Dismax parameters weirdness - boosting/mm causes no match ?

[Marek Tichy]

Hi,

I'd really appreciate if somebody could help me.
Solr 3.1, I have a (multivalued) field called author_split, which splits
original author names, i.e. "Mills, Joy". When I use the solr web
interface to enter

    author_split:mills

the ExtendedDismaxQParser produces query

    +author_split:mills

which returns 12 results. When I try

   +author_split:joy

it returns 15 results (Fielding, Joy is responsible for the extra 3).
And now the mystery:

When I use my web app, entering query mills produces (parsedquery_toString):

    +(author_split:mills^80.0)~1.0 ()

and that gives NO RESULTS !

However, the other search

    +(author_split:joy^80.0)~1.0 ()

returns the expected 15 results ?

Many thanks for any reply, I'l loosing hope !

Marek Tichy


PS: Below is the of parameters I'm sending alongside and the fieldtype
definition

    *
      mm (String, 1 characters ) 1
    *
      facet (String, 2 characters ) on
    *
      facet.mincount (String, 1 characters ) 1
    *
      tie (String, 1 characters ) 1
    *
      qf (String, 17 characters ) author_split^80.0
    *
      json.nl (String, 3 characters ) map
    *
      wt (String, 4 characters ) json
    *
      version (String, 3 characters ) 1.2
    *
      rows (String, 2 characters ) 10
    *
      pf (String, 0 characters )
    *
      debugQuery (String, 4 characters ) true
    *
      start (String, 1 characters ) 0
    *
      q (String, 5 characters ) mills
    *
      facet.field (Array, 2 elements) | (Callback) publisher::author();
    *
      qt (String, 11 characters ) partitioned


<fieldType name="text_ws" class="solr.TextField" positionIncrementGap="100">
      <analyzer type="index">
        <charFilter class="solr.MappingCharFilterFactory"
mapping="mapping-FoldToASCII.txt"/>
        <tokenizer class="solr.WhitespaceTokenizerFactory"/>
        <filter class="solr.LowerCaseFilterFactory"/>
        <filter class="solr.WordDelimiterFilterFactory"
                generateWordParts="1"
                generateNumberParts="0"
                catenateWords="0"
                catenateNumbers="0"
                catenateAll="0"
                splitOnCaseChange="0"
                preserveOriginal="0"/>
      </analyzer>
      <analyzer type="query">
        <charFilter class="solr.MappingCharFilterFactory"
mapping="mapping-FoldToASCII.txt"/>
        <tokenizer class="solr.WhitespaceTokenizerFactory"/>
        <filter class="solr.LowerCaseFilterFactory"/>
        <filter class="solr.WordDelimiterFilterFactory"
                generateWordParts="1"
                generateNumberParts="0"
                catenateWords="0"
                catenateNumbers="0"
                catenateAll="0"
                splitOnCaseChange="0"
                preserveOriginal="0"/>
      </analyzer>
    </fieldType>

<field name="author_split" type="text_ws" indexed="true"
multiValued="true"/>