Twitter is a microblog service that generates a huge amount of textual content daily. All this content needs to be explored by means of text mining, natural language processing, information retrieval, and other techniques. In this context, automatic keyword extraction is a task of great usefulness. A fundamental step in text mining techniques consists of building a model for text representation...

With the rapid increase of number Internet users and amount online comment data, a large referable information samples are provided for data mining technology. As technical application mining, text sentiment classification can be widely used in public opinion management, marketing, other fields. In this study, combination approach to SVM (support vector machine) IPSO (improved particle swarm op...