Package elki.database.query.knn
Class WrappedKNNDBIDByLookup<O>
- java.lang.Object
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- elki.database.query.knn.WrappedKNNDBIDByLookup<O>
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- Type Parameters:
O
- relation object type
- All Implemented Interfaces:
KNNSearcher<DBIDRef>
- Direct Known Subclasses:
WrappedKNNDBIDByLookup.Linear
public class WrappedKNNDBIDByLookup<O> extends java.lang.Object implements KNNSearcher<DBIDRef>
Find nearest neighbors by querying with the original object.- Since:
- 0.8.0
- Author:
- Erich Schubert
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
WrappedKNNDBIDByLookup.Linear<O>
Linear scan searcher.
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Constructor Summary
Constructors Modifier Constructor Description private
WrappedKNNDBIDByLookup(Relation<? extends O> relation, KNNSearcher<O> inner)
Constructor.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description KNNList
getKNN(DBIDRef id, int k)
Get the k nearest neighbors for a particular object.static <O> KNNSearcher<DBIDRef>
wrap(Relation<? extends O> relation, KNNSearcher<O> inner)
Wrap a query, if notnull
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Field Detail
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inner
private KNNSearcher<O> inner
Inner kNN searcher.
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Constructor Detail
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WrappedKNNDBIDByLookup
private WrappedKNNDBIDByLookup(Relation<? extends O> relation, KNNSearcher<O> inner)
Constructor.- Parameters:
relation
- data relationinner
- inner kNN searcher
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Method Detail
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getKNN
public KNNList getKNN(DBIDRef id, int k)
Description copied from interface:KNNSearcher
Get the k nearest neighbors for a particular object.- Specified by:
getKNN
in interfaceKNNSearcher<O>
- Parameters:
id
- query objectk
- Number of neighbors requested- Returns:
- neighbors
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wrap
public static <O> KNNSearcher<DBIDRef> wrap(Relation<? extends O> relation, KNNSearcher<O> inner)
Wrap a query, if notnull
.- Type Parameters:
O
- inner data type- Parameters:
relation
- Relation to get object frominner
- inner query- Returns:
- wrapped query, or
null
if inner wasnull
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