35 lines
841 B
Python
35 lines
841 B
Python
from sklearn.model_selection import train_test_split
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from sklearn.tree import DecisionTreeClassifier, plot_tree
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import matplotlib.pyplot as plt
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import pandas as pd
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data = pd.read_csv("dane.csv")
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print(data)
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# Wczytanie danych
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X = data.drop(columns=["podlac"])
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X = pd.get_dummies(X)
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y = data["podlac"]
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# Podział danych na zbiór treningowy i testowy
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X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42)
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# Inicjalizacja i dopasowanie modelu drzewa decyzyjnego
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model = DecisionTreeClassifier()
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model.fit(X_train, y_train)
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# Wyliczenie poprawności algorytmu
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accuracy = model.score(X_test, y_test)
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print("Accuracy:", accuracy)
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# Wyświetlenie drzewa decyzyjnego
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plt.figure(figsize=(8, 5))
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plot_tree(model, feature_names=X.columns, class_names=["Nie podlać", "Podlać"], filled=True)
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plt.show()
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