The resistance between two nodes in general position on a fan network with n radial lines and m transverse lines is determined. Also a similar result of Izmailian, Kenna, and Wu [J. Phys. A: Math. Theor. 47, 035003 (2014)] for an m×n cobweb network is reproduced, but the method used here is significantly different. It avoids the use of the Kirchhoff matrix, requires the solution of just one ins...

OLAP (On-Line Analytical Processing) systems provide decision makers with multidimensional analyses of large databases by generating an aggregated vision of data. Nowadays, these systems face growing non-numeric data. In this context, we propose in this paper a new generic multidimensional model called CobWeb dedicated to the OLAP of XML documents; it is based on the concept of facet. The CobWe...

In this paper we propose a methodology for organising the users of an information providing system into groups with common interests (communities). The communities are built using unsupervised learning techniques on data collected from the users (user models). We examine a system that filters news on the Internet, according to the interests of the registered users. Each user model contains the ...

Abstract In this paper, we study a class of markets, among which can mention agricultural and energy characterized by seasonality, i.e., in demand and/or supply conditions cyclically alternate with precise known periodicity. We propose new theoretical framework based on cobweb model adaptive expectations, accordingly modified to be consistent market’s seasonality. The model, consisting second-o...

In 2009-2010, unusual symptoms were observed on Pleurotus eryngii grown in mushroom farms in Gyeongnam Province, Republic of Korea. One of the main symptoms was a cobweb-like growth of fungal mycelia over the surface of the mushroom. The colonies on the surface rapidly overwhelmed the mushrooms and developed several spores within 3-4 days. The colonized surface turned pale brown or yellow. The ...

The primary role of the thyroid gland is to help regulation of the body’s metabolism. The correct diagnosis of thyroid dysfunctions is very important and early diagnosis is the key factor in its successful treatment. In this article, we used four different kinds of classifiers, namely Bayesian, k-NN, k-Means and 2-D SOM to classify the thyroid gland data set. The robustness of classifiers with ...

Aim: Assessment of In vitro and vivo Control Fungal Cobweb Disease Pleurotus ostreatus (Jacq), using organic materials.
 Study Design: This study was designed to control the disease by plant materials as agent; both in vivo.
 Methodology: ostreatus. test; food poison method used while test undertaken inoculation fully colonized substrate bags infected with cobweb crude extracts Piper ...

Establishing relationships within a dataset is one of the core objectives of data mining. In this paper a method of correlating behaviour profiles in a continuous dataset is presented. The profiling problem which motivated the research is intrusion detection. The profiles are dynamic in nature, changing frequently, and are made up of many attributes. The paper describes a modified version of th...

We consider the dynamics of a stochastic cobweb model with linear demand and a backwardbending supply curve. In our model, forward-looking expectations and backward-looking ones are assumed, in fact we assume that the representative agent chooses the backward predictor with probability q , 0 q 1, and the forward predictor with probability 1 − q , so that the expected price at time t is a random...