decisiontree

Type Members

1. case class DecisionTree(child: IndexedSeq[Seq[(Int, Int)]], splittingAttribute: IndexedSeq[Option[Int]], categoryCounts: IndexedSeq[Seq[(Int, Int)]]) extends Product with Serializable

   

   Immutable decision tree for integer-valued features and categories.

   Immutable decision tree for integer-valued features and categories.

   Each data structure is an indexed sequence of properties. The ith element of each sequence is the property of node i of the decision tree.

   child

   stores the children of each node (as a map from attribute values to node ids)

   splittingAttribute

   stores the attribute that each node splits on; can be None for leaf nodes

   categoryCounts

   for each node, stores a map of categories to their frequency of appearance at that node (i.e. how many times a training vector with that category makes it to this node during classification)

2. case class DenseVector(label: Option[Int], attributes: IndexedSeq[Int]) extends FeatureVector with Product with Serializable

   

   Instance with arbitrary integral attributes

   Instance with arbitrary integral attributes

   label

   label of instance

   attributes

   value of each attribute

3. sealed trait FeatureVector extends AnyRef

   

   A feature vector with integral features and label.

4. case class FeatureVectors(featureVectors: IndexedSeq[FeatureVector]) extends Product with Serializable

   

   FeatureVectors is a convenience container for feature vectors.

   FeatureVectors is a convenience container for feature vectors.

   The number of attributes must be the same for all feature vectors in the container.

   featureVectors

   collection of FeatureVector objects

5. case class SparseVector(label: Option[Int], numAttributes: Int, trueAttributes: Set[Int]) extends FeatureVector with Product with Serializable

   

   Instance with sparse binary attributes

   Instance with sparse binary attributes

   label

   label of instance

   numAttributes

   number of attributes

   trueAttributes

   which attributes have value 1