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Search criteria: relevancy computation.
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QualityStats (Lucene 4.2.1 API) - Lucene - [web site]
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...Stats.RecallPoint
A certain rank in which a relevant doc was found.
Field Summary
static int MAX_POINTS
Number of points for which precision is computed.
Constructor Summary...
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QualityStats(double maxGoodPoints,
long searchTime)
Construct a QualityStats object with anticipated maximal number of relevant hits.
Method Summary
void add...
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boolean isRelevant,
long docNameExtractTime)
Add a (possibly relevant) doc.
static QualityStats average(QualityStats[] stats)
Create a QualityStats object... |
| ... the Mean reciprocal rank over the queries or RR for a single query.
double getNumGoodPoints()
Returns the number of good points (only relevant points).
double get... |
| ...NumPoints()
Returns the number of points (both relevant and irrelevant points).
double getPrecisionAt(int n)
Return the precision at rank n:
|{relevant hits within first n hits}| / n... |
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http://lucene.apache.org/java/4_2_1/benchmark/org/apache/l.../QualityStats.html
2013-04-04, 00:43
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Uses of Class org.apache.lucene.search.grouping.GroupingSearch (Lucene 4.3.0 API) - Lucene - [web site]
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...Search GroupingSearch.disableCaching()
Disables any enabled cache.
GroupingSearch GroupingSearch.setAllGroupHeads(boolean allGroupHeads)
Whether to compute all group heads (most relevant document per...
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... group) matching the query.
GroupingSearch GroupingSearch.setAllGroups(boolean allGroups)
Whether to also compute all groups matching the query.
GroupingSearch Grouping...
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[- hide]
| ...Search.setIncludeMaxScore(boolean includeMaxScore)
Whether to include the score of the most relevant document per group.
GroupingSearch GroupingSearch.setIncludeScores(boolean includeScores)
Whether to include the scores per doc inside a group... |
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http://lucene.apache.org/java/4_3_0/grouping/org/apache/.../GroupingSearch.html
2013-05-06, 08:52
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Uses of Class org.apache.lucene.search.Sort (Lucene 4.2.1 API) - Lucene - [web site]
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...
Represents sorting by computed relevance.
Methods in org.apache.lucene.search that return Sort
Sort Sort.rewrite(IndexSearcher searcher)
Rewrites the SortFields in this Sort...
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... of Sort in org.apache.lucene.search
Fields in org.apache.lucene.search declared as Sort
static Sort Sort.INDEXORDER
Represents sorting by index order.
static Sort Sort.RELEVANCE...
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[- hide]
| ... be computed.
TopFieldDocs IndexSearcher.search(Query query,
int n,
Sort sort)
Search implementation with arbitrary sorting and no filter.
protected TopFieldDocs Index... |
| ... scores and max
score should be computed.
TopDocs IndexSearcher.searchAfter(ScoreDoc after,
Query query,
Filter filter,
int n,
Sort... |
| ... a previous
result (after), allowing control over
whether hit scores and max score should be computed.
TopDocs IndexSearcher.searchAfter(ScoreDoc after,
Query query,
int... |
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http://lucene.apache.org/java/4_2_1/core/org/apache/lucene/search/.../Sort.html
2013-04-04, 00:43
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org.apache.lucene.search.grouping.term (Lucene 4.3.0 API) - Lucene - [web site]
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TermAllGroupHeadsCollector<GH extends AbstractAllGroupHeadsCollector.GroupHead<?>>
A base implementation of AbstractAllGroupHeadsCollector for retrieving the most relevant groups...
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...GroupFacetCollector
An implementation of AbstractGroupFacetCollector that computes grouped facets based on the indexed terms
from the FieldCache.
TermSecondPassGroupingCollector
Concrete implementation of Abstract...
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http://lucene.apache.org/java/4_3_0/grouping/org/apache.../package-summary.html
2013-05-06, 08:52
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GroupingSearch (Lucene 4.3.0 API) - Lucene - [web site]
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...AllGroupHeads(boolean allGroupHeads)
Whether to compute all group heads (most relevant document per group) matching the query.
GroupingSearch setAllGroups(boolean allGroups)
Whether to also compute all groups matching the query...
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... (most relevant document per group) matching the query.
This feature isn't enabled when grouping by doc block.
Parameters:
allGroupHeads - Whether to compute all group heads (most relevant...
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[+ show more]
[- hide]
| ...IncludeMaxScore(boolean includeMaxScore)
Whether to include the score of the most relevant document per group.
GroupingSearch setIncludeScores(boolean includeScores)
Whether to include the scores per doc inside a group.
Grouping... |
| ... groups are sorted.
Defaults to Sort.RELEVANCE.
Parameters:
groupSort - The sort for the groups.
Returns:
this
setSortWithinGroup
public Grouping... |
| ...Search setSortWithinGroup(Sort sortWithinGroup)
Specified how documents inside a group are sorted.
Defaults to Sort.RELEVANCE.
Parameters:
sortWithinGroup - The sort for documents inside a group
Returns:
this
set... |
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http://lucene.apache.org/java/4_3_0/grouping/org/apache/.../GroupingSearch.html
2013-05-06, 08:52
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QualityStats (Lucene 4.2.0 API) - Lucene - [web site]
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... of queries.
Nested Class Summary
Nested Classes Modifier and Type Class and Description
static class QualityStats.RecallPoint
A certain rank in which a relevant doc was found...
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....
Field Summary
Fields Modifier and Type Field and Description
static int MAX_POINTS
Number of points for which precision is computed.
Constructor Summary
Constructors Constructor...
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[- hide]
| ... and Description
QualityStats(double maxGoodPoints,
long searchTime)
Construct a QualityStats object with anticipated maximal number of relevant hits.
Method Summary
Methods... |
| ... Modifier and Type Method and Description
void addResult(int n,
boolean isRelevant,
long docNameExtractTime)
Add a (possibly relevant) doc.
static QualityStats average... |
| ... reciprocal rank over the queries or RR for a single query.
double getNumGoodPoints()
Returns the number of good points (only relevant points).
double getNumPoints()
Returns the number of points... |
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http://lucene.apache.org/java/4_2_0/benchmark/org/apache/l.../QualityStats.html
2013-03-11, 05:47
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IndexableField (Lucene 4.3.0 API) - Lucene - [web site]
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...-time boost.
Only fields can have an index-time boost, if you want to simulate
a "document boost", then you must pre-multiply it across all the
relevant fields yourself.
The boost is used...
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... to compute the norm factor for the field. By
default, in the Similarity.computeNorm(FieldInvertState) method,
the boost value is multiplied by the length normalization factor and then
rounded...
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[- hide]
| ... other than 1.0f for a field that is not
indexed (IndexableFieldType.indexed() is false) or omits normalization values
(IndexableFieldType.omitNorms() returns true).
See Also:
Similarity.compute... |
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http://lucene.apache.org/java/4_3_0/core/org/apache/luce.../IndexableField.html
2013-05-06, 08:52
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Uses of Class org.apache.lucene.search.Sort (Lucene 4.2.0 API) - Lucene - [web site]
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....INDEXORDER
Represents sorting by index order.
static Sort Sort.RELEVANCE
Represents sorting by computed relevance.
Methods in org.apache.lucene.search that return Sort Modifier and Type Method...
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...
control over whether hit scores and max score
should be computed.
TopFieldDocs IndexSearcher.search(Query query,
int n,
Sort sort)
Search implementation with arbitrary sorting...
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[+ show more]
[- hide]
| ... with arbitrary
sorting and control over whether hit scores and max
score should be computed.
TopDocs IndexSearcher.searchAfter(ScoreDoc after,
Query query,
Filter... |
| ... are after a previous
result (after), allowing control over
whether hit scores and max score should be computed.
TopDocs IndexSearcher.searchAfter(ScoreDoc after,
Query... |
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http://lucene.apache.org/java/4_2_0/core/org/apache/lucene/search/.../Sort.html
2013-03-11, 05:47
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BlockGroupingCollector (Lucene 4.3.0 API) - Lucene - [web site]
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...Sort, determines how that group
sorts against other groups. This must be non-null,
ie, if you want to groupSort by relevance use
Sort.RELEVANCE.
topNGroups - How many top groups to keep...
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....
needsScores - true if the collected documents
require scores, either because relevance is included
in the withinGroupSort or because you plan to pass true
for either get...
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[- hide]
| ... collected is NOTE: This collector is unable to compute
the groupValue per group so it will always be null.
This is normally not a problem, as you can obtain the
value just like you obtain... |
| ... is
allowed, to sort by relevance.
groupOffset - Which group to start from
withinGroupOffset - Which document to start from
within each group
maxDocsPerGroup - How many top documents to keep... |
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http://lucene.apache.org/java/4_3_0/grouping/org.../BlockGroupingCollector.html
2013-05-06, 08:52
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Uses of Package org.apache.lucene.search.grouping (Lucene 4.3.0 API) - Lucene - [web site]
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... and Description
AbstractAllGroupHeadsCollector
This collector specializes in collecting the most relevant document (group head) for each group that match the query.
Abstract...
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...AllGroupHeadsCollector
This collector specializes in collecting the most relevant document (group head) for each group that match the query.
AbstractAllGroupHeadsCollector.GroupHead
Represents a group head.
Abstract...
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[- hide]
| ...FirstPassGroupingCollector
FirstPassGroupingCollector is the first of two passes necessary
to collect grouped hits.
AbstractGroupFacetCollector
Base class for computing grouped facets.
Abstract... |
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http://lucene.apache.org/java/4_3_0/grouping/org/apache/luc.../package-use.html
2013-05-06, 08:52
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