{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/29158724","id":29158724,"diff_hunk":"@@ -0,0 +1,71 @@\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 org.apache.spark.annotation.AlphaComponent\n+import org.apache.spark.ml.Transformer\n+import org.apache.spark.ml.attribute.BinaryAttribute\n+import org.apache.spark.ml.param._\n+import org.apache.spark.ml.param.shared._\n+import org.apache.spark.ml.util.SchemaUtils\n+import org.apache.spark.sql._\n+import org.apache.spark.sql.functions._\n+import org.apache.spark.sql.types.{DoubleType, StructType}\n+\n+/**\n+ * :: AlphaComponent ::\n+ * Binarize a column of continuous features given a threshold.\n+ */\n+@AlphaComponent\n+final class Binarizer extends Transformer\n+    with HasInputCol with HasOutputCol with HasThreshold {\n+\n+  setDefault(threshold -> 0.0)\n+\n+  /** @group setParam */\n+  def setInputCol(value: String): this.type = set(inputCol, value)\n+\n+  /** @group setParam */\n+  def setOutputCol(value: String): this.type = set(outputCol, value)\n+\n+  /** @group setParam */\n+  def setThreshold(value: Double): this.type = set(threshold, value)\n+\n+  override def transform(dataset: DataFrame, paramMap: ParamMap): DataFrame = {\n+    transformSchema(dataset.schema, paramMap, logging = true)\n+    val map = extractParamMap(paramMap)\n+    val threshold = getThreshold\n+    val binarizer = udf { in: Double => if (in > threshold) 1.0 else 0.0 }","path":"mllib/src/main/scala/org/apache/spark/ml/feature/Binarizer.scala","position":53,"original_position":53,"commit_id":"1682f8c05965ccbb34472c5d6e01166ce147f730","original_commit_id":"1682f8c05965ccbb34472c5d6e01166ce147f730","user":{"login":"viirya","id":68855,"avatar_url":"https://avatars.githubusercontent.com/u/68855?v=3","gravatar_id":"","url":"https://api.github.com/users/viirya","html_url":"https://github.com/viirya","followers_url":"https://api.github.com/users/viirya/followers","following_url":"https://api.github.com/users/viirya/following{/other_user}","gists_url":"https://api.github.com/users/viirya/gists{/gist_id}","starred_url":"https://api.github.com/users/viirya/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/viirya/subscriptions","organizations_url":"https://api.github.com/users/viirya/orgs","repos_url":"https://api.github.com/users/viirya/repos","events_url":"https://api.github.com/users/viirya/events{/privacy}","received_events_url":"https://api.github.com/users/viirya/received_events","type":"User","site_admin":false},"body":"Any definition for vector binarization?\r\n\r\nI can find the related R package [Binarize](http://cran.r-project.org/web/packages/Binarize/Binarize.pdf). In which, there are three methods used for vector binarization: BASCA, BASCB, K-means.\r\n\r\nLooks like it would be better to have a separated Transformer for vector binarization?\r\n","created_at":"2015-04-27T15:45:04Z","updated_at":"2015-04-27T15:45:04Z","html_url":"https://github.com/apache/spark/pull/5699#discussion_r29158724","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/5699","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/29158724"},"html":{"href":"https://github.com/apache/spark/pull/5699#discussion_r29158724"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/5699"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/5699","id":34103563,"html_url":"https://github.com/apache/spark/pull/5699","diff_url":"https://github.com/apache/spark/pull/5699.diff","patch_url":"https://github.com/apache/spark/pull/5699.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/5699","number":5699,"state":"open","locked":false,"title":"[SPARK-5891][ML] Add Binarizer ML Transformer","user":{"login":"viirya","id":68855,"avatar_url":"https://avatars.githubusercontent.com/u/68855?v=3","gravatar_id":"","url":"https://api.github.com/users/viirya","html_url":"https://github.com/viirya","followers_url":"https://api.github.com/users/viirya/followers","following_url":"https://api.github.com/users/viirya/following{/other_user}","gists_url":"https://api.github.com/users/viirya/gists{/gist_id}","starred_url":"https://api.github.com/users/viirya/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/viirya/subscriptions","organizations_url":"https://api.github.com/users/viirya/orgs","repos_url":"https://api.github.com/users/viirya/repos","events_url":"https://api.github.com/users/viirya/events{/privacy}","received_events_url":"https://api.github.com/users/viirya/received_events","type":"User","site_admin":false},"body":"JIRA: https://issues.apache.org/jira/browse/SPARK-5891\r\n\r\n","created_at":"2015-04-25T09:26:13Z","updated_at":"2015-04-27T15:45:04Z","closed_at":null,"merged_at":null,"merge_commit_sha":"7ebe5a1003f4227dc60193b19c717153bad1410e","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/5699/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/5699/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/5699/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/1682f8c05965ccbb34472c5d6e01166ce147f730","head":{"label":"viirya:add_binarizer","ref":"add_binarizer","sha":"1682f8c05965ccbb34472c5d6e01166ce147f730","user":{"login":"viirya","id":68855,"avatar_url":"https://avatars.githubusercontent.com/u/68855?v=3","gravatar_id":"","url":"https://api.github.com/users/viirya","html_url":"https://github.com/viirya","followers_url":"https://api.github.com/users/viirya/followers","following_url":"https://api.github.com/users/viirya/following{/other_user}","gists_url":"https://api.github.com/users/viirya/gists{/gist_id}","starred_url":"https://api.github.com/users/viirya/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/viirya/subscriptions","organizations_url":"https://api.github.com/users/viirya/orgs","repos_url":"https://api.github.com/users/viirya/repos","events_url":"https://api.github.com/users/viirya/events{/privacy}","received_events_url":"https://api.github.com/users/viirya/received_events","type":"User","site_admin":false},"repo":{"id":21467907,"name":"spark-1","full_name":"viirya/spark-1","owner":{"login":"viirya","id":68855,"avatar_url":"https://avatars.githubusercontent.com/u/68855?v=3","gravatar_id":"","url":"https://api.github.com/users/viirya","html_url":"https://github.com/viirya","followers_url":"https://api.github.com/users/viirya/followers","following_url":"https://api.github.com/users/viirya/following{/other_user}","gists_url":"https://api.github.com/users/viirya/gists{/gist_id}","starred_url":"https://api.github.com/users/viirya/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/viirya/subscriptions","organizations_url":"https://api.github.com/users/viirya/orgs","repos_url":"https://api.github.com/users/viirya/repos","events_url":"https://api.github.com/users/viirya/events{/privacy}","received_events_url":"https://api.github.com/users/viirya/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/viirya/spark-1","description":"Mirror 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