S. Baccianella, A. Esuli, and F. Sebastiani, Istituto di Scienza e Tecnologie dell Informazione Consiglio Nazionale delle Ricerche Via Giuseppe Moruzzi 1, vol.56124, 2010.

G. B. Colombo, P. Burnap, A. Hodorog, and J. Scourfield, Analysing the connectivity and communication of suicidal users on twitter, Computer Communications, 2015.

M. D. Choudhury, M. Gamon, S. Counts, and E. Horvitz, Predicting depression via social media, ICWSM, p.2, 2013.

C. Hutto and E. Gilbert, Vader: A parsimonious rule-based model for sentiment analysis of social media text, Eighth International Conference on Weblogs and Social Media (ICWSM-14), 2014.

D. E. Losada and F. Crestani, A test collection for research on depression and language use, Conference Labs of the Evaluation Forum, p.12, 2016.

D. E. Losada, F. Crestani, and J. Parapar, CLEF Lab on Early Risk Prediction on the Internet: Experimental foundations, 2017.

L. A. Low, N. C. Maddage, M. Lech, L. B. Sheeber, and N. B. Allen, Detection of clinical depression in adolescents speech during family interactions, IEEE Transactions on Biomedical Engineering, vol.58, issue.3, pp.574-586, 2011.

I. A. Malam, M. Arziki, M. N. Bellazrak, A. E. Kaidi, B. Es-saghir et al., Automatic detection of depression in social networks, 2017.

S. Rude, E. Gortner, and J. Pennebaker, Language use of depressed and depression-vulnerable college students, Cognition & Emotion, vol.18, issue.8, pp.1121-1133, 2004.

U. Sagen, A. Finset, T. Moum, T. Mørland, T. G. Vik et al., Early detection of patients at risk for anxiety, depression and apathy after stroke. General hospital psychiatry, vol.32, pp.80-85, 2010.

H. A. Schwartz, J. Eichstaedt, M. L. Kern, G. Park, M. Sap et al., Towards assessing changes in degree of depression through facebook, Proceedings of the Workshop on Computational Linguistics and Clinical Psychology: From Linguistic Signal to Clinical Reality, pp.118-125, 2014.

C. Strapparava and A. Valitutti, Wordnet-affect: an affective extension of wordnet, Proceedings of the 4th International Conference on Language Resources and Evaluation (LREC 2004), pp.1083-1086, 2004.