| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.sysml.api.ml |
| |
| import org.apache.spark.rdd.RDD |
| import java.io.File |
| import org.apache.spark.SparkContext |
| import org.apache.spark.ml.{ Model, Estimator } |
| import org.apache.spark.sql.DataFrame |
| import org.apache.spark.sql.types.StructType |
| import org.apache.spark.ml.param.{ Params, Param, ParamMap, DoubleParam } |
| import org.apache.sysml.runtime.matrix.MatrixCharacteristics |
| import org.apache.sysml.runtime.matrix.data.MatrixBlock |
| import org.apache.sysml.runtime.DMLRuntimeException |
| import org.apache.sysml.runtime.instructions.spark.utils.{ RDDConverterUtilsExt => RDDConverterUtils } |
| import org.apache.sysml.api.mlcontext._ |
| import org.apache.sysml.api.mlcontext.ScriptFactory._ |
| |
| object LogisticRegression { |
| final val scriptPath = "scripts" + File.separator + "algorithms" + File.separator + "MultiLogReg.dml" |
| } |
| |
| /** |
| * Logistic Regression Scala API |
| */ |
| class LogisticRegression(override val uid: String, val sc: SparkContext) extends Estimator[LogisticRegressionModel] with HasIcpt |
| with HasRegParam with HasTol with HasMaxOuterIter with HasMaxInnerIter with BaseSystemMLClassifier { |
| |
| def setIcpt(value: Int) = set(icpt, value) |
| def setMaxOuterIter(value: Int) = set(maxOuterIter, value) |
| def setMaxInnerIter(value: Int) = set(maxInnerIter, value) |
| def setRegParam(value: Double) = set(regParam, value) |
| def setTol(value: Double) = set(tol, value) |
| |
| override def copy(extra: ParamMap): LogisticRegression = { |
| val that = new LogisticRegression(uid, sc) |
| copyValues(that, extra) |
| } |
| |
| // Note: will update the y_mb as this will be called by Python mllearn |
| def fit(X_mb: MatrixBlock, y_mb: MatrixBlock): LogisticRegressionModel = { |
| val ret = fit(X_mb, y_mb, sc) |
| new LogisticRegressionModel("log")(ret._1, ret._2, sc) |
| } |
| |
| def fit(df: ScriptsUtils.SparkDataType): LogisticRegressionModel = { |
| val ret = fit(df, sc) |
| new LogisticRegressionModel("log")(ret._1, ret._2, sc) |
| } |
| |
| |
| def getTrainingScript(isSingleNode:Boolean):(Script, String, String) = { |
| val script = dml(ScriptsUtils.getDMLScript(LogisticRegression.scriptPath)) |
| .in("$X", " ") |
| .in("$Y", " ") |
| .in("$B", " ") |
| .in("$icpt", toDouble(getIcpt)) |
| .in("$reg", toDouble(getRegParam)) |
| .in("$tol", toDouble(getTol)) |
| .in("$moi", toDouble(getMaxOuterIte)) |
| .in("$mii", toDouble(getMaxInnerIter)) |
| .out("B_out") |
| (script, "X", "Y_vec") |
| } |
| } |
| object LogisticRegressionModel { |
| final val scriptPath = "scripts" + File.separator + "algorithms" + File.separator + "GLM-predict.dml" |
| } |
| |
| /** |
| * Logistic Regression Scala API |
| */ |
| |
| class LogisticRegressionModel(override val uid: String)( |
| val mloutput: MLResults, val labelMapping: java.util.HashMap[Int, String], val sc: SparkContext) |
| extends Model[LogisticRegressionModel] with HasIcpt |
| with HasRegParam with HasTol with HasMaxOuterIter with HasMaxInnerIter with BaseSystemMLClassifierModel { |
| override def copy(extra: ParamMap): LogisticRegressionModel = { |
| val that = new LogisticRegressionModel(uid)(mloutput, labelMapping, sc) |
| copyValues(that, extra) |
| } |
| var outputRawPredictions = true |
| def setOutputRawPredictions(outRawPred:Boolean): Unit = { outputRawPredictions = outRawPred } |
| |
| def getPredictionScript(mloutput: MLResults, isSingleNode:Boolean): (Script, String) = |
| PredictionUtils.getGLMPredictionScript(mloutput.getBinaryBlockMatrix("B_out"), isSingleNode, 3) |
| |
| def transform(X: MatrixBlock): MatrixBlock = transform(X, mloutput, labelMapping, sc, "means") |
| def transform(df: ScriptsUtils.SparkDataType): DataFrame = transform(df, mloutput, labelMapping, sc, "means") |
| } |
| |
| /** |
| * Example code for Logistic Regression |
| */ |
| object LogisticRegressionExample { |
| import org.apache.spark.{ SparkConf, SparkContext } |
| import org.apache.spark.sql.types._ |
| import org.apache.spark.mllib.linalg.Vectors |
| import org.apache.spark.mllib.regression.LabeledPoint |
| |
| def main(args: Array[String]) = { |
| val sparkConf: SparkConf = new SparkConf(); |
| val sc: SparkContext = new SparkContext("local", "TestLocal", sparkConf); |
| val sqlContext = new org.apache.spark.sql.SQLContext(sc); |
| |
| import sqlContext.implicits._ |
| val training = sc.parallelize(Seq( |
| LabeledPoint(1.0, Vectors.dense(1.0, 0.0, 3.0)), |
| LabeledPoint(1.0, Vectors.dense(1.0, 0.4, 2.1)), |
| LabeledPoint(2.0, Vectors.dense(1.2, 0.0, 3.5)), |
| LabeledPoint(1.0, Vectors.dense(1.0, 0.5, 2.2)), |
| LabeledPoint(2.0, Vectors.dense(1.6, 0.8, 3.6)), |
| LabeledPoint(1.0, Vectors.dense(1.0, 0.0, 2.3)))) |
| val lr = new LogisticRegression("log", sc) |
| val lrmodel = lr.fit(training.toDF) |
| // lrmodel.mloutput.getDF(sqlContext, "B_out").show() |
| |
| val testing = sc.parallelize(Seq( |
| LabeledPoint(1.0, Vectors.dense(1.0, 0.0, 3.0)), |
| LabeledPoint(1.0, Vectors.dense(1.0, 0.4, 2.1)), |
| LabeledPoint(2.0, Vectors.dense(1.2, 0.0, 3.5)), |
| LabeledPoint(1.0, Vectors.dense(1.0, 0.5, 2.2)), |
| LabeledPoint(2.0, Vectors.dense(1.6, 0.8, 3.6)), |
| LabeledPoint(1.0, Vectors.dense(1.0, 0.0, 2.3)))) |
| |
| lrmodel.transform(testing.toDF).show |
| } |
| } |