我是 python 和机器学习的新手。我有一个线性回归模型,它能够根据我转储用于 Web 服务的输入来预测输出。请参阅下面的代码:
X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.25)
regression_model = LinearRegression()
regression_model.fit(X_train, y_train)
print(regression_model.predict(np.array([[21, 0, 0, 0, 1, 0, 0, 1, 1, 1]]))) # this is returning my expected output
joblib.dump(regression_model, '../trainedModels/MyTrainedModel.pkl')
使用 Flask 我尝试将其公开为 Web 服务,如下所示:
@app.route('/predict', methods=['POST'])
def predict():
X = [[21, 0, 0, 0, 1, 0, 0, 1, 1, 1]]
model = joblib.load('../trainedModels/MyTrainedModel.pkl')
prediction = model.predict(np.array(X).tolist())
return jsonify({'prediction': list(prediction)})
但它抛出以下异常
Object of type 'ndarray' is not JSON serializable
I tried NumPy 数组不可 JSON 序列化 https://stackoverflow.com/questions/26646362/numpy-array-is-not-json-serializable
但仍然是同样的错误。我该如何解决这个问题