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Voltage sag has become one of the major power quality concerns in recent years. To accurately evaluate the voltage sag, it is necessary to obtain its sag type. In this paper, a more generalized voltage sag classification method with consideration of phase shift is proposed compared to the traditional classification method. This new method can be used in the accurate discrimination of sag types. Moreover,...
In recent years, the popularity of social networking sites proves a lofty raise in their users. Twitter, a micro blogging service less than seven years old, commands more than 500 million users as of July 2012 and is still growing fast. In Twitter, users exchange their ideas through a text based posts called tweets which can have maximum 140 characters. The prevalence and open structure of Twitter...
We present a new, efficient method for automatically detecting severe conflicts, `edit wars' in Wikipedia and evaluate this method on six different language Wikipedias. We discuss how the number of edits and reverts deviate in such pages from those following the general workflow, and argue that earlier work has significantly over-estimated the contentiousness of the Wikipedia editing process.
The explosive growth of the Internet inevitably leads to the proliferation of harmful information such as pornography, drug and violence. A great deal of filtering techniques based on image and text categorization is proposed in the literature. Among them, text-based filtering plays a leading role for its good performance. Existing text filtering algorithms can be seen as a classical text categorization...
The new paradigm of cloud computing poses severe security risks to its adopters. In order to cope with these risks, appropriate taxonomies and classification criteria for attacks on cloud computing are required. In this work-in-progress paper we present one such taxonomy based on the notion of attack surfaces of the cloud computing scenario participants.
Automatic extraction of opinions on products from Web has been receiving interest increasingly. Such extracted knowledge helps to find out what other people think about the particular product or service. With the growing availability of resources like online review sites and personal blogs, new opportunities and challenges arise as people can, and do, actively use information technologies to seek...
Nowadays, a number of universities, laboratories, government agencies and companies that placing theirs documents online and making them searchable are increasing because the Internet infrastructure for global data access is fully functional. However, a large number of organizations have documents that lack metadata. The lack of metadata breaks off not only the discovery and dissemination of these...
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