Hey Fernando, By setting use_pca=True, I still get the same error. However, setting it to False , the program runs. (though very slowly) If i run the LMNN example from http://all-umass.github.io/metric-learn/metric_learn.lmnn.html , it runs fine without even setting the use_pca parameter.
Would you have any advice on how to circumvent this problem? PS: my dataset shape is 500 x 6000. Regards, Deepak On Tue, Apr 12, 2016 at 2:38 PM, Fernando J. Iglesias García < [email protected]> wrote: > Hi Deepak, > > Then, there might be a problem (i.e. wrong dimension) with the matrix > passed to initalise LMNN. I suggest you to try setting use_pca to True. > That will make Shogun's LMNN to start using a matrix obtained by applying > PCA. > > Modifying line 55 in your gist to > > lmnn = LMNN(k=3, learn_rate=1e-3, use_pca=True) > > should do it. > > Let me know how it goes. > > Cheers, > Fernando. > > On 12 April 2016 at 18:52, Deepak Rishi <[email protected]> wrote: > >> Hi Fernando, >> >> The gist is at >> https://gist.github.com/deerishi/e4ea6257e88ea924cc0fb091a5af1670 . >> >> I did not use the parameter use_pca. Nor did I call the PCA function. >> >> @Chintak , have you used LMNN before? >> >> >> Regards, >> Deepak >> >> On Tue, Apr 12, 2016 at 4:33 AM, Fernando J. Iglesias García < >> [email protected]> wrote: >> >>> Dear Deepak, >>> >>> Can you share in a gist, pastebin, or the like, a snippet with your >>> relevant code? Particularly at this moment I am interested to know whether >>> you are using the parameter use_pca. >>> >>> Cheers, >>> Fernando. >>> >>> On 12 April 2016 at 08:39, Deepak Rishi <[email protected]> wrote: >>> >>>> Hi everyone, >>>> >>>> I am using the python package metric_learn >>>> http://all-umass.github.io/metric-learn/metric_learn.lmnn.html for >>>> Large Margin Nearest Neighbour. It uses LMNN from Shogun if it is >>>> installed. Since Shogun has a faster implementation for LMNN I decied to >>>> use it. >>>> >>>> When I run my code for LMNN in python I get the error "SystemError: >>>> [ERROR] In file /home/drishi/shogun-4.1.0/src/shogun/preprocessor/PCA.cpp >>>> line 102: target dimension should be less or equal to than minimum of N and >>>> D >>>> " >>>> >>>> Any advice on why is this error occurring ? >>>> >>>> >>>> Regards, >>>> Deepak >>>> >>> >>> >> >
