aphlysia

machine learning

• hivemall https://github.com/myui/hivemall
  • hive で machine learning
  • http://qiita.com/myui/items/f726ca3dcc48410abe45

datastores

aphlysia

e.g. hoge.rb にある関数 abs() と、クラス A のメソッド f() をテストしたいとき。

hoge.rb

# coding: utf-8

def abs(x)
  return -x if x < 0

aphlysia

histogram

import matplotlib.pyplot as plt
import numpy as np
fig, ax = plt.subplots()
ax.hist(np.random.randn(10000), 20, label = 'series 1', alpha=0.3, color='r')
ax.hist(np.random.randn(10000), 20, label = 'series 2', alpha=0.3, color='b')
legend = ax.legend(loc = 'upper left')
plt.savefig('a.png')

aphlysia

hive の正規表現

'abc' rlike 'b'

は true になる。これは java.util.regex.Matcher.find() を使っているから (rlike の実体は UDFRegExp。詳しくは FunctionRegistry.java と UDFRegExp.java を参照)。もし matches() だと全体が一致しないとマッチしない。

http://docs.oracle.com/javase/jp/7/api/java/util/regex/Matcher.html

aphlysia

modeling

• sofia-ml https://code.google.com/p/sofia-ml/
• scikit-learn
• gensim http://radimrehurek.com/gensim/
• StatsModels http://statsmodels.sourceforge.net/
• PyMC http://pymc-devs.github.io/pymc/
• emcee http://dan.iel.fm/emcee/current/
• Goodman & Weare’s Affine Invariant Markov chain Monte Carlo (MCMC) Ensemble sampler

aphlysia

// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

aphlysia

import os.path

class Path:
    def __init__(self, path = os.path.curdir):
        assert isinstance(path, str) or isinstance(path, self.__class__)
        if isinstance(path, str):
            self.path = path
        else:
            self.path = path.path

aphlysia

reduce(lambda x, y: x + y, map(lambda x: Counter(**{x: 1}), 'aba'))

aphlysia

escape ^Tt
term xterm
termcap xterm hs@
terminfo xterm hs@
defscrollback 100000
startup_message off
vbell off
bind h focus left
bind j focus down
bind k focus up

aphlysia

#!/usr/bin/env python
help = '''
python one liner

Usage: pyone [OPTIONS] code [OPTIONS] [--] [file1, file2, ...]
    -e code
    -E code
    -l
    -Mmodule[,module,...]
    -n