| private val a = 0.147 // constant for calculating erf/erfi | |
| /** | |
| * An approximation to the error function | |
| */ | |
| def erf(x: Double) = { | |
| val x2 = x*x | |
| val inner = exp(-1*x2*(4/pi + a*x2) / | |
| (1.0 + a*x2)) | |
| signum(x)*sqrt(1.0 - inner) | |
| } |
| ''' | |
| A module that allows one to press CTRL+\ at any time to pause program execution. | |
| The stack may be examined with `u` and `d`, and the process can be continued with | |
| `c`. For example, | |
| import instant_debug | |
| import time | |
| for i in xrange(10000): | |
| print i |
| from pprint import pprint | |
| from sklearn.datasets import load_digits | |
| from sklearn.neighbors import KNeighborsClassifier | |
| from sklearn.cross_validation import KFold | |
| # load data | |
| digits = load_digits() | |
| X = digits.data.astype('uint8') | |
| Y = digits.target |
| Startup | |
| ======= | |
| run pig locally: | |
| $ magicpig -x local script.pig # doesn't work | |
| expand pig macros: | |
| $ magicpig -dryrun script.pig | |
| Commands | |
| ======== |
| import numpy as np | |
| from scipy.stats import norm | |
| import pylab as pl | |
| def rbf(x, C, w): | |
| y = [norm.pdf(np.linalg.norm(x - C[i]) ** 2.0, 0, 1) for i in range(C.shape[0])] | |
| y = np.exp(y) / np.sum(np.exp(y)) | |
| return w.dot(y) |
| ''' | |
| Cross validation selectors | |
| @author: duckworthd | |
| ''' | |
| import numpy as np | |
| class SequentialFolds(object): | |
| ''' |
Sadly, I found that the screen that comes with OS X does not support 256 colors. Starting with this article GNU/Screen with 256 colours in Mac OS X, I built GNU Screen as follows.
git clone git clone git://git.savannah.gnu.org/screen.git
cd screen/src
mkdir -p /opt/etc
mv etc/etcscreenrc /opt/etc/screenrc
./autogen.sh
| <html> | |
| <head> | |
| <!-- CSS goes here --> | |
| <link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css" rel="stylesheet"> | |
| </head> | |
| <body> | |
| <!-- page content goes here --> | |
| <h1>Hello, World</h1> | |