;
>
>
> *From:* Nick Pentreath
> *Sent:* Wednesday, June 26, 2019 9:09 AM
> *To:* user@spark.apache.org
> *Subject:* Re: [EXTERNAL] - Re: Problem with the ML ALS algorithm
>
>
>
> If the number of items is indeed 4, then another issue is the rank of the
> factors def
From: Nick Pentreath
Sent: Wednesday, June 26, 2019 9:09 AM
To: user@spark.apache.org
Subject: Re: [EXTERNAL] - Re: Problem with the ML ALS algorithm
If the number of items is indeed 4, then another issue is the rank of the
factors defaults to 10. Setting the "rank" parameter <
; Number of items is 4
>
> Ratings values are either 120, 20, 0
>
>
>
>
>
> *From:* Nick Pentreath
> *Sent:* Wednesday, June 26, 2019 6:03 AM
> *To:* user@spark.apache.org
> *Subject:* [EXTERNAL] - Re: Problem with the ML ALS algorithm
>
>
>
> This means that
Number of users is 1055
Number of items is 4
Ratings values are either 120, 20, 0
From: Nick Pentreath
Sent: Wednesday, June 26, 2019 6:03 AM
To: user@spark.apache.org
Subject: [EXTERNAL] - Re: Problem with the ML ALS algorithm
This means that the matrix that ALS is trying to factor is not
This means that the matrix that ALS is trying to factor is not positive
definite. Try increasing regParam (try 0.1, 1.0 for example).
What does the data look like? e.g. number of users, number of items, number
of ratings, etc?
On Wed, Jun 26, 2019 at 12:06 AM Steve Pruitt wrote:
> I get an inex
