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.
Recommendation systems have been widely used in social media. One of recommendation tasks in social media is to provide relevant messages for users. Although many models have been proposed, how to make accurate recommendation for new users with little historical information still remains a big challenge, which is called the cold start problem. In order to address this problem, many models have been...
When the stock market has become more and more competitive, the stock market prediction has been a hot research topic. Traditional methods are based on historical stock data, which ignore the latest market information. Later although financial news is proposed to access market information, there are some disadvantages for news to predict the stock market. Recently when the micro-blogging service has...
Relevance Feedback (RF) is an important technique to improve information retrieval and has emerged as one of the hottest topics for both the industry and academic researchers. The performance of RF depends on feedback information. As the volume of feedback information gradually increases, Explicit Relevance Feedback (ERF) is attractive. In this paper, we focus on the ERF in which Feedback information...
In currently researches, feature of data is ignored while constructing models of XML documents. To solve this problem, a model named multidimensional tree for XML documents is presented in this paper. The model can describe feature of structure and data in XML documents by extending definition of structural summary. Sets of relationship between sibling elements will be added in structural summary...
An invalid XML document that does not satisfy its schema constraints requires correction. In this paper, a correction method based on the conflict detection of update operations is proposed. First, a schema 6-tuple model is introduced to flatten the hierarchical structure of the schema. Second, a path set that is equivalent to the invalid XML tree is built, and a correction approach is proposed to...
XML is the de facto standard format for data exchange manipulation of structured documents. XML schema provides important structural information of XML documents. Unfortunately, much XML data does not have XML schema or is not accompanied by its XML schema. In order to take advantage of having XML schema in XML documents, XML schema of the XML document is significant to be extracted. This paper will...
With the promotion and application of XML standards, The research hotspot in database domain has emerged, namely, how to effectively manage the large-scale XML data. XQuery Update Facility, which proposed by W3C in 2008 has become the grammar and semanteme standard for the realization of XML data updating. Based on this standard, this paper presents a XML update pattern which seamlessly integrated...
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.