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author | Daniel Wolff |
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date | Fri, 19 Aug 2016 13:07:06 +0200 |
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Daniel@0 | 1 <html> |
Daniel@0 | 2 <head> |
Daniel@0 | 3 <title> |
Daniel@0 | 4 Netlab Reference Manual gmmactiv |
Daniel@0 | 5 </title> |
Daniel@0 | 6 </head> |
Daniel@0 | 7 <body> |
Daniel@0 | 8 <H1> gmmactiv |
Daniel@0 | 9 </H1> |
Daniel@0 | 10 <h2> |
Daniel@0 | 11 Purpose |
Daniel@0 | 12 </h2> |
Daniel@0 | 13 Computes the activations of a Gaussian mixture model. |
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 a = gmmactiv(mix, x) |
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 This function computes the activations <CODE>a</CODE> (i.e. the |
Daniel@0 | 28 probability <CODE>p(x|j)</CODE> of the data conditioned on each component density) |
Daniel@0 | 29 for a Gaussian mixture model. For the PPCA model, each activation |
Daniel@0 | 30 is the conditional probability of <CODE>x</CODE> given that it is generated |
Daniel@0 | 31 by the component subspace. |
Daniel@0 | 32 The data structure <CODE>mix</CODE> defines the mixture model, while the matrix |
Daniel@0 | 33 <CODE>x</CODE> contains the data vectors. Each row of <CODE>x</CODE> represents a single |
Daniel@0 | 34 vector. |
Daniel@0 | 35 |
Daniel@0 | 36 <p><h2> |
Daniel@0 | 37 See Also |
Daniel@0 | 38 </h2> |
Daniel@0 | 39 <CODE><a href="gmm.htm">gmm</a></CODE>, <CODE><a href="gmmpost.htm">gmmpost</a></CODE>, <CODE><a href="gmmprob.htm">gmmprob</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 |
Daniel@0 | 45 |
Daniel@0 | 46 </body> |
Daniel@0 | 47 </html> |