andrewmusselman commented on code in PR #423:
URL: https://github.com/apache/mahout/pull/423#discussion_r1100492640
##########
core/src/main/scala/org/apache/mahout/math/algorithms/preprocessing/AsFactor.scala:
##########
@@ -29,8 +29,18 @@ import org.apache.mahout.math.scalabindings._
import org.apache.mahout.math.scalabindings.RLikeOps._
import MahoutCollections._
+/**
+ * AsFactor is a preprocessor that turns a vector of integers into a vector
of one-hot encoded
Review Comment:
I'd change this to "matrix" instead of "vector of integers"
##########
core/src/main/scala/org/apache/mahout/math/algorithms/preprocessing/AsFactor.scala:
##########
@@ -92,6 +115,12 @@ class AsFactorModel(cardinality: Int, factorVec:
MahoutVector) extends Preproces
res
}
+ /**
+ * Inverse transform the input data - ie transform a one-hot encoded
DrmLike[K] into a
Review Comment:
I don't know what this method does but that comment doesn't look complete..
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