[segfaultbuserr]

I think the problem is that the title is not a good indicator for current-event related submissions. "More Intel speculative execution vulnerabilities" may be a bad blogpost, but it's an important current event, so it still gets to the top regardless of the title selection.

Categorizing submissions to different types, and repeat the experiment, you'll find the program may predict blog/article and "Show HN" submissions with higher accuracy.