA, November 13-15, 2019.
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FAIRY: A Framework for Understanding Relationships Between Users' Actions and their Social Feeds.
Azin Ghazimatin|Rishiraj Saha Roy|Gerhard Weikum
Proceedings of the Twelfth ACM International Conference on Web Search and Data Mining, WSDM 2019, Melbourne, VIC, Australia, February 11-15, 2019

2018

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TEQUILA: Temporal Question Answering over Knowledge Bases.
Zhen Jia|Abdalghani Abujabal|Rishiraj Saha Roy|Jannik Strötgen|Gerhard Weikum
Proceedings of the 27th ACM International Conference on Information and Knowledge Management, CIKM 2018, Torino, Italy, October 22-26, 2018
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Never-Ending Learning for Open-Domain Question Answering over Knowledge Bases.
Abdalghani Abujabal|Rishiraj Saha Roy|Mohamed Yahya|Gerhard Weikum
Proceedings of the 2018 World Wide Web Conference on World Wide Web, WWW 2018, Lyon, France, April 23-27, 2018
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TempQuestions: A Benchmark for Temporal Question Answering.
Zhen Jia|Abdalghani Abujabal|Rishiraj Saha Roy|Jannik Strötgen|Gerhard Weikum
Companion Proceedings of the The Web Conference 2018, WWW 2018, Lyon , France, April 23-27, 2018

2017

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Privacy of Hidden Profiles: Utility-Preserving Profile Removal in Online Forums.
Sedigheh Eslami|Asia J. Biega|Rishiraj Saha Roy|Gerhard Weikum
Proceedings of the 2017 ACM on Conference on Information and Knowledge Management, CIKM 2017, Singapore, November 06 - 10, 2017
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Leveraging Site Search Logs to Identify Missing Content on Enterprise Webpages.
Harsh Jhamtani|Fan Zhang|Yang Song|Rishiraj Saha Roy|Weidong Cai|Niyati Chhaya|Eric Nyberg|Adrien Depeursinge
Advances in Information Retrieval - 39th European Conference on IR Research, ECIR 2017, Aberdeen, UK, April 8-13, 2017, Proceedings
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Privacy through Solidarity: A User-Utility-Preserving Framework to Counter Profiling.
Joanna Asia Biega|Rishiraj Saha Roy|Gerhard Weikum
Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Shinjuku, Tokyo, Japan, August 7-11, 2017

2016

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Syntactic complexity of Web search queries through the lenses of language models, networks and users.
Rishiraj Saha Roy|Smith Agarwal|Niloy Ganguly|Monojit Choudhury
Information Processing and Management 2016 Volume 52 Issue 5
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Improving Document Ranking for Long Queries with Nested Query Segmentation.
Rishiraj Saha Roy|Anusha Suresh|Niloy Ganguly|Monojit Choudhury
Advances in Information Retrieval - 38th European Conference on IR Research, ECIR 2016, Padua, Italy, March 20-23, 2016. Proceedings

2015

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Probabilistic Deduplication of Anonymous Web Traffic.
Rishiraj Saha Roy|Ritwik Sinha|Niyati Chhaya|Shiv Kumar Saini
Proceedings of the 24th International Conference on World Wide Web Companion, WWW 2015, Florence, Italy, May 18-22, 2015 - Companion Volume

2014

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Improving unsupervised query segmentation using parts-of-speech sequence information.
Rishiraj Saha Roy|Yogarshi Vyas|Niloy Ganguly|Monojit Choudhury
The 37th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR '14, Gold Coast , QLD, Australia - July 06 - 11, 2014

2013

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Overview of the FIRE 2013 Track on Transliterated Search.
Rishiraj Saha Roy|Monojit Choudhury|Prasenjit Majumder|Komal Agarwal
Proceedings of the 5th 2013 Forum on Information Retrieval Evaluation, FIRE '13, New Delhi, India, December 4-6, 2013
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Analyzing linguistic structure of web search queries.
Rishiraj Saha Roy
22nd International World Wide Web Conference, WWW '13, Rio de Janeiro, Brazil, May 13-17, 2013, Companion Volume
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Place value: word position shifts vital to search dynamics.
Rishiraj Saha Roy|Anusha Suresh|Niloy Ganguly|Monojit Choudhury
22nd International World Wide Web Conference, WWW '13, Rio de Janeiro, Brazil, May 13-17, 2013, Companion Volume

2012

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An IR-based evaluation framework for web search query segmentation.
Elad Yom-Tov|Rishiraj Saha Roy|Niloy Ganguly|Monojit Choudhury|Rishiraj Saha Roy|Elad Yom-Tov|Srivatsan Laxman
The 35th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '12, Portland, OR, USA, August 12-16, 2012

2011

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Unsupervised query segmentation using only query logs.
Nikita Mishra|Rishiraj Saha Roy|Niloy Ganguly|Srivatsan Laxman|Monojit Choudhury
Proceedings of the 20th International Conference on World Wide Web, WWW 2011, Hyderabad, India, March 28 - April 1, 2011 (Companion Volume)