{"action":"created","issue":{"url":"https://api.github.com/repos/glinscott/leela-chess/issues/322","repository_url":"https://api.github.com/repos/glinscott/leela-chess","labels_url":"https://api.github.com/repos/glinscott/leela-chess/issues/322/labels{/name}","comments_url":"https://api.github.com/repos/glinscott/leela-chess/issues/322/comments","events_url":"https://api.github.com/repos/glinscott/leela-chess/issues/322/events","html_url":"https://github.com/glinscott/leela-chess/pull/322","id":314390417,"number":322,"title":"Improved Eval function","user":{"login":"MTGOStark","id":38090638,"avatar_url":"https://avatars3.githubusercontent.com/u/38090638?v=4","gravatar_id":"","url":"https://api.github.com/users/MTGOStark","html_url":"https://github.com/MTGOStark","followers_url":"https://api.github.com/users/MTGOStark/followers","following_url":"https://api.github.com/users/MTGOStark/following{/other_user}","gists_url":"https://api.github.com/users/MTGOStark/gists{/gist_id}","starred_url":"https://api.github.com/users/MTGOStark/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/MTGOStark/subscriptions","organizations_url":"https://api.github.com/users/MTGOStark/orgs","repos_url":"https://api.github.com/users/MTGOStark/repos","events_url":"https://api.github.com/users/MTGOStark/events{/privacy}","received_events_url":"https://api.github.com/users/MTGOStark/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":5,"created_at":"2018-04-15T06:39:51Z","updated_at":"2018-04-18T01:41:31Z","closed_at":null,"author_association":"NONE","pull_request":{"url":"https://api.github.com/repos/glinscott/leela-chess/pulls/322","html_url":"https://github.com/glinscott/leela-chess/pull/322","diff_url":"https://github.com/glinscott/leela-chess/pull/322.diff","patch_url":"https://github.com/glinscott/leela-chess/pull/322.patch"},"body":"This is an eval curve determined and normalized by MTGOStark and syjytg, then fine-tuned by AiledlMorn to fit the tan function. Based on SF positions and conventional evaluations. It should scale well through all positions and phases of the game. A preview of the curve (and similar curves) can be found here: https://images-ext-2.discordapp.net/external/B3OEYfVT-bF4jn1su5vrIJyo5Op8HSJ1EdWxYwYiTKc/https/i.imgur.com/h0ZFkxf.png"},"comment":{"url":"https://api.github.com/repos/glinscott/leela-chess/issues/comments/382217020","html_url":"https://github.com/glinscott/leela-chess/pull/322#issuecomment-382217020","issue_url":"https://api.github.com/repos/glinscott/leela-chess/issues/322","id":382217020,"user":{"login":"dubslow","id":6127392,"avatar_url":"https://avatars0.githubusercontent.com/u/6127392?v=4","gravatar_id":"","url":"https://api.github.com/users/dubslow","html_url":"https://github.com/dubslow","followers_url":"https://api.github.com/users/dubslow/followers","following_url":"https://api.github.com/users/dubslow/following{/other_user}","gists_url":"https://api.github.com/users/dubslow/gists{/gist_id}","starred_url":"https://api.github.com/users/dubslow/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dubslow/subscriptions","organizations_url":"https://api.github.com/users/dubslow/orgs","repos_url":"https://api.github.com/users/dubslow/repos","events_url":"https://api.github.com/users/dubslow/events{/privacy}","received_events_url":"https://api.github.com/users/dubslow/received_events","type":"User","site_admin":false},"created_at":"2018-04-18T01:41:31Z","updated_at":"2018-04-18T01:41:31Z","author_association":"NONE","body":"First, I don't like changing the multiplier inside `tan` away from pi, for mostly aesthetic reasons. It's nice to say a won game is infinitely better.\r\n\r\nSecondly, I think the atanh approach is also more aesthetic, it far more closely represents what's going on inside the neurons, so it's almost like undoing the neuron stuff to get a cp evaluation. Tweak it sure, but real exponentials are more appropriate in my book than imaginary exponentials, not unlike [the original comment](https://github.com/glinscott/leela-chess/commit/91fe0bcf03989843cbc9231b530a1c6b2f4e3d42#diff-70aab7683fe64f9428b8bc47d1d183c0L246) near the conversion code."}}
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