没有在SciKit-Learn的分解模块中安装LatentDirichletAllocation

我在SciKit-Learn软件包中遇到了一些奇怪的问题。SciKit-Learn软件包中有一个“分解”模块，其中应包含LatentDirichletAllocation（[…]）函数。请参阅此处的文档：“ https://scikit-learn.org/stable/modules/classes.html#module-sklearn.decomposition ”

当我尝试导入“分解”模块时：from sklearn import as decomposition它给出了错误：

Traceback (most recent call last):
  File "tf_1_day_scikit_dnn.py", line 12, in <module>
    from sklearn import decomposition
  File "/home/developer1/.local/lib/python3.6/site-packages/sklearn/decomposition/__init__.py", line 19, in <module>
    from ._online_lda import LatentDirichletAllocation
ImportError: cannot import name 'LatentDirichletAllocation'

命令：ls -al ~/.local/lib/python3.6/site-packages/sklearn/decomposition显示：

drwxr-xr-x  4 developer1 developer1   4096 Dec  9 00:45 .
drwxr-xr-x 33 developer1 developer1   4096 Dec  9 00:45 ..
-rw-r--r--  1 developer1 developer1   5490 Dec  9 00:44 _base.py
-rw-r--r--  1 developer1 developer1    480 Dec  9 00:44 base.py
-rwxr-xr-x  1 developer1 developer1 179440 Dec  9 00:44 _cdnmf_fast.cpython-36m-x86_64-linux-gnu.so
-rwxr-xr-x  1 developer1 developer1 175344 Dec  3 00:09 cdnmf_fast.cpython-36m-x86_64-linux-gnu.so
-rw-r--r--  1 developer1 developer1    498 Dec  9 00:44 cdnmf_fast.py
-rw-r--r--  1 developer1 developer1  54528 Dec  9 00:44 _dict_learning.py
-rw-r--r--  1 developer1 developer1    507 Dec  9 00:44 dict_learning.py
-rw-r--r--  1 developer1 developer1  12572 Dec  9 00:44 _factor_analysis.py
-rw-r--r--  1 developer1 developer1    513 Dec  9 00:44 factor_analysis.py
-rw-r--r--  1 developer1 developer1  20866 Dec  9 00:44 _fastica.py
-rw-r--r--  1 developer1 developer1    490 Dec  9 00:44 fastica_.py
-rw-r--r--  1 developer1 developer1  14076 Dec  9 00:44 _incremental_pca.py
-rw-r--r--  1 developer1 developer1    513 Dec  9 00:44 incremental_pca.py
-rw-r--r--  1 developer1 developer1   1401 Dec  9 00:44 __init__.py
-rw-r--r--  1 developer1 developer1  13597 Dec  9 00:44 _kernel_pca.py
-rw-r--r--  1 developer1 developer1    498 Dec  9 00:44 kernel_pca.py
-rw-r--r--  1 developer1 developer1  47255 Dec  9 00:44 _nmf.py
-rw-r--r--  1 developer1 developer1    477 Dec  9 00:44 nmf.py
-rwxr-xr-x  1 developer1 developer1  62056 Dec  3 00:09 _online_lda.cpython-36m-x86_64-linux-gnu.so
-rwxr-xr-x  1 developer1 developer1  62064 Dec  9 00:44 _online_lda_fast.cpython-36m-x86_64-linux-gnu.so
-rw-r--r--  1 developer1 developer1    513 Dec  9 00:44 online_lda_fast.py
-rw-r--r--  1 developer1 developer1  30471 Dec  9 00:44 _online_lda.py
-rw-r--r--  1 developer1 developer1    498 Dec  9 00:44 online_lda.py
-rw-r--r--  1 developer1 developer1  22807 Dec  9 00:44 _pca.py
-rw-r--r--  1 developer1 developer1    477 Dec  9 00:44 pca.py
drwxr-xr-x  2 developer1 developer1   4096 Dec  9 00:45 __pycache__
-rw-r--r--  1 developer1 developer1    855 Dec  9 00:44 setup.py
-rw-r--r--  1 developer1 developer1  13654 Dec  9 00:44 _sparse_pca.py
-rw-r--r--  1 developer1 developer1    498 Dec  9 00:44 sparse_pca.py
drwxr-xr-x  3 developer1 developer1   4096 Dec  9 00:45 tests
-rw-r--r--  1 developer1 developer1   8346 Dec  9 00:44 _truncated_svd.py
-rw-r--r--  1 developer1 developer1    507 Dec  9 00:44 truncated_svd.py

大多数功能都在这里，但没有“ LatentDirichletAllocation”功能的痕迹。但是我确实在_online_lda.py文件中看到了LatentDirichletAllocation类。

命令显示python3 -c "import sklearn; sklearn.show_versions()"所有必需的版本：

System:
    python: 3.6.8 (default, Oct  7 2019, 12:59:55)  [GCC 8.3.0]
executable: /usr/bin/python3
   machine: Linux-4.15.0-65-generic-x86_64-with-Ubuntu-18.04-bionic

Python dependencies:
       pip: 9.0.1
setuptools: 42.0.2
   sklearn: 0.22
     numpy: 1.17.4
     scipy: 1.3.3
    Cython: None
    pandas: 0.25.3
matplotlib: 3.1.2
    joblib: 0.14.0

Built with OpenMP: True

因此，我认为这里满足了所有要求。（在我尝试导入“分解”模块之前，BTW SciKit-Learn正常工作）。

我安装了SciKit-Learn软件包，如此处所述：“ https://scikit-learn.org/stable/install.html ”使用命令pip3 install -U scikit-learn我确实重新安装了几次，但得到了相同的结果。

我做错了什么？我是否需要在“分解”模块中添加缺少的“ LatentDirichletAllocation”函数？如果是这样-如何？我应该以其他方式安装整个软件包吗？

谢谢。