Publications

2026

WSDM '26
TempRetriever: Fusion-based Temporal Dense Passage Retrieval for Time-Sensitive Questions
Abdelrahman Abdallah , Bhawna Piryani , Jonas Wallat , Avishek Anand , Adam Jatowt
WSDM '26: Proceedings of the Nineteenth ACM International Conference on Web Search and Data Mining
PAPER

2025

CIKM'25
Evaluating Robustness of LLMs in Question Answering on Multilingual Noisy OCR Data
Bhawna Piryani , Jamshid Mozafari , Abdelrahman Abdallah , Antoine Doucet , Adam Jatowt
CIKM '25: Proceedings of the 34th ACM International Conference on Information and Knowledge Management
PAPER CODE DATASET
Arxiv 2025
It's High Time: A Survey of Temporal Question Answering
Bhawna Piryani , Abdelrahman Abdallah , Jamshid Mozafari , Avishek Anand , Adam Jatowt
Arxiv
PAPER CODE
EMNLP 2025
How Good are LLM-based Rerankers? An Empirical Analysis of State-of-the-Art Reranking Models
Abdelrahman Abdallah , Bhawna Piryani , Jamshid Mozafari , Mohammed Ali , Adam Jatowt
Findings of the Association for Computational Linguistics EMNLP 2025
PAPER CODE DATASET
EMNLP 2025
DeAR: DeAR: Dual-Stage Document Reranking with Reasoning Agents via LLM Distillation
Abdelrahman Abdallah , Jamshid Mozafari , Bhawna Piryani , Adam Jatowt
Findings of the Association for Computational Linguistics EMNLP 2025
PAPER CODE
SIGIR'25
Wrong Answers Can Also Be Useful: PlausibleQA - A Large-Scale QA Dataset with Answer Plausibility Scores
Jamshid Mozafari , Abdelrahman Abdallah , Bhawna Piryani , Adam Jatowt
SIGIR '25: Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval
PAPER CODE DATASET
Arxiv 2025
HintEval: A Comprehensive Framework for Hint Generation and Evaluation for Questions
Jamshid Mozafari , Bhawna Piryani , Abdelrahman Abdallah , Adam Jatowt
Arxiv
PAPER CODE
Arxiv 2025
Rankify: A comprehensive python toolkit for retrieval, re-ranking, and retrieval-augmented generation
Abdelrahman Abdallah , Bhawna Piryani , Jamshid Mozafari , Mohammed Ali , Adam Jatowt
Arxiv
PAPER
CIKM'25
Rankarena: A unified platform for evaluating retrieval, reranking and rag with human and llm feedback
Abdelrahman Abdallah , Mahmoud Abdalla , Bhawna Piryani , Jamshid Mozafari , Mohammed Ali , Adam Jatowt
CIKM '25: Proceedings of the 34th ACM International Conference on Information and Knowledge Management
PAPER
NAACL 2025
ASRank: Zero-Shot Re-Ranking with Answer Scent for Document Retrieval
Abdelrahman Abdallah , Jamshid Mozafari , Bhawna Piryani , Adam Jatowt
Findings of the Association for Computational Linguistics: NAACL 2025
PAPER
Coling 2025
DynRank: Improving Passage Retrieval with Dynamic Zero-Shot Prompting Based on Question Classification
Abdelrahman Abdallah , Jamshid Mozafari , Bhawna Piryani , Mohammed M. Abdelgwad , Adam Jatowt
Proceedings of the 31st International Conference on Computational Linguistics
PAPER

2024

EMNLP 2024
Exploring Hint Generation Approaches for Open-Domain Question Answering
Jamshid Mozafari , Abdelrahman Abdallah , Bhawna Piryani , Adam Jatowt
Findings of the Association for Computational Linguistics: EMNLP 2024
PAPER CODE
EMNLP 2024
Detecting Temporal Ambiguity in Questions
Bhawna Piryani , Abdelrahman Abdallah , Jamshid Mozafari , Adam Jatowt
Findings of the Association for Computational Linguistics EMNLP 2024
PAPER CODE DATASET
SIGIR'24
ChroniclingAmericaQA: A Large-scale Question Answering Dataset based on Historical American Newspaper Pages
Bhawna Piryani , Jamshid Mozafari , Adam Jatowt
SIGIR '24 Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval
PAPER CODE DATASET

2023

Journal of Big Data
Exploring the state of the art in legal QA systems
Abdelrahman Abdallah , Bhawna Piryani , Adam Jatowt
Journal of Big Data, Springer
PAPER CODE

2020

JIFS
Sentiment analysis in Nepali: Exploring machine learning and lexicon-based approaches
Rajesh Piryani , Bhawna Piryani , Vivek Kumar Singh , David Pinto
Journal of Intelligent & Fuzzy Systems: Applications in Engineering and Technology
PAPER

Citation