All Stories

  1. Pathways of Thoughts: Multi-Directional Thinking for Long-form Personalized Question Answering

    Article • April 2026, ACM (Association for Computing Machinery)

    Alireza Salemi, Hamed Zamani

  2. ProActLLM: Proactive Conversational Information Seeking with Large Language Models

    Article • November 2025, ACM (Association for Computing Machinery)

    Hamed Zamani, negar arabzadeh

  3. Learning to Rank for Multiple Retrieval-Augmented Models through Iterative Utility Maximization

    Article • July 2025, ACM (Association for Computing Machinery)

    Alireza Salemi, Hamed Zamani

  4. Comparing Retrieval-Augmentation and Parameter-Efficient Fine-Tuning for Privacy-Preserving Personalization of Large Language Models

    Article • July 2025, ACM (Association for Computing Machinery)

    Alireza Salemi, Hamed Zamani

  5. Reliable Annotations with Less Effort: Evaluating LLM-Human Collaboration in Search Clarifications

    Article • July 2025, ACM (Association for Computing Machinery)

    Leila Tavakoli, Hamed Zamani

  6. Distillation and Refinement of Reasoning in Small Language Models for Document Re-ranking

    Article • July 2025, ACM (Association for Computing Machinery)

    Hamed Zamani

  7. Bridging Personalization and Control in Scientific Personalized Search

    Article • July 2025, ACM (Association for Computing Machinery)

    Hamed Zamani

  8. The Second Tutorial on Retrieval-Enhanced Machine Learning: Synthesis and Opportunities

    Article • July 2025, ACM (Association for Computing Machinery)

    To Eun Kim, Hamed Zamani, Alireza Salemi

  9. Scaling Sparse and Dense Retrieval in Decoder-Only LLMs

    Article • July 2025, ACM (Association for Computing Machinery)

    Hamed Zamani

  10. Hypencoder: Hypernetworks for Information Retrieval

    Article • July 2025, ACM (Association for Computing Machinery)

    Hamed Zamani

  11. Pre-Trained Models for Search and Recommendation: Introduction to the Special Issue—Part 2

    Article • ACM Transactions on Information Systems, July 2025, ACM (Association for Computing Machinery)

    Aixin Sun, Hamed Zamani

  12. Accelerating Retrieval-Augmented Generation

    Article • March 2025, ACM (Association for Computing Machinery)

    Alireza Salemi, Hamed Zamani

  13. Pre-trained Models for Search and Recommendation: Introduction to the Special Issue - Part 1

    Article • ACM Transactions on Information Systems, January 2025, ACM (Association for Computing Machinery)

    Aixin Sun, Hamed Zamani

  14. Retrieval-Enhanced Machine Learning: Synthesis and Opportunities

    Article • December 2024, ACM (Association for Computing Machinery)

    To Eun Kim, Alireza Salemi, Hamed Zamani

  15. Online and Offline Evaluation in Search Clarification

    Article • ACM Transactions on Information Systems, November 2024, ACM (Association for Computing Machinery)

    Leila Tavakoli, Mark Sanderson, Hamed Zamani, Leila Tavakoli

  16. Special Issue on Conversational Information Seeking

    Article • ACM Transactions on the Web, October 2024, ACM (Association for Computing Machinery)

    Hamed Zamani

  17. First Workshop on Generative AI for Recommender Systems and Personalization

    Article • August 2024, ACM (Association for Computing Machinery)

    Hamed Zamani

  18. Stochastic RAG: End-to-End Retrieval-Augmented Generation through Expected Utility Maximization

    Article • July 2024, ACM (Association for Computing Machinery)

    Hamed Zamani

  19. Third Workshop on Personalization and Recommendations in Search (PaRiS)

    Article • July 2024, ACM (Association for Computing Machinery)

    Hamed Zamani, Hongning Wang

  20. Towards a Search Engine for Machines: Unified Ranking for Multiple Retrieval-Augmented Large Language Models

    Article • July 2024, ACM (Association for Computing Machinery)

    Hamed Zamani, Alireza Salemi

  21. The Second Workshop on Large Language Models for Individuals, Groups, and Society

    Article • July 2024, ACM (Association for Computing Machinery)

    Hongning Wang, Hamed Zamani

  22. ProCIS: A Benchmark for Proactive Retrieval in Conversations

    Article • July 2024, ACM (Association for Computing Machinery)

    Hamed Zamani

  23. Planning Ahead in Generative Retrieval: Guiding Autoregressive Generation through Simultaneous Decoding

    Article • July 2024, ACM (Association for Computing Machinery)

    Hamed Zamani

  24. Evaluating Retrieval Quality in Retrieval-Augmented Generation

    Article • July 2024, ACM (Association for Computing Machinery)

    Hamed Zamani, Alireza Salemi

  25. Optimization Methods for Personalizing Large Language Models through Retrieval Augmentation

    Article • July 2024, ACM (Association for Computing Machinery)

    Alireza Salemi, Hamed Zamani

  26. Scalable and Effective Generative Information Retrieval

    Article • May 2024, ACM (Association for Computing Machinery)

    Hamed Zamani

  27. WSDM 2024 Workshop on Large Language Models for Individuals, Groups, and Society

    Article • March 2024, ACM (Association for Computing Machinery)

    Hamed Zamani, Hongning Wang

  28. The 3rd International Workshop on Interactive and Scalable Information Retrieval Methods for eCommerce (ISIR-eCom 2024)

    Article • March 2024, ACM (Association for Computing Machinery)

    Hamed Zamani, linsey pang

  29. Generalized Weak Supervision for Neural Information Retrieval

    Article • ACM Transactions on Information Systems, February 2024, ACM (Association for Computing Machinery)

    Hamed Zamani

  30. Large Language Model Augmented Narrative Driven Recommendations

    Article • September 2023, ACM (Association for Computing Machinery)

    Hamed Zamani

  31. Pre-Training Multi-Modal Dense Retrievers for Outside-Knowledge Visual Question Answering

    Article • August 2023, ACM (Association for Computing Machinery)

    Alireza Salemi, Hamed Zamani

  32. A Personalized Dense Retrieval Framework for Unified Information Access

    Article • July 2023, ACM (Association for Computing Machinery)

    Hamed Zamani

  33. Editable User Profiles for Controllable Text Recommendations

    Article • July 2023, ACM (Association for Computing Machinery)

    Hamed Zamani

  34. FiD-Light: Efficient and Effective Retrieval-Augmented Text Generation

    Article • July 2023, ACM (Association for Computing Machinery)

    Hamed Zamani

  35. Soft Prompt Decoding for Multilingual Dense Retrieval

    Article • July 2023, ACM (Association for Computing Machinery)

    Hamed Zamani

  36. Multivariate Representation Learning for Information Retrieval

    Article • July 2023, ACM (Association for Computing Machinery)

    Hamed Zamani

  37. A Symmetric Dual Encoding Dense Retrieval Framework for Knowledge-Intensive Visual Question Answering

    Article • July 2023, ACM (Association for Computing Machinery)

    Hamed Zamani, Alireza Salemi

  38. SIGIR 2023 Workshop on Retrieval Enhanced Machine Learning (REML @ SIGIR 2023)

    Article • July 2023, ACM (Association for Computing Machinery)

    Hamed Zamani

  39. The 2nd Workshop on Interactive and Scalable Information Retrieval Methods for eCommerce (ISIR-eCom)

    Article • April 2023, ACM (Association for Computing Machinery)

    Hamed Zamani, linsey pang

  40. Tutorials at The Web Conference 2023

    Article • April 2023, ACM (Association for Computing Machinery)

    Dr Olivier Jeunen, Liat Levontin, Josiah Poon, Amit Sheth, Johann Trippas, Dr Shoujin Wang, Jaemin Yoo, Hamed Zamani, Meike Zehlike, Xikun ZHANG, Yushan Jiang, Henry Weld, Haoyang Li, Caren Han, Hande Kucuk McGinty

  41. Revisiting Open Domain Query Facet Extraction and Generation

    Article • August 2022, ACM (Association for Computing Machinery)

    Hamed Zamani

  42. Stochastic Retrieval-Conditioned Reranking

    Article • August 2022, ACM (Association for Computing Machinery)

    Hamed Zamani

  43. Conversational Information Seeking

    Article • July 2022, ACM (Association for Computing Machinery)

    Johann Trippas, Hamed Zamani

  44. Curriculum Learning for Dense Retrieval Distillation

    Article • July 2022, ACM (Association for Computing Machinery)

    Hamed Zamani

  45. MIMICS-Duo

    Article • July 2022, ACM (Association for Computing Machinery)

    Leila Tavakoli, Hamed Zamani, Mark Sanderson, Johanne Trippas

  46. Retrieval-Enhanced Machine Learning

    Article • July 2022, ACM (Association for Computing Machinery)

    Hamed Zamani

  47. Conversational Search and Recommendation: Introduction to the Special Issue

    Article • ACM Transactions on Information Systems, October 2021, ACM (Association for Computing Machinery)

    Mark Sanderson, Hamed Zamani

  48. Learning Multiple Intent Representations for Search Queries

    Article • October 2021, ACM (Association for Computing Machinery)

    Hamed Zamani

  49. Context-aware Target Apps Selection and Recommendation for Enhancing Personal Mobile Assistants

    Article • ACM Transactions on Information Systems, July 2021, ACM (Association for Computing Machinery)

    Hamed Zamani

  50. Improving Transformer-Kernel Ranking Model Using Conformer and Query Term Independence

    Article • July 2021, ACM (Association for Computing Machinery)

    Hamed Zamani

  51. Passage Retrieval for Outside-Knowledge Visual Question Answering

    Article • July 2021, ACM (Association for Computing Machinery)

    Hamed Zamani

  52. Current Challenges and Future Directions in Podcast Information Access

    Article • July 2021, ACM (Association for Computing Machinery)

    Hamed Zamani

  53. Learning Robust Dense Retrieval Models from Incomplete Relevance Labels

    Article • July 2021, ACM (Association for Computing Machinery)

    Hamed Zamani

  54. Generalizing Discriminative Retrieval Models using Generative Tasks

    Article • April 2021, ACM (Association for Computing Machinery)

    Hamed Zamani

  55. Tip of the Tongue Known-Item Retrieval

    Article • March 2021, ACM (Association for Computing Machinery)

    Hamed Zamani

  56. Generating Clarifying Questions for Information Retrieval

    Article • April 2020, ACM (Association for Computing Machinery)

    Hamed Zamani

  57. Neural models for information retrieval without labeled data

    Article • ACM SIGIR Forum, December 2019, ACM (Association for Computing Machinery)

    Hamed Zamani

  58. An Analysis of Approaches Taken in the ACM RecSys Challenge 2018 for Automatic Music Playlist Continuation

    Article • ACM Transactions on Intelligent Systems and Technology, November 2019, ACM (Association for Computing Machinery)

    Hamed Zamani

  59. Performance Prediction for Non-Factoid Question Answering

    Article • September 2019, ACM (Association for Computing Machinery)

    Hamed Zamani

  60. Analyzing and Predicting News Popularity in an Instant Messaging Service

    Article • July 2019, ACM (Association for Computing Machinery)

    Hamed Zamani

  61. Asking Clarifying Questions in Open-Domain Information-Seeking Conversations

    Article • July 2019, ACM (Association for Computing Machinery)

    Hamed Zamani

  62. From Neural Re-Ranking to Neural Ranking

    Article • October 2018, ACM (Association for Computing Machinery)

    Hamed Zamani

  63. In Situ and Context-Aware Target Apps Selection for Unified Mobile Search

    Article • October 2018, ACM (Association for Computing Machinery)

    Hamed Zamani

  64. Neural Query Performance Prediction using Weak Supervision from Multiple Signals

    Article • June 2018, ACM (Association for Computing Machinery)

    Hamed Zamani

  65. Universal Approximation Functions for Fast Learning to Rank

    Article • June 2018, ACM (Association for Computing Machinery)

    Hamed Zamani

  66. SIGIR 2018 Workshop on Learning from Limited or Noisy Data for Information Retrieval

    Article • June 2018, ACM (Association for Computing Machinery)

    Hamed Zamani, Hang Li

  67. ACM SIGIR Student Liaison Program

    Article • ACM SIGIR Forum, February 2018, ACM (Association for Computing Machinery)

    Jiaxin Mao, Johann Trippas, Hamed Zamani

  68. Neural Ranking Models with Multiple Document Fields

    Article • February 2018, ACM (Association for Computing Machinery)

    Hamed Zamani

  69. Improving Retrieval Performance for Verbose Queries via Axiomatic Analysis of Term Discrimination Heuristic

    Article • August 2017, ACM (Association for Computing Machinery)

    Hamed Zamani, Azadeh Shakery

  70. Relevance-based Word Embedding

    Article • August 2017, ACM (Association for Computing Machinery)

    Hamed Zamani

  71. Word Embedding Causes Topic Shifting; Exploit Global Context!

    Article • August 2017, ACM (Association for Computing Machinery)

    Hamed Zamani

  72. Situational Context for Ranking in Personal Search

    Article • April 2017, ACM (Association for Computing Machinery)

    Hamed Zamani

  73. Pseudo-Relevance Feedback Based on Matrix Factorization

    Article • October 2016, ACM (Association for Computing Machinery)

    Hamed Zamani, Azadeh Shakery

  74. Axiomatic Analysis for Improving the Log-Logistic Feedback Model

    Article • July 2016, ACM (Association for Computing Machinery)

    Azadeh Shakery, Hamed Zamani