Data Generalization

Data Generalization And thought comment interrogatory forgeing The retrieval of info from informationbases, and the occupation of aggregate functions ( such as summation, counting, etc.) to the selective information represent an important functionality of selective informationbase systems. However, dubiousness processing is non data mining. Query processing: Retrieves sets of data from databases and can compute aggregate functions on the retrieved data. Data mining: analyzes the data and discovers interesting patterns hidden in the database. What is creation description? A concept usually refers to a collection of data such as stereos, frequent buyers, potassium alum students, and so on. As a data mining task, concept description is not a simple enumeration of the data. Instead, it generates descriptions for photo and comparison of the data. Concept description is sometimes called class description when the concept to be describ ed refers to a class of objects. enactment provides a compendious and picture summarization of the given collection of data. Concept or class comparison (also known as discrimination) provides descriptions comparing two or more collections of data. What is Data abstract entity?

Is a process which abstracts a large set of task-relevant data in a database from a relatively low abstract level to high conceptual levels. Concept description has blotto ties with data generalization. devoted the large amount of data stored in databases, it is useful to be able to describe concepts in brief terms at reason out (rather than low) levels of abstraction. Allowing data sets to b e generalized at two-fold levels of abstrac! tion facilitates users in examining the general behavior of the data. fashion model: effrontery the All Electronics database, for example, instead of examining individual customer transactions, sales managers may prefer to view the data generalized to high levels, such as summarized by customer groups...If you want to give out a full essay, order it on our website: OrderEssay.net

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