CLEF 2021 Labs Registration

ARQMath - Answer Retrieval for Questions on Math (https://www.cs.rit.edu/~dprl/ARQMath)

Task 1 - Answer Retrieval

Task 2 - Formula Search

BioASQ - Large-scale biomedical semantic indexing and question answering (http://www.bioasq.org/workshop2021)

Task 1 – Task A: Large-Scale Online Biomedical Semantic Indexing

Task 2 – Task B: Biomedical Semantic Question Answering

Task 3 – Task MESINESP: Medical Semantic Indexing In Spanish

Task 4 – Task Synergy: Question Answering for COVID-19

CheckThat! - Lab on Detecting Check-Worthy Claims, Previously Fact-Checked Claims, and Fake News (https://sites.google.com/view/clef2021-checkthat)

Task 1 - Check-worthiness estimation

Task 2 - Detecting previously fact-checked claims

Task 3 - Fake news detection

ChEMU - Cheminformatics Elsevier Melbourne University lab (http://chemu.eng.unimelb.edu.au/)

Task 1 - Chemical Reaction Reference Resolution

Task 2 - Anaphora Resolution

CLEFeHealth - CLEF eHealth (https://clefehealth.imag.fr/)

Task 1 - Information Extraction from Noisy Text

Task 2 - Consumer Health Search

eRisk - Early Risk Prediction on the Internet (https://erisk.irlab.org/)

Task 1 - Early detection of pathological gambling

Task 2 - Early detection of self-harm

Task 3 - Depression-level estimation

ImageCLEF - Multimedia Retrieval Challenge in CLEF (https://www.imageclef.org/2021)

Task 1 - ImageCLEFmedical

Task 2 - ImageCLEFcoral

Task 3 - ImageCLEFdrawnUI

Task 4 - ImageCLEFaware

LifeCLEF - Multimedia Life Species Identification (https://www.imageclef.org/LifeCLEF2021)

Task 1 - PlantCLEF

Task 2 - BirdCLEF

Task 3 - GeoLifeCLEF

Task 4 - SnakeCLEF

lilas - Living Labs for Academic Search (https://clef-lilas.github.io)

Task 1 - Ad-hoc Search Ranking

Task 2 - Research Data Recommendations

PAN - Lab on Digital Text Forensics and Stylometry (https://pan.webis.de/)

Task 1 - Cross-domain Authorship Verification

Task 2 - Multi-Author Writing Style Analysis

Task 3 - Profiling Haters on Twitter

SimpleText - (Re)Telling right scientific stories to non-specialists via text simplification (https://www.irit.fr/simpleText/)

Pilot Task 1 - Searching for background information

Pilot Task 2 - Text Simplification

Touché - Argument Retrieval (https://touche.webis.de)

Task 1: Conversational Argument Retrieval

Task 2: Comparative Argument Retrieval