Personalized Nichesourcing: Acquisition of Qualitative Annotations from Niche Communities. - Chris Dijkshoorn; Mieke H. R. Leyssen; Archana Nottamkandath; Jasper Oosterman; Myriam C. Traub; Lora Aroyo; Alessandro Bozzon; Wan J. Fokkink; Geert-Jan Houben; Henrike Hovelmann; Lizzy Jongma; Jacco van Ossenbruggen; et al. (UMAP Workshops, 2013)