Data-Analysis-Jupyter/sentdex_data_analysis/HPI_tpot_pipeline.py

import numpy as np

from sklearn.ensemble import VotingClassifier
from sklearn.linear_model import LogisticRegression
from sklearn.model_selection import train_test_split
from sklearn.pipeline import make_pipeline, make_union
from sklearn.preprocessing import FunctionTransformer, MaxAbsScaler, MinMaxScaler

# NOTE: Make sure that the class is labeled 'class' in the data file
tpot_data = np.recfromcsv(
    "PATH/TO/DATA/FILE", delimiter="COLUMN_SEPARATOR", dtype=np.float64
)
features = np.delete(
    tpot_data.view(np.float64).reshape(tpot_data.size, -1),
    tpot_data.dtype.names.index("class"),
    axis=1,
)
(
    training_features,
    testing_features,
    training_classes,
    testing_classes,
) = train_test_split(features, tpot_data["class"], random_state=42)

exported_pipeline = make_pipeline(
    MaxAbsScaler(), MinMaxScaler(), LogisticRegression(C=49.0, dual=True, penalty="l2")
)

exported_pipeline.fit(training_features, training_classes)
results = exported_pipeline.predict(testing_features)