Displaying 20 results from an estimated 2000 matches similar to: "synonym expansion for boolean prefixes."
2016 Jan 05
2
synonym expansion for boolean prefixes.
Olly Betts <olly at survex.com> writes:
> A better option for this is probably a FieldProcessor - you set one for
> a prefix and the it gets passed the value and returns a Query object
> for it. E.g. in lua (where you can just pass an anon function for the
> FieldProcessor - we ought to support C++11 lambdas for such things):
[snip]
> To achieve this with synonyms in a
2016 Jan 05
0
synonym expansion for boolean prefixes.
On Sun, Dec 27, 2015 at 11:24:36PM -0400, David Bremner wrote:
> I have an application for synonyms for tags in in notmuch, which means
> synonym expansion for a particular boolean prefix. I have a vague memory
> of Olly telling me this doesn't work, but I'm not sure about the
> details.
Yes, synonym expansion isn't done for boolean terms (only "probabilistic
2016 Jan 09
1
synonym expansion for boolean prefixes.
Olly Betts <olly at survex.com> writes:
> On Tue, Jan 05, 2016 at 08:43:13AM -0400, David Bremner wrote:
>> Olly Betts <olly at survex.com> writes:
>>
>> > To achieve this with synonyms in a configurable way you'd need to
>> > rewrite the synonyms in the database to match the current configuration,
>> > so it's not as dynamic as the
2016 Jan 09
0
synonym expansion for boolean prefixes.
On Tue, Jan 05, 2016 at 08:43:13AM -0400, David Bremner wrote:
> Olly Betts <olly at survex.com> writes:
>
> > To achieve this with synonyms in a configurable way you'd need to
> > rewrite the synonyms in the database to match the current configuration,
> > so it's not as dynamic as the above.
>
> Well, the configuration needs to be somewhere. Would
2016 Jan 10
1
synonym expansion for boolean prefixes.
Olly Betts <olly at survex.com> writes:
> A better option for this is probably a FieldProcessor - you set one for
> a prefix and the it gets passed the value and returns a Query object
> for it. E.g. in lua (where you can just pass an anon function for the
> FieldProcessor - we ought to support C++11 lambdas for such things):
By the way, is there an online version of the
2018 Jul 19
1
choosing between probabilistic and boolean prefixes for terms
Hi all,
public-inbox allows searching for git blob names (e.g. "badc0ffee")
in patches. Initially, I chose to use add_prefix for probabilistic
terms, since I assumed it could be a superset of what boolean
searching offered. Unfortunately, it doesn't seem to be the case
because stemming is interfering.
So switching to boolean filtering seems to work; and it is
fine for mechanical
2012 Jan 05
1
Enhance synonyms feature of the query parser (patch included)
Very few people seem to be using synonym in Xapian, I recently found some problems in the use of synonyms.
Normally, I think we should not contain any prefix info in synonym table except that 'Z'.
For example, I have the following synonyms and prefix info:
db.add_synonym("search", "find");
db.add_synonym("Zsearch", "Zfind");
2007 Oct 19
1
Re: [Xapian-commits] 9476: trunk/xapian-core/ trunk/xapian-core/include/xapian/ trunk/xapian-core/queryparser/ trunk/xapian-core/tests/
olly wrote:
> SVN root: svn://svn.xapian.org/xapian
> Changes by: olly
> Revision: 9476
> Date: 2007-10-19 03:47:11 +0100 (Fri, 19 Oct 2007)
>
> Log message (14 lines):
> include/xapian/queryparser.h,queryparser/queryparser.cc,
> queryparser/queryparser.lemony,queryparser/queryparser_internal.h,
> tests/queryparsertest.cc: Since calling
2018 Sep 29
2
xapian parser bug?
Today we noticed that keywords can't be searched as prefixed terms. Or
that's what it looks like anyway. I tested and, or, and not.
╰─% NOTMUCH_DEBUG_QUERY=y notmuch search 'subject:"and"'
Query string is:
subject:"and"
notmuch search: A Xapian exception occurred
A Xapian exception occurred parsing query: Syntax: <expression> AND <expression>
Query
2009 Aug 15
1
extracting text from wordnet using synonym()
Dear group,
There are postings on extracting partial string using sub()/gsub()/gsubfn()
but I still couldn't figure this one out. Supposed I am pulling the
synonyms of "help" using synonyms("help") from wordnet and get the
followings:
> synonyms("help")
[1] "c(\"aid\", \"assist\", \"assistance\", \"help\")"
2013 Sep 02
2
having trouble with prefixes
I've got a small test database setup with one record.
$ delve -r 1 -V /tmp/1/
Values for record #1: 0:DD4F2162FFFF0E43741A4A1C2B8EC0E7 1:./Text_page_scan_2.jpg 2:jpg 3:.jpg
Term List for record #1: E:.jpg P:./Text_page_scan_2.jpg Q:DD4F2162FFFF0E43741A4A1C2B8EC0E7 T:jpg
The terms were added with lines like this:
doc.add_term(string("P:") + path);
Problem is, I can't seem to
2013 Sep 22
2
How to filter search result with query with has white space.
Hello,
include <iostream>#include <string>#include <xapian.h>struct document{
std::string title;
std::string content;
std::string url;};
void indexData(document d) {
try {
Xapian::WritableDatabase db("/Users/ramesh/Desktop/xapian",
Xapian::DB_CREATE_OR_OPEN);
Xapian::TermGenerator indexer;
Xapian::Stem
2013 Sep 22
2
How to filter search result with query with has white space.
Hello,
include <iostream>#include <string>#include <xapian.h>struct document{
std::string title;
std::string content;
std::string url;};
void indexData(document d) {
try {
Xapian::WritableDatabase db("/Users/ramesh/Desktop/xapian",
Xapian::DB_CREATE_OR_OPEN);
Xapian::TermGenerator indexer;
Xapian::Stem
2018 Sep 30
0
xapian parser bug?
David — this isn't the behaviour I see what QueryParser alone, unless you're driving it in a way I don't expect. In python:
>>> import xapian
>>> qp = xapian.QueryParser()
>>> qp.add_prefix('subject', 'S')
>>> str(qp.parse_query('subject:"and"', qp.FLAG_DEFAULT|qp.FLAG_BOOLEAN_ANY_CASE))
'Query(Sand at 1)'
2017 Dec 29
2
notmuch: Xapian exception during database creation
Running notmuch from git on Debian testing[1] with the mail and database
sitting on a ZFS filesystem, adding mail to a new database:
> agrajag-testing ~/s/notmuch % ./notmuch new
> Found 605510 total files (that's not much mail).
> add_file: A Xapian exception occurred36m 37s remaining).
> A Xapian exception occurred adding message: Unexpected end of posting list for
2011 Jul 27
3
Searching using prefixes
Hi guys
I'm trying to figure out how I can use probabilistic searching on a
given field within a document; I've written to the list about this
before, but haven't quite figured out what's required and, following a
little research, I think I understand what I need to do but I'd like a
clarification on this.
o We have a database of a number of documents, with fields: title,
2011 Jul 28
1
Xapian and Synonyms
Hi guys
I've just had a thought about something we do with our search on
ReportBuyer.com: we cater for both American and British English in our
searches and we have had plans for a while now to implement something
that allows users to find 'colour' and 'color', 'tap' and 'faucet' by
doing some clever programming.
Looking at the Xapian docs, though, it appears
2018 Apr 07
3
Database corruption after clean rebuild
Javier Garcia <javiertury at gmail.com> writes:
> I've applied the path to notmuch 0.26.1 without success.
>
> $ rm -rf ~/.mail/.notmuch
> $ LD_LIBRARY_PATH=/hidden-path/notmuch-0.26.1/lib/:$LD_LIBRARY_PATH
> ./notmuch new
> Found 20065 total files (that's not much mail).
> Processed 20065 total files in 58s (341 files/sec.).
> Added 19605 new
2020 Apr 07
2
crash after running notmuch new
Matt <mattator at gmail.com> writes:
> thanks didn't know about xapian-check !
> the output
> ===
> docdata:
> blocksize=8K items=70 firstunused=3 revision=421 levels=0 root=2
> B-tree checked okay
> docdata table structure checked OK
>
> termlist:
> blocksize=8K items=186136 firstunused=62058 revision=421 levels=2 root=12260
> B-tree checked okay
>
2018 Sep 10
3
Notmuch DB Problems
Mueen Nawaz <mueen at nawaz.org> writes:
> After a lot of poking around, I figured out the problem, and this may be
> of interest to the developers (although not sure if it is a xapian issue
> or a notmuch issue).
>
> Here's why it would freeze:
>
> I have a post-new hook that runs a Python script. Depending on whether
> the new email it is processing matches a