Question

Describe at least four different functions (functionalities) of data mining, and give an example for each one. For example, one function could be classification.

Answer 1

Q.Describe at last four different function (functionalities) of data mining,and give an example for each one. For example,one function could be classification.

Answer:

(i) Class/Concept Descriptions: Classes can be correlated with results. In simplified, descriptive and yet accurate ways, it can be helpful to define individual groups and concepts.These class or concept definitions are referred to as class.For example, in a company, the classes of items for sales include computer and printers, and concepts of customers include big spenders and budget spenders. Such descriptions of a class or a concept are called class/concept descriptions.

(ii)Data Characterization:

This refers to summarizing data of class under study. This class under study is called as Target Class.. For example. To study the characteristics of a software product whose sales increased by 15% two years ago, anyone can collect these type of data related to such products by running SQL queries

(ii)Data Discrimination:

It refers to the mapping or classification of a class with some predefined group or classes. The output of this process can be represented in many forms. Eg., bar charts, curves and pie charts.

(iv) classification :Classification is the process of finding a model that describes the data classes or concepts. The purpose is to be able to use this model to predict the class of objects whose class label is unknown. This derived model is based on the analysis of sets of training data.i.e. the data object whose class label is well known.