Re: [Scikit-learn-general] Nearest neighbor warning when running LocallyLinearEmbedding

2012-01-23 Thread Pablo Ruggia
I'm also having trouble with Nearest neighbor, although not sure if its related. I'm doing a regression, and everytime I see that particular warning, one or more of my predicted values ends up with a value of 'nan'. I checked my inputs and none of them are nan.If I can create a small sample that sh

Re: [Scikit-learn-general] Nearest neighbor warning when running LocallyLinearEmbedding

2012-01-23 Thread Jacob VanderPlas
I played around with this a bit: it appears to be related to a memory error. https://gist.github.com/1666570 This fails after a few iterations. If the print statement is uncommented, then it no longer fails. The ball tree code uses a lot of raw memory views for speed... I'll have a look through

Re: [Scikit-learn-general] Nearest neighbor warning when running LocallyLinearEmbedding

2012-01-23 Thread Andreas
On 01/23/2012 10:38 PM, Andreas wrote: > Hi everybody. > I created a gist to illustrate the behavior: > https://gist.github.com/1665623 > This reproduces a warning that is quite weird. > > After trying it out for some time, I found > the following fun fact: > It behaves only like it does when the m

Re: [Scikit-learn-general] Nearest neighbor warning when running LocallyLinearEmbedding

2012-01-23 Thread Andreas
Hi everybody. I created a gist to illustrate the behavior: https://gist.github.com/1665623 This reproduces a warning that is quite weird. After trying it out for some time, I found the following fun fact: It behaves only like it does when the manifold module is imported. So if you remove the manif

Re: [Scikit-learn-general] Nearest neighbor warning when running LocallyLinearEmbedding

2012-01-23 Thread Andreas
Hi. I don't know much about the modules that are involved here but this looks like a bug to me. I can reproduce the behavior you observe and am looking into it. I think Jake will be able to tell you more about this. Cheers, Andy On 01/23/2012 08:15 PM, Alejandro Weinstein wrote: > Hi: > > When

[Scikit-learn-general] Nearest neighbor warning when running LocallyLinearEmbedding

2012-01-23 Thread Alejandro Weinstein
Hi: When I run manifold.LocallyLinearEmbedding (using sklearn 0.10), as in the following code, ### from sklearn import manifold, datasets n_points = 1000 n_neighbors = 10 out_dim = 2 X, _ = datasets.samples_generator.ma