W3PhotoSpec

From W3C Wiki

The following is the default specification of the *alpha* version of the repository, based on what I've gathered from the emails and my understanding of the decisions.

Feedback encouraged. If possible, identify feedback as: (a) correction for alpha version, (b) open issue, (c) pre-www2004 correction/improvement, (d) post- WWW2004 improvement/extension, (e) brilliant observation and general commentary. Thanks. --GregElin

Document Info

Specification for Alpha version of W3Photo: A Semantic-Photo History of the W3 Conferences

Exec Summary

The initial system will consist of two temporary "official" servers. W3photo.org (Greg Elin) will host the photographs. ???? (Libby Miller) will host RDF annotations. It is assumed with these two servers online, Southhampton can bring up an alpha AKTive Space for the project on a third server within their control. The "front-door" website will be at w3photo.org

We are working only with JPEGs through www2004. We've identified a few links to existing photos online, some with associated RDFs. Everyone is welcome to contribute some photos to give us an initial set of 100+ photos. (It is expected these photos will eventually be contributed under the license, but we will also be prepared to delete them and/or re-contribute them.)

Default vocabularies (ontology definitions) have been drafted. Effort was made for compatibility with existing vocabularies. When faced between defining something abstractly or specifically to the context, I think we've been decided to be specific to this exercise. The drafted vocabs are:

(Photos)

  • vocab for entire image
  • vocab for part/region of image (describing region + what's depicted)

(Conference)

  • vocab for conferences
  • vocab for W3 conference materials, concepts

The proposed Creative Commons license is royalty-free, attribution, non-commercial, and share-alike. People contributing photos will need to provide some identifying information. The proposed privacy policy is to remove photos if a depicted party request removal.

AKTive Space is expected to be the default UI for browsing the repository by the time we get to www2004. A variation of Fotonotes will be the default UI for regions of images. A simple form will generate RDF for the image. (The server code will write data appropriately both into the JPEG via and to the annotation server.) A description of UI issues can be found at http://esw.w3.org/topic/UserInterface

Alpha Specification

Servers

The initial system will consist of two temporary "official" servers. An explanatory front door web site and an alpha set of images will be hosted at http://www.w3photo.org on a server in the US maintained by Greg Elin. RDF annotations for the images will be hosted at http://sw1.ilrt.org/discovery/2004/01/w3photo/ maintained by Libby Miller in the UK.

Other servers, and other applications like Annotea running on these servers, have been discussed. As most of the group has access to their own server resources, everyone is welcome to pursue alternatives on their respective servers with this single request: allow the agreed upon default servers, UIs, and vocabs to lead in the public face of this project as we ramp up towards the conference. We need an organized approach and public face to encourage involvement from others.

With these two servers online, Southhampton can bring up an alpha AKTive Space for the project on a third server within their control. This server will provide the general tools for browsing the repository and linking the images to conferences, and conference concepts.

Seed photos, data

We are working only with JPEGs through www2004. It is fine for vocabularies to be inclusive of multimedia, but we are staying just with JPEGS to start.

Images should be stored in a higher resolution and a web resolution. The primary reference to an image should probably be for the web resolution.

We've identified a few links to existing photos online, some with associated RDFs. Everyone is welcome to contribute some photos to give us an initial set of 100+ photos. (It is expected these photos will eventually be contributed under the license, but we will also be prepared to delete them and/or re-contribute them.)

Because we may want to change a few things in the near future, let's keep this alpha collection smallish.

Default Vocabularies and Namespace

Default vocabularies (ontology definitions) have been drafted. Effort was made for compatibility with existing vocabularies. When faced between defining something abstractly or specifically to the context, I think we've been decided to be specific to this exercise.

Vocabulary for an image:

Vocabulary for conference:

(Discussions around vocabularies were very interesting with active participation from all. Extra thanks to Jennifer Golbeck for putting the generalized conference vocab online; the Southampton team for tackling the hairball of W3 conferences; and Jim Ley, Morten Frederiksen, and Libby Miller for gathering and sorting out the photo vocab discussions; Libby has been a special glue in these discussions and put together example RDF.)

Default Policies

Libby's email summarizing policy discussions put forth four suggestions which seem like a good alpha version of policy:

  1. one license for the core set of photos held on server http://creativecommons.org/licenses/by-nc-sa/1.0/
  2. remove any photos from the core collection that people don't wish to be there, without quibble, as long as either they created the photo or are depicted in it
  3. undertake to correct any errors in the metadata from the core collection, and remove identification of people in the metadata if requested by them
  4. reserve the right to remove photos and metadata from the core collection for any reason (but in practice don't do this unless there's a really good reason)

We are proposing a single license for photos and annotations contributed to any of the "official" servers. The proposed Creative Commons license is royalty-free, requires attribution, limits use to non-commercial, and share-alike. We are putting this forth as an *alpha* license. We need some legal guidance on this (and the privacy policy that follows below). There are open issues here. Please *read* the full legal code before raising any comments on the license.

It is important to note that the "core" collection of images are images that are contributed by others. Since the images accepted into the core agree to the license, which includes attribution, it should be possible for people interested in using the images in ways beyond those described in the license to contact the contributing party directly.

Default User Interface

AKTive Space is expected to be the default UI for browsing the repository by the time we get to www2004. A variation of Fotonotes will be the default UI for regions of images. A simple form will generate RDF for the image. (The server code will write data appropriately both into the JPEG via and to the annotation server.) A description of UI issues can be found at http://esw.w3.org/topic/UserInterface

(I'd like to add some links here...)

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