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BAN1106 Data Mining and Warehousing (Data) questions and answers.
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BAN1106 Data Mining and Warehousing (Data) questions and answers.
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BAN1106: Data Mining andWarehousing (Data) questions
and answers
Types of Data Sets - answer 1. Record
2. Graph and Network
3. Ordered
4. Spatial, image, and multimedia
Important Characteristics of Structured Data - answer 1.
Dimensionality
2. Sparsity
3. Resolution
4. Distribution
Data Object - answer -represents an entity
-also called samples, examples, instances, data points, objects,
tuples
-described by attributes
Attribute - answer -A data field, representing a characteristic or
feature of a data object.
-Also called dimensions, features, variables
Attribute Types - answer 1. Nominal
2. Binary
3. Ordinal`
, Nominal - answer Categories, states, or "names of things"
Binary - answer Nominal attribute with only 2 states (0 and 1)
Two Types of Binary - answer 1. Symmetric Binary
2. Asymmetric Binary
Symmetric Binary - answer Both outcomes equally important (ex:
gender)
Asymmetric Binary - answer Outcomes not equally important. (ex:
medical test; positive vs. negative)
Ordinal - answer Values have a meaningful order (ranking) but
magnitude between successive values is not known.
Numeric Attribute Types - answer 1. Quantity
2. Interval
3. Ratio
Quantity - answer Integer or real-valued
Interval - answer -Measured on a scale of equal-sized units
-Values have order
-No true zero-point
Ratio - answer -Inherent zero-point
-We can speak of values as being an order of magnitude larger than
the unit of measurement
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