Dot Product
내적은 두 신호가 얼마나 닮았는냐를 계산해주는 일이기도 함
Commutative PropertyInner products
Euclidean inner product
When vectors are randomly placed in high-dimensional space, they tend to be mostly orthogonal to each other, which may not accurately reflect their semantic relationships
Causal Inner product
Redefining inner product so that causally separated (independent) features are orthogonal to each other