Re: Adding and removing images to/from gift
Wolfgang Müller <[email protected]>
| Newsgroups | gmane.comp.gnu.gift.general |
|---|---|
| Organization | Universität Bamberg |
| Message-ID | <[email protected]> |
> thank you for that resumee. Does this apply to deleting images as well ? Yes. Unless you simply leave them in the collection and use a blacklist of stale inverted file entries. > Currently I still scratch my head about HOW > I merge the "small inverted file" with the big one. Or can I use both > together in conjunction within the same collection ? Recent work suggests that you have a hierarchy of inverted files. Each file smaller by a factor than the previous one. You use them in parallel, i.e. you are running several queries at the same time on different query engines. Then you merge the results. A good approximation of such behavior could be achieved by properly hacking gift-add-collection.pl :-) and properly using the GIFT's elaborate query engine construction mechanism in gift-config.mrml. The missing bit in such an approach would be that the statistics about each feature would not be shared among the huge/large/small/tiny inverted files. This would be not so good for the ranking, but nothing a small hack couldn't cure ;-) . Cheers, Wolfgang -- Dr. Wolfgang Müller LS Medieninformatik Universität Bamberg Check out the SIG MM web site http://www.sigmm.org