Class GBDTForestNode
- java.lang.Object
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- com.yahoo.searchlib.rankingexpression.rule.ExpressionNode
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- com.yahoo.searchlib.rankingexpression.evaluation.gbdtoptimization.GBDTForestNode
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- All Implemented Interfaces:
Serializable
public class GBDTForestNode extends ExpressionNode
An optimized version of a sum of consecutive decision trees.- Author:
- bratseth
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description GBDTForestNode(double[] values)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Value
evaluate(Context context)
Returns the value of evaluating this expression over the given context.int
hashCode()
Returns a hashcode computed from the data in thisStringBuilder
toString(StringBuilder string, SerializationContext context, Deque<String> path, CompositeNode parent)
Returns (optimized sum of condition trees)com.yahoo.tensor.TensorType
type(com.yahoo.tensor.evaluation.TypeContext<Reference> context)
Returns the type this will return if evaluated with the given context.-
Methods inherited from class com.yahoo.searchlib.rankingexpression.rule.ExpressionNode
equals, toString, toString
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Method Detail
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type
public final com.yahoo.tensor.TensorType type(com.yahoo.tensor.evaluation.TypeContext<Reference> context)
Description copied from class:ExpressionNode
Returns the type this will return if evaluated with the given context.- Specified by:
type
in classExpressionNode
- Parameters:
context
- the variable type bindings to use for this evaluation
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evaluate
public final Value evaluate(Context context)
Description copied from class:ExpressionNode
Returns the value of evaluating this expression over the given context.- Specified by:
evaluate
in classExpressionNode
- Parameters:
context
- the variable bindings to use for this evaluation
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toString
public StringBuilder toString(StringBuilder string, SerializationContext context, Deque<String> path, CompositeNode parent)
Returns (optimized sum of condition trees)- Specified by:
toString
in classExpressionNode
- Parameters:
string
- the StringBuilder that will be appended tocontext
- the serialization contextpath
- the call path to this, used for cycle detection, or null if this is a rootparent
- the parent node of this, or null if it is a root- Returns:
- the main script, referring to script instances.
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hashCode
public int hashCode()
Description copied from class:ExpressionNode
Returns a hashcode computed from the data in this- Specified by:
hashCode
in classExpressionNode
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