{"action":"created","comment":{"url":"https://api.github.com/repos/linkedin/photon-ml/pulls/comments/210085988","pull_request_review_id":146230028,"id":210085988,"node_id":"MDI0OlB1bGxSZXF1ZXN0UmV2aWV3Q29tbWVudDIxMDA4NTk4OA==","diff_hunk":"@@ -0,0 +1,47 @@\n+/*\n+ * Copyright 2018 LinkedIn Corp. All rights reserved.\n+ * Licensed under the Apache License, Version 2.0 (the \"License\"); you may\n+ * not use this file except in compliance with the License. You may obtain a\n+ * copy of the License at\n+ *\n+ * http://www.apache.org/licenses/LICENSE-2.0\n+ *\n+ * Unless required by applicable law or agreed to in writing, software\n+ * distributed under the License is distributed on an \"AS IS\" BASIS, WITHOUT\n+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the\n+ * License for the specific language governing permissions and limitations\n+ * under the License.\n+ */\n+package com.linkedin.photon.ml.hyperparameter.tuner\n+\n+import com.linkedin.photon.ml.HyperparameterTunerName.{ATLAS, DUMMY, HyperparameterTunerName}\n+\n+object HyperparameterTunerFactory {\n+\n+  val DUMMY_TUNER = \"com.linkedin.photon.ml.hyperparameter.tuner.DummyTuner\"\n+  val ATLAS_TUNER = \"com.linkedin.photon.ml.hyperparameter.tuner.AtlasTuner\"","path":"photon-api/src/main/scala/com/linkedin/photon/ml/hyperparameter/tuner/HyperparameterTunerFactory.scala","position":22,"original_position":22,"commit_id":"64fb466302df5bd2b40df3f815a545ca02a45705","original_commit_id":"64fb466302df5bd2b40df3f815a545ca02a45705","user":{"login":"joshvfleming","id":212140,"node_id":"MDQ6VXNlcjIxMjE0MA==","avatar_url":"https://avatars2.githubusercontent.com/u/212140?v=4","gravatar_id":"","url":"https://api.github.com/users/joshvfleming","html_url":"https://github.com/joshvfleming","followers_url":"https://api.github.com/users/joshvfleming/followers","following_url":"https://api.github.com/users/joshvfleming/following{/other_user}","gists_url":"https://api.github.com/users/joshvfleming/gists{/gist_id}","starred_url":"https://api.github.com/users/joshvfleming/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/joshvfleming/subscriptions","organizations_url":"https://api.github.com/users/joshvfleming/orgs","repos_url":"https://api.github.com/users/joshvfleming/repos","events_url":"https://api.github.com/users/joshvfleming/events{/privacy}","received_events_url":"https://api.github.com/users/joshvfleming/received_events","type":"User","site_admin":false},"body":"Let's put a comment here with a brief explanation of why it's arranged this way, and that the atlas-specific code will be removed.","created_at":"2018-08-14T20:06:14Z","updated_at":"2018-08-14T20:07:27Z","html_url":"https://github.com/linkedin/photon-ml/pull/386#discussion_r210085988","pull_request_url":"https://api.github.com/repos/linkedin/photon-ml/pulls/386","author_association":"CONTRIBUTOR","_links":{"self":{"href":"https://api.github.com/repos/linkedin/photon-ml/pulls/comments/210085988"},"html":{"href":"https://github.com/linkedin/photon-ml/pull/386#discussion_r210085988"},"pull_request":{"href":"https://api.github.com/repos/linkedin/photon-ml/pulls/386"}},"in_reply_to_id":210064263},"pull_request":{"url":"https://api.github.com/repos/linkedin/photon-ml/pulls/386","id":206853396,"node_id":"MDExOlB1bGxSZXF1ZXN0MjA2ODUzMzk2","html_url":"https://github.com/linkedin/photon-ml/pull/386","diff_url":"https://github.com/linkedin/photon-ml/pull/386.diff","patch_url":"https://github.com/linkedin/photon-ml/pull/386.patch","issue_url":"https://api.github.com/repos/linkedin/photon-ml/issues/386","number":386,"state":"open","locked":false,"title":"Add hyper-parameter tuner interface","user":{"login":"cmjiang","id":18601923,"node_id":"MDQ6VXNlcjE4NjAxOTIz","avatar_url":"https://avatars3.githubusercontent.com/u/18601923?v=4","gravatar_id":"","url":"https://api.github.com/users/cmjiang","html_url":"https://github.com/cmjiang","followers_url":"https://api.github.com/users/cmjiang/followers","following_url":"https://api.github.com/users/cmjiang/following{/other_user}","gists_url":"https://api.github.com/users/cmjiang/gists{/gist_id}","starred_url":"https://api.github.com/users/cmjiang/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cmjiang/subscriptions","organizations_url":"https://api.github.com/users/cmjiang/orgs","repos_url":"https://api.github.com/users/cmjiang/repos","events_url":"https://api.github.com/users/cmjiang/events{/privacy}","received_events_url":"https://api.github.com/users/cmjiang/received_events","type":"User","site_admin":false},"body":"@joshvfleming @basukinjal @yunboouyang\r\nThis PR, adding a hyper-parameter tuner, has no conflicts with PR#385. After this PR and PR#385 are both merged, let's merge PR#377 rebased on them to completely decouple the auto-tuning 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