-----Original Message----- From: Thomas Weiner [mailto:weiner@tu-harburg.de] Sent: Tuesday, September 28, 1999 8:55 AM To: zope@zope.org Subject: [Zope] ZCatalog: searching for parts of words?
Hello Zopestas,
is there a way to use the full textindex of ZCatalog for finding parts of words?
In general, no.
For Example:
seeking for 'word' would also bring up 'words'?
This will work because of certain rules of english (words is the plural of word) and the Catalog does what's called 'stemming' to remove common english suffixes from words, like the 's' from the end of a word to singularize it.
I'm not sure, whether this is just a special issue in German - due to the fact that German accepts any thinkable and unthinkable combination of joined nouns.
The CVS version of Zope has been much improved in this area. First, 'z2.py' offers the '-L' switch to set your locale. This is useful so that the Catalog doesn't split up your words on non-english characters like umlauts and such. Second, ZCatalog supports a new feature called a Lexicon, which allows you to have more control over stopwords and stemming rules. More improvement is needed, but I'm not exactly sure where to go without some specific feedback. In the future, there may be 'Pluggable Lexicons' for various languages. -Michel