JarCastingSpark SMILE
Deprecated repository, all features have been upstreamed to the official SMILE repository.
Repository for better integration of Spark MLLib Pipelines and SMILE library.
Setup
Download the dependency from Maven Central
SBT
libraryDependencies += "com.github.pierrenodet" %% "spark-smile" % "0.0.2"
Maven
<dependency>
<groupId>com.github.pierrenodet</groupId>
<artifactId>spark-smile_2.12</artifactId>
<version>0.0.2</version>
</dependency>
What's inside
This repository contains :
- Distributed GridSearch of SMILE trainer with Spark
- Integration of SMILE with Spark MLLib Pipelines
- Seamless interoperability between SMILE and Spark DataFrames
How to use
Distributed GridSearch
val spark = SparkSession.builder().master("local[*]").getOrCreate()
val mushrooms = read.arff("data/mushrooms.arff")
val x = mushrooms.select(1,22).toArray
val y = mushrooms("class").toIntArray
sparkgscv(spark)(5, x, y, Seq(new Accuracy()): _*) { (x, y) => knn(x, y, 3) }
From Spark DataFrame to SMILE DataFrame
import org.apache.spark.smile.implicits._
val mushrooms = spark.read.format("libsvm").load("data/mushrooms.svm")
val x = mushrooms.toSmileDF().select("features").map(t=>t.getArray[AnyRef](0).map(_.asInstanceOf[Double])).toArray
val y = mushrooms.toSmileDF().apply("label").toDoubleArray.map(_.toInt-1)
val res = classification(5, x, y, Seq(new Accuracy()): _*) { (x, y) => knn(x, y, 3) }
println(res(0))
From SMILE DataFrame to Spark DataFrame
import org.apache.spark.smile.implicits._
val spark = SparkSession.builder().master("local[*]").getOrCreate()
val mushrooms = read.arff("data/mushrooms.arff").omitNullRows().toSparkDF(spark)
mushrooms.show()
Use SMILE Classifier (or Regressor) in Spark MLLib Pipeline
val raw = spark.read.format("libsvm").load("data/mushrooms.svm")
val scl = new SmileClassifier()
.setTrainer({ (x, y) => knn(x, y, 3) })
val bce = new BinaryClassificationEvaluator()
.setLabelCol("label")
.setRawPredictionCol("rawPrediction")
val model = scl.fit(data)
println(bce.evaluate(model.transform(data)))
model.write.overwrite().save("/tmp/bonjour")
val loaded = SmileClassificationModel.load("/tmp/bonjour")
println(bce.evaluate(loaded.transform(data)))
Contributing
Feel free to open an issue or make a pull request to contribute to the repository.
Authors
- Pierre Nodet - Main developer - GitHub Profile
See also the list of contributors who participated in this project.
License
This project is licensed under the Apache License Version 2.0 - see the LICENSE file for details.