wjqhit的专栏

XGBoost Parameters

Objective is to demonstrate: regression ✓ binary classification ✓ multiclass classification ✓ cross-validation ✓ hyperparameter searching ✓ feature importance ✓ early stopping ✓ evaluations p...

import numpy as np from pandas import DataFrame import pandas as pd df=DataFrame(np.arange(12).reshape((3,4)),index=['one','two','thr'],columns=list('abcd')) df['a']#取a列 df[['a','b']]#取a、b列 #ix可以用...

原生形式使用lightgbm(import lightgbm as lgb) import lightgbm as lgb from sklearn.metrics import mean_squared_error from sklearn.datasets import load_iris from sklearn.model_selection import train_test_spli...