Src Code Reading
Rolling
DDGDA
# standardize by group
feature_selected = feature_selected.groupby("datetime", group_keys=False).apply(
lambda df: (df - df.mean()).div(df.std())
)
feature_selected = feature_selected.fillna(0.0)
RollingDDGDA# standardize by group
feature_selected = feature_selected.groupby("datetime", group_keys=False).apply(
lambda df: (df - df.mean()).div(df.std())
)
feature_selected = feature_selected.fillna(0.0)