In uncontrolled channels such as forums, blogs, microblogs, news, and newspapers are currently the primary methods of expressing personal opinions. About the public importance of things will soon constitute online speech, individuals in which to fan the flames, very easy to form the spread of irrational mood of the network, and then serious adverse effects, the relevant departments to form a huge speech pressure. Regarding such a place where speech is appropriately concentrated, then it is necessary to carry out early warning of the content, public opinion early warning is for public opinion data from the Internet, through the public opinion classification algorithm to categorize and process the content, the results of the classification of the first time to push out, to reach the intention of early warning, and then the fastest to get the latest social opinion things.
To achieve the intention of early warning, there must be a trustworthy platform, and Sina Opinion is qualified. Sina Opinion is a big data service platform for government and enterprise public opinion developed by Shanghai Mito Information Technology Co. Based on Chinese Internet big data and official data from Sina Weibo, Sina Public Opinion collects news, newspapers, government affairs, microblogs, public numbers, blogs, forums, videos, websites, clients, and other 11 major sources of information from all over the Internet 24 hours a day, and collects more than 140 million pieces of data every day.