Abstract: A method and a computer-implemented system are provided for calculating an affect score for a text corpus, so as to facilitate analysis of the sentiment inherent to that text corpus. A list of a plurality of words is provided, wherein each word is expressing affect. Words in the text corpus are matched with words contained in the list, and a frequency of the matched words is computed. Affect words are associated along at least one semantic dimension, and those derived from the semantic dimensions and the respective frequencies are aggregated using a Choquet integral function into an affect score.