Hi everyone, I'm trying to retrieve videos through their meta data, such as
title, description, tags and comments. Because these text always very short,
so I wonder if BM25 and LM is useful for that? or can anyone recommend some
other retrieval method? Thanks in advance.
Best Wishes
Yours Sincere
Hi all.
Suppose I am searching for - 限定
In 3.0, QueryParser would parse this as a phrase query. In 3.3, it
parses it as a boolean query, but offers an option to treat it like a
phrase. Why would the default be not to do this? Surely you would
always want it to become a phrase query.
The new p
Hi
Look at the apache mohaut project (based on hadoop ). It seems you need
machine learning algorithms.
Best Regards
Alexander Aristov
On 17 August 2011 20:39, Ian Lea wrote:
> Certainly sounds doable in lucene. Is it basically working apart from
> false positives? Can you give some example
heard that ~80million docs per index (varying with average document size).
@Uwe Schindler: Is hashed distribution really necessary when using
MultiReader? I did hear that solr uses continuous hashing algorithm with
shards of indexes. But MultiReader didn't say anything about hashing.
QueryParser is to blaim, so avoid using it. Like you said, by just filtering
you're good. That's how I did it, when the query came, it came broken in
two, the part that needed to be (full-text)analyzed and the second part by
which I filtered as exact match(suppose it applies to you too)
2011/8/17
Josh Rehman, il 17/08/2011 05:03, ha scritto:
My organization is looking to solve a difficult problem, and I believe that
Lucene is a close fit (although perhaps it is not). However I'm not sure
exactly how to approach this problem.
[...]
maybe using semantic vectors? [0]
we've played around
What analyzer are you using? You could build your own including
MappingCharFilter to replace / and - with something that didn't cause
splits. You could also get clever and insert the translated value in
the token stream as well as the original which might give you the best
of both worlds.
If the
Certainly sounds doable in lucene. Is it basically working apart from
false positives? Can you give some examples of the false positives?
I'd be tempted to look at span queries which will let you say that
"Yesterday I put on my green plaid shirt" is a better match against
"Green plaid shirt with
At the end I've found what the problem is. The problem is in using non thread
safe Map implementations in DistanceFilter. So if you execute the searches,
using the same instance of DistanceFilter, using one thread, everything
works as expected. But executing it with multiple threads in parallel, th
Hi,
Do you use the same Analyzer for both searching and indexing. These typ of
issues only happen, if you have different analyzers. This type of query
should always work with StandardAnalyzer.
Which Lucene version and which analysis configuration do you have (including
matchVersion parameters)?
U
Hello,
I set a field which contains a name of a person to Field.Index.ANALYZED. I use
the StandardAnalyzer for the seaching part and in general it works very well.
But I found one strange case which I have to change to fit the expectation of
the customer. If I search for an exact name which is
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