{"action":"created","issue":{"url":"https://api.github.com/repos/slundberg/shap/issues/29","repository_url":"https://api.github.com/repos/slundberg/shap","labels_url":"https://api.github.com/repos/slundberg/shap/issues/29/labels{/name}","comments_url":"https://api.github.com/repos/slundberg/shap/issues/29/comments","events_url":"https://api.github.com/repos/slundberg/shap/issues/29/events","html_url":"https://github.com/slundberg/shap/issues/29","id":293546481,"number":29,"title":"Output value in binary classification task is outside [0, 1] range","user":{"login":"asstergi","id":9599766,"avatar_url":"https://avatars1.githubusercontent.com/u/9599766?v=4","gravatar_id":"","url":"https://api.github.com/users/asstergi","html_url":"https://github.com/asstergi","followers_url":"https://api.github.com/users/asstergi/followers","following_url":"https://api.github.com/users/asstergi/following{/other_user}","gists_url":"https://api.github.com/users/asstergi/gists{/gist_id}","starred_url":"https://api.github.com/users/asstergi/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/asstergi/subscriptions","organizations_url":"https://api.github.com/users/asstergi/orgs","repos_url":"https://api.github.com/users/asstergi/repos","events_url":"https://api.github.com/users/asstergi/events{/privacy}","received_events_url":"https://api.github.com/users/asstergi/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":2,"created_at":"2018-02-01T14:18:16Z","updated_at":"2018-02-05T18:40:40Z","closed_at":"2018-02-01T16:57:08Z","author_association":"NONE","body":"Hi @slundberg,\r\n\r\nI've been playing with a binary classification task using XGBoost and I noticed an unexpected (for me at least) behaviour. I replicated it using the `adult` dataset you're providing. \r\n\r\nSo, after training a binary classfication XGBoost model and plotting the SHAP values for a case, I'm getting the following:\r\n\r\n![image](https://user-images.githubusercontent.com/9599766/35682997-4304d52c-076b-11e8-9884-c53cdc1f8a9c.png)\r\n\r\nBoth the base value and the output value are outside the [0, 1] range. Is this the expected bahavior? If so, how can someone interpret this?"},"comment":{"url":"https://api.github.com/repos/slundberg/shap/issues/comments/363179487","html_url":"https://github.com/slundberg/shap/issues/29#issuecomment-363179487","issue_url":"https://api.github.com/repos/slundberg/shap/issues/29","id":363179487,"user":{"login":"slundberg","id":3740613,"avatar_url":"https://avatars0.githubusercontent.com/u/3740613?v=4","gravatar_id":"","url":"https://api.github.com/users/slundberg","html_url":"https://github.com/slundberg","followers_url":"https://api.github.com/users/slundberg/followers","following_url":"https://api.github.com/users/slundberg/following{/other_user}","gists_url":"https://api.github.com/users/slundberg/gists{/gist_id}","starred_url":"https://api.github.com/users/slundberg/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/slundberg/subscriptions","organizations_url":"https://api.github.com/users/slundberg/orgs","repos_url":"https://api.github.com/users/slundberg/repos","events_url":"https://api.github.com/users/slundberg/events{/privacy}","received_events_url":"https://api.github.com/users/slundberg/received_events","type":"User","site_admin":false},"created_at":"2018-02-05T18:40:40Z","updated_at":"2018-02-05T18:40:40Z","author_association":"OWNER","body":"Ha! Good point, done."}}
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