| Vol-2838 urn:nbn:de:0074-2838-8 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).

# ROMCIR 2021
Reducing Online Misinformation through Credible Information Retrieval 2021

### Proceedings of the Workshop Reducing Online Misinformation through Credible Information Retrieval (ROMCIR 2021)
co-located with the 43rd European Conference on Information Retrieval (ECIR 2021)

### Lucca, Italy (On-line), April 1, 2021.

Edited by

### Fabio Saracco *
Marco Viviani **

* IMT School For Advanced Studies Lucca, NETWORKS Unit, P.zza S.Francesco 19, 55100 Lucca, Italy
** Università Degli Studi di Milano Bicocca, Department of Informatics, Systems and Communication, IKR3 Lab, Viale Sarca 336, 20126 Milan, Italy

## Table of Contents

- Overview of ROMCIR 2021: Workshop on Reducing Online Misinformation through Credible Information Retrieval
  An overview of the issues and solutions discussed in the Workshop is presented.
  Accepted papers are discussed and information about the keynote speakers and organizers of the Workshop is provided.
  In summary, there were 20 papers submitted for peer-review to this workshop. Out of these, 6 papers were accepted for this volume, as regular papers.
  Fabio Saracco, Marco Viviani;

### Session 1: Information sources and credibility

- Improving Authorship Verification using Linguistic Divergence 1-15
  Yifan Zhang, Dainis Boumber, Marjan Hosseinia, Fan Yang, Arjun Mukherjee
- Bias and truth in science evaluation: a simulation model of grant review panel discussions 16-24
  Adrián Martín Bethencourt, Junwen Luo, Thomas Feliciani

### Session 2: Malinformation and misinformation

- Consumption of Hate Speech on Twitter: A Topical Approach to Capture Networks of Hateful Users 25-34
  Sameer Gupta, Seema Nagar, Amit Anil Nanavati, Kuntal Dey, Ferdous Ahmed Barbhuiya, Sougata Mukherjea
- On the Feasibility of Using GANs for Claim Verification- Experiments and Analysis 35-46
  Amartya Hatua, Arjun Mukherjee, Rakesh M. Verma

### Session 3: Access to credible information

- Supporting verification of news articles with automated search for semantically similar articles 47-58
  Vishwani Gupta, Katharina Beckh, Sven Giesselbach, Dennis Wegener, Tim Wirtz
- Sharing retrieved information using Linked Credibility Reviews 59-65
  Ronald Denaux, Jose Manuel Gomez-Perez

2021-03-21: submitted by Fabio Saracco, metadata incl. bibliographic data published under Creative Commons CC0
2021-03-26: published on CEUR Workshop Proceedings (CEUR-WS.org, ISSN 1613-0073) |valid HTML5|