Affective Computing and Sentiment Analysis : Emotion Metaphor and Terminology This volume maps the watershed areas between two holy grails of computer science: the identification and interpretation of affect including sentiment and mood. The expression of sentiment and mood involves the use of metaphors especially in emotive situations. Affect computing is rooted in hermeneutics philosophy political science and sociology and is now a key area of research in computer science. The 24 7 news sites and blogs facilitate the expression and shaping of opinion locally and globally. Sentiment analysis based on text and data mining is being used in the looking at news