稀疏编码
From Ufldl
(→一审:@大黄蜂的思索) |
|||
Line 5: | Line 5: | ||
初译:@寅莹 | 初译:@寅莹 | ||
- | + | 一审:@大黄蜂的思索 | |
+ | ==== | ||
Sparse coding is a class of unsupervised methods for learning sets of over-complete bases to represent data efficiently. The aim of sparse coding is to find a set of basis vectors <math>\mathbf{\phi}_i</math> such that we can represent an input vector <math>\mathbf{x}</math> as a linear combination of these basis vectors: | Sparse coding is a class of unsupervised methods for learning sets of over-complete bases to represent data efficiently. The aim of sparse coding is to find a set of basis vectors <math>\mathbf{\phi}_i</math> such that we can represent an input vector <math>\mathbf{x}</math> as a linear combination of these basis vectors: |