小编Mar*_*ren的帖子

训练LightGBM模型时出现以下错误：

# Train the model
import lightgbm as lgb
lgb_train = lgb.Dataset(x_train, y_train)
lgb_val = lgb.Dataset(x_test, y_test)

parameters = {
    'application': 'binary',
    'objective': 'binary',
    'metric': 'auc',
    'is_unbalance': 'true',
    'boosting': 'gbdt',
    'num_leaves': 31,
    'feature_fraction': 0.5,
    'bagging_fraction': 0.5,
    'bagging_freq': 20,
    'learning_rate': 0.05,
    'verbose': 0
}

model = lgb.train(parameters,
                       train_data,
                       valid_sets=test_data,
                       num_boost_round=5000,
                       early_stopping_rounds=100)

y_pred = model.predict(test_data)