Done. On Fri, May 13, 2016 at 10:47 PM, Arcadius Ahouansou (JIRA) <[email protected]> wrote: > > [ > https://issues.apache.org/jira/browse/LUCENE-6939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15283437#comment-15283437 > ] > > Arcadius Ahouansou commented on LUCENE-6939: > -------------------------------------------- > > Hello [~erickerickson] > > I can see you have updated the wiki with {{linear}}->{{position_linear}} and > {{reciprocal}}->{{position_reciprocal}} > > Thank you very much for that [~erickerickson] > > We need a new bullet point for the new blenderType, just below > {{position_reciprocal}} at the same level: > > {quote} > {{position_exponential_reciprocal}}: weightFieldValue/Math.pow(1+position, > exponent). This is a more aggressive and more configurable version of the > {{position_reciprocal}} with a configurable variable {{exponent}}. When > {{exponent}}==1.0, then both {{position_exponential_reciprocal}} and > {{position_reciprocal}} are equivalent and lead to the same result. > > {quote} > > Then, we will need a new bullet point outside of the BlenderType and just > above numFactor: > {quote} > {{exponent}}: an optional configuration variable for the > {{position_exponential_reciprocal}} blenderType. It is a decimal number used > to control how fast the score will grow or decrease. Its default value 2.0 > {quote} > > Many thanks > >> BlendedInfixSuggester to support exponential reciprocal BlenderType >> ------------------------------------------------------------------- >> >> Key: LUCENE-6939 >> URL: https://issues.apache.org/jira/browse/LUCENE-6939 >> Project: Lucene - Core >> Issue Type: Improvement >> Components: modules/spellchecker >> Affects Versions: 5.4 >> Reporter: Arcadius Ahouansou >> Priority: Minor >> Labels: suggester >> Fix For: 5.5, 6.0 >> >> Attachments: LUCENE-6939.patch >> >> >> The orignal BlendedInfixSuggester introduced in LUCENE-5354 has support for: >> - {{BlenderType.POSITION_LINEAR}} and >> - {{BlenderType.POSITION_RECIPROCAL}} . >> These are used to score documents based on the position of the matched token >> i.e the closer is the matched term to the beginning, the higher score you >> get. >> In some use cases, we need a more aggressive scoring based on the position. >> That's where the exponential reciprocal comes into play >> i.e >> {{coef = 1/Math.pow(position+1, exponent)}} >> where the {{exponent}} is a configurable variable. > > > > -- > This message was sent by Atlassian JIRA > (v6.3.4#6332) > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] >
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