Figure 15

Cosine similarities between basis vectors. The vertical axis represents the indices of \(h_{k}\), i.e., the kth row vector of H, and the horizontal axis represents the indices of \(w_{k'}\), i.e., the \(k'\)th column vector of W. From top to bottom: \(k=1,\ldots,K=10\); from left to right \(k'=1,\ldots,K=10\). Scale bar displays the magnitude of cosine similarities between \(h_{k}\) and \(w_{k'}\)