宁静以致墨的专栏

from scipy.cluster.vq import * #import scipy import numpy #import matplotlib.pyplot as plt from matplotlib.pyplot import * class1 = 1.5*numpy.random.randn(100,2) class2 = numpy.random.randn(100,2) +

import pickle from pysqlite2 import dbapi2 as aqlite class Indexer(object): def __init__(self,db,voc): self.con = sqlite.connect(db) self.voc = voc def __del__(self):

def plot_2D_boundary(plot_range,points,decisionfcn,labels,values=[0]): list = ['b','r','g','k','m','y'] # colors for the classes # evaluate on a grid and plot contour of decision function