Re: [Scikit-learn-general] Cutting off HMMs

2014-01-26 Thread nipun batra
BTW, Sage has a Cythonized HMM implementation . Code on Github Types supported: 1. Discrete 2. Gaussian 3. Mixture of

Re: [Scikit-learn-general] Suggested technique for 1 D clustering

2013-12-10 Thread nipun batra
nline image 1] On Thu, Mar 7, 2013 at 7:52 PM, nipun batra wrote: > Hi, > Sorry for late reply. I was playing with REDD > <http://redd.csail.mit.edu/>dataset for Non Intrusive Load Monitoring. Two > issues with k-means: > >1. Due to inherent nature of algorithm an

Re: [Scikit-learn-general] Finding 'optimum' number of cluster assignments (some domain information present)

2013-12-08 Thread nipun batra
Forgot to mention that true labels are *not *present. Thus, I had chosen *Silhouette* coefficient. On Sun, Dec 8, 2013 at 5:02 PM, nipun batra wrote: > Hi, > > I am using *kmean++* to cluster my data series. From my domain expertise, > I know that the number of cluster varies bet

[Scikit-learn-general] Finding 'optimum' number of cluster assignments (some domain information present)

2013-12-08 Thread nipun batra
Hi, I am using *kmean++* to cluster my data series. From my domain expertise, I know that the number of cluster varies between 2 and 4. To find this *optimum* number of clusters, I was doing the following (pseudocode): for num_cluster in [2, 3, 4]: cluster_using_kmeans (num_cluster, data)

Re: [Scikit-learn-general] GSoC 2013

2013-03-22 Thread nipun batra
ot of work. > > Maybe ask on the Pandas mailing list? > > Cheers, > Andy > > > On 03/22/2013 02:11 PM, nipun batra wrote: > > Might be a bit off topic. Is Structured Learning still not a priority for > sklearn? > I would have ideally liked to have put my develo

Re: [Scikit-learn-general] GSoC 2013

2013-03-22 Thread nipun batra
Might be a bit off topic. Is Structured Learning still not a priority for sklearn? I would have ideally liked to have put my development code in sklearn for HMM's (since what i need would goes beyond what is currently implemented in sklearn). I have started porting Murphy's HMM toolbox

Re: [Scikit-learn-general] Suggested technique for 1 D clustering

2013-03-07 Thread nipun batra
giant-d > space. > > Do you have any general data set you could release w.r.t. this variable > nipun? the first question has very clear breaks if you use a histogram alone > > > > > On Tue, Mar 5, 2013 at 9:59 AM, nipun batra wrote: > >> It should. I would have s

Re: [Scikit-learn-general] Suggested technique for 1 D clustering

2013-03-05 Thread nipun batra
: > ..does kmeans not work? > > > On Tue, Mar 5, 2013 at 9:51 AM, nipun batra wrote: > >> Hi, >> What clustering technique (with implementation in sklearn) is recommended >> for 1d data? >> >> >> -

[Scikit-learn-general] Suggested technique for 1 D clustering

2013-03-05 Thread nipun batra
Hi, What clustering technique (with implementation in sklearn) is recommended for 1d data? -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http

[Scikit-learn-general] Exact and Approximate Factorial HMM

2013-02-21 Thread nipun batra
Hi, Is there any stub lying for Factorial HMM in scikits-learn. I see that there are Zoubin Ghahramani's page has some Matlab code . Is there any plan in the near future to add these HMM variants? If not, what is the best way to add these, l

[Scikit-learn-general] Intra Cluster Variance in Various Clustering Algorithms

2013-02-21 Thread nipun batra
Hi, Is there a way (already existing) , whereby we can get the variance about the mean/cluster center (chosen by clustering algorithm) of all the samples belonging to that cluster. If not, is the following approach optimal? For each cluster label: For all ids belonging to this cluster label: Find v

Re: [Scikit-learn-general] Example for Discrete (Multinomial) HMM

2013-02-21 Thread nipun batra
mfort < alexandre.gramf...@inria.fr> wrote: > hi, > > it's true that the MultinomialHMM does not appear in any example which > should be the case. A PR with an example would indeed be nice. > > Cheers, > Alex > > On Tue, Feb 19, 2013 at 7:00 AM, nipun batra > w

[Scikit-learn-general] Example for Discrete (Multinomial) HMM

2013-02-18 Thread nipun batra
Hi, I had been going through HMM description and found the Gaussian HMM example very helpful. However, the documentation does not provide an example the discrete variant. I faced certain errors while writing my own and that led me to known bugs and their work arounds. While the Rain/Sun/Cloudy exam