RanksimNormalizer

java.lang.Object

es.uam.eps.ir.relison.links.recommendation.reranking.normalizer.RanksimNormalizer<I>

Type Parameters:: I - type of the items.

All Implemented Interfaces:: Normalizer<I>

public class RanksimNormalizer<I>
extends java.lang.Object
implements Normalizer<I>

Ranksim normalizer. It considers the positions in the ranking to provide normalization of the scores.

Field Summary

Fields
Modifier and Type	Field	Description
`private java.util.Comparator<org.ranksys.core.util.tuples.Tuple2od<I>>`	`comp`	Comparator for sorting the tuples in the tree set.
`private boolean`	`isSorted`	True if the map linking items with its ranking has been generated.
`private it.unimi.dsi.fastutil.objects.Object2IntMap<I>`	`map`	A mapping between item id and ranking position.
`private java.util.TreeSet<org.ranksys.core.util.tuples.Tuple2od<I>>`	`ranking`	The actual ranking.

Constructor Summary

Constructors

Constructor Description

RanksimNormalizer()
Constructor.

Method Summary

Modifier and Type	Method	Description
`void`	`add(I i, double val)`	Adds an item-value pair to the list.
`double`	`norm(I i, double value)`	Given an item-value pair, it computes the normalized value.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface es.uam.eps.ir.relison.links.recommendation.reranking.normalizer.Normalizer

add, norm

Field Details
- isSorted
  
  private boolean isSorted
  
  True if the map linking items with its ranking has been generated.
- ranking
  
  private final java.util.TreeSet<org.ranksys.core.util.tuples.Tuple2od<I>> ranking
  
  The actual ranking.
- map
  
  private final it.unimi.dsi.fastutil.objects.Object2IntMap<I> map
  
  A mapping between item id and ranking position.
- comp
  
  private java.util.Comparator<org.ranksys.core.util.tuples.Tuple2od<I>> comp
  
  Comparator for sorting the tuples in the tree set.
Constructor Details
- RanksimNormalizer
  
  public RanksimNormalizer()
  
  Constructor.
Method Details
- add
  
  public void add(I i, double val)
  
  Description copied from interface: Normalizer
  
  Adds an item-value pair to the list.
  
  Specified by:
  
  add in interface Normalizer<I>
  
  Parameters:
  
  i - the item identifier.
  
  val - the value of the item.
- norm
  
  public double norm(I i, double value)
  
  Description copied from interface: Normalizer
  
  Given an item-value pair, it computes the normalized value.
  
  Specified by:
  
  norm in interface Normalizer<I>
  
  Parameters:
  
  i - the item identifier.
  
  value - the value.
  
  Returns:
  
  the normalized value.