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.
In this paper we aim to resolve the recommendation problem by using the virtual ratings in online environments when user rating information is not available. As a matter of fact, in most of current websites especially the Chinese video-sharing ones, the traditional pure rating based collaborative filtering recommender methods are not fully qualified due to the sparsity of rating data. Motivated by...
As an emerging area in information retrieval, question answering aims at retrieving answers to user-posted questions from a given sentence collection or text corpus. In question answering, the queries are usually submitted in the form of short sentences which are unable to represent user intentions sufficiently. In this study, we present a novel framework which improves question answering through...
In this paper, we define and study a novel problem which is referred to as Community Question Grouping (CQG). Online QA services such as Yahoo! Answers contain large archives of community questions which are posted by users. Community Question Grouping is primarily concerned with grouping a collection of community questions into predefined categories. We first investigate the effectiveness of two...
In this paper, an improved genetic algorithm is presented to solve the multicast routing problem, which is known as NP-complete problem. The contribution of this work includes: (1) the adaptive niche technique and new migration rules are designed to improve the performance of genetic algorithm. (2) In order to fulfil the adaptability of the basic operators of genetic algorithm, the artificial immune...
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.