initParams.py

def initializeFilter(size, scale = 1.0):
    '''
    Initialize filter using a normal distribution with and a 
    standard deviation inversely proportional the square root of the number of units
    '''
    stddev = scale/np.sqrt(np.prod(size))
    return np.random.normal(loc = 0, scale = stddev, size = size)

def initializeWeight(size):
    '''
    Initialize weights with a random normal distribution
    '''
    return np.random.standard_normal(size=size) * 0.01