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obtaining state transition matrix from k-means
Dear team,
For an HMM project, i'm trying to build the lambda model. For transition matrix calculation, i'm trying to use k-means and i need to get an NxN matrix as a result.
With the help of kmeans function of Statistical toolbox i can get an n-by-1 vector IDX containing the cluster indices of each point.
The problem is that how can i find state transitions? Is there a special function that i can use? In another words, i need to get the probablity matrix P(i,j) = (N_i,j)/n_i (where i and j are state numbers)
Thanks in advance...
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 burcu
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12/11/2009 12:30:27 PM |
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"burcu " <burcu102@hotmail.com> wrote in message
news:hfte13$o6u$1@fred.mathworks.com...
> Dear team,
>
> For an HMM project, i'm trying to build the lambda model. For transition
> matrix calculation, i'm trying to use k-means and i need to get an NxN
> matrix as a result.
> With the help of kmeans function of Statistical toolbox i can get an
> n-by-1 vector IDX containing the cluster indices of each point.
>
> The problem is that how can i find state transitions? Is there a special
> function that i can use? In another words, i need to get the probablity
> matrix P(i,j) = (N_i,j)/n_i (where i and j are state numbers)
http://www.mathworks.com/access/helpdesk/help/toolbox/stats/hmmestimate.html
--
Steve Lord
slord@mathworks.com
comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ
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Steven
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12/11/2009 2:43:44 PM
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1 Replies
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