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High-dimensional effects
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123.
Concentration of Measure
easy
What is the concentration of measure phenomenon in high-dimensional spaces?
A
Data points cluster near the center of the feature space, making the boundary regions empty
B
Feature correlations increase with dimensionality, making all variables nearly identical in high dimensions
C
Variance concentrates along the first few principal components, collapsing the effective dimensionality
D
Distances between random points concentrate around a common value, making nearest neighbors uninformative
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