Yes. You're confusing an *engine* with a full-blown application.
The user here is a Java programmer. I argue that guessing, which
is what you're asking for, is emphatically NOT in the domain of the
search *engine*, which is what Lucene is. Imagine the poor programmer
trying to understand why certain results were returned when the
engine changed the query while attempting to guess. Chaos.
Dealing with bad user input is the application's responsibility. You're
perfectly
free to try to figure out what "the right thing to do" is, given your search
domain, when you catch a parsing error. And I flat guarantee you'll be wrong
for some percentage of cases.
Which is why the engine is doing what it's doing, IMO...
Best
Erick
On Mon, Jan 24, 2011 at 8:40 PM, Andrew Kane <andrewrk...@gmail.com> wrote:
> What are you talking about?! A search engine isn't a compiler with a
> programmer for a user and a strict syntax. The job of a search engine is
> to
> produce the best results it can *for any given input*. Am I missing
> something here?
>
> Andrew.
>
>
> On Mon, Jan 24, 2011 at 5:15 PM, Adriano Crestani <
> adrianocrest...@gmail.com
> > wrote:
>
> > It's valid syntax error, since - is the exclusion operator, so the QP
> > expects a term, phrase, parenthesis, etc after that.
> >
> > On Mon, Jan 24, 2011 at 5:05 PM, Andrew Kane <andrewrk...@gmail.com>
> > wrote:
> >
> > > Shouldn't these two queries be fine? (from TREC million query track).
> > > Should this be entered as a bug?
> > >
> > > Thanks,
> > >
> > > Andrew.
> > >
> > >
> > >
> > > Cannot parse 'statistics on child labor laws 1930 -': Encountered
> "<EOF>"
> > > at
> > > line 1, column 37.
> > > Was expecting one of:
> > > "(" ...
> > > "*" ...
> > > <QUOTED> ...
> > > <TERM> ...
> > > <PREFIXTERM> ...
> > > <WILDTERM> ...
> > > "[" ...
> > > "{" ...
> > > <NUMBER> ...
> > > <TERM> ...
> > > "*" ...
> > >
> > > Cannot parse 'u.s. census bureau local employment dynamics --':
> > Encountered
> > > " "-" "- "" at line 1, column 46.
> > > Was expecting one of:
> > > "(" ...
> > > "*" ...
> > > <QUOTED> ...
> > > <TERM> ...
> > > <PREFIXTERM> ...
> > > <WILDTERM> ...
> > > "[" ...
> > > "{" ...
> > > <NUMBER> ...
> > > <TERM> ...
> > > "*" ...
> > >
> >
>
