Touché program was part of the CLEF 2021 conference program. [Videos] of the talks at the workshop.

September, 24 (times are CEST)
Touché: Argument Retrieval Workshop was held online [slides]
10:30-10:40 Touché 2021 Welcome
Alexander Bondarenko
Session 1: Argument Retrieval for Controversial Questions
10:40-10:50 Overview of Task 1 on Argument Retrieval for Controversial Questions
Lukas Gienapp
10:50-11:05 Exploring Argument Retrieval for Controversial Questions Using Retrieve and Re-rank Pipelines [paper]
Raunak Agarwal, Andrei Koniaev, Robin Schaefer
11:05-11:20 Exploring Document Expansion for Argument Retrieval [paper]
Alina Mailach, Denise Arnold, Stefan Eysoldt, Simon Kleine
11:20-11:35 Team Skeletor at Touché 2021: Argument Retrieval and Visualization for Controversial Questions [paper] [slides]
Kevin Ros, Carl Edwards, Heng Ji, ChengXiang Zhai
11:35-12:00 Lightning talks
Touché Task 1 participants
12:00-13:00 Lunch break
Session 2: Argument Retrieval for Comparative Questions
13:00-13:30 Keynote: Theory-based Argument Quality for Advanced Argument Retrieval: Opportunities and Challenges [slides]
Anne Lauscher
13:30-13:40 Overview of Task 2 on Argument Retrieval for Comparative Questions
Alexander Bondarenko
13:40-13:50 DistilBERT-based Argumentation Retrieval for Answering Comparative Questions [paper] [slides]
Alaa Alhamzeh, Mohamed Bouhaouel, Előd Egyed-Zsigmond, Jelena Mitrović
13:50-14:00 Retrieving Comparative Arguments using Ensemble Methods and Neural Information Retrieval [paper] [slides]
Viktoriia Chekalina, Alexander Panchenko
14:00-14:10 Lightning talks
Touché Task 2 participants
14:10-14:30 Panel discussion and closing remarks