The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Opinion leaders play an important role in influencing topics of discussion among a group of persons. Hence, identification of opinion leaders has receive recent attention. Specifically, discovering opinion leaders in a Web-based stock message board might be valuable for many investors. Current methods for finding opinion leaders mainly concentrate on a graph of user connections, and thus leads to...
Facing the enormous text on the Internet, automatic topic discovery out of large text corpus becomes an important task for advanced intelligence information analysis, such as opinion recognition, Web user interest analysis, etc. Although many topic mining methods have shown great success in dealing with topic-based analysis tasks, it is desired to discover meaningful topic descriptions for informatics...
Fitting an accurate distribution to stock return has drawn great attention for a long period. Many researches are done on the original stock return, while transformation idea is introduced into the proposed method in this paper. A new random variable is devised based on aggregate transformation which is performed by using separation in a series of time windows in stock return. The statistical characteristic...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.