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From "Shifflett, David [USA]" <Shifflett_Da...@bah.com>
Subject Re: [External] Re: How to ignore certain words based on query specifics
Date Thu, 11 Jul 2019 15:31:21 GMT
Evert,
It is definitely not a bug.
I was asking about how to do something, I couldn't quite figure out.
Stop words is the way to go.

David Shifflett
 

On 7/11/19, 11:26 AM, "evert.wagenaar" <evert.wagenaar@gmail.com> wrote:

    I see it as a feature, not a bug. The appearance of stop words in the Search Summary makes
it more clear what the Hit is about.Not sure but I think Google does the same in search summaries.-Evert

    -------- Original message --------From: "Shifflett, David [USA]" <Shifflett_David@bah.com>
Date: 7/11/19  8:38 PM  (GMT+08:00) To: java-user@lucene.apache.org Subject: Re: [External]
Re: How to ignore certain words based on query specifics I just tested this with the search.highight.Highlighter
class.Is this the 'old default highlighter'?I phrased my question badly.Of course the stop
words shouldn't be highlighted,as they wouldn't match any query.My question was really, would
the stop words be available forinclusion in the highlight context (surrounding a match)?The
answer is yes the stop words do appear in the context,and are not highlighted.Thanks,David
Shifflett On 7/10/19, 9:12 PM, "Michael Sokolov" <msokolov@gmail.com> wrote:    I'm
not au courant with highlighters as I used to be. I think some of them    work using postings,
and for those, no, you wouldn't be able to highlight    stop words. But maybe you can use
the old default highlighter that would    reanalyze the document from a stored field, using
an Analyzer that doesn't    remove stop words? Sorry I'm not sure if that exists any more,
maybe    someone else will know.        On Tue, Jul 9, 2019, 10:17 AM Shifflett, David [USA]
<    Shifflett_David@bah.com> wrote:        > Michael,    > Thanks for your reply.
   >    > You are correct, the desired effect is to not match 'freedom ...'.    >
I hadn't considered the case where both free* and freedom match.    >    > My solution
'free* and not freedom' would NOT match either of your    > examples.    >    > I
think what I really want is    > Get every matching term from a matching document,    >
and if the term also matches an ignore word, then ignore the match.    >    > I hadn't
considered the stopwords approach, I'll look into that.    > If I add all the ignore words
as stop words, will that effect highlighting?    > Are the stopwords still available for
highlighting?    >    > Thanks,    > David Shifflett    >    >    > On 7/9/19,
11:58 AM, "Michael Sokolov" <msokolov@gmail.com> wrote:    >    >     I think
what you're saying in you're example is that "free*" should    >     match anything with
a term matching that pattern, but not *only*    >     freedom. In other words, if a document
has "freedom from stupidity"    >      then it should not match, but if the document has
"free freedom from    >     stupidity" than it should.    >    >     Is that correct?
   >    >     You could apply stopwords, except that it sounds as if this is a    >
    per-user blacklist, and you want them to share the same index?    >    >     On
Tue, Jul 9, 2019 at 11:29 AM Shifflett, David [USA]    >     <Shifflett_David@bah.com>
wrote:    >     >    >     > Sorry for the weird reply path, but I couldn’t
find an easy reply    > method via the list archive.    >     >    >     >
Anyway …    >     >    >     > The use case is as follows:    >     >
Allow the user to specify queries such as ‘free*’    >     > and also include similar
words to be ignored, such as freedom.    >     > Another example would be ‘secret*’
and secretary.    >     >    >     > I want to keep the ignore words separate
so they apply to all    > queries,    >     > but then realized the ignore words
should only apply to relevant    > (matching) queries.    >     >    >     >
I don’t want the users to be required to add ‘and not WORD’ many    > times to each
of the listed queries.    >     >    >     > David Shifflett    >     >
   >     > From: Diego Ceccarelli    >     >    >     > Could you please
describe the use case? maybe there is an easier    > solution    >     >    >
    >    >     >    >     > From: "Shifflett, David [USA]" <Shifflett_David@bah.com>
   >     > Date: Tuesday, July 9, 2019 at 8:02 AM    >     > To: "java-user@lucene.apache.org"
<java-user@lucene.apache.org>    >     > Subject: How to ignore certain words
based on query specifics    >     >    >     > Hi all,    >     > I have
a configuration file that lists multiple queries, of all    > different types,    >
    > and that lists words to be ignored.    >     >    >     > Each of these
lists is user configured, variable in length and    > content.    >     >    >
    > I know that, in general, unless the ignore word is in the query it    > won’t
match,    >     > but I need to be able to handle wildcard, fuzzy, and Regex, queries
   > which might match.    >     >    >     > What I need to be able to do
is ignore the words in the ignore list,    >     > but only when they match terms the
query would match.    >     >    >     > For example: if the query is ‘free*’
and ‘freedom’ should be ignored,    >     > I could modify the query to be ‘free*’
and not freedom.    >     >    >     > But if ‘liberty’ is also to be ignored,
I don’t want to add ‘and not    > liberty’ to that query    >     > because
that could produce false negatives for documents containing    > free and liberty.    >
    >    >     > I think what I need to do is:    >     > for each query  
 >     >   for each ignore word    >     >     if the query would match the ignore
word,    >     >       add ‘and not ignore word’ to the query    >     > 
  >     > How can I test if a query would match an ignore word without putting    >
the ignore words into an index    >     > and searching the index?    >     >
This seems like overkill.    >     >    >     > To make matters worse, for a query
like A and B and C,    >     > this won’t match an index of ignore words that contains
C, but not A    > or B.    >     >    >     > Thanks in advance, for any suggestions
or advice,    >     > David Shifflett    >     >    >    >     ---------------------------------------------------------------------
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