[thom]

Cortona was released with an API to external apps, and that only allows simple pattern matching, so that's similar. Obviously the built-in stuff is more complex. I've no idea about today, but the original Siri was mostly just chaining relationships together by keyword matching in an ontology.

You could probably train a system like this with a word alignment approach if you generated a training corpus. But ideally you'd want to be able to show the system a new manpage and have it map arguments correctly.

Also a false positive in a SPAM filter is bad, but `rm -rf`ing because of the vagaries of the English language is worse.