---

Fachgruppe Information Retrieval

(SIG Information Retrieval)

The workshop Information Retrieval 2021 of the Special Interest Group on Information Retrieval within the German Gesellschaft für Informatik (GI) provides a forum for scientific discussion and the exchange of ideas. It takes place in the context of the LWDA “Learning, Knowledge, Data, Analysis” workshop week at Ludwig-Maximilians University of Munich, Germany. This workshop continues a successful series of conferences and workshops of the GI Special Interest Group on Information Retrieval (http://fg-retrieval.gi.de).

Submissions should address current issues in any area of Information Retrieval. We invite submissions, both from industry and academia, describing:

• Original research contributions
• Ongoing and recently finished research at the graduate level (M.Sc./Ph.D.)
• Running research projects or project proposals
• Resources (e.g., novel testbeds or software tools)
• Negative results (including a careful failure analysis)
• Visions, ideas, and positions
• Abstracts of papers recently published at other renowned conferences no earlier than 2019

---

Schedule

Wednesday, Sep 1st, 13:30-16:00

• 13:30 Introduction and Welcome

• 13:40
  Martin Potthast, Sebastian Günther, Janek Bevendorff, Jan Philipp Bittner, Alexander Bondarenko, Maik Fröbe, Christian Kahmann, Andreas Niekler, Michael Völske, Benno Stein and Matthias Hagen: The Information Retrieval Anthology

• 14:05
  Fabian Haak: Emojis in Lexicon-Based Sentiment Analysis: Creating Emoji Sentiment Lexicons from Unlabeled Corpora

• 14:30
  Khanh Hiep Tran, Azin Ghazimatin and Rishiraj Saha Roy: Counterfactual Explanations for Neural Recommenders

• 14:55
  Timo Breuer, Nicola Ferro, Norbert Fuhr, Maria Maistro, Tetsuya Sakai, Philipp Schaer and Ian Soboroff: How to Measure the Reproducibility of System-oriented IR Experiments

• 15:20
  Dirk Lewandowski, Sebastian Sünkler and Nurce Yagci: Der Einfluss der Suchmaschinenoptimierung auf die Ergebnisse von Google: Ein mehrdimensionaler Ansatz zur Erkennung von SEO

• 15:45 End of Session

Keynote 2

• 16:00
  Arjen de Vries: You will want to rank your text data with a database too!

Thursday, Sep 2nd, 13:30-16:00

• 13:30 Introduction and Welcome

• 13:40
  Edgar Meij: Keynote: Search and Discovery for Finance

• 14:40
  Jurek Leonhardt, Fabian Beringer and Avishek Anand: Exploiting Sentence-Level Representations for Passage Ranking

• 15:05
  Magdalena Kaiser, Rishiraj Saha Roy and Gerhard Weikum: Reinforcement Learning from Reformulations in Conversational Question Answering

• 15:30
  Lorik Dumani and Ralf Schenkel: Quality-Aware Ranking of Arguments

• 15:55 End of Session

Community Meeting

• 16:00
  Community Meeting of Special Interest Group IR

Announcements

17.06.21
We are happy to announce that this year’s event will host the Netherlands, with two invited keynotes from Academia (Arjen P. de Vries, Radboud University Nijmegen, https://informagus.nl) and Industry (Edgar Meij, Bloomberg, https://edgar.meij.pro).

---

Intended Audience

The target group includes researchers and practitioners who are interested in developing, applying, and analyzing information retrieval systems as well as application scenarios. The workshop is also a great and affordable platform for young researchers to present their work to a larger group of researchers and get valuable feedback. Doctorate and Master students are especially encouraged to participate and discuss their ideas with world-renowned experts.

---

Types of Submissions

• Long Paper (up to 12 pages)
• Short Papers (up to 6 pages)
• Abstracts (up to 2 pages) of previously published research

Page limits are excluding references.

Submissions are welcome in English and German. They have to use the official CEUR-ART 1-column style. An Overleaf page for LaTeX users is available at https://www.overleaf.com/read/sxqkrwncfrhg. The papers should be submitted as PDF files to EasyChair https://easychair.org/conferences/?conf=lwda2021.

All submissions will be reviewed by at least two independent reviewers. The proceedings will be published at http://ceur-ws.org/ and indexed within DBLP. All workshop participants have to register for the LWDA 2021 conference. We would like to make the workshop a lively discussion forum and we will therefore ask authors and reviewers to outline main questions to be discussed before the actual workshop.

---

Important Dates

Please note that all deadlines are AoE (Anywhere on Earth).

• Submission of papers: June 10, 2021 –> June 30, 2021 –> July 18th, 2021
• Notification of acceptance: July 22, 2021 –> August 6th, 2021 –> August 12th, 2021
• Camera-ready copy: August 05, 2021 –> August 22nd, 2021

• Workshop: September 1 - 3, 2021

---

Program Chairs

• Philipp Schaer, Technische Hochschule Köln, Germany
• Klaus Berberich, Hochschule für Technik und Wirtschaft des Saarlandes, Germany