public class PerFieldNormWeightingModel extends WeightingModel
Properties:
<ul>| Modifier and Type | Field and Description |
|---|---|
protected BasicModel |
basicModel |
protected int |
fieldCount |
protected double[] |
fieldGlobalFrequencies |
protected Normalisation[] |
fieldNormalisations |
protected double[] |
fieldWeights |
protected String[] |
params |
averageDocumentLength, c, cs, documentFrequency, es, i, keyFrequency, numberOfDocuments, numberOfPointers, numberOfTokens, numberOfUniqueTerms, rq, termFrequency| Constructor and Description |
|---|
PerFieldNormWeightingModel(Class<? extends BasicModel> _basicModel,
Class<? extends Normalisation> _normalisationModel)
Constructs an instance of PerFieldNormWeightingModel
|
PerFieldNormWeightingModel(String[] parameters)
Constructs an instance of PerFieldNormWeightingModel
|
| Modifier and Type | Method and Description |
|---|---|
PerFieldNormWeightingModel |
clone()
Clone this weighting model
|
String |
getInfo()
Returns the name of the model.
|
void |
prepare()
prepare
|
double |
score(double tf,
double docLength)
This method provides the contract for implementing weighting models.
|
double |
score(Posting _p)
Returns score
|
void |
setCollectionStatistics(CollectionStatistics _cs)
Sets collection statistics
|
void |
setEntryStatistics(EntryStatistics _es)
Sets entry statistics.
|
getOverflowed, getParameter, setKeyFrequency, setParameter, setRequestprotected String[] params
protected BasicModel basicModel
protected Normalisation[] fieldNormalisations
protected double[] fieldGlobalFrequencies
protected double[] fieldWeights
protected int fieldCount
public PerFieldNormWeightingModel(Class<? extends BasicModel> _basicModel, Class<? extends Normalisation> _normalisationModel) throws Exception
_basicModel - _normalisationModel - Exceptionpublic PerFieldNormWeightingModel clone()
WeightingModelclone in class WeightingModelpublic void prepare()
WeightingModelprepare in class WeightingModelpublic double score(Posting _p)
WeightingModelscore in class WeightingModelpublic void setCollectionStatistics(CollectionStatistics _cs)
WeightingModelsetCollectionStatistics in class WeightingModelpublic void setEntryStatistics(EntryStatistics _es)
setEntryStatistics in class WeightingModelpublic String getInfo()
getInfo in interface ModelgetInfo in class WeightingModelpublic double score(double tf,
double docLength)
WeightingModelscore in class WeightingModeltf - The term frequency in the documentdocLength - the document's lengthTerrier Information Retrieval Platform4.1. Copyright © 2004-2015, University of Glasgow