gnumed-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Fwd: Re: [Gnumed-devel] phrase wheel


From: Hilmar Berger
Subject: Re: Fwd: Re: [Gnumed-devel] phrase wheel
Date: Sun, 14 Sep 2003 19:56:27 +0200 (MEST)

> When typing even more the phrase wheel starts matching even
> true substrings such that eventually:
> 
> "pain" does match "repainted house"
Is that *really* necessary ? As far as I know  substring matching inside of
words is 
much more time-consuming at the backend than is matching at the start of a
term.
Maybe we should make this a special case. We could use wildcards to indicate
that 
we really want to do this :

"*pain" or "*pain*" matches "repainted" , "pain" does only match on start of
term.

> Now, Richard pointed out that some characters need to be
> ignored:
> 
> "?aneurysm" should loose the "?" for matching.
> 
> Those are stripped.
What if these characters have a meaning ? Maybe we should try to expand
special characters like

"?aneurysm" = "possible anerysm"

> -         (drop-dead painful, perhaps debatable)
> <space>           (pain severe)
> <tab>     (pain   severe)
> =         (pain=severe)
> +         (pain+swelling)
> &         (pain&swelling)
> :         (pain:severe)
> _         (pain_severity, this is debatable)
> @         (address@hidden)
> 
> Hence:
> > > default_word_separators = re.compile('[- \t=+&:address@hidden')
Same problem with special characters - maybe we should try to expand them.

> > > default_phrase_separators = re.compile('[;/|]+')
> Those are used to separate input terms to be used as fragments
> for matching. If in a lab request phrase wheel I type
> 
> "ESR;CRP;DBC" or "ESR/CRP/ASL/DBC" ...
> 
> I'd like the phrase wheel to deliver matches based on the
> phrase I am in, say the "CRP" part of the input.

Well, now I understand.

> > > default_ignored_chars = re.compile("""[?!."'\\(){}\[\]<>~#*$%^]+""")
> Well, those get ignored right from the beginning.
Again, we might want to expand them first. 

Hilmar

-- 
COMPUTERBILD 15/03: Premium-e-mail-Dienste im Test
--------------------------------------------------
1. GMX TopMail - Platz 1 und Testsieger!
2. GMX ProMail - Platz 2 und Preis-Qualit├Ątssieger!
3. Arcor - 4. web.de - 5. T-Online - 6. freenet.de - 7. daybyday - 8. e-Post





reply via email to

[Prev in Thread] Current Thread [Next in Thread]