Olá, comecei a estudar Machile Learning há alguns meses. Com isso comecei a estudar Redes Neurais. Tentei escrever um script para dá uma olhada no comportamento do Perceptron para entender melhor, no entanto, quando comecei a escrever o código e rodei o mesmo me deparei com o seguinte erro: AttributeError: 'Perceptron' object has no attribute 'fit'

[Gustavo-Ufersa]

import numpy as np import pandas as pd import matplotlib.pyplot as plt from matplotlib.colors import ListedColormap from mlxtend.plotting import plot_decision_regions

Criação da classe perceptron:

class Perceptron: def init(self, eta=0.01, n_iter=10): self.eta = eta self.n_iter = n_iter

Métodos da classe:

def fit(self, X, y): self.w = np.zeros(1 + X.shape[1]) self.errors = []

for _ in range(self.n_iter):
    errors = 0
    for xi, target in zip(X, y):
        update = self.eta * (target - self.predict(xi))
        self.w_[1:] += update * xi
        self.w_[0] += update
        errors += int(update != 0.0)
    self.errors_.append(errors)

def predict(self, X): return np.where(self.net_input(X) >= 0.0, 1, -1) def netinput(self, X): return np.dot(X, self.w[1:] + self.w_[0])

Criando o dataset

df = pd.read_csv('https://archive.ics.uci.edu/ml/''machine-learning-databases/iris/iris.data', header=None, encoding='utf-8') df.tail() y = df.iloc[0:100, 4].values y = np.where(y == 'Iris-setosa', -1, 1) X = df.iloc[0:100, [0, 2]].values

criando o plot

plt.scatter(X[:50, 0], X[:50, 1], color ='red', marker='o', label = 'setosa') plt.scatter(X[50:100, 0], X[50:100, 1], color = 'blue', marker='o', label = 'versicolor') plt.xlabel('pental lenght ') plt.ylabel('sepal lenght ') plt.legend(loc='upper left') plt.show()

Treinamento do algoritmo

ppn = Perceptron(eta=0.1, n_iter=10) ppn.fit(X, y)

[Enya191113]

您好！      已经收到您的邮件，我会尽快处理。祝身体健康，万事胜意！

[zenetio]

Ola, O Python é sensivel a identacao, que pode ser o problema do seu codigo. Pra ter certeza, melhor vc anexar o seu arquivo python .py com o codigo. Tks

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De: Enya191113 @.> Enviado: sábado, 10 de dezembro de 2022 01:38 Para: rasbt/python-machine-learning-book-2nd-edition @.> Cc: Subscribed @.***> Assunto: Re: [rasbt/python-machine-learning-book-2nd-edition] Olá, comecei a estudar Machile Learning há alguns meses. Com isso comecei a estudar Redes Neurais. Tentei escrever um script para dá uma olhada no comportamento do Perceptron para entender melhor, no...

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[Enya191113]

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