Re: Holographic XML
Interesting idea ... but I think the terminology is misleading. First off, physical holography (on film() requires 3D not 2D film. The holographic pattern is encoded in a "thickness" of film" and cant be done like normal photography on purely 2D film. That aside, what I think your refering to is making XML represent a "deeper" structure then strictly single rooted trees. I found an incredibly refreshing presentation this year at Balisage on "FML" Freestyle Markup Language. This achieves what your asking for. I wish I had it "now" ... but alas its still in its infancy. http://www.balisage.net/Proceedings/vol5/html/Pondorf01/BalisageVol5-Pondorf01.html -- David A. Lee firstname.lastname@example.org http://www.xmlsh.org On 9/7/2010 11:46 AM, Costello, Roger L. wrote: > Hi Folks, > > Just brainstorming ... > > Consider: > > 1. Holography is where the information about the 3 dimensions is stored in 2 dimensional space. > > 2. I've been told by industry experts that if you're not in the 3-D memory business in four years, you're not going to be in the memory business. > > http://www.eurekalert.org/pub_releases/2010-08/ru-soc083110.php > > Operating in 3 dimensions seems to be something that will be increasingly important. > > XML is kind of a 2 dimensional representation of data. How can XML expand to 3 dimensions? > > ... > > Here are two responses from colleagues: > > ------------------------------------------ > 3-D storage is really only about increasing the size of an array. There's no additional complexity, only increased space organized differently. > > byte  twoD; > byte  threeD; > > Notice that the addressing and storage method are basically the same, but "threeD" is undeniably way bigger. > > This analogy doesn't really carry over to XML. You can't "increase the space" or density of an XML document, because it's already arbitrary according to the user's whim. The only way I can possibly think to carry over the analogy to XML is to increase the "degrees of freedom" in an XML document by abandoning the hierarchy/rooted-tree constraint, and making it possible to represent arbitrary graphs. (After all, trees are only a special case of graphs) We can already do this today with RDF and other XML-serialized graph representations. Notice that unlike 3-D storage, this introduces different semantics, not just another array dimension. Good for some things, not for others. > > David > > ------------------------------------------ > I agree with David. Along the notion of additional "degrees of freedom," check out "Colorful XML: One Hierarchy Isn't Enough" by Jagadish et al.: > > http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.70.9790&rep=rep1&type=pdf > > Peter > > ... > > Ideas? > > /Roger > > > _______________________________________________________________________ > > XML-DEV is a publicly archived, unmoderated list hosted by OASIS > to support XML implementation and development. To minimize > spam in the archives, you must subscribe before posting. > > [Un]Subscribe/change address: http://www.oasis-open.org/mlmanage/ > Or unsubscribe: email@example.com > subscribe: firstname.lastname@example.org > List archive: http://lists.xml.org/archives/xml-dev/ > List Guidelines: http://www.oasis-open.org/maillists/guidelines.php >
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