fastText test_label在文本分类中显示所有标签的召回为nan

如何解决fastText test_label在文本分类中显示所有标签的召回为nan

在使用fastText训练监督模型之后，我尝试通过以下方法获取每个标签的指标：

model.test_label('testdata.txt')

但是，对于每个标签的召回，我都很满意。输出的一个示例是

'__label__Facility': {'precision': 0.7272727272727273,'recall': nan,'f1score': 1.4545454545454546},'f1score': 1.1415356151711378},'__label__ThirdParty': {'precision': 0.8731285988483686,'f1score': 1.7462571976967372},'__label__Orders': {'precision': 0.6527777777777778,'f1score': 1.3055555555555556}

这里提到了相同的问题： FastText recall is 'nan' but precision is a number

我尝试了该问题中提到的修复程序，并在Anaconda Prompt中运行了以下命令：

pip install git+https://github.com/facebookresearch/fastText.git@b64e359d5485dda4b4b5074494155d18e25c8d13

我在jupyter笔记本中重新运行了代码，但是仍然遇到相同的问题。我尝试关闭内核并启动一个新内核，以查看它是否会有所作为，但问题仍然存在。

似乎安装成功，所以我不确定是什么问题。如果有帮助，这是Anaconda提示符的输出：

(py38) C:\>pip install git+https://github.com/facebookresearch/fastText.git@b64e359d5485dda4b4b5074494155d18e25c8d13
Collecting git+https://github.com/facebookresearch/fastText.git@b64e359d5485dda4b4b5074494155d18e25c8d13
  cloning https://github.com/facebookresearch/fastText.git (to revision b64e359d5485dda4b4b5074494155d18e25c8d13) to c:\users\ebf\appdata\local\temp\pip-req-build-iy1g1acw
Requirement already satisfied (use --upgrade to upgrade): fasttext==0.9.2 from git+https://github.com/facebookresearch/fastText.git@b64e359d5485dda4b4b5074494155d18e25c8d13 in c:\users\ebf\appdata\local\continuum\anaconda3\envs\py38\lib\site-packages
Requirement already satisfied: pybind11>=2.2 in c:\users\ebf\appdata\local\continuum\anaconda3\envs\py38\lib\site-packages (from fasttext==0.9.2) (2.5.0)
Requirement already satisfied: setuptools>=0.7.0 in c:\users\ebf\appdata\local\continuum\anaconda3\envs\py38\lib\site-packages (from fasttext==0.9.2) (49.6.0.post20200814)
Requirement already satisfied: numpy in c:\users\ebf\appdata\local\continuum\anaconda3\envs\py38\lib\site-packages (from fasttext==0.9.2) (1.19.1)
Building wheels for collected packages: fasttext
  Building wheel for fasttext (setup.py) ... done
  Created wheel for fasttext: filename=fasttext-0.9.2-cp38-cp38-win_amd64.whl size=225331 sha256=a76754f5819d96f33256a934c19e6676af79f53bfcfb088d3f555b6736e961bf
  Stored in directory: c:\users\ebf\appdata\local\pip\cache\wheels\5e\e2\b4\d7d10e1cef8c0b9afc1669ed987ee5e970d800079ec14d2cbf
Successfully built fasttext

有什么建议吗？

解决方法

同样的事情。只是 pip uninstall fasttext 先帮了忙。