Hi, Sergio:
maybe this article [1 abstract] [2 English text] can give you some basic ideas. We added a lot of DDC info in our Koha catalog two years ago.
HTH. Stefano

[1] http://leo.cineca.it/index.php/jlis/article/view/8766
[2] http://leo.cineca.it/index.php/jlis/article/view/8766/8060

On 12/giu/2015, at 12:03, Sergio Letuche <[log in to unmask]> wrote:

> hello community!
> 
> we are facing this challenging issue. We need to complete for a vast amount
> of records, the dewey, UDC info, has anyone had any experience with this?
> We need some way (via modeling? mahout?) to try and discover these values,
> based on some text, found in the records' metadata, and then auto complete
> these values.
> 
> I would appreciate any feedback, if there is any opensource tool you have
> used for this purpose, or if you are aware of any best practice for doing
> this task.
> 
> Best
> 


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