Understanding Eigenvector & Eigenvalue geographically

Eigenvalues/vectors are instrumental to understanding electrical circuits, mechanical systems, ecology and even Google's PageRank algorithm.

accociated with a dimensional reduction.
eigenvalue: 크기, eigenvector: 방향

직관적으로 해당 개념을 잘 설명.
<source: http://setosa.io/ev/eigenvectors-and-eigenvalues/>