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https://issues.apache.org/jira/browse/LUCENE-3440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13118012#comment-13118012
]
sebastian L. commented on LUCENE-3440:
--------------------------------------
Hm, I tried to do that all with trunk but:
{code:borderStyle=dotted}
29.09.2011 15:43:09 org.apache.solr.common.SolrException log
SEVERE: java.lang.VerifyError: class
org.apache.lucene.analysis.ReusableAnalyzerBase overrides final method
tokenStream.(Ljava/lang/String;Ljava/io/Reader;)Lorg/apache/lucene/analysis/TokenStream;
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2733)
at
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1124)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1612)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1491)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2733)
at
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1124)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1612)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1491)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:403)
at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:407)
at org.apache.solr.core.SolrCore.createInitInstance(SolrCore.java:456)
at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1653)
at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1647)
at org.apache.solr.core.SolrCore.initPlugins(SolrCore.java:1680)
at org.apache.solr.core.SolrCore.loadSearchComponents(SolrCore.java:875)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:574)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:507)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:653)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:407)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:292)
at
org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:241)
at
org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:93)
at
org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
at
org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
at
org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
at
org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4001)
at
org.apache.catalina.core.StandardContext.start(StandardContext.java:4651)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at
org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
at
org.apache.catalina.core.StandardService.start(StandardService.java:519)
at
org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
{code}
> FastVectorHighlighter: IDF-weighted terms for ordered fragments
> ----------------------------------------------------------------
>
> Key: LUCENE-3440
> URL: https://issues.apache.org/jira/browse/LUCENE-3440
> Project: Lucene - Java
> Issue Type: Improvement
> Components: modules/highlighter
> Affects Versions: 3.5, 4.0
> Reporter: sebastian L.
> Priority: Minor
> Labels: FastVectorHighlighter
> Fix For: 3.5, 4.0
>
> Attachments: LUCENE-3.5-SNAPSHOT-3440-6-ProofOfConcept.java,
> LUCENE-3.5-SNAPSHOT-3440-6.patch, LUCENE-4.0-SNAPSHOT-3440-3.patch,
> WeightOrderFragmentsBuilder_table01.html,
> WeightOrderFragmentsBuilder_table02.html
>
>
> The FastVectorHighlighter uses for every term found in a fragment an equal
> weight, which causes a higher ranking for fragments with a high number of
> words or, in the worst case, a high number of very common words than
> fragments that contains *all* of the terms used in the original query.
> This patch provides ordered fragments with IDF-weighted terms:
> total weight = total weight + IDF for unique term per fragment * boost of
> query;
> The ranking-formula should be the same, or at least similar, to that one used
> in org.apache.lucene.search.highlight.QueryTermScorer.
> The patch is simple, but it works for us.
> Some ideas:
> - A better approach would be moving the whole fragments-scoring into a
> separate class.
> - Switch scoring via parameter
> - Exact phrases should be given a even better score, regardless if a
> phrase-query was executed or not
> - edismax/dismax-parameters pf, ps and pf^boost should be observed and
> corresponding fragments should be ranked higher
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