There are three kinds of data warehouse applications such as information processing, analytical processing, and data mining.Information processing − It provides querying, basic numerical analysis, and documenting using crosstabs, tables, charts, or graphs. A modern trend in data warehouse data processing is to make low-cost web-based accessing tools that it ... Read More

Data Warehousing is an approach that can collect and manage data from multiple sources to provide the business a significant business insight. A data warehouse is specifically designed to provide management decisions.In simple terms, a data warehouse defines a database that is maintained independently from an organization’s operational databases. Data ... Read More

There are various methods for the generation of concept hierarchies for nominal data as follows −Specification of a partial ordering of attributes explicitly at the schema level by users or professionals − Concept hierarchies for nominal attributes or dimensions generally contains a set of attributes. A user or professionals can ... Read More

There are the major steps involved in data preprocessing, namely, data cleaning, data integration, data reduction, and data transformation as follows −Data Cleaning − Data cleaning routines operate to “clean” the information by filling in missing values, smoothing noisy information, identifying or eliminating outliers, and resolving deviation. If users understand ... Read More

An attribute is a data field, defining a characteristic of a data object. The nouns attribute, dimension, feature, and variable are used correspondently in the literature. The dimension is generally used in data warehousing. Machine learning literature influence to use the term feature, while statisticians prefer the method svariable.Data mining ... Read More

There are various aspects of mining methodology which are as follows −Mining various and new kinds of knowledge − Data mining covers a broad spectrum of data analysis and knowledge discovery services, from data characterization and discrimination to relations and correlation analysis, classification, regression, clustering, outlier methods, sequence methods, and ... Read More

A web search engine is a specialized computer server that searches for data on the Web. The search results of a user query are restored as a list (known as hits). The hits can include web pages, images, and different types of files.There are various search engines also search and ... Read More

Classification is the procedure of discovering a model that defines and categorize data classes or concepts. The model are based on the search of a set of training data (i.e., data objects for which the class labels are famous). The model can predict the class label of objects for which ... Read More

One solution is for such companies to support consumers with several opt-out choices, enabling consumers to describe limitations on the use of their personal information, such asThe consumer’s personal data are not to be utilized at all for data mining.The consumer’s data can be used for data mining, but the ... Read More

Visual data mining finds implicit and beneficial knowledge from huge data sets using data and knowledge visualization methods. The human visual system is managed by the eyes and brain, the latter of which can be think of as a dynamic, largely parallel processing and reasoning engine including a huge knowledge ... Read More