python-拟合（一元线性）

夏江江 2016-12-16 13:53

def linear_model_main(xx,yy): regr = linear_model.LinearRegression() regr.fit(xx,yy) predictions = {} predictions = regr.intercept_ #截距 predictions &nbs ...

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python-符号运算（求导等）

夏江江 2016-12-15 17:29

cmd 命令下 pip install sympy #求导 from sympy import * y = Symbol('x') diff(y**2,y) #2*x diff(f, *symbols, **kwargs) Differentiate f with respect to symbols. This is just a wrapper to unify .diff() and the Derivative class; it ...

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python 统计方法-分布检验

夏江江 2016-12-14 22:01

import scipy scipy.stats.ttest_rel() Examples for the use are scores of the same set of student in different exams, or repeated sampling from the same units. scipy.stats.kstest() This performs a test of the distribution G(x) of an observed & ...

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