After reading your paper, I found that your work is very meaningful, but I encountered some problems when running the code.
When running command pip install ./torch_sampling ，The following error occurs：

error: command '/usr/bin/gcc' failed with exit code 1
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
error: legacy-install-failure

× Encountered error while trying to install package.
╰─> torch-sampling

We think it is because GCC version does not match, We would like to know which version of GCC you are using.