Then I would suggesz that you modify the shell script to periodically
precompute the recommendations and put them into a database afterwards
which you can query via PHP.
It makes no sense IMO to call a webservice that starts a Hadoop job and
wait for the results.
/s
On 14.01.2013 10:12, Sékine Coulibaly wrote:
> Ibrahim, Sebastian,
>
> I precisely am trying to create a PHP Webservice to deliver recommendations.
>
> On a webpage, I would call that webservice, and I was imagining having that
> webservice calling the factorize-movielens script itself, and transforming
> the latter output to something like
> [{itemID:557,value:5.988698},{itemID:578,value:5.0461025},{itemID:1149,value:4.9268165},{itemID:572,value:4.9265957},{itemID:3245,value:4.8139095}],
> a JSON I could easily parse in my front-end.
>
> I don't want (if possible) to involve any Java application or http server
> as suggested (kornapi,myrrix), although I understand these would be a
> sensible way to do (I'm interested in learning MAhout, so obfuscating that
> part is something I'd like to avoid).
>
> Regards
>
>
> 2013/1/14 Sebastian Schelter <[email protected]>
>
>> This blog post might be useful for you:
>>
>> http://ssc.io/a-recommendation-webservice-in-10-minutes/
>>
>> On 14.01.2013 09:31, Sékine Coulibaly wrote:
>>> Hi Ibrahim,
>>>
>>> Actually, for now, I wish I could use it locally, in other words without
>>> using Haddop framework. I've been successfull in trying to launch :
>>> factorize-movielense-1M.sh ratings.dat
>>>
>>> I wish I could launch that very same command from PHP. The Apache user is
>>> www-data indeed. The /tmp/mahout-work-www-data directory is created but
>>> only contains the ratings.csv file.
>>>
>>> Regards
>>>
>>>
>>>
>>>
>>> 2013/1/14 Ibrahim Yakti <[email protected]>
>>>
>>>> your php scripts run using apache user which most probably doesn't have
>>>> HADOOP_HOME, HADOOP_CONF_DIR, ...etc variables defined, please try to
>>>> define them in the php script before making the call.
>>>>
>>>> I hope it works.
>>>>
>>>>
>>>> --
>>>> Ibrahim
>>>>
>>>>
>>>> On Sun, Jan 13, 2013 at 11:38 PM, Sékine Coulibaly <
>> [email protected]
>>>>> wrote:
>>>>
>>>>> Hi there,
>>>>>
>>>>> I've been able to start locally the factorize-movielens script. What
>> I'd
>>>>> like to do is basically create a PHP webservice able to start that very
>>>>> same script, and return the recommendations.
>>>>>
>>>>> I'm using Apache2, and I use PHP's shell_exec to start the script as
>>>>> follows :
>>>>>
>>>>>
>>>>> putenv("JAVA_HOME=" .'/usr/local/jvm/jdk1.7.0_05');
>>>>> $output =
>>>>>
>>>>>
>>>>
>> shell_exec('/home/scoulibaly/Téléchargements/mahout-distribution-0.6/examples/bin/factorize-movielens-1M.sh
>>>>>
>>>>>
>>>>
>> /home/scoulibaly/Téléchargements/mahout-distribution-0.6/examples/bin/ratings.dat');
>>>>> echo $output;
>>>>>
>>>>>
>>>>> Unfortunately the output I get is as follows :
>>>>>
>>>>> creating work directory at /tmp/mahout-work-www-data
>>>>>
>>>>> Converting ratings...
>>>>>
>>>>> MAHOUT_LOCAL is not set; adding HADOOP_CONF_DIR to classpath.
>>>>> no HADOOP_HOME set, running locally
>>>>> MAHOUT_LOCAL is not set; adding HADOOP_CONF_DIR to classpath.
>>>>> no HADOOP_HOME set, running locally
>>>>> MAHOUT_LOCAL is not set; adding HADOOP_CONF_DIR to classpath.
>>>>> no HADOOP_HOME set, running locally
>>>>> MAHOUT_LOCAL is not set; adding HADOOP_CONF_DIR to classpath.
>>>>> no HADOOP_HOME set, running locally
>>>>>
>>>>> RMSE is:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Sample recommendations:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> removing work directory
>>>>>
>>>>>
>>>>> I know this is not strictly a Mahout issue, but if someone could point
>>>> me a
>>>>> way to start Mahout jobs from a PHP script, I'd be very grateful !
>>>>>
>>>>> Thank you
>>>>>
>>>>
>>>
>>
>>
>
