Next-Generation Machine Learning with Spark by Butch Quinto
Author:Butch Quinto
Language: eng
Format: epub
ISBN: 9781484256695
Publisher: Apress
val features = Array("avg_area_income","avg_area_house_age",
"avg_area_num_rooms","avg_area_num_bedrooms","area_population")
// Combine our features into a single feature vector.
import org.apache.spark.ml.feature.VectorAssembler
val assembler = new VectorAssembler()
.setInputCols(features)
.setOutputCol("features")
val dataDF2 = assembler.transform(dataDF)
dataDF2.select("price","features").show(20,50)
+------------------+--------------------------------------------------+
| price| features|
+------------------+--------------------------------------------------+
|1059033.5578701235|[79545.45857431678,5.682861321615587,7.00918814...|
| 1505890.91484695|[79248.64245482568,6.0028998082752425,6.7308210...|
|1058987.9878760849|[61287.067178656784,5.865889840310001,8.5127274...|
|1260616.8066294468|[63345.24004622798,7.1882360945186425,5.5867286...|
| 630943.4893385402|[59982.197225708034,5.040554523106283,7.8393877...|
|1068138.0743935304|[80175.7541594853,4.9884077575337145,6.10451243...|
|1502055.8173744078|[64698.46342788773,6.025335906887153,8.14775958...|
|1573936.5644777215|[78394.33927753085,6.9897797477182815,6.6204779...|
| 798869.5328331633|[59927.66081334963,5.36212556960358,6.393120980...|
|1545154.8126419624|[81885.92718409566,4.423671789897876,8.16768800...|
| 1707045.722158058|[80527.47208292288,8.09351268063935,5.042746799...|
| 663732.3968963273|[50593.69549704281,4.496512793097035,7.46762740...|
|1042814.0978200927|[39033.809236982364,7.671755372854428,7.2500293...|
|1291331.5184858206|[73163.6634410467,6.919534825456555,5.993187900...|
|1402818.2101658515|[69391.3801843616,5.344776176735725,8.406417714...|
|1306674.6599511993|[73091.86674582321,5.443156466535474,8.51751271...|
|1556786.6001947748|[79706.96305765743,5.067889591058972,8.21977112...|
| 528485.2467305964|[61929.07701808926,4.788550241805888,5.09700955...|
|1019425.9367578316|[63508.19429942997,5.947165139552473,7.18777383...|
|1030591.4292116085|[62085.27640340488,5.739410843630574,7.09180810...|
+------------------+--------------------------------------------------+
only showing top 20 rows
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