{"head":"1863b35bf160861a5d105ef786256f6bb181311e","size":1,"push_id":45516842,"shas":[["1863b35bf160861a5d105ef786256f6bb181311e","0438cc317353a812ba6c584cdd6d4a7c97e6bfd2@gmail.com","gradient descent started","jGc"]],"ref":"refs/heads/master"}