Pretty print Global Optimizer state

Author: mandar2812

build.sbt

@@ -12,7 +12,7 @@ packageDescription := "DynaML is a scala library/repl for implementing and worki
   "which can be extended easily to implement advanced models for small and large scale applications.\n\n"+
   "But the library can also be used as an educational/research tool for data analysis."
 
-val mainVersion = "v1.4-beta.33"
+val mainVersion = "v1.4-beta.34"
 
 val dataDirectory = settingKey[File]("The directory holding the data files for running example scripts")
 

dynaml-core/src/main/scala-2.11/io/github/mandar2812/dynaml/kernels/TStudentKernel.scala

@@ -49,4 +49,18 @@ class TStudentCovFunc(private var d: Double) extends LocalSVMKernel[Double] {
 
   override def evaluate(x: Double, y: Double): Double =
     1.0/(1.0 + math.pow(math.abs(x-y), state("d")))
-}
+}
+
+class CoRegTStudentKernel(bandwidth: Double) extends LocalSVMKernel[Int] {
+
+  override val hyper_parameters: List[String] = List("d")
+
+  state = Map("d" -> bandwidth)
+
+  override def evaluate(x: Int, y: Int): Double = {
+    val diff = x - y
+    1.0/(1.0 + math.pow(math.abs(diff.toDouble), state("d")))
+  }
+
+  def getD: Double = state("d")
+}

dynaml-core/src/main/scala-2.11/io/github/mandar2812/dynaml/optimization/CoupledSimulatedAnnealing.scala

@@ -60,7 +60,7 @@ class CoupledSimulatedAnnealing[M <: GloballyOptimizable](model: M)
     CoupledSimulatedAnnealing.acceptanceProbability(variant)(energy, oldEnergy, coupling, temperature)
 
   protected val mutate = (config: Map[String, Double], temperature: Double) => {
-    logger.info("Mutating configuration: "+config)
+    logger.info("Mutating configuration: "+GlobalOptimizer.prettyPrint(config))
     config.map((param) => {
       val dist = new CauchyDistribution(0.0, temperature)
       val mutated = param._2 + dist.sample()

dynaml-core/src/main/scala-2.11/io/github/mandar2812/dynaml/optimization/GlobalOptimizer.scala

@@ -77,7 +77,7 @@ trait GlobalOptimizer[T <: GloballyOptimizable] {
 
     grid.map((config) => {
       val configMap = List.tabulate(config.length){i => (hyper_params(i), config(i))}.toMap
-      logger.info("Evaluating Configuration: "+configMap)
+      logger.info("""Evaluating Configuration: """+GlobalOptimizer.prettyPrint(configMap))
 
       val configEnergy = system.energy(configMap, options)
 
@@ -92,3 +92,10 @@ trait GlobalOptimizer[T <: GloballyOptimizable] {
                options: Map[String, String] = Map()): (T, Map[String, Double])
 
 }
+
+object GlobalOptimizer {
+
+  def prettyPrint(configuration: Map[String, Double]): String = configuration.foldLeft("""""")(
+    (str, mapping) => str+""" """+mapping._1+""" = """+mapping._2.toString)
+
+}