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 a scientific research network, to determine the influence of an academic research, a key is to build and evaluate properties of its cited references or co-author networks. To analyze 18,000 lines of original data from Problem C given in 2014 MCM/ICM (Mathematical Contest In Modeling /Interdisciplinary Contest In Modeling), the Pajek software was used with obtaining a result that correlations among...
As an important social information interchange platform, micro blogging has accumulated a large amount of immediacy, rich semantics, and various forms of user generated content (UGC). How to efficiently and accurately discover useful knowledge from the UGC is what micro blog mining focuses on. This article introduce two methods for acquiring micro blog data: micro blogging open application program...
Bayesian network is an uncertainty inference network based on probability. Its structure learning is one of the main research techniques in the field of data mining and knowledge discovering, while constructing Bayesian network structures from data is NP hard. According to the information theory and conditional independence test, a new algorithm is presented for the construction of optimal Bayesian...
Time series trend extraction is of great interest in data mining research recently. For example, it can be applied in system monitoring to detect faults and abnormalities in process industry and medical care. In this paper, a trend extraction algorithm based on variable time window length median filter is presented. The trend filtered can not only reflect the basic geometry of noised signal, but also...
Field-pipelines leakage detection based on the negative pressure wave theory is mainly aiming to effectively process pressure sample signal in time domain. Previous methods often perform well for detecting large leakage but poorly for small leakage. In this paper, an alternative way using a particular morphological filter constructed by basic morphological operators is considered. The particular filter...
As Graphical User Interfaces (GUIs) have almost become ubiquitous for users to interacting with software system, GUI testing becomes an essential task. GUI testing, whose basic steps are test case generation and execution result validation, is a knowledge intensive process that requires both knowledge of GUI systems and testers' experience. In this paper, an ontology-based approach is proposed to...
Aiming at existing examination arrangement algorithm lacks of application value due to its too ideal conditions, this paper presents a improved algorithm based on coloring theory and greedy method, which realize automated examination arrangement by allocating resources such as examination time and classrooms by stages. The algorithm can solve kinds of forced/feasible constraints and satisfies users.
According to the disadvantage of D-S theory and the limitation of improved combination rule, a modified combination rule based on rough set is presented. The weight of each evidence is obtained according to its influence degree on D-S combination result. Weighted averaging the evidence in the system, the Dempster combination rule is used to realize information fusion. The numerical example shows that...
A novel approach to video detection, synchronous detection lines method, is proposed in this paper. In fact, it is a division mode for the pixel sets of the video images. Its division principle is that the pixels whose states change synchronously in the image series are divided into the same pixel sub-set. The combination form of these pixels is generally represented as the line segment in the application...
We demonstrate a collection development decision support tool that mines digital archive usage data. We want to better understand the University of Southern California (USC) Digital Archive's collection structure by analyzing the objects' characteristics, by analyzing the relationships between viewed objects, and by understanding usage trends over time. By relying on implicit patterns of usage data,...
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.