我在SciKit-Learn软件包中遇到了一些奇怪的问题。
SciKit-Learn软件包中有一个名为“decomposition”的模块，应该包含LatentDirichletAllocation([…])函数。请查看此处的文档：
"https://scikit-learn.org/stable/modules/classes.html#module-sklearn.decomposition"
当我尝试导入“分解”模块时：
当我尝试导入“分解”模块时：
from sklearn import as decomposition
它会出现错误：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，但是没有"LatentDirichletAllocation"函数的痕迹。然而我在_online_lda.py文件中看到了LatentDirichletAllocation类的定义。
命令python3 -c "import sklearn; sklearn.show_versions()"打印所有所需版本：
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
所以我认为所有的要求都已经满足了。(顺便提一下，SciKit-Learn 在我尝试导入"decomposition"模块之前都工作正常).
我按照这里描述的方法安装了 SciKit-Learn 包：https://scikit-learn.org/stable/install.html，使用命令 pip3 install -U scikit-learn。我重新安装了几次，但结果都是相同的。
我做错了什么？我需要将缺失的 "LatentDirichletAllocation" 函数添加到 "decomposition" 模块中吗？如果需要，应该如何操作？我需要用不同的方式安装整个包吗？
谢谢。