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Full-Text Articles in Computer Engineering
A Feasible Algorithm For Locating Concave And Convex Zones Of Interval Data And Its Use In Statistics-Based Clustering, Vladik Kreinovich, Eric J. Pauwels, Scott Ferson, Lev Ginzburg
A Feasible Algorithm For Locating Concave And Convex Zones Of Interval Data And Its Use In Statistics-Based Clustering, Vladik Kreinovich, Eric J. Pauwels, Scott Ferson, Lev Ginzburg
Departmental Technical Reports (CS)
Often, we need to divide n objects into clusters based on the value of a certain quantity x. For example, we can classify insects in the cotton field into groups based on their size and other geometric characteristics. Within each cluster, we usually have a unimodal distribution of x, with a probability density d(x) that increases until a certain value x0 and then decreases. It is therefore natural, based on d(x), to determine a cluster as the interval between two local minima, i.e., as a union of adjacent increasing and decreasing segments. In this paper, we describe a feasible algorithm …
Statistical And Dempster-Shafer Techniques In Testing Structural Integrity Of Aerospace Structures, Roberto A. Osegueda, Seetharami R. Seelam, Bharat Mulupuru, Vladik Kreinovich
Statistical And Dempster-Shafer Techniques In Testing Structural Integrity Of Aerospace Structures, Roberto A. Osegueda, Seetharami R. Seelam, Bharat Mulupuru, Vladik Kreinovich
Departmental Technical Reports (CS)
Several techniques are known for non-destructive testing of aerospace structures, such as pulse echo, Eddy current, magnetic resonance, etc. Each of these techniques detects some faults but misses others, so it is desirable to combine (fuse) the results of these techniques. Several methods of data fusion are known. To improve the quality of fault detection, we modified the straightforward statistical method as follows: (1) we computed mean and variance iteratively: detected faults are excluded form the computation on the next iteration; (2) we treated the plate's edge and the inside separately; (3) we dismissed measurements in which only one technique …