管道的最后一步应实现fit或为字符串“passthrough”
管道的最后一步应实现fit或为字符串“passthrough”
提问于 2021-08-01 03:46:29
我正在尝试构建简单的管道：
from sklearn.linear_model import Lasso
from sklearn.preprocessing import PolynomialFeatures
from sklearn.pipeline import make_pipeline
make_pipeline([
('PolynomialFeatures', PolynomialFeatures(include_bias=False)),
('Lasso', Lasso(fit_intercept=True, max_iter=1000))])我得到了一个错误：
TypeError: Last step of Pipeline should implement fit or be the string 'passthrough'. '[('PolynomialFeatures', PolynomialFeatures(include_bias=False)), ('Lasso', Lasso())]' (type <class 'list'>) doesn't出什么问题了？我怎么才能修复它？
Stack Overflow用户
回答已采纳
发布于 2021-08-01 06:21:36
您应该使用pipeline而不是make_pipeline，因为您提供了带有名称的步骤(在此here上有更多信息！)。
from sklearn.linear_model import Lasso
from sklearn.preprocessing import PolynomialFeatures
from sklearn.pipeline import make_pipeline, Pipeline
Pipeline([
('PolynomialFeatures', PolynomialFeatures(include_bias=False)),
('Lasso', Lasso(fit_intercept=True, max_iter=1000))])输出：
Pipeline(steps=[('PolynomialFeatures', PolynomialFeatures(include_bias=False)),
('Lasso', Lasso())])页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/68607375
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