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Posted to user@mahout.apache.org by Octavian Covalschi <oc...@gmail.com> on 2011/10/17 17:41:46 UTC
Rescorer example
Hello,
Can anyone please share or point me to an example of Rescorer usage? I've
been googling now for almost 2 hours... so far nothing, just advices to use
it... but no actual examples. Or is that simple that doesn't need examples?
:)
Basically my confusion is how do I get to pass the list of items that have
to be excluded...
Thanks in advance.
PS: I have Mahout in Action also at home, but I don't remember seeing that
there, though I haven't looked too closely.
Re: Rescorer example
Posted by Octavian Covalschi <oc...@gmail.com>.
Yes, thank you. That was exactly what I needed. I managed to look in the
book, however in my case it's page 59th...
Anyway, it looks like it's a matter of having a fast isFiltered() method,
since the approach is to check with DB each time isFiletered is called...
Thanks again!
On Mon, Oct 17, 2011 at 10:46 AM, Sean Owen <sr...@gmail.com> wrote:
> It would probably help if I had given the class name correctly:
> IDRescorer. It's covered in page 79-82 of the book.
>
> It is quite simple, yes. I think the javadoc says about all you'd want
> to know. isFiltered() says whether an item should be excluded.
> rescore() lets you change an estimated pref or return NaN to (also)
> exclude it.
>
> On Mon, Oct 17, 2011 at 4:41 PM, Octavian Covalschi
> <oc...@gmail.com> wrote:
> > Hello,
> >
> > Can anyone please share or point me to an example of Rescorer usage? I've
> > been googling now for almost 2 hours... so far nothing, just advices to
> use
> > it... but no actual examples. Or is that simple that doesn't need
> examples?
> > :)
> >
> > Basically my confusion is how do I get to pass the list of items that
> have
> > to be excluded...
> >
> > Thanks in advance.
> >
> > PS: I have Mahout in Action also at home, but I don't remember seeing
> that
> > there, though I haven't looked too closely.
> >
>
Re: Rescorer example
Posted by Sean Owen <sr...@gmail.com>.
It would probably help if I had given the class name correctly:
IDRescorer. It's covered in page 79-82 of the book.
It is quite simple, yes. I think the javadoc says about all you'd want
to know. isFiltered() says whether an item should be excluded.
rescore() lets you change an estimated pref or return NaN to (also)
exclude it.
On Mon, Oct 17, 2011 at 4:41 PM, Octavian Covalschi
<oc...@gmail.com> wrote:
> Hello,
>
> Can anyone please share or point me to an example of Rescorer usage? I've
> been googling now for almost 2 hours... so far nothing, just advices to use
> it... but no actual examples. Or is that simple that doesn't need examples?
> :)
>
> Basically my confusion is how do I get to pass the list of items that have
> to be excluded...
>
> Thanks in advance.
>
> PS: I have Mahout in Action also at home, but I don't remember seeing that
> there, though I haven't looked too closely.
>