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From Ahmet Ylmaz <ahmetyilmazefe...@yahoo.com>
Subject Re: Reading data from a database table
Date Thu, 01 Nov 2012 11:44:44 GMT


Thanks Sean,
We will try ReloadFromJDBCDataMode.
It seems to be exactly what we want.

We are using mysql so there is no need to write a JDBCDataModel implementation since it is
available in Mahout.


Ahmet



________________________________
 From: Sean Owen <srowen@gmail.com>
To: user@mahout.apache.org; Ahmet Ylmaz <ahmetyilmazefendi@yahoo.com> 
Sent: Thursday, November 1, 2012 12:08 PM
Subject: Re: Reading data from a database table
 
You want ReloadFromJDBCDataModel + a JDBCDataModel implementation.

On Thu, Nov 1, 2012 at 10:05 AM, Ahmet Ylmaz <ahmetyilmazefendi@yahoo.com>wrote:

> Hi,
>
> We want to build a data model from a ratings table (userid, itemid,
> rating) stored in a database. We want the model to be stored in memory.
> However, we couldn't find a way to do this using the available Mahout
> codes.
>
> JDBC based data models don't work because, as it is said in Mahout
> in Action book, they are used when the data does not fit into memory.
>
> Actually
>  what we need is a class similar to FileDataModel which will return a
> GenericDataModel from a database table (not from a file).
>
> What are your suggestions to solve this problem?
>
> Thanks
>
> Ahmet
>
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