| Vol-2911 urn:nbn:de:0074-2911-5 Copyright © 2021 for the individual papers by the papers' authors. Copyright © 2021 for the volume as a collection by its editors. This volume and its papers are published under the Creative Commons License Attribution 4.0 International (CC BY 4.0).

# CSR-Sim4IR 2021
Causality in Search and Recommendation and Simulation of Information Retrieval Evaluation 2021

### Joint Proceedings of the Causality in Search and Recommendation (CSR) and Simulation of Information Retrieval Evaluation (Sim4IR) Workshops 2021.
Co-located with the 44th International ACM SIGIR Conference on Research and Development in Information Retrieval (ACM-SIGIR 2021).
Online, July 15, 2021

Edited by

### Krisztian Balog, Universitetet i Stavanger, Norway
Xianjie Chen, Facebook Research
Xu Chen, Renmin University of China, China
David Maxwell, Technische Universiteit Delft, The Netherlands
Paul Thomas, Microsoft Canberra, Australia
Shuo Zhang, Bloomberg AI, England
Yi Zhang, University of California, Santa Cruz, USA
Yongfeng Zhang, Rutgers University, USA

## Table of Contents

### CSR 2021

- ExDocS: Evidence based Explainable Document Search 1-7
  Sayantan Polley, Atin Janki, Marcus Thiel, Juliane Hoebel-Mueller, Andreas Nuernberger
- A Large-scale Dataset for Decision Making Algorithms 8-12
  Yuta Saito, Shunsuke Aihara, Megumi Matsutani, Yusuke Narita
- Learning Causal Explanations for Recommendation 13-25
  Shuyuan Xu, Yunqi Li, Shuchang Liu, Zuohui Fu, Yingqiang Ge, Xu Chen, Yongfeng Zhang
- Unbiased Counterfactual Estimation of Ranking Metrics 26-31
  Haining Yu

### Sim4IR 2021

- State of the Art of User Simulation Approaches for Conversational Information Retrieval 32-37
  Pierre Erbacher, Laure Soulier, Ludovic Denoyer
- Assessing Query Suggestions for Search Session Simulation 38-45
  Sebastian Günther, Matthias Hagen
- ULTRE Framework: a Framework for Unbiased Learning to Rank Evaluation based on Simulation of User Behavior 46-51
  Yurou Zhao, Jiaxin Mao, Qingyao Ai

2021-07-13: submitted by Shuo Zhang, metadata incl. bibliographic data published under Creative Commons CC0
2021-07-18: published on CEUR Workshop Proceedings (CEUR-WS.org, ISSN 1613-0073) |valid HTML5|