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In this paper, we propose a method for representing “neighborhoods” of moving objects such as people. By using neighborhoods, it is possible to determine whether the spatial relations between objects and their surrounding spatial information are strong. It can be said that a neighborhood is the spatial area of an object's attention, interest or concern. It is preferable that neighborhoods move while...
In this paper, we consider the problem of constructing accurate and flexible statistical representations for count data, which we often confront in many areas such as data mining, computer vision, and information retrieval. In particular, we analyze and compare several generative approaches widely used for count data clustering, namely multinomial, multinomial Dirichlet, and multinomial generalized...
According to the problem that K-Means clustering algorithm fails to correctly distinguish non-convex shape clusters, computation mode of distance in the algorithm is changed and density metric mode which can reflect the characteristics of data themselves is adopted instead. In the mode, Delaunay triangulation graph which has the advantages of nearest neighbour and adjacency is introduced to compute...
Ridges are extremal curves of principal curvatures on a surface that indicate salient intrinsic features of its shape. This paper presents a novel approach for extracting ridges of improved quality from isosurfaces of volumetric scalar-valued grids by converting them to implicit trivariate B-spline representations. A robust tracing approach demonstrated to extract ridges accurately from parametric...
Several data management applications rely on data clustering methods which are usually designed to handle a static object as a single point in space. In recent years, clustering static objects seems to reach a stable point. Clustering uncertain objects is more challenging than clustering static objects and currently, it is actively studied in data mining clustering researches. In this paper, we study...
Product failure distribution research is a basic research for product advanced design and manufacture, and has an important role in intelligent computing. Traditional analysis of the failure distribution about small samples has some limitations, for example, the weibull distribution test is better as the sample size is more than 10; the Figure test is better as the sample size is more than 20; the...
Factorization algorithms widely used in projective reconstruction handle all of images uniformly without preferential treatment for any image. However, they require that all the points are visible in all views. Due to reasons, such as occlusion, the demand can not be satisfied. For the factorization method to be better applicable, we propose a new factorization-based algorithm combining 2D reprojection...
This paper considers formation shape control of a team of four agents in the plane, motivated by an example from [1]. We utilize bidirectional, gradient-based interagent distance control laws which are designed so that the agents cooperatively achieve a specified desired formation shape. When every interagent distance is actively controlled (i.e. the information architecture is a complete graph),...
Introducing a suitable model for a structure to understand its behavior under different conditions of loading is very important. Mathematical modeling is the simulation of a physical structure or physical process by means of suitable analytical or numerical construct. One of suitable methods for finding deflection of a beam under different forms of loading is Finite Element Method (FEM). In this paper...
This paper presents an algorithm for object localization and segmentation. The algorithm uses machine learning, and statistical and combinatorial optimization tools to build a tracker that is robust to noise and occlusions. The method is based on a novel energy formulation and its dual use for object localization and segmentation. The energy uses kernel principal component analysis to incorporate...
It is known that a method to classify different shapes can be based on the computation of the moments associated to the shapes, which are defined as particular surface integrals. In this paper each shape is associated to a Hamiltonian system one trajectory of which runs along the boundary of the shape. In this way, the surface integrals defining the moments are reduced to a curvilinear integral along...
The ABR characters have been used especially in medical fields. But the ABR detail system is not sufficiently clear. Therefore the studies of the ABR system and the Life Support system have been performed. Especially from such view point as information and communication process the ABR characters are needed to be discussed. In this paper the expanded partial differential equation models of the ABR...
The statistical analysis of traffic flow is the fundamental of road traffic forecasting with data mining. In the common traffic flow theory, macroscopic flow model and data presentation shows chaos and stochastic distribution. However, in the microscopic based traffic model, it is revealed that in high frequency sampled test, the variables such as flow, density, and lane usage have common trend of...
After analyzing the curvature expression, the inflection points were given by the known planar cubic Bezier control polygon information. Based on that, we proposed an algorithm that can quickly and accurately obtain the shape characteristic points of curve. Experimental results show that the algorithm is rapid, accurate, and robust.
Based on cubic splines, an image deformation method using Moving Least Squares is proposed in this paper. According to shape information or deformation requirement, key points are set to create control curves. The curves are moved to new positions to guide image warping. The transformation functions are deduced to compute affine, similarity and rigid deformations, by which we can obtain various image...
In today's challenging Aviation Industry, the role of high-speed and accurate Flight Planning cannot be over-emphasized. On time flight operation while maintaining the standard level of safety is a demanding task which airlines are facing recently. In our innovative flight performance planning, we have combined the applications of Maple 12 (as a calculating software) with Delphi 6 (programming Software)...
The cutoff wavelengths ??cmn of metallic waveguides with elliptical cross section are determined analytically. Two alternative methods, namely, a field and a shape perturbation method are used in the proposed analysis. Exact, closed form expressions, free of Mathieu as well as of Bessel functions, are obtained for the cutoff wavelengths, when the solution is specialized to small values of the eccentricity...
Having a single numerical value to represent a student's overall level of achievement is useful. At Curtin University of Technology, it is the course weighted average (CWA) - an average of percentage grades received for each course. At Virginia Tech, it is the grade point average (gpa) - an average of values based upon letter grades for courses (letters initially based upon percentage grades). To...
This paper shows how to use an ideal rubber string, which is clamped down at both ends, as a memory device. The information is stored on the string by giving it an initial shape, where the Fourier coefficients of this shape represent the code bits. Once the string is let go, the wave equation governs the oscillatory movements of the string, but it retains the information in the Fourier coefficients...
In this paper CFIE formulation is presented to analyze broad wall slots of arbitrary shape partially filled with homogeneous dielectric materials. The ldquogeneralized network formulationrdquo for aperture problems is formulated in terms of linear operator equations and expanded in RWG functions in a Galerkin sense. The approach uses a simultaneous representation of the equivalent surface current...
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