r - 使用 xgboost 函数时出现 XGBoost 错误

Question

这是我的代码:

xgb <- xgboost(data = as.matrix(df_all_combined), 
               label = as.matrix(target_train), 
               eta = 0.1,
               max_depth = 15, 
               nround=100, 
               subsample = 0.5,
               colsample_bytree = 0.5,
               seed = 1,
               eval_metric = "auc",
               objective = "binary:logistic",
               num_class = 12,
               nthread = 3)

得到以下错误:

Error in xgb.iter.update(bst$handle, dtrain, iteration - 1, obj) : [09:17:34] amalgamation/../src/objective/regression_obj.cc:90: Check failed: (preds.size()) == (info.labels.size()) labels are not correctly providedpreds.size=840756, label.size=70063

谁能帮我解决这个问题？无法弄清楚问题。

Answer 1

尝试从您的参数中删除 num_class = 12 。