uci.py 文件源码

def _load_powerplant():
    """
    attribute information:

    features consist of hourly average ambient variables 
    - temperature (t) in the range 1.81 c and 37.11 c,
    - ambient pressure (ap) in the range 992.89-1033.30 millibar,
    - relative humidity (rh) in the range 25.56% to 100.16%
    - exhaust vacuum (v) in teh range 25.36-81.56 cm hg
    - net hourly electrical energy output (ep) 420.26-495.76 mw
    the averages are taken from various sensors located around the
    plant that record the ambient variables every second.
    the variables are given without normalization.
    """
    data_file = os.path.join(data_dir, 'power-plant/Folds5x2_pp.xlsx')
    data = pd.read_excel(data_file)
    x    = data.values[:, :-1]
    y    = data.values[:,  -1]
    return x, y