DATABASE FUNDAMENTALS
DATA WAREHOUSING AND DATA MINING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Data Characterization
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Data Classification C
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Data discrimination
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Data selection
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Detailed explanation-1: -Data characterization is a summarization of the general characteristics or features of a target class of data. The data corresponding to the user-specified class are typically collected by a query.
Detailed explanation-2: -Summarization is a key data mining concept which in-volves techniques for finding a compact description of a dataset. Simple summarization methods such as tabulat-ing the mean and standard deviations are often applied for exploratory data analysis, data visualization and automated report generation.
Detailed explanation-3: -Data Generalization and Summarization-based Characterization » A process which abstracts a large set of task-relevant data in a database from a low conceptual levels to higher ones.
Detailed explanation-4: -Data Characterization − This refers to summarizing data of class under study. This class under study is called as Target Class.
Detailed explanation-5: -There are three general characteristics of Data Sets namely: Dimensionality, Sparsity, and Resolution.