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publications

Matches Made in Heaven: Toolkit and Large-Scale Datasets for Supervised Query Reformulation

Published in 30th ACM International Conference on Information & Knowledge Management (CIKM 2021, Core Rank: A), 2021

A large-scale dataset and toolkit for supervised query reformulation in search systems.

Recommended citation: Arabzadeh, N., Bigdeli, A., Seyedsalehi, S., Zihayat, M., & Bagheri, E. (2021). Matches Made in Heaven: Toolkit and Large-Scale Datasets for Supervised Query Reformulation. CIKM 2021.
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On the Orthogonality of Bias and Utility in Ad hoc Retrieval

Published in The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2021, Core Rank: A*), 2021

An empirical study on the relationship between bias and utility dimensions in ad hoc retrieval.

Recommended citation: Bigdeli, A., Arabzadeh, N., Seyedsalehi, S., Zihayat, M., & Bagheri, E. (2021). On the Orthogonality of Bias and Utility in Ad hoc Retrieval. SIGIR 2021.
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Bias-aware Fair Neural Ranking for Addressing Stereotypical Gender Biases

Published in 25th International Conference on Extending Database Technology (EDBT 2022, Core Rank: A), 2022

A fairness-aware neural ranking framework to mitigate gender stereotypes in retrieval systems.

Recommended citation: Seyedsalehi, S., Bigdeli, A., Arabzadeh, N., Mitra, B., Zihayat, M., & Bagheri, E. (2022). Bias-aware Fair Neural Ranking for Addressing Stereotypical Gender Biases. EDBT 2022.
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Addressing Gender-related Performance Disparities in Neural Rankers

Published in The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2022, Core Rank: A*), 2022

An empirical study addressing gender-based disparities in neural retrieval models.

Recommended citation: Seyedsalehi, S., Bigdeli, A., Arabzadeh, N., Zihayat, M., & Bagheri, E. (2022). Addressing Gender-related Performance Disparities in Neural Rankers. SIGIR 2022.
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De-Biasing Relevance Judgements for Fair Ranking

Published in 45th European Conference on Information Retrieval (ECIR 2023, Core Rank: A), 2023

A data-centric framework to correct annotator bias in relevance judgements for fair IR evaluation.

Recommended citation: Bigdeli, A., Arabzadeh, N., Seyedsalehi, S., Mitra, B., Zihayat, M., & Bagheri, E. (2023). De-Biasing Relevance Judgements for Fair Ranking. ECIR 2023.
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Neural Disentanglement of Query Difficulty and Semantics

Published in 32nd ACM International Conference on Information and Knowledge Management (CIKM 2023, Core Rank: A), 2023

A model that isolates query difficulty from semantic intent for better ranking behavior analysis.

Recommended citation: Salamat, S., Arabzadeh, N., Seyedsalehi, S., Bigdeli, A., Zihayat, M., & Bagheri, E. (2023). Neural Disentanglement of Query Difficulty and Semantics. CIKM 2023.
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Don’t Raise Your Voice, Improve Your Argument: Learning to Retrieve Convincing Arguments

Published in 45th European Conference on Information Retrieval (ECIR 2023, Core Rank: A), 2023

A learning-to-rank framework for persuasive argument retrieval from debate corpora.

Recommended citation: Salamat, S., Arabzadeh, N., Bigdeli, A., Seyedsalehi, S., Zihayat, M., & Bagheri, E. (2023). Don't Raise Your Voice, Improve Your Argument: Learning to Retrieve Convincing Arguments. ECIR 2023.
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A Contrastive Neural Disentanglement Approach for Query Performance Prediction

Published in Machine Learning Journal (Impact Factor: 4.3), 2024

Contrastive disentanglement of query attributes for robust performance prediction in retrieval.

Recommended citation: Salamat, S., Arabzadeh, N., Seyedsalehi, S., Bigdeli, A., Zihayat, M., & Bagheri, E. (2024). A Contrastive Neural Disentanglement Approach for Query Performance Prediction. Machine Learning Journal.
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Understanding and Mitigating Gender Bias in Information Retrieval Systems

Published in Foundations and Trends® in Information Retrieval (Impact Factor: 10.4), 2024

A systematic exploration of gender bias sources in IR pipelines and mitigation strategies across benchmarks.

Recommended citation: Seyedsalehi, S., Bigdeli, A., Arabzadeh, N., AlMousawi, B., Marshall, Z., Zihayat, M., & Bagheri, E. (2024). Understanding and Mitigating Gender Bias in Information Retrieval Systems. Foundations and Trends® in Information Retrieval.
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Bias-aware Curriculum Sampling for Fair Ranking

Published in The 48th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2025, Core Rank: A*), 2025

A curriculum strategy that progressively reduces ranking bias in neural retrieval systems.

Recommended citation: Seyedsalehi, S., Le, H. S., Zihayat, M., & Bagheri, E. (2025). Bias-aware Curriculum Sampling for Fair Ranking. SIGIR 2025.
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Query Performance Prediction Using Neural Query Space Proximity

Published in ACM Transactions on Intelligent Systems and Technology (Impact Factor: 6.6), 2025

A neural proximity-based model for predicting query performance using latent query representations.

Recommended citation: Bigdeli, A., Ebrahimi, S., Arabzadeh, N., Salamat, S., Seyedsalehi, S., Khodabakhsh, M., Zarinkalam, F., & Bagheri, E. (2025). Query Performance Prediction Using Neural Query Space Proximity. ACM Transactions on Intelligent Systems and Technology.
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Reinforcement Learning for Effective Few-Shot Ranking

Published in The 48th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2025, Core Rank: A*), 2025

Reinforcement learning techniques that enhance few-shot ranking tasks with minimal supervision.

Recommended citation: Soleimani, S., Ebrahimi, S., Seyedsalehi, S., Zarinkalam, F., & Bagheri, E. (2025). Reinforcement Learning for Effective Few-Shot Ranking. SIGIR 2025.
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research

talks

Gender Biases in Neural Rankers

Published:

An invited research talk focusing on quantifying and mitigating gender-related performance disparities in modern neural rankers.

teaching

Statistics and Probability

Teaching Assistant, Department of Electrical Engineering, Amirkabir University of Technology, 2017

Conducted tutorial sessions and designed weekly quizzes for undergraduate students in Statistics and Probability (2017–2019).

COE758: Digital Systems Engineering

Teaching Assistant, Department of Electrical and Computer Engineering, Toronto Metropolitan University, 2021

Led tutorials and labs in digital design, logic circuits, and hardware simulation, providing guidance on assignments and course projects.

EES512: Electric Circuits

Teaching Assistant, Department of Electrical and Computer Engineering, Toronto Metropolitan University, 2022

Conducted tutorials and labs for multiple sections of Electric Circuits, focusing on circuit analysis, problem solving, and measurement techniques (2022–2024).

ELE888: Intelligent Systems

Teaching Assistant, Department of Electrical and Computer Engineering, Toronto Metropolitan University, 2022

Facilitated tutorials and problem-solving sessions on machine learning and intelligent systems concepts, supporting course delivery and grading.

Tutorial: Gender Fairness in Information Retrieval Systems

Tutorial, 45th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2022), 2022

Co-presented a tutorial on fairness in neural retrieval systems, focusing on identifying, measuring, and mitigating gender bias.

COE848: Fundamentals of Data Engineering

Teaching Assistant, Department of Electrical and Computer Engineering, Toronto Metropolitan University, 2023

Delivered tutorials and hands-on exercises on data modeling, ETL workflows, and SQL, assisting students with assignments and grading.

ITM500: Data and Information Management

Teaching Assistant, Ted Rogers School of Management, Toronto Metropolitan University, 2023

Supported two sections of ITM500, teaching SQL, database design, and information retrieval concepts. Provided problem-solving support and graded assignments.

ITM200: Fundamentals of Programming

Instructor, Ted Rogers School of Management, Toronto Metropolitan University, 2025

Instructor for ITM200, introducing programming fundamentals, control structures, functions, and data types using Python. Responsible for lectures, assignments, and assessment.

ITM618: Business Intelligence and Analytics

Instructor, Ted Rogers School of Management, Toronto Metropolitan University, 2025

Instructor for ITM618, a senior undergraduate course focusing on business intelligence, data warehousing, and analytics-driven decision making. Responsibilities include designing course content, lecturing, and assessment.

ITM740: Artificial Intelligence in Business

Guest Lecturer, Ted Rogers School of Management, Toronto Metropolitan University, 2025

Guest lecture on applications of artificial intelligence in business contexts, focusing on fairness and bias in decision-support systems.