The quality of decisions is based on the quality of processed data. So it is important that at the beginning of the data mining process to provide correct and quality data. The preprocessing data is a necessity for avoiding the failure of the data analysis. The idea that the data mining process...

For the chaotic systems, the fact that they are deterministic does not make them predictable. However, the predictive power in the case of chaotic systems can be improved and this can be illustrated by weather system for which predictions for short periods have reached to a very good accuracy. A...

Support Vector Machines (SVMs)have found many applications in various fields. They have been introduced for classification problems and extended to regression. In this paperI review the utilization of SVM for classification problems and exemplify this with application on IRIS datasets. I used...

Chaos Theory aims to find the underlying order from apparently random data. Every economic process produce one or many time series. Determining if the process is or not chaotic may supply valuable information about how to deal with that process. There is no single test that identify chaos, so to...

Due to the continuous growth and spread of the internet using Web Mining to improve the quality of different services has become a necessity. Web Mining is nothing else than applying data mining techniques and algorithms on web data. In this work we present two algorithms used in Web Structure...

Support Vector Machine (SVM) is one of the most promising algorithms from learning machines domain. First, SVM was designed to solve classification problems but later they was adapted to deal with regression problems. In this paper I present a model that use SVM to predict the exchange rate...

Time series prediction is an open problem and many researchers are trying to find new predictive methods and improvements for the existing ones. Lately methods based on neural networks are used extensively for time series prediction. Also, support vector machines have solved some of the problems...

The World Wide Web, or simply the web, is the most dynamic environment.The web has grown steadly in recent years and his content is changing every day. Today, they are several billions of HTML documents, pictures and another multimedia files available on the Internet. There is a need of methods...