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From Jason Rutherglen <>
Subject Re: Can the Suggester be updated incrementally?
Date Fri, 29 Apr 2011 04:42:38 GMT
It's answered on the wiki site:

"TSTLookup - ternary tree based representation, capable of immediate
data structure updates"

Although the EdgeNGram technique is probably more widely adopted, eg,
it's closer to what Google has implemented.

On Thu, Apr 28, 2011 at 9:37 PM, Andy <> wrote:
> I'm interested in using Suggester ( for auto-complete
on the field "Document Title".
> Does Suggester (either FST, TST or Jaspell) support incremental updates? Say I want to
add a new document title to the Suggester, or to change the weight of an existing document
title, would I need to rebuild the entire tree for every update?
> Also, can the Suggester be sharded? If the size of the tree gets bigger than the RAM
size, is it possible to shard the Suggester across multiple machines?
> Thanks
> Andy

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