| Vol-3477 urn:nbn:de:0074-3477-8 Copyright © 2023 for the individual papers by the papers' authors. Copyright © 2023 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).

# IACT 2023
The 1st International Workshop on Implicit Author Characterization from Texts for Search and Retrieval 2023

### Proceedings of the IACT - The 1st International Workshop on Implicit Author Characterization from Texts for Search and Retrieval
held in conjunction with the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2023)

### Taipei, Taiwan, July 27, 2023.

Edited by

### Marina Litvak1
Irina Rabaev1
Ricardo Campos2,3,4
Alípio Mário Jorge3,5
Adam Jatowt6

1 Shamoon Academic College of Engineering, 56 Bialik St. Be'er Sheva 8410802, Israel
2 University of Beira Interior, Rua Marquês D'Ávila e Bolama 6201-001 Covilhã, Portugal
3 INESC TEC, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
4 Ci2 - Smart Cities Research Center - Polytechnic Institute of Tomar, Quinta do Contador - Estrada da Serra, 2300-313 Tomar, Portugal
5 FCUP, University of Porto, Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal
6 University of Innsbruck, Innrain 52, 6020 Innsbruck, Austria

## Table of Contents

### Preface

- Preface

### Invited Talks

- 20 Years of Analyzing Multilingual Propaganda Content on the Web 1-2
  Mark last
- The Promises and Perils of AI Information Retrieval 3
  Valia Kordoni

### Research Papers

- Exploration Reduction by Selecting a Hierarchical Order of Implicit Author Demographic Characterizations 4-12
  Chung-Chi Chen, Hen-Hsen Huang, Hsin-Hsi Chen
- NLP-based Screening for IT Job Vacancies: A Case Study 13-22
  Natalia Vanetik, Alona Kolesnev, Genady Kogan
- “I Slept Like a Baby”: Using Human Traits To Characterize Deceptive ChatGPT and Human Text 23-37
  Salvatore Giorgi, David M. Markowitz, Nikita Soni Vasudha Varadarajan, Siddharth Mangalik, H. Andrew Schwartz
- What if ChatGPT wrote the Abstract? - Explainable Multi-Authorship Attribution with a Data Augmentation Strategy 38-48
  Kanishka Silva, Ingo Frommholz

### The CoLiE competition report

- The Competition on Automatic Classification of Literary Epochs 49-56
  Irina Rabaev, Marina Litvak, Vladimir Younkin, Ricardo Campos, Alípio Mário Jorge, Adam Jatowt

2023-08-13: submitted by Irina Rabaev and Marina Litvak, metadata incl. bibliographic data published under Creative Commons CC0
2023-09-09: published on CEUR Workshop Proceedings (CEUR-WS.org, ISSN 1613-0073) |valid HTML5|