[Xapian-discuss] Using synonyms and order of results

[Websuche :: Felix Antonius Wilhelm Ostmann]

I found a simple solution by using OP_AND_MAYBE and OP_SCALE_WEIGHT!

The new query:
[QUERY: Xapian::Query((0.5 * ((Zstempel:(pos=1) SYNONYM
Zamtszeich:(pos=1) SYNONYM Zgrubenholz:(pos=1) SYNONYM
Zkennzeich:(pos=1) SYNONYM Zpoststempel:(pos=1) SYNONYM
Zpragestempel:(pos=1) SYNONYM Zpunz:(pos=1) SYNONYM Zsiegel:(pos=1))
FILTER QMde) AND_MAYBE Zstempel:(pos=1)))]

It also works with multiple terms.

Again, xapian is simple and fast!


Am 30.01.2012 10:28, schrieb Websuche :: Felix Antonius Wilhelm Ostmann:
> We are using FLAG_AUTO_SYNONYMS and it works like a charm (+stemmer),
> but we currently have a problem with the order of the results. We think,
> the best result will be a result without a synoym.
> 
> We search for stempel (german for chop) and after FLAG_AUTO_SYNONYMS
> (+STEM_SOME as stemming strategy) we get the following query:
> 
> [QUERY: Xapian::Query(((Zstempel:(pos=1) SYNONYM Zamtszeich:(pos=1)
> SYNONYM Zgrubenholz:(pos=1) SYNONYM Zkennzeich:(pos=1) SYNONYM
> Zpoststempel:(pos=1) SYNONYM Zpragestempel:(pos=1) SYNONYM Zpunz:(pos=1)
> SYNONYM Zsiegel:(pos=1)) FILTER QMde))]
> 
> [POS: 0] [PERCENT: 100%] [WEIGHT:10.153175] [ID: 64977] [PID: 8876897]
> ...
> [POS: 38] [PERCENT: 100%] [WEIGHT:8.763471] [ID: 125701] [PID: 9023761]
> ...
> 
> Term List for record #64977: QMde QMint Zpunz punzen
> Term List for record #125701: QMde QMint Zstempel Zstempelkiss Zstempeln
> stempel stempelkissen stempeln
> 
> 
> Perhaps there is a solution by building a special search or two searches
> (first without synonym, second with), but the problem starts, when there
> are 3.. terms to search for, all with synoynms.
> 
> Is there a way to prefer results with exact hits?
> 
> _______________________________________________
> Xapian-discuss mailing list
> Xapian-discuss at lists.xapian.org
> http://lists.xapian.org/mailman/listinfo/xapian-discuss
> 


-- 
Mit freundlichen Grüßen

Felix Antonius Wilhelm Ostmann
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