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Match the following $:$

$\begin{array}{clcl}  & \textbf{List – I} & & \textbf{List – II}  \\ \text{a.} & \text{Classification} & \text{i.} & \text{Principal component analysis} \\ \text{b.} & \text{Clustering } & \text{ii.} & \text{Branch and Bound} \\ \text{c.} & \text{Feature Extraction} & \text{iii.} & \text{K-nearest neighbour} \\ \text{d.} & \text{Feature Selection} & \text{iv.} & \text{K-means} \\ \end{array}$

$\textbf{Codes :}$

  1. $\text{a-iii; b-iv; c-ii; d-i}$
  2. $\text{a-iv; b-iii; c-i; d-ii}$
  3. $\text{a-iii; b-iv; c-i; d-ii}$
  4. $\text{a-iv; b-iii; c-ii; d-i}$
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Answer : C

      List – I                     List – II

a.    Classification           ===>      K-nearest neighbour  

b.    Clustering                ===>      K-means   

c.    Feature Extraction    ===>      Principal component analysis

d.    Feature Selection     ===>      Branch and Bound

Reference for all is Wikipedia
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