为什么我会收到以下 connectionreseterror for mnist = fetch_mldata？

Question

每当我尝试从 mnist 获取数据时，我都会收到连接重置错误，不确定为什么 happening.This 是 sklearn 的教程，用于对数据进行 PCA 和 t-sne 降维。我认为这可能是 python 版本的问题，但在 2.6、3.5 或 3.7

中不起作用

from sklearn.datasets import fetch_mldata

mnist = fetch_mldata("MNIST original")
X = mnist.data / 255.0
y = mnist.target

ConnectionResetError                      Traceback (most recent call last)
<ipython-input-11-781ac9f03cc8> in <module>()
----> 1 mnist = fetch_mldata("MNIST original")
      2 X = mnist.data / 255.0
      3 y = mnist.target

/anaconda3/envs/py35/lib/python3.5/site-packages/sklearn/datasets/mldata.py in fetch_mldata(dataname, target_name, data_name, transpose_data, data_home)
    152         urlname = MLDATA_BASE_URL % quote(dataname)
    153         try:
--> 154             mldata_url = urlopen(urlname)
    155         except HTTPError as e:
    156             if e.code == 404:

ConnectionResetError: [Errno 54] Connection reset by peer

Answer 1

fetch_mldata 是 deprecated since scikit-learn v0.20, and replaced with fetch_openml；以下是您应该如何在 v0.21 中将其用于 MNIST：

from sklearn.datasets import fetch_openml
X, y = fetch_openml('mnist_784', version=1, return_X_y=True)

请参阅 example 的文档。

为什么我会收到以下 connectionreseterror for mnist = fetch_mldata？

Why am I getting the following connectionreseterror for mnist = fetch_mldata?

python

scikit-learn

mnist