Mercurial > hg > camir-aes2014
annotate toolboxes/FullBNT-1.0.7/nethelp3.3/mlppak.htm @ 0:e9a9cd732c1e tip
first hg version after svn
| author | wolffd |
|---|---|
| date | Tue, 10 Feb 2015 15:05:51 +0000 |
| parents | |
| children |
| rev | line source |
|---|---|
| wolffd@0 | 1 <html> |
| wolffd@0 | 2 <head> |
| wolffd@0 | 3 <title> |
| wolffd@0 | 4 Netlab Reference Manual mlppak |
| wolffd@0 | 5 </title> |
| wolffd@0 | 6 </head> |
| wolffd@0 | 7 <body> |
| wolffd@0 | 8 <H1> mlppak |
| wolffd@0 | 9 </H1> |
| wolffd@0 | 10 <h2> |
| wolffd@0 | 11 Purpose |
| wolffd@0 | 12 </h2> |
| wolffd@0 | 13 Combines weights and biases into one weights vector. |
| wolffd@0 | 14 |
| wolffd@0 | 15 <p><h2> |
| wolffd@0 | 16 Synopsis |
| wolffd@0 | 17 </h2> |
| wolffd@0 | 18 <PRE> |
| wolffd@0 | 19 w = mlppak(net) |
| wolffd@0 | 20 </PRE> |
| wolffd@0 | 21 |
| wolffd@0 | 22 |
| wolffd@0 | 23 <p><h2> |
| wolffd@0 | 24 Description |
| wolffd@0 | 25 </h2> |
| wolffd@0 | 26 <CODE>w = mlppak(net)</CODE> takes a network data structure <CODE>net</CODE> and |
| wolffd@0 | 27 combines the component weight matrices bias vectors into a single row |
| wolffd@0 | 28 vector <CODE>w</CODE>. The facility to switch between these two |
| wolffd@0 | 29 representations for the network parameters is useful, for example, in |
| wolffd@0 | 30 training a network by error function minimization, since a single |
| wolffd@0 | 31 vector of parameters can be handled by general-purpose optimization |
| wolffd@0 | 32 routines. |
| wolffd@0 | 33 |
| wolffd@0 | 34 <p>The ordering of the paramters in <CODE>w</CODE> is defined by |
| wolffd@0 | 35 <PRE> |
| wolffd@0 | 36 |
| wolffd@0 | 37 w = [net.w1(:)', net.b1, net.w2(:)', net.b2]; |
| wolffd@0 | 38 </PRE> |
| wolffd@0 | 39 |
| wolffd@0 | 40 where <CODE>w1</CODE> is the first-layer weight matrix, <CODE>b1</CODE> is the |
| wolffd@0 | 41 first-layer bias vector, <CODE>w2</CODE> is the second-layer weight matrix, |
| wolffd@0 | 42 and <CODE>b2</CODE> is the second-layer bias vector. |
| wolffd@0 | 43 |
| wolffd@0 | 44 <p><h2> |
| wolffd@0 | 45 See Also |
| wolffd@0 | 46 </h2> |
| wolffd@0 | 47 <CODE><a href="mlp.htm">mlp</a></CODE>, <CODE><a href="mlpunpak.htm">mlpunpak</a></CODE>, <CODE><a href="mlpfwd.htm">mlpfwd</a></CODE>, <CODE><a href="mlperr.htm">mlperr</a></CODE>, <CODE><a href="mlpbkp.htm">mlpbkp</a></CODE>, <CODE><a href="mlpgrad.htm">mlpgrad</a></CODE><hr> |
| wolffd@0 | 48 <b>Pages:</b> |
| wolffd@0 | 49 <a href="index.htm">Index</a> |
| wolffd@0 | 50 <hr> |
| wolffd@0 | 51 <p>Copyright (c) Ian T Nabney (1996-9) |
| wolffd@0 | 52 |
| wolffd@0 | 53 |
| wolffd@0 | 54 </body> |
| wolffd@0 | 55 </html> |