TASS 2015 - 4th evaluation workshop for sentiment analysis

TASS is an experimental evaluation workshop for sentiment analysis and online reputation analysis focused on Spanish language, organized as a satellite event of the annual conference of the Spanish Society for Natural Language Processing (SEPLN). After three previous successful editions, TASS 2015 will take place on September 15th, 2015 at University of Alicante, Spain.
The aim of TASS is to provide a forum for discussion and communication where the latest research work and developments in the field of sentiment analysis in social media, specifically focused on Spanish language, can be shown and discussed by scientific and business communities. The main objective is to promote the application of state-of-the-art algorithms and techniques for sentiment analysis applied to short text opinions extracted from social media messages (specifically Twitter).
Several challenge tasks are proposed, intended to provide a benchmark forum for comparing the latest approaches in these fields. In addition, with the creation and release of the fully tagged corpus, we aim to provide a benchmark dataset that enables researchers to compare their algorithms and systems.
Tasks
First of all, we are interested in evaluating the evolution of the different approaches for sentiment analysis and text classification in Spanish during these years. So, the traditional sentiment analysis at global level task will be repeated again, reusing the same corpus, to compare results. Moreover, we want to foster the research in the analysis of fine-grained polarity analysis at aspect level (aspect-based sentiment analysis, one of the new requirements of the market of natural language processing in these areas.
Thus the following two tasks are proposed this year.
Participants are expected to submit up to 3 results of different experiments for one or both of these tasks, in the appropriate format described below.
Along with the submission of experiments, participants will be invited to submit a paper to the workshop in order to describe their experiments and discussing the results with the audience in a regular workshop session. More information about format and requirements will be provided soon.