[Elsnet-list] 4th Challenge on Large Scale Hierarchical Text Classification (LSHTC4)

Ion Androutsopoulos ionandr at gmail.com
Mon Oct 7 16:52:20 CEST 2013

Call for Participation

Fourth Challenge on

Large Scale Hierarchical Text classification

Web site: http://lshtc.iit.demokritos.gr/LSHTC4_CALL
Email: lshtc_info at iit.demokritos.gr


We are pleased to announce the fourth edition of the LSHTC challenge. 
This year’s challenge comprises three tracks and is based on two large 
datasets created from the ODP web directory (DMOZ) and Wikipedia. The 
datasets are multi-class, multi-label and hierarchical. The number of 
categories ranges between 13,000 and 325,000 and the number of documents 
between 380,000 and 2,400,000.

The tracks of the challenge are organized as follows:

1. Very Large Scale Supervised Learning on a large collection from Wikipedia

2. Multi-task learning, based on both DMOZ and Wikipedia category systems

3. Refinement-learning on a subset of the DMOZ category system

In order to register for the challenge and gain access to the datasets, 
you must have an account at the challenge Web site. Please consult the 
web site (http://lshtc.iit.demokritos.gr/) for more information on this 

Important dates:
• July 17, start of the challenge
• August 5, opening of the evaluation
• January 15, closing of evaluation

Associated Workshop at WSDM (http://www.wsdm-conference.org/2014/) 
(February 2014) : The results of the challenge will be presented in a 
workshop at WSDM 2014 on Web-Scale Classification: Classifying Big Data 
from the Web.

Massih-Reza Amini, LIG, Grenoble, France
Ion Androutsopoulos, AUEB, Athens, Greece
Thierry Artières, LIP6, Paris, France
Nicolas Baskiotis, LIP6, Paris, France
Patrick Gallinari, LIP6, Paris, France
Eric Gaussier, LIG, Grenoble, France
Aris Kosmopoulos, NCSR "Demokritos" & AUEB, Athens, Greece
George Paliouras, NCSR "Demokritos", Athens, Greece
Ioannis Partalas, LIG, Grenoble, France

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