<hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold">Saif, Hassan, et al.</hi> (2014): "On stopwords, filtering and data sparsity for sentiment analysis of twitter.", in: <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic">Proc. 9th Language Resources and Evaluation Conference (LREC)</hi> 810-817.