消息推送系统

import pandas as pd

from sklearn.model_selection import train_test_split

from sklearn.feature_extraction.text import TfidfVectorizer

from sklearn.naive_bayes import MultinomialNB

# 加载数据集

data = pd.read_csv('messages.csv')

X = data['message']

y = data['category']

# 划分训练集和测试集

X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2)

# 特征提取

vectorizer = TfidfVectorizer()

身份安全认证系统

X_train_vec = vectorizer.fit_transform(X_train)

X_test_vec = vectorizer.transform(X_test)

# 训练模型

model = MultinomialNB()

model.fit(X_train_vec, y_train)

# 预测

predictions = model.predict(X_test_vec)