Also listed would be years of experience, in the first iteration. In a later one, I'd want to replace that with some way of evaluating directly a person's general skill level on a scale like this: http://michaelochurch.wordpress.com/2013/04/22/gervais-macle... That would take a long time to figure out, though: how to evaluate programmers in the general case.

3 points of Machine Learning with 20+ years of experience (or 2.0 level skill) is different from 3 points from a fresh college student. The first means he's probably an expert; the second means he specialized in it while in school.

Resumes have two purposes. One is to give a list of topics one is willing to discuss in the interview. The second is to project social status (i.e. lie). So you have a mix of self-evaluations and lies on a resume. The latter don't have signal, but the former do. The reason for the 10-point allocation is that self-evaluation has a great deal of signal if a person is expected to trade off one claim against another ("i.e. I know Java but I'm really good at Python" vs. "yeah, I'm an expert in all languages").