taxi_sim_delay.py 文件源码

def compute_duration(previous_action):
    """Compute action duration using exponential distribution"""
    if previous_action in ['leave garage', 'drop off passenger']:
        # new state is prowling
        interval = SEARCH_DURATION
    elif previous_action == 'pick up passenger':
        # new state is trip
        interval = TRIP_DURATION
    elif previous_action == 'going home':
        interval = 1
    else:
        raise ValueError('Unknown previous_action: %s' % previous_action)
    return int(random.expovariate(1/interval)) + 1