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From Mark Miller <markrmil...@gmail.com>
Subject Re: SpanNearQuery: All matches within slop
Date Sat, 13 Sep 2008 01:17:41 GMT
Looks pretty interesting. A lazy span implementation could certainly be 
useful for certain highlighting situations. Barrier of entry looks a bit 
high unfortunately, but the text def helps for anyone looking to learn 
how the current spanquery stuff works.


Paul Elschot wrote:
> A bit late in reacting, but you may also may want to take a look
> at this:
> Paolo Boldi, Sebastiano Vigna
> Efficient Optimally Lazy Algorithms for  Minimal-Interval Semantics
> Oct 2007, arXiv:0710.1525v1
>
> The algorithms used in the lucene spans package are surprisingly
> similar. Nevertheless, there are some differences too, especially
> in the queue ordering conditions.
>
> Regards,
> Paul Elschot
>
>
> Op Thursday 28 August 2008 01:09:51 schreef Mark Miller:
>   
>> Its a matter of speed. Once you know the document matches the query,
>> it would in general, make no sense to keep looking unless you had a
>> strong reason to factor it into scoring. So I don't think it makes
>> much sense to modify...now adding new Span classes...
>>
>>     
>>>  Is there any
>>> general interest in modifying NearSpanOrdered/NearSpanUnordered to
>>> include all possible spans?
>>>
>>> Thanks,
>>>
>>> Nathan
>>>       
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>
>
>
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