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| author | Daniel Wolff |
|---|---|
| date | Fri, 19 Aug 2016 13:07:06 +0200 |
| parents | |
| children |
| rev | line source |
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| Daniel@0 | 1 <html> |
| Daniel@0 | 2 <head> |
| Daniel@0 | 3 <title> |
| Daniel@0 | 4 Netlab Reference Manual mdngrad |
| Daniel@0 | 5 </title> |
| Daniel@0 | 6 </head> |
| Daniel@0 | 7 <body> |
| Daniel@0 | 8 <H1> mdngrad |
| Daniel@0 | 9 </H1> |
| Daniel@0 | 10 <h2> |
| Daniel@0 | 11 Purpose |
| Daniel@0 | 12 </h2> |
| Daniel@0 | 13 Evaluate gradient of error function for Mixture Density Network. |
| Daniel@0 | 14 |
| Daniel@0 | 15 <p><h2> |
| Daniel@0 | 16 Synopsis |
| Daniel@0 | 17 </h2> |
| Daniel@0 | 18 <PRE> |
| Daniel@0 | 19 |
| Daniel@0 | 20 g = mdngrad(net, x, t) |
| Daniel@0 | 21 </PRE> |
| Daniel@0 | 22 |
| Daniel@0 | 23 |
| Daniel@0 | 24 <p><h2> |
| Daniel@0 | 25 Description |
| Daniel@0 | 26 </h2> |
| Daniel@0 | 27 |
| Daniel@0 | 28 <CODE>g = mdngrad(net, x, t)</CODE> takes a mixture density network data |
| Daniel@0 | 29 structure <CODE>net</CODE>, a matrix <CODE>x</CODE> of input vectors and a matrix |
| Daniel@0 | 30 <CODE>t</CODE> of target vectors, and evaluates the gradient <CODE>g</CODE> of the |
| Daniel@0 | 31 error function with respect to the network weights. The error function |
| Daniel@0 | 32 is negative log likelihood of the target data. Each row of <CODE>x</CODE> |
| Daniel@0 | 33 corresponds to one input vector and each row of <CODE>t</CODE> corresponds to |
| Daniel@0 | 34 one target vector. |
| Daniel@0 | 35 |
| Daniel@0 | 36 <p><h2> |
| Daniel@0 | 37 See Also |
| Daniel@0 | 38 </h2> |
| Daniel@0 | 39 <CODE><a href="mdn.htm">mdn</a></CODE>, <CODE><a href="mdnfwd.htm">mdnfwd</a></CODE>, <CODE><a href="mdnerr.htm">mdnerr</a></CODE>, <CODE><a href="mdnprob.htm">mdnprob</a></CODE>, <CODE><a href="mlpbkp.htm">mlpbkp</a></CODE><hr> |
| Daniel@0 | 40 <b>Pages:</b> |
| Daniel@0 | 41 <a href="index.htm">Index</a> |
| Daniel@0 | 42 <hr> |
| Daniel@0 | 43 <p>Copyright (c) Ian T Nabney (1996-9) |
| Daniel@0 | 44 <p>David J Evans (1998) |
| Daniel@0 | 45 |
| Daniel@0 | 46 </body> |
| Daniel@0 | 47 </html> |