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.
Community question answering(CQA) websites such as Quora and StackOverflow provide a new way of asking and answering questions which are not well served by general web search engines. With the huge volume and ever-increasing number of users and questions, effective strategies of ranking experts for different questions need to be proposed. In this paper, we first make some analysis on the network structure...
Massive data analysis platform is a cloud-based service platform, which mainly provides users with a variety of data analysis services. How to find a reasonable billing model is becoming a critical problem. In this paper, we first discuss the requirements of the platform to determine the key factors for billing. Then, using pay-as-you-go billing strategy, a Service Level Agreement (SLA)- based dynamic...
This paper uses log data of teaching and learning activities in a web-based learning platform, selects two universities implementing different online learning promotion strategies as the cases, and conducts the group differences analysis based on the hypothesized structural equation modeling (SEM) to analyze group interactive activities in two universities' online learning environment. The results...
Learning analytics can give powers to teachers and learners to optimize their teaching and learning. This paper presents the design and implementation of learning analytics system for teachers and students based on a special LMS -- THEOL LMS, which is commonly used in blended learning in universities and colleges. The technical architecture of learning analytics system for teachers and students is...
This paper proposes an improved meta-analysis for truncated data to decrease the bias from file drawer problem for meta-analysis. It shows the construction of confidence intervals and test after parameters estimate approached by maximum likelihood estimate with Newton-Raphson iteration, or by way of bootstrap method or jackknife method which beyond the tradition method under the supposition that parameters...
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.