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From Karl Wettin <>
Subject Re: How to handle frequent updates.
Date Tue, 15 Jul 2008 07:30:57 GMT

13 jul 2008 kl. 16.58 skrev miztaken:
>> What sort of operations do you use the matrix for? How large can it
>> grow? Can you give an example of what the matrix might contain?
>> What was the reason to solve your problem using Lucene? Is there some
>> specific feature that made something easier or faster than the
>> solutions you discarded?
> I want to do some mathematical operation which requires matrix  
> manipulation,
> and those matrix can be of huge size even though stored as sparse so  
> i want
> an embedded system (DB or API) which allow me to store, update,  
> delete and
> retrieve cell of matrix as fast as possilble considering disk  
> constraints.
> Any suggestion?

I still don't understand why you choose Lucene in the first place. Do  
you for instance query the index? Or is Lucene only used to persist  
the matrix?

Perhaps HAMA, BDB or a relational database could work for you.


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