net.di2e.ecdr.libs.result.relevance

Class RelevanceNormalizer

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java.lang.Object

net.di2e.ecdr.libs.result.relevance.RelevanceNormalizer

public class RelevanceNormalizer
extends Object

Normalizes the Relevance of a result set by looking at the contextual criteria, then doing a local calculation of relevance based on the localized result set

Field Summary

Fields

Modifier and Type	Field and Description
static String	RELEVANCE_TIMER

Constructor Summary

Constructors

Constructor and Description
RelevanceNormalizer(ddf.catalog.filter.FilterAdapter filterAdapter)

Method Summary

Methods

Modifier and Type	Method and Description
protected boolean	canNormalizeQuery(Map<String,String> filterParameters) Checks to see if this query can be normalized.
protected Map<String,String>	getFilterParameters(ddf.catalog.operation.Query originalQuery)
protected org.apache.lucene.search.Query	getQuery(org.apache.lucene.queryparser.classic.QueryParser parser, Map<String,String> filterParameters)
protected String	getSearchPhrase(Map<String,String> filterParameters) Pull out the string-based search phrase from a query.
List<ddf.catalog.data.Result>	normalize(List<ddf.catalog.data.Result> results, ddf.catalog.operation.Query originalQuery) Normalize the relevance score for the results in the query response based on the contextual query criteria
protected ddf.catalog.data.Result	updateResult(ddf.catalog.data.Result origResult, float newScore) Creates a new result with an updated score.

Methods inherited from class java.lang.Object

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

Field Detail

RELEVANCE_TIMER

public static final String RELEVANCE_TIMER

See Also:

Constant Field Values

Constructor Detail

RelevanceNormalizer

public RelevanceNormalizer(ddf.catalog.filter.FilterAdapter filterAdapter)

Method Detail

normalize

public List<ddf.catalog.data.Result> normalize(List<ddf.catalog.data.Result> results,
                                      ddf.catalog.operation.Query originalQuery)

Normalize the relevance score for the results in the query response based on the contextual query criteria

Parameters:

results -

originalQuery -

Returns:

canNormalizeQuery

protected boolean canNormalizeQuery(Map<String,String> filterParameters)

Checks to see if this query can be normalized.

Parameters:

filterParameters - parameters from original ddf query

Returns:

true if this query can be normalzed, false if not

getQuery

protected org.apache.lucene.search.Query getQuery(org.apache.lucene.queryparser.classic.QueryParser parser,
                                      Map<String,String> filterParameters)
                                           throws org.apache.lucene.queryparser.classic.ParseException

Throws:

org.apache.lucene.queryparser.classic.ParseException

getSearchPhrase

protected String getSearchPhrase(Map<String,String> filterParameters)

Pull out the string-based search phrase from a query.

Parameters:

filterParameters - filterparameters from the original query

Returns:

Search phrase or null if no search phrase was found.

getFilterParameters

protected Map<String,String> getFilterParameters(ddf.catalog.operation.Query originalQuery)

updateResult

protected ddf.catalog.data.Result updateResult(ddf.catalog.data.Result origResult,
                                   float newScore)

Creates a new result with an updated score.

Parameters:

origResult - Original result that contains an older score.

newScore - New score to update the result with.

Returns:

Result with updated score.