NEWFFTD examples?
in [Matlab]
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From: Greg Heath on 23 Jun 2010 11:13 I am looking for nontrivial SOLVED examples of the use of newfftd (MATLAB's Focused Time Delay NN). The online example obtained from the help and doc commands is useless for understanding how to properly use the input delay specification Pi when trying to train and simulate a net that has been previously created. I think the problem I'm having is that the net can be created using matrices but training and simulation require data conversion to cell sequences. I searched the Google Group archive and obtained hits from 30 threads. Unfortunately, most of the threads were 1 post pleas for help that never came. However, two posts did mention the laser data example in the MATHWORKS website documentation and one of them also mentioned "Matlab Solution Number 1-178VI". Will someone please send or post a copy of the laser data (I don't have it on my MATLAB 6.5 system) AND Give me the URL for MSN 1-178VI. Thank you very much. Greg
From: jia on 23 Jun 2010 12:04 Hello Greg the code can be found from the online document http://www.mathworks.com/access/helpdesk/help/pdf_doc/nnet/nnet.pdf. I upload the data as you can see from the following URL. http://www.mediafire.com/?5ojtidyme2w URL for MSN 1-178VI. http://www.mathworks.com/support/solutions/en/data/1-178VI/index.html?product=NN&solution=1-178VI Hope this helps. Greg Heath <heath(a)alumni.brown.edu> wrote in message <5d97549a-c9b1-4929-ae70-f2d114af31df(a)a1g2000vbl.googlegroups.com>... > I am looking for nontrivial SOLVED examples of the > use of newfftd (MATLAB's Focused Time Delay NN). > The online example obtained from the help and doc > commands is useless for understanding how to > properly use the input delay specification Pi > when trying to train and simulate a net that has > been previously created. > > I think the problem I'm having is that the net can > be created using matrices but training and > simulation require data conversion to cell > sequences. > > I searched the Google Group archive and obtained > hits from 30 threads. Unfortunately, most of the > threads were 1 post pleas for help that never came. > > However, two posts did mention the laser data > example in the MATHWORKS website documentation > and one of them also mentioned "Matlab Solution > Number 1-178VI". > > Will someone please send or post a copy of the > laser data (I don't have it on my MATLAB 6.5 > system) > > AND > > Give me the URL for MSN 1-178VI. > > Thank you very much. > > Greg
From: jia on 23 Jun 2010 12:15 The link of the online document is invalid. Here is the code: load laser y = y(1:600)'; y = con2seq(y); ftdnn_net = newfftd(y,y,[1:8],5); ftdnn_net.trainParam.show = 10; ftdnn_net.trainParam.epochs = 50; p = y(9:end); t = y(9:end); Pi=y(1:8); ftdnn_net = train(ftdnn_net,p,t,Pi); yp = sim(ftdnn_net,p,Pi); yp = cell2mat(yp); e = yp-cell2mat(t); rmse = sqrt(mse(e)) rmse = 3.2337 p = y(8:end-1); clear Pi Pi=y(1:7); lin_net = newlind(p,t,Pi); lin_yp = sim(lin_net,p,Pi); lin_yp = cell2mat(lin_yp); lin_e = lin_yp-cell2mat(t); lin_rmse = sqrt(mse(lin_e)) lin_rmse = 21.1386 "jia " <kukuzry(a)gmail.com> wrote in message <hvtb9l$sg1$1(a)fred.mathworks.com>... > Hello Greg > the code can be found from the online document http://www.mathworks.com/access/helpdesk/help/pdf_doc/nnet/nnet.pdf. > > I upload the data as you can see from the following URL. > http://www.mediafire.com/?5ojtidyme2w > > URL for MSN 1-178VI. > http://www.mathworks.com/support/solutions/en/data/1-178VI/index.html?product=NN&solution=1-178VI > > Hope this helps. > > Greg Heath <heath(a)alumni.brown.edu> wrote in message <5d97549a-c9b1-4929-ae70-f2d114af31df(a)a1g2000vbl.googlegroups.com>... > > I am looking for nontrivial SOLVED examples of the > > use of newfftd (MATLAB's Focused Time Delay NN). > > The online example obtained from the help and doc > > commands is useless for understanding how to > > properly use the input delay specification Pi > > when trying to train and simulate a net that has > > been previously created. > > > > I think the problem I'm having is that the net can > > be created using matrices but training and > > simulation require data conversion to cell > > sequences. > > > > I searched the Google Group archive and obtained > > hits from 30 threads. Unfortunately, most of the > > threads were 1 post pleas for help that never came. > > > > However, two posts did mention the laser data > > example in the MATHWORKS website documentation > > and one of them also mentioned "Matlab Solution > > Number 1-178VI". > > > > Will someone please send or post a copy of the > > laser data (I don't have it on my MATLAB 6.5 > > system) > > > > AND > > > > Give me the URL for MSN 1-178VI. > > > > Thank you very much. > > > > Greg
From: Steven Lord on 23 Jun 2010 13:04 "Greg Heath" <heath(a)alumni.brown.edu> wrote in message news:5d97549a-c9b1-4929-ae70-f2d114af31df(a)a1g2000vbl.googlegroups.com... >I am looking for nontrivial SOLVED examples of the > use of newfftd (MATLAB's Focused Time Delay NN). > The online example obtained from the help and doc > commands is useless for understanding how to > properly use the input delay specification Pi > when trying to train and simulate a net that has > been previously created. > > I think the problem I'm having is that the net can > be created using matrices but training and > simulation require data conversion to cell > sequences. Greg, If you go to the bottom of the reference page for NEWFFTD in the online documentation: http://www.mathworks.com/access/helpdesk/help/toolbox/nnet/newfftd.html there's a link titled "Provide feedback about this page" in the lower-right corner. If you can describe in a little more depth what type of example you expected to find on that page but didn't, our documentation staff can consider adding such an example to the page in a future release. -- Steve Lord slord(a)mathworks.com comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ To contact Technical Support use the Contact Us link on http://www.mathworks.com
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