Neural Network

Author: lawlite19

readme.md

@@ -438,14 +438,11 @@ from sklearn.linear_model import LogisticRegression
  - ![\Delta _{ij}^{(l)} = 0](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=%5CDelta%20_%7Bij%7D%5E%7B%28l%29%7D%20%3D%200)（![\Delta ](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=%5CDelta%20)是大写的![\delta ](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=%5Cdelta%20)）
  - for i=1-m:
  ![{a^{(1)}} = {x^{(i)}}](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=%7Ba%5E%7B%281%29%7D%7D%20%3D%20%7Bx%5E%7B%28i%29%7D%7D)
-正向传播计算![{a^{(l)}}](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=%7Ba%5E%7B%28l%29%7D%7D)（l=2,3,4...L）
-反向计算![{\delta ^{(L)}}](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=%7B%5Cdelta%20%5E%7B%28L%29%7D%7D)、![{\delta ^{(L - 1)}}](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=%7B%5Cdelta%20%5E%7B%28L%20-%201%29%7D%7D)...![{\delta ^{(2)}}](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=%7B%5Cdelta%20%5E%7B%282%29%7D%7D)；   
-![\Delta _{ij}^{(l)} = \Delta _{ij}^{(l)} + a_j^{(l)}{\delta ^{(l + 1)}}](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=%5CDelta%20_%7Bij%7D%5E%7B%28l%29%7D%20%3D%20%5CDelta%20_%7Bij%7D%5E%7B%28l%29%7D%20%2B%20a_j%5E%7B%28l%29%7D%7B%5Cdelta%20%5E%7B%28l%20%2B%201%29%7D%7D)     
-![\begin{gathered}
-  D_{ij}^{(l)} = \frac{1}{m}\Delta _{ij}^{(l)} + \lambda \theta _{ij}^l\begin{array}{c}    {}& {(j \ne 0)}  \end{array}  \hfill \\
-  D_{ij}^{(l)} = \frac{1}{m}\Delta _{ij}^{(l)} + \lambda \theta _{ij}^lj = 0\begin{array}{c}    {}& {j = 0}  \end{array}  \hfill \\ 
-\end{gathered} ](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=%5Cbegin%7Bgathered%7D%0A%20%20D_%7Bij%7D%5E%7B%28l%29%7D%20%3D%20%5Cfrac%7B1%7D%7Bm%7D%5CDelta%20_%7Bij%7D%5E%7B%28l%29%7D%20%2B%20%5Clambda%20%5Ctheta%20_%7Bij%7D%5El%5Cbegin%7Barray%7D%7Bc%7D%20%20%20%20%7B%7D%26%20%7B%28j%20%5Cne%200%29%7D%20%20%5Cend%7Barray%7D%20%20%5Chfill%20%5C%5C%0A%20%20D_%7Bij%7D%5E%7B%28l%29%7D%20%3D%20%5Cfrac%7B1%7D%7Bm%7D%5CDelta%20_%7Bij%7D%5E%7B%28l%29%7D%20%2B%20%5Clambda%20%5Ctheta%20_%7Bij%7D%5Elj%20%3D%200%5Cbegin%7Barray%7D%7Bc%7D%20%20%20%20%7B%7D%26%20%7Bj%20%3D%200%7D%20%20%5Cend%7Barray%7D%20%20%5Chfill%20%5C%5C%20%0A%5Cend%7Bgathered%7D%20)
-
+正向传播计算![{a^{(l)}}](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=%7Ba%5E%7B%28l%29%7D%7D)（l=2,3,4...L）      
+反向计算![{\delta ^{(L)}}](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=%7B%5Cdelta%20%5E%7B%28L%29%7D%7D)、![{\delta ^{(L - 1)}}](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=%7B%5Cdelta%20%5E%7B%28L%20-%201%29%7D%7D)...![{\delta ^{(2)}}](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=%7B%5Cdelta%20%5E%7B%282%29%7D%7D)；       
+![\Delta _{ij}^{(l)} = \Delta _{ij}^{(l)} + a_j^{(l)}{\delta ^{(l + 1)}}](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=%5CDelta%20_%7Bij%7D%5E%7B%28l%29%7D%20%3D%20%5CDelta%20_%7Bij%7D%5E%7B%28l%29%7D%20%2B%20a_j%5E%7B%28l%29%7D%7B%5Cdelta%20%5E%7B%28l%20%2B%201%29%7D%7D)          
+![D_{ij}^{(l)} = \frac{1}{m}\Delta _{ij}^{(l)} + \lambda \theta _{ij}^l\begin{array}{c}    {}& {(j \ne 0)}  \end{array} ](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=D_%7Bij%7D%5E%7B%28l%29%7D%20%3D%20%5Cfrac%7B1%7D%7Bm%7D%5CDelta%20_%7Bij%7D%5E%7B%28l%29%7D%20%2B%20%5Clambda%20%5Ctheta%20_%7Bij%7D%5El%5Cbegin%7Barray%7D%7Bc%7D%20%20%20%20%7B%7D%26%20%7B%28j%20%5Cne%200%29%7D%20%20%5Cend%7Barray%7D%20)      
+![D_{ij}^{(l)} = \frac{1}{m}\Delta _{ij}^{(l)} + \lambda \theta _{ij}^lj = 0\begin{array}{c}    {}& {j = 0}  \end{array} ](http://chart.apis.google.com/chart?cht=tx&chs=1x0&chf=bg,s,FFFFFF00&chco=000000&chl=D_%7Bij%7D%5E%7B%28l%29%7D%20%3D%20%5Cfrac%7B1%7D%7Bm%7D%5CDelta%20_%7Bij%7D%5E%7B%28l%29%7D%20%2B%20%5Clambda%20%5Ctheta%20_%7Bij%7D%5Elj%20%3D%200%5Cbegin%7Barray%7D%7Bc%7D%20%20%20%20%7B%7D%26%20%7Bj%20%3D%200%7D%20%20%5Cend%7Barray%7D%20)