Comunicació presentada a: The Tenth International AAAI Conference on web and social media (ICWSM 2016), celebrat del 18 al 20 de maig de 2016 a Colònia, Alemanya.

Online debate tools for participatory democracy and crowdsourcing legislation are limited by different factors. One of them arises when discussion of proposals reaches a large number of contributions and therefore citizens encounter difficulties in mapping the arguments that constitute the dialectical debate. To address this issue, we present a visualization tool that shows the discussion of any proposal as an interactive radial tree. The tool builds on Decide Madrid, a recently created platform for direct democracy launched by the City Council of Madrid. Decide Madrid is one of the most relevant platforms that allows citizens to propose, debate and prioritise city policies.

This work is supported by the EU project D-CENT (FP7/CAPS 610349) and the Spanish Ministry of Economy and Competitiveness under the Mar´ıa de Maeztu Units of Excellence Programme (MDM-2015-0502)