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The proliferation of geo-positioning technologies boosts the prevalence of GPS-enabled devices, and thus many spatial-textual objects that possess both text descriptions and geo-locations are extensively available in reality. Hence, how to efficiently exploit both spatial and textual description of objects to a spatial keyword query (SKQ) has increasingly become a challenging problem. Previous studies...
Based on the molecular kinetic theory, a molecular dynamics-like data clustering approach is proposed in this paper. Clusters are extracted after data points fuse in the iterating space by the dynamical mechanism that is similar to the interacting mechanism between molecules through molecular forces. This approach is to find possible natural clusters without pre-specifying the number of clusters....
A supervised nonlinear classification approach is proposed in this paper. It can classify data in original feature space without concerning kernel transformation to map data into linear high dimension space, Belonging degree measure used in this approach is more rational than some conventional distance measures such as Euclidean distance, Under ERM principle, union of hyper ellipsoids and hyper planes...
This paper introduces a novel data classification method that is based on the idea of data gravity. Many recent clustering and classification ideas based on data gravity tend to consider data gravity magnitude as decisive factor. They eye data gravity as scalar quantity. Novelly in this paper, data gravity is defined to be a vector, and a vector model is set up to classify data by exploiting the internal...
Risk can conduce to failure of software project, and make a loss for the enterprise. It is a focus topic for software engineering researchers. Developer turnover risk is a great risk at the process of software project, yet, few scholars pay attention to it. We can use information entropy to measure effectively the uniformity of each subsystem. In this paper, we provided a quantitative measure model...
Software development risk always influence the success of software project, even determine a enterprise surviving or perishment. Consequently, there are some significant meaning for software company and software engineering field to measure effectively the risk. Whereas, the measurement is very difficult because software is a sort of logic product. There are many methods to measure the risk at the...
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