Re: Adding and removing images to/from gift

Wolfgang MÃŒller schrieb:
> Hi again.
>
> For the details of gift-add-collection.pl I would have to go into the code and 
> currently I can't.
>
>   
>> - After getting a random set, I chose 3 images which i like, requery,
>> select 3 more images gift found I could like. Now there is nothing more
>> I like soi start "deselecting" the other 4 unwanted images, requeryand
>> get 4 new images. But when I requery again, gift brings back the 4
>> images i deselected before. After what I've seen this is not the gifts
>> fault as such, it's more of a workflow problem because gift obviously
>> doesn't know anymore what it server one request before. It would be nice
>> if gift itself could track in the session, which images are queried
>> wanted / unwanted and never show the unwanted in that session again. I
>> think it could improve accuracy.
>>     
>
> Well, we discussed this a lot in /199./ and /200[01]/ and came up with the 
> thought that we rather want to add features like that in the client than in 
> the query processor. 
>
> In fact, from a HCI point of view it seems to be a good idea for the client to 
> make the IR client a gathering space.
>
> Check out 
> http://www.dcs.gla.ac.uk/~jana/research/publications/ECIR2006.pdf
> http://www.dcs.gla.ac.uk/~jana/research/publications.html
>
> Clearly, things like that are far beyond the scope of what image retrieval the 
> server should do (at least IMHO). Having some of this work to be done in the 
> server and some in the client seems like double hassle to me. So you end up 
> doing:
>
>   
>> The way it is currently working I would have to store the users query
>> into a db, send the request to gift, store its answer and remerge
>> something else out of the request I sent and the answer gift gave.
>>     
>
> Which seems not so bad, after all.
>   
Well, it is a web application, so the "client" is not that smart which 
gives me grieve on the application server side of my webapp.
I will feed on the docs anyway and see if I can come with something. 
thanks for the links Wolfgang.

>   
>> - The second thing is matching algorithm. Currently I get the feeling
>> that my gift is fixed on color more than on shape / texture. sometimes I
>> get perfect results ( e.g. gift finding all appropriate matches I know
>> of ) but sometimes it doesn't even show an image it most definitely
>> should be supposed to. How can I tweak my system to try different
>> methods or make it more sensitive for shape / texture than color ?
>>     
>
> I remember having written a document about configuring and hacking the gift, 
> which is surely too short, but maybe a starting point. Have you tried the 
> separate normalisation algorithm or which one did you use when running the 
> GIFT?
>   
I tried both Classical IDF and Separate normalisation but to be honest, 
the results did not differ in the least.