import numpy as np
import matplotlib.pyplot as plt
from sklearn import cross_validation

# Load multivar data in the input file
def load_data(input_file):
 X = []
 with open(input_file, 'r') as f:
 for line in f.readlines():
 data = [float(x) for x in line.split(',')]
 X.append(data)

 return np.array(X)