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