{"action":"opened","issue":{"url":"https://api.github.com/repos/ApolloAuto/apollo/issues/4206","repository_url":"https://api.github.com/repos/ApolloAuto/apollo","labels_url":"https://api.github.com/repos/ApolloAuto/apollo/issues/4206/labels{/name}","comments_url":"https://api.github.com/repos/ApolloAuto/apollo/issues/4206/comments","events_url":"https://api.github.com/repos/ApolloAuto/apollo/issues/4206/events","html_url":"https://github.com/ApolloAuto/apollo/issues/4206","id":324447801,"number":4206,"title":"Question: Spline2dKernel::kernel_matrix() returns a scaled kernel matrix","user":{"login":"jilinzhou","id":6865725,"avatar_url":"https://avatars3.githubusercontent.com/u/6865725?v=4","gravatar_id":"","url":"https://api.github.com/users/jilinzhou","html_url":"https://github.com/jilinzhou","followers_url":"https://api.github.com/users/jilinzhou/followers","following_url":"https://api.github.com/users/jilinzhou/following{/other_user}","gists_url":"https://api.github.com/users/jilinzhou/gists{/gist_id}","starred_url":"https://api.github.com/users/jilinzhou/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jilinzhou/subscriptions","organizations_url":"https://api.github.com/users/jilinzhou/orgs","repos_url":"https://api.github.com/users/jilinzhou/repos","events_url":"https://api.github.com/users/jilinzhou/events{/privacy}","received_events_url":"https://api.github.com/users/jilinzhou/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-05-18T15:07:08Z","updated_at":"2018-05-18T15:07:08Z","closed_at":null,"author_association":"CONTRIBUTOR","body":"Any reason to return a scaled kernel matrix?\r\n\r\n```\r\nEigen::MatrixXd* Spline2dKernel::mutable_kernel_matrix() {\r\n  return &kernel_matrix_;\r\n}\r\n\r\n...\r\n\r\nconst Eigen::MatrixXd Spline2dKernel::kernel_matrix() const {\r\n  return kernel_matrix_ * 2.0;\r\n}\r\n```"}}
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