The contents have been ordered in accordance with the following topical sections: resources lexical, syntax and parsing, part-of-speech tagging and morphology; word sense disambiguation, semantic and discourse, opinion mining and sentiment detection, text generation, machine translation and multilingualism; extraction of information and information retrieval, text categorization and classification, summarization and textual entailment recognize, help authoring, error correction, and analysis of style, and voice recognition and generation.