def __init__(<EOL>self,<EOL>sigma=<NUM_LIT>,<EOL>mu=<NUM_LIT:0.0>,<EOL>theta=<NUM_LIT>,<EOL>scope='<STR_LIT>',<EOL>summary_labels=()<EOL>):
self.sigma = sigma<EOL>self.mu = float(mu)  <EOL>self.theta = theta<EOL>super(OrnsteinUhlenbeckProcess, self).__init__(scope=scope, summary_labels=summary_labels)<EOL>
Initializes an Ornstein-Uhlenbeck process which is a mean reverting stochastic process
introducing time-correlated noise.