class MultivariateWienerProcess(object):
    def __init__(self, drift, covariance):
        self.__drift = drift
        self.__covariance = covariance
        
    def kalmanprocnoisecov(self):
        pass
        
    def kalmanprocmap(self):
        pass
    
    def kalmanprocoffset(self):
        pass
    
    def kalmanprocnoisemap(self):
        pass
