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Re: [help-GIFT] GIFT query features
From: |
Jun Jie Foo |
Subject: |
Re: [help-GIFT] GIFT query features |
Date: |
Thu, 4 Aug 2005 10:35:16 +1000 (EST) |
Hi,
> Hi,
> > <mrml ...>
> > ...
> > <configure-session> ...
> > cui-block-color-histogram="true"
> > cui-block-color-blocks="false"
> > cui-block-texture-histogram="true"
> > cui-block-texture-blocks="true"
> > </configure-session>
> > ...
> > </mrml>
> >
> > GIFT will apply only the colour blocks and nothing else?
>
> Yes, but cui-block... are attributes of the algorithm tag (you will see when
> looking closely at the gift-log.mrml). Also make sure, that it really uses
> session and algorithm you want it to use. One way to make sure would be to
> base your algorithm on adefault. Then the maximum score you can achieve is
> 0.25 if you're using one out of four feature groups.
Yup. Thanks for that.
>
> > This'd essentially
> > be equivalent to turning the rest of the image features off had I used a
> > GUI interface. Can I also assume that it'll be the same for the other
> > features?
>
> Yes.
I suspect that what I'm doing above isn't quite the same as disabling the
other features in a GUI interface though.
Here's my xml query using only colour blocks:
<algorithm
algorithm-id="a-cidf"
algorithm-type="adefault"
collection-id="c-37-46-17-21-6-105-4-201-0"
cui-block-color-histogram="true"
cui-block-color-blocks="false"
cui-block-texture-histogram="true"
cui-block-texture-blocks="true"
cui-pr-percentage-of-features="70" >
</algorithm>
Here's the xml query that's generated by GIFT's GUI interface. I disabled
all the features except for colour blocks:
<algorithm
algorithm-id="a-cidf"
algorithm-type="a-cidf"
collection-id="c-37-46-17-21-6-105-4-201-0"
cui-pr-percentage-of-features="70"
cui-block-color-blocks="false"
cui-block-texture-blocks="true"
cui-block-texture-histogram="true"
cui-block-color-histogram="true" >
</algorithm>
With the latter query, the similarity scores exceed 0.25, which tells me that
it's using more than just one out of four features. However, if I changed the
"algorithm-type" to "a-cidf" for the former query, I would then get the the
same similarity scores. Can you please shed some light?
Thanks,
Jun Jie