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From lisendong <lisend...@163.com>
Subject Re: there are about 50% all-zero vector in the als result
Date Thu, 02 Apr 2015 11:15:53 GMT
yes! 
thank you very much:-)

> 在 2015年4月2日,下午7:13,Sean Owen <sowen@cloudera.com> 写道:
> 
> Right, I asked because in your original message, you were looking at
> the initialization to a random vector. But that is the initial state,
> not final state.
> 
> On Thu, Apr 2, 2015 at 11:51 AM, lisendong <lisendong@163.com> wrote:
>> NO, I’m referring to the result.
>> you means there might be so many zero features in the als result ?
>> 
>> I think it is not related to the initial state, but I do not know why the
>> percent of zero-vector  is so high(50% around)
> 
>>> I looked into the ALS.scala, the user and product factors seems to be
>>> initialized by a gaussian distribution, so it should not be all-zero vector,
>>> right?



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