About kmeans mapreduce implementation

Hi, I'm trying to understand Mahout kmeans mapreduce implementation. I've gone through the mapreduce tutorial at  http://hadoop.apache.org/docs/stable/mapred_tutorial.html which I kind of understood. However, I could not understand the logic of kmeans implementation in Mahout 0.8. For example

Which database should I use with Mahout

Hi, I would like to use Mahout to make recommendations on my web site. Since the data is going to be big, hopefully, I plan to use hadoop implementations of the recommender algorithms. I'm currently storing the data in mysql. Should I continue with it or should I switch to a nosql database

Re: Which database should I use with Mahout

it there. So, whatever is easiest for you. The simplest solution is a file. On Sun, May 19, 2013 at 9:52 AM, Ahmet Ylmaz ahmetyilmazefe...@yahoo.com wrote: Hi, I would like to use Mahout to make recommendations on my web site. Since the data is going to be big, hopefully, I plan to use hadoop

Re: In-memory kmeans clustering

and write the vectors to disk. Is this okay? On Tue, Apr 9, 2013 at 5:24 PM, Ted Dunning ted.dunn...@gmail.com wrote: This seems surprising. I don't think we removed it. Does anybody know better than I? On Mon, Apr 8, 2013 at 2:16 PM, Ahmet Ylmaz

In-memory kmeans clustering

Hi, It seems to be that in-memory kmeans clustering is removed from Mahout 0.7. Does this mean that it is no longer possible to do in-memory kmeans clustering with Mahout? Or, is Hadoop based kmeans clustering the only option? Thanks Ahmet

Problems with Mahout's RecommenderIRStatsEvaluator

Hi, I have looked at the internals of Mahout's RecommenderIRStatsEvaluator code. I think that there are two important problems here. According to my understanding the experimental protocol used in this code is something like this: It takes away a certain percentage of users as test users. For

Re: Problems with Mahout's RecommenderIRStatsEvaluator

is not true. From: Sean Owen sro...@gmail.com To: Mahout User List user@mahout.apache.org; Ahmet Ylmaz ahmetyilmazefe...@yahoo.com Sent: Saturday, February 16, 2013 8:41 PM Subject: Re: Problems with Mahout's RecommenderIRStatsEvaluator No, this is not a problem

Re: Reading data from a database table

@mahout.apache.org; Ahmet Ylmaz ahmetyilmazefe...@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 ahmetyilmazefe...@yahoo.comwrote: Hi, We