“…Nguyen et al (2011) also use regression to predict author age, using l1 regularisation to induce a sparser model, selecting a subset of informative features to further analyse. Ethical considerations are also extremely important in clinical NLP (Suster et al, 2017), health research and shared tasks in general (Parra Escartín et al, 2017). While (mercifully) much of the data access logistics for the CLPsych18 shared task were handled by the organisers, it is still critical to consider how raw data and interim results are distributed amongst the team, whether models perform unusually poorly for subsets of participants, potential dual use of any developed technology, and suitability of different deployment techniques.…”