Clustering and classification are two important techniques of data mining. Classification is a supervised learning problem of assigning an object to one of several pre-defined categories based upon the attributes of the object. While, clustering is an unsupervised learning problem that group objects based upon distance or similarity. Each group is known as a cluster. In this paper we make use o...

Various attributes within a dataset relate to each other and with the class attribute. The relationship between the different attributes with class attribute may improve the classification accuracy. The paper introduces CCSA algorithm that performs the clustering that is cascaded by classification based on association. The Clustering process generates a group of various instances within the dat...

Real-time classification of massive email data is a challenging task that presents its own particular difficulties. Since email data presents an important temporal component, several problems arise: emails arrive continuously, and the criteria used to classify those emails can change, so the learning algorithms have to be able to deal with concept drift. Our problem is more general than spam de...

In order to improve Web Information Retrieval, we have, in a previous work (Aires et al., 2004), investigated the use of stylistic features of Web texts in Portuguese to classify web pages according to users’ needs, using in most of the experiments the classification algorithm J48 (the Weka implementation of C4.5). From that study, we concluded that it was possible to identify some of the categ...

Résumé. Une tâche importante en analyse des données est la compréhension de comportements inattendus ou atypiques de groupes d’individus. Quelles sont les catégories d’individus qui gagnent de particulièrement forts salaires ou au contraire, quelles sont celles qui ont de très faibles salaires ? Nous présentons le problème d’extraction de tels groupes atypiques vis-à-vis d’une variable cible qu...

Pendidikan merupakan sesuatu hal yang penting dalam kehidupan dimana bertujuan untuk dapat meningkatkan kualitas sumber daya manusia (SDM). bukanlah hanya bersifat informal saja, akan tetapi ada formal seperti sekolah. Sekolah adalah rumah belajar bagi siswa. memiliki peran sangat dan tanggung jawab cukup besar sekolah harus membuat siswa aman nyaman serta melatih seluruh kedisiplinan salah sat...

Abstract All over the world desecration is a major factor for livelihood and plantation. There are various types of desecrations air ( or desecration), water desecration, Industrial noise urban etc. In India Act 1981 prescribes functions Central Desecration Control Board (CPCB) at open level state control board about desecration. 1974 gives prevention 1986 section 2(a) explains under rules, 200...