%0 Conference Paper %B DATA %D 2013 %T Social Data Sentiment Analysis in Smart Environments - Extending Dual Polarities for Crowd Pulse Capturing %A Athena Vakali %A Despoina Chatzakou %A Vassiliki A. Koutsonikola %A Andreadis, George %E Helfert, Markus %E Francalanci, Chiara %E Filipe, Joaquim %B DATA %I SciTePress %P 175-182 %@ 978-989-8565-67-9 %G eng