ABSTRACT
Sentiment Analysis aims extract subjective information from texts that, when written in Portuguese face a number of difficulties related to grammatical nature and vocabulary diversity. In order to collaborate with researches in this area, this paper presents the proposal to evaluate the performance of the committee approach in relation to the traditional approaches of sentiment analysis in the Portuguese language context. As object of application we choose tweets about volleyball theme that will serve as basis for the approaches application. These texts will be treated using Natural Language Processing for better performance of the algorithms. Other approaches will also be used in this study to assist in the evaluation of the committee along with the aid of metrics such as accuracy, precision, recall and F-measure.