Please explain how does this file work?

I am trying to replicate the results of a research paper and the author has posted her code on github. So for the algorithm there is a folder that contain multiple files with a matlab extension (*.m), however, there is this one main file with no extension at all that apparently ties it all together. Please see the github link below. My question is how should I run this file? Is there is a special toolbox that runs this code? Matlab can open the file (having no extension) and it shows a matlab code, but I can't seem to run it (no run button). I have tried adding an extension myself but that doesn't explain why it is missing an extension.

https://github.com/wangyh082/MOPSOHA/tree/master/MOPSOHA

Answer 1

[the cyclist]

Because it does look like MATLAB code, it looks like you could add a .m extension to the file, and run it normally.

I'm not sure why the author did that (and doesn't have a README, etc).