Scikit learn 是否删除sklearn管道中的输入维度?
我在sklearn中有以下管道:Scikit learn 是否删除sklearn管道中的输入维度?,scikit-learn,Scikit Learn,我在sklearn中有以下管道: pipe = sklearn.pipeline.Pipeline(steps=[ ('scalar', StandardScaler()), ('pca', utils.PCA(n_components=n_pca_components)), ('reduce',umap.UMAP(n_neighbors=umap_n_neighbors, min_dist=umap_min_dist, metric=umap_metric)),
pipe = sklearn.pipeline.Pipeline(steps=[
('scalar', StandardScaler()),
('pca', utils.PCA(n_components=n_pca_components)),
('reduce',umap.UMAP(n_neighbors=umap_n_neighbors, min_dist=umap_min_dist, metric=umap_metric)),
('model',utils.DBSCAN(eps=dbscan_eps,min_samples=dbscan_min_samples)),
])
是否有简单的方法消除pca和umap之间步骤中的一个维度
因此,如果我的pca输出是(0:100,0:10),并且我希望在将管道中的数据传递到umap(0:100,1:10)之前删除第一个通道,那么您可能需要在这两个阶段之间进行一个中间步骤,以实现所需的功能
您可能在这两个阶段之间有一个中间步骤来实现您想要的功能
from sklearn.preprocessing import FunctionTransformer
def custom_function(x):
# Add your code here
pipe = sklearn.pipeline.Pipeline(steps=[
('scalar', StandardScaler()),
('pca', utils.PCA(n_components=n_pca_components)),
('remove_dimension', FunctionTransformer(custom_function))
('reduce',umap.UMAP(n_neighbors=umap_n_neighbors, min_dist=umap_min_dist, metric=umap_metric)),
('model',utils.DBSCAN(eps=dbscan_eps,min_samples=dbscan_min_samples)),
])