[Scikit-learn-general] Spectral / Kmeans Clustering taking prohibitively long to run

Hi everyone, I was modifying the plot_lena_segmentation.py ( http://scikit-learn.org/stable/auto_examples/cluster/plot_lena_segmentation.html) example to use scipy.misc.face(), and the runtime is prohibitively slow. I tried to run it with the face image downsampled 8x, but that unto itself took 2 h

[Scikit-learn-general] classification metrics understanding

Hi, i think i have some "missunderstanding" due to the classification metric in scikit-learn i have a 2 class problem it is 1.0 or 2.0 precisionrecall f1-score support 1.0 0.86 0.76 0.81 254 2.0 0.49 0.65 0.56