Fix a few minor issues with time series unit tests and examples. (#139)

Author: pieths

src/python/nimbusml/examples/examples_from_dataframe/IidSpikeDetector_df.py

@@ -1,6 +1,5 @@
 ###############################################################################
 # IidSpikeDetector
-import numpy as np
 import pandas as pd
 from nimbusml.time_series import IidSpikeDetector
 
@@ -19,7 +18,7 @@
 # 2    5.0           0.0               5.0          5.000000e-01
 # 3    5.0           0.0               5.0          5.000000e-01
 # 4    5.0           0.0               5.0          5.000000e-01
-# 5   10.0           1.0              10.0          1.000000e-08
+# 5   10.0           1.0              10.0          1.000000e-08   <-- alert is on, predicted spike
 # 6    5.0           0.0               5.0          2.613750e-01
 # 7    5.0           0.0               5.0          2.613750e-01
 # 8    5.0           0.0               5.0          5.000000e-01

src/python/nimbusml/examples/examples_from_dataframe/SsaChangePointDetector_df.py

@@ -71,7 +71,7 @@
 # 13    3           0.0          0.084648          4.514174e-01             3.053876e-05
 # 14    4           0.0          1.305554          1.202619e-01             9.741702e-05
 # 15    0           0.0         -1.792391          7.264402e-02             5.034093e-04
-# 16  100           1.0         99.161634          1.000000e-08             4.031944e+03   <-- alert is on, predicted spike
+# 16  100           1.0         99.161634          1.000000e-08             4.031944e+03   <-- alert is on, predicted change point
 # 17  200           0.0        185.229474          5.485437e-04             7.312609e+05
 # 18  300           0.0        270.403543          1.259683e-02             3.578470e+06
 # 19  400           0.0        357.113747          2.978766e-02             4.529837e+07

src/python/nimbusml/tests/time_series/test_iidchangepointdetector.py

@@ -5,7 +5,6 @@
 
 import unittest
 
-import numpy as np
 import pandas as pd
 from nimbusml import Pipeline, FileDataStream
 from nimbusml.datasets import get_dataset

src/python/nimbusml/tests/time_series/test_iidspikedetector.py

@@ -5,7 +5,6 @@
 
 import unittest
 
-import numpy as np
 import pandas as pd
 from nimbusml import Pipeline, FileDataStream
 from nimbusml.datasets import get_dataset