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annotate toolboxes/FullBNT-1.0.7/nethelp3.3/som.htm @ 0:e9a9cd732c1e tip
first hg version after svn
| author | wolffd |
|---|---|
| date | Tue, 10 Feb 2015 15:05:51 +0000 |
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| children |
| rev | line source |
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| wolffd@0 | 1 <html> |
| wolffd@0 | 2 <head> |
| wolffd@0 | 3 <title> |
| wolffd@0 | 4 Netlab Reference Manual som |
| wolffd@0 | 5 </title> |
| wolffd@0 | 6 </head> |
| wolffd@0 | 7 <body> |
| wolffd@0 | 8 <H1> som |
| wolffd@0 | 9 </H1> |
| wolffd@0 | 10 <h2> |
| wolffd@0 | 11 Purpose |
| wolffd@0 | 12 </h2> |
| wolffd@0 | 13 Creates a Self-Organising Map. |
| wolffd@0 | 14 |
| wolffd@0 | 15 <p><h2> |
| wolffd@0 | 16 Synopsis |
| wolffd@0 | 17 </h2> |
| wolffd@0 | 18 <PRE> |
| wolffd@0 | 19 |
| wolffd@0 | 20 net = som(nin, map_size) |
| wolffd@0 | 21 </PRE> |
| wolffd@0 | 22 |
| wolffd@0 | 23 |
| wolffd@0 | 24 <p><h2> |
| wolffd@0 | 25 Description |
| wolffd@0 | 26 </h2> |
| wolffd@0 | 27 <CODE>net = som(nin, map_size)</CODE> creates a SOM <CODE>net</CODE> |
| wolffd@0 | 28 with input dimension (i.e. data dimension) <CODE>nin</CODE> and map dimensions |
| wolffd@0 | 29 <CODE>map_size</CODE>. Only two-dimensional maps are currently implemented. |
| wolffd@0 | 30 |
| wolffd@0 | 31 <p>The fields in <CODE>net</CODE> are |
| wolffd@0 | 32 <PRE> |
| wolffd@0 | 33 |
| wolffd@0 | 34 type = 'som' |
| wolffd@0 | 35 nin = number of inputs |
| wolffd@0 | 36 map_dim = dimension of map (constrained to be 2) |
| wolffd@0 | 37 map_size = grid size: number of nodes in each dimension |
| wolffd@0 | 38 num_nodes = number of nodes: the product of values in map_size |
| wolffd@0 | 39 map = map_dim+1 dimensional array containing nodes |
| wolffd@0 | 40 inode_dist = map of inter-node distances using Manhatten metric |
| wolffd@0 | 41 </PRE> |
| wolffd@0 | 42 |
| wolffd@0 | 43 |
| wolffd@0 | 44 <p>The map contains the node vectors arranged column-wise in the first |
| wolffd@0 | 45 dimension of the array. |
| wolffd@0 | 46 |
| wolffd@0 | 47 <p><h2> |
| wolffd@0 | 48 See Also |
| wolffd@0 | 49 </h2> |
| wolffd@0 | 50 <CODE><a href="kmeans.htm">kmeans</a></CODE>, <CODE><a href="somfwd.htm">somfwd</a></CODE>, <CODE><a href="somtrain.htm">somtrain</a></CODE><hr> |
| wolffd@0 | 51 <b>Pages:</b> |
| wolffd@0 | 52 <a href="index.htm">Index</a> |
| wolffd@0 | 53 <hr> |
| wolffd@0 | 54 <p>Copyright (c) Ian T Nabney (1996-9) |
| wolffd@0 | 55 |
| wolffd@0 | 56 |
| wolffd@0 | 57 </body> |
| wolffd@0 | 58 </html> |