Created
August 3, 2011 21:14
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Radial Basis Function
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import scala.math.{E, pow} | |
// Vector length | |
def vecLength(implicit values: List[Double]) = pow(values.sum, .5) | |
// Radial basis function | |
def rbf(v1: List[Double], v2: List[Double], gamma:Int = 20) = { | |
val dv = { for(i <- (0 to v1.length)) yield (v1(i)-v2(i)) }.toList | |
val l = vecLength(dv) | |
pow(E, (-gamma*l)) | |
} |
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