Random Indexing

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Teodor Dimov

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Oct 5, 2016, 12:29:13 PM10/5/16
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Hi passing 1  as how many passes for the Reflective Random Indexing means its just Random Indexing right?

Dominic Widdows

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Oct 5, 2016, 12:33:57 PM10/5/16
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It varies a lot depending on what dataset you're using and what problem you're trying to solve. In this article we found that 2 cycles was good, starting with terms, so 2 or 3 if you start with documents. http://www.sciencedirect.com/science/article/pii/S1532046409001208.

Best wishes,
Dominic

On Wed, Oct 5, 2016 at 7:52 AM, Teodor Dimov <teod...@gmail.com> wrote:
Hi passing 1  as how many passes for the Reflective Random Indexing means its just Random Indexing right?

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Teodor Dimov

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Oct 5, 2016, 2:55:52 PM10/5/16
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Ok thanks Dominic. I am looking at semantic vectors to create pairwise phrases for autocomplete recommendation and then mix them with actual logs of searches to enrich suggestion dataset. i will try with two but my concerns are that the data set is small to begin with (only few hundred to 1-2k words per document) and using RRI will make them all similar (i think increasing passes will do that). Any thoughts? 

Dominic Widdows

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Oct 5, 2016, 2:58:17 PM10/5/16
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My main thoughts for such a small corpus is to try various options and see what results you get. This includes trying out positional indexes.

-Dominic

On Wed, Oct 5, 2016 at 9:54 AM, Teodor Dimov <teod...@gmail.com> wrote:
Ok thanks Dominic. I am looking at semantic vectors to create pairwise phrases for autocomplete recommendation and then mix them with actual logs of searches to enrich suggestion dataset. i will try with two but my concerns are that the data set is small to begin with (only few hundred to 1-2k words per document) and using RRI will make them all similar (i think increasing passes will do that). Any thoughts? 

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