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Posted to user@mahout.apache.org by Willem, , MTN, , Co...@mtn.co.za on 2013/03/26 09:49:31 UTC

Create named vectors from CSV file

Hi,

I need to create named vectors form a CSV file. Can someone please assist with the best way of doing this and provide example if possible.

Currently using CDH 4 and Mahout 0.7.

Regards,
Willem Conradie


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RE: Create named vectors from CSV file

Posted by Willem, , MTN, , Co...@mtn.co.za.

Thanks for the reply Dan. I eventually created custom  java classes that read in the CSV, create named vectores (dense vectors) and write the ouptut using  org.apache.mahout.math.VectorWritable. The named vectors are really important for our analysis.

I would prefer to use built in Mahout classes if possible, haven't given up on CSVVectorIterator yet.

Regards,
Willem

-----Original Message-----
From: Dan Filimon [mailto:dangeorge.filimon@gmail.com]
Sent: Tuesday, 26 March 2013 06:22 PM
To: user@mahout.apache.org
Subject: Re: Create named vectors from CSV file

Hi,

While I'm not sure whether it was available in 0.7, there's a CSVVectorIterator class in o.a.m.utils.vectors.csv that you can probably use.
I plan on using it myself, so let me know if you have any issues.

On Tue, Mar 26, 2013 at 10:49 AM, Willem Conradie  [ MTN – Innovation Centre ] <Co...@mtn.co.za> wrote:
> Hi,
>
> I need to create named vectors form a CSV file. Can someone please assist with the best way of doing this and provide example if possible.
>
> Currently using CDH 4 and Mahout 0.7.
>
> Regards,
> Willem Conradie
>
>
> ________________________________
> NOTE: This e-mail message is subject to the MTN Group disclaimer see
> http://www.mtn.co.za/SUPPORT/LEGAL/Pages/EmailDisclaimer.aspx

NOTE: This e-mail message is subject to the MTN Group disclaimer see http://www.mtn.co.za/SUPPORT/LEGAL/Pages/EmailDisclaimer.aspx

Re: Create named vectors from CSV file

Posted by Dan Filimon <da...@gmail.com>.

Hi,

While I'm not sure whether it was available in 0.7, there's a
CSVVectorIterator class in o.a.m.utils.vectors.csv that you can
probably use.
I plan on using it myself, so let me know if you have any issues.

On Tue, Mar 26, 2013 at 10:49 AM, Willem Conradie  [ MTN – Innovation
Centre ] <Co...@mtn.co.za> wrote:
> Hi,
>
> I need to create named vectors form a CSV file. Can someone please assist with the best way of doing this and provide example if possible.
>
> Currently using CDH 4 and Mahout 0.7.
>
> Regards,
> Willem Conradie
>
>
> ________________________________
> NOTE: This e-mail message is subject to the MTN Group disclaimer see http://www.mtn.co.za/SUPPORT/LEGAL/Pages/EmailDisclaimer.aspx