DataConversionWarning: A column-vector y was passed when a 1d array was expected. Please change 数据转换警告:当需要一维数组时,传递了列向量y。请将Y的形状更改为(n_samples,),例如使用ravel()。 y = column_or_1d(y, warn=True) 解决方法 该问题是警告信息,不处理亦可运行程序,只需理解一下即可!建...
DataConversionWarning: A column-vector y was passed when a 1d array was expected. Please change the shape of y to (n_samples, ), for example using ravel(). return f(**kwargs) 原因是,在训练时的y_train的格式不对。 用ravel转换下数据格式即可运行。 y_train = y_train.values.ravel() 或...
DataConversionWarning: A column-vector y was passed when a 1d array was expected. 问题解决? 数据转换警告:当需要一维数组时,传递了列向量y。请将Y的形状更改为(n_samples,),例如使用ravel()。 y = column_or_1d(y, warn=True) model= forest.fit(train_fold, train_y) model= forest.fit(train_f...
sklearn\utils\validation.py:578: DataConversionWarning: A column-vector y was passed when a 1d array was expected. Please change the shape of y to (n_samples, ), for example using ravel(). y = column_or_1d(y, warn=True) 解决思路 数据转换警告:当需要一维数组时,传递了列向量y。请将Y...
ValueError: y should be a 1d array, got an array of shape (1, 250) instead。 查看变量列表如下图 可以看到train_set_y的shape是(1,250),而这里期望的shape是(250,)。 所以解决办法: 二维转一维即可,我习惯用reshape(-1),当然还有flatten()、ravel()、squeeze()函数都能实现。
简介: 成功解决DataConversionWarning: A column-vector y was passed when a 1d array was expected. Please change 解决问题 sklearn\utils\validation.py:578: DataConversionWarning: A column-vector y was passed when a 1d array was expected. Please change the shape of y to (n_samples, ), for ...
当你在使用机器学习或数据分析的过程中,碰到了类似于ValueError: y should be a 1d array, got an array of shape (110000, 3) instead.这样的错误信息时,一般是由于目标变量y的格式不正确引起的。在这篇文章中,我们将介绍这个错误的原因,并提供解决方法。
/Users/wangchuang/anaconda3/lib/python3.6/site-packages/sklearn/utils/validation.py:547: DataConversionWarning: A column-vector y was passed when a 1d array was expected. Please change the shape of y to (n_samples, ),forexampleusingravel(). ...
A column-vector y was passed when a 1d array was expected 使用网格搜索时报错A column-vector y was passed when a 1d array was expected 1 把optimizer = GridSearchCV(estimator=model, param_grid=grid_params,scoring='accuracy', cv=5, verbose=1, n_jobs=4) bst = optimizer.fit(feature_...
output(1) /home/jupyterlab/conda/envs/python/lib/python3.6/site-packages/sklearn/utils/validation.py:761: DataConversionWarning: A column-vector y was passed when a 1d array was expected. Please change the shape of y to (n_samples, ), for example using ravel(). ...