Question

In a dataset, what reprsent an attribute or feature?

Answer 1

Answer:

In the simplest case, a dataset only contains data that is a matrix of numerical values. In the above example, every row vector in the data matrix becomes an observation, a sample, in the dataset, and every column vector represents an individual variable, a feature.

Answer 2

An attribute or feature represents qualitative values that are grouped in order to generate a set of data.

• Attributes represent the characteristics of an entity.
• Attributes are usually used to elaborate the type of that entity.
• Three types of attributes that are associated in case of a problem are description, management, and type.
• Description: A concise explanation for a data set.
• Management: Whether a problem is associated with a data set.
• Type: Represents the type or format of a dataset.
• Date of birth is an attribute in the case of a person's entity type.

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