Ask HN: A daily diet analysed with PyTorch (?)

Many years ago I read a story on HN submitted (or referenced ?) by one guy who analysed his daily diet using some framework (I think it was PyTorch but I am not 100% sure). He was looking for correlation between each piece of food he ate every day and his weight. And he found it. Does anybody remember that ? If you do can you provide a URL to this ?