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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A stage of the KDD process in which new data is added to the existing selection
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The process of finding a solution for a problem simply by enumerating all possible solutions according to some pre-defined order and then testing them
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The distance between two points as calculated using the Pythagoras theorem
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None of the above
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Detailed explanation-1: -In mathematics, the Euclidean distance between two points in Euclidean space is the length of a line segment between the two points. It can be calculated from the Cartesian coordinates of the points using the Pythagorean theorem, therefore occasionally being called the Pythagorean distance.
Detailed explanation-2: -We can rewrite the Pythagorean theorem as d=√((x 2-x 1)²+(y 2-y 1)²) to find the distance between any two points.
Detailed explanation-3: -Determine the Euclidean distance between two points (a, b) and (-a, -b). d = 2√(a2+b2). Hence, the distance between two points (a, b) and (-a, -b) is 2√(a2+b2).
Detailed explanation-4: -Answer» C. the distance between two points as calculated using the pythagoras theorem.
Detailed explanation-5: -The Euclidean distance between two points in a two-dimensional space can be calculated using the Pythagorean Theorem formula √[(x2-x1)² + (y2-y1)²] .