A controlled ablation traced most of PPO's edge to the code around its clip
The clipped objective that defines PPO is still the field's default, but a 2020 ablation holding the implementation fixed located most of its reward margin over TRPO in nine unglamorous training tricks.
Does “subject to the jurisdiction thereof” let the government deny birthright citizenship?
A divided Supreme Court struck down the president’s first order in June, and two narrower orders signed on August 6 have revived the fight over the same five words.
A baby's own flu shot comes due just as the mother's protection fades
The nasal spray with the strongest efficacy is licensed from age two, and the shot a six-month-old can get was measured mostly in older children.
Trump narrows the childhood vaccine schedule to 11 diseases
Trump justified the change with a debunked autism link he raised only in his signing remarks, and the country's pediatricians have rejected it.
An unreleased Claude raised a proven Riemann-zeta bound to 67.2 percent
The day's other headline AI numbers, OpenAI's cyber benchmark and Meta's open-weight comparisons, were self-reports from the labs that produced them.
The jolt in ‘galvanize’ used to be literal
A quarrel over why a dead frog's leg twitched ran from Galvani's bench to a hanged man's corpse at Newgate, and it left English a verb for the shock that rouses a crowd.