{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/39621862","id":39621862,"diff_hunk":"@@ -0,0 +1,243 @@\n+/*\n+ * Licensed to the Apache Software Foundation (ASF) under one or more\n+ * contributor license agreements.  See the NOTICE file distributed with\n+ * this work for additional information regarding copyright ownership.\n+ * The ASF licenses this file to You under the Apache License, Version 2.0\n+ * (the \"License\"); you may not use this file except in compliance with\n+ * the License.  You may obtain a 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,\n+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n+ * See the License for the specific language governing permissions and\n+ * limitations under the License.\n+ */\n+\n+package org.apache.spark.ml.feature\n+\n+import scala.collection.mutable.{ArrayBuffer, ArrayBuilder}\n+\n+import org.apache.spark.SparkException\n+import org.apache.spark.annotation.Experimental\n+import org.apache.spark.ml.attribute._\n+import org.apache.spark.ml.param._\n+import org.apache.spark.ml.param.shared._\n+import org.apache.spark.ml.util.Identifiable\n+import org.apache.spark.ml.{Estimator, Model, Pipeline, PipelineModel, PipelineStage, Transformer}\n+import org.apache.spark.mllib.linalg.{Vector, VectorUDT, Vectors}\n+import org.apache.spark.sql.{DataFrame, Row}\n+import org.apache.spark.sql.functions._\n+import org.apache.spark.sql.types._\n+\n+/**\n+ * :: Experimental ::\n+ * Implements the transforms required for R-style feature interactions. This transformer takes in","path":"mllib/src/main/scala/org/apache/spark/ml/feature/Interaction.scala","position":36,"original_position":36,"commit_id":"92c828710cdd4ad4580dc06ea1b9ba51e2b5ed8f","original_commit_id":"92c828710cdd4ad4580dc06ea1b9ba51e2b5ed8f","user":{"login":"mengxr","id":829644,"avatar_url":"https://avatars.githubusercontent.com/u/829644?v=3","gravatar_id":"","url":"https://api.github.com/users/mengxr","html_url":"https://github.com/mengxr","followers_url":"https://api.github.com/users/mengxr/followers","following_url":"https://api.github.com/users/mengxr/following{/other_user}","gists_url":"https://api.github.com/users/mengxr/gists{/gist_id}","starred_url":"https://api.github.com/users/mengxr/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mengxr/subscriptions","organizations_url":"https://api.github.com/users/mengxr/orgs","repos_url":"https://api.github.com/users/mengxr/repos","events_url":"https://api.github.com/users/mengxr/events{/privacy}","received_events_url":"https://api.github.com/users/mengxr/received_events","type":"User","site_admin":false},"body":"remove `R-style` because this is a common feature transformation","created_at":"2015-09-16T12:17:02Z","updated_at":"2015-09-16T12:17:02Z","html_url":"https://github.com/apache/spark/pull/7987#discussion_r39621862","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/7987","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/39621862"},"html":{"href":"https://github.com/apache/spark/pull/7987#discussion_r39621862"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/7987"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/7987","id":41758352,"html_url":"https://github.com/apache/spark/pull/7987","diff_url":"https://github.com/apache/spark/pull/7987.diff","patch_url":"https://github.com/apache/spark/pull/7987.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/7987","number":7987,"state":"open","locked":false,"title":"[SPARK-9698] [ML] Add RInteraction transformer for supporting R-style feature interactions","user":{"login":"ericl","id":14922,"avatar_url":"https://avatars.githubusercontent.com/u/14922?v=3","gravatar_id":"","url":"https://api.github.com/users/ericl","html_url":"https://github.com/ericl","followers_url":"https://api.github.com/users/ericl/followers","following_url":"https://api.github.com/users/ericl/following{/other_user}","gists_url":"https://api.github.com/users/ericl/gists{/gist_id}","starred_url":"https://api.github.com/users/ericl/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ericl/subscriptions","organizations_url":"https://api.github.com/users/ericl/orgs","repos_url":"https://api.github.com/users/ericl/repos","events_url":"https://api.github.com/users/ericl/events{/privacy}","received_events_url":"https://api.github.com/users/ericl/received_events","type":"User","site_admin":false},"body":"This is a pre-req for supporting the \":\" operator in the RFormula feature transformer.\r\n\r\nDesign doc from umbrella task: https://docs.google.com/document/d/10NZNSEurN2EdWM31uFYsgayIPfCFHiuIu3pCWrUmP_c/edit\r\n\r\n@mengxr 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