Uddin, Dr. JiaRabbi, Reshan AhmedKhan, Md. Walid AminShaown, Md.Alam, Md. Shajidul2018-02-152018-02-15201712/24/2017ID 13301078ID 13301034ID 13301133ID 13301075http://hdl.handle.net/10361/9474Cataloged from PDF version of thesis report.Includes bibliographical references (pages 29-30).This thesis report is submitted in partial fulfilment of the requirements for the degree of Bachelor of Science in Computer Science and Engineering, 2017.In modern days, people tend to check reviews and opinions on a product before buying. The main goal of our system is according to the public opinion of a product, give a rating to the product on a scale of 0 to 10. Also, we are plotting this rating for better understanding of how every attribute of a product stands against time. For public opinion, we collected data from twitter. The reason behind using twitter tweets is because it is one of the most popular social sites. The data is pre -processed and then filtered for irrelevant characters. The data is then clustered based on different attributes of product. After that using the Naïve Bayes classifier we do a sentiment analysis of the data to calculate the polarity. This polarity is then converted to a scale of 0 to 10 (where 5 is average) and thus the rating of an individual product is obtained. This polarity for each product for every attribute is plotted in a graph where axis-x represents time and axis-y represents polarity.30 pagesenBRAC University thesis reports are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.Sentiment analysisProduct RatingRating generationAxis-xAxis-yThesis