Finding the completeness of a graph is important from various aspects. Considering the massive growth and dynamics of real-life networks, we readdress this problem in a streaming setting. We approach the problem of verifying the completeness of a graph by estimating the eigen values of a sketch of its adjacency matrix. Here, we provide the first approximation algorithm for estimating the comple...

Basic group of visual techniques such as color, shape, texture are used in Content Based Image Retrievals (CBIR) to retrieve query image or sub region of image to find similar images in image database. To improve query result, relevance feedback is used many times in CBIR to help user to express their preference and improve query results. In this paper, a new approach for image retrieval is pro...

Over the years, a number of dimensionality reduction techniques have been proposed and used in chemo informatics to perform nonlinear mappings. Nevertheless, data visualization techniques can be efficiently applied for dimensionality reduction mainly in a case if the data are not really high-dimensional and can be represented as a nonlinear low-dimensional manifold when it is possible to reduce...

The paper is devoted to the theory of eigen electromagnetic waves propagating across the axis of symmetry in waveguides with a non-circular cross-section. The case of waveguides filled with isotropic cold plasma is studied theoretically. Plasma particles motion is described in fluid approximation; expressions for the waves’ fields are derived from Maxwell equations. Cross-section of the studied...

This paper focuses on the mathematical technique PCA with the drawback of its mixing of data pixel. We have extracted principal directions of the covariance ellipse as done in PCA, but we will not blindly take the Eigen vectors corresponding to k largest values. Instead, we transform the data vectors into the new n– dimensional (n is dimension of old input space) vector space spanned by the Eig...

A novel stochastic technique is presented to directly model singular vectors and singular values of a multiple input multiple output (MIMO) channel. Thus the components modeled directly in the eigen domain can be adapted to exhibit realistic physical domain behavior when assembled. The model exploits natural paths of eigenmodes, such that a simple Doppler filter generator process can be used. F...

Deformations in handwritten characters have classdependent tendencies. For example, characters of class “A” are often deformed by global slant transformation and never deformed to be similar to “R”. In this paper, the extraction and the utilization of such tendencies called eigen-deformations are investigated for better performance of elastic matching based recognition systems. The eigen-deform...

the study examined relationship between the gross domestic product (gdp) of nigeria with the inputs of labour, capital and the output of fisheries. this is to ascertain that the fisheries contribution to the economy is more than is recorded in the sense that taking its indirect and direct economic impact into account, its overall contribution to the gdp of nigeria may be higher than that measur...

Optimal transmitter designs obeying the water-filling principle are well-documented; they are widely applied when the propagation channel is deterministically known and regularly updated at the transmitter. Because channel state information is impossible to be known perfectly at the transmitter in practical wireless systems, we design, in this paper, an optimal multiantenna transmitter based on...

This paper introduces a fast texture descriptor, the LU-transform. It is inspired by previous methods, the SVD-transform and Eigen-transform, which yield measures of image roughness by considering the singular values or eigenvalues of matrices formed by copying greyvalues from a square patch around a pixel directly into a matrix of the same size. The SVD and Eigen-transforms therefore capture t...