- From: Christine Perey <cperey@perey.com>
- Date: Thu, 11 Nov 2010 06:14:26 +0100
- To: Alex Hill <ahill@gatech.edu>
- CC: Mike Liebhold <mnl@well.com>, public-poiwg@w3.org
Earlier this week I attended an invited talk given by an anthropologist, Dr, John Haviland of UCSD [1] He began with a quick tutorial about Linguistic Frames of Reference (FoR) which seems extremely appropriate in this discussion. In a nutshell languages differ in the frames of reference used for describing spatial locations. Three distinct frames of reference have been identified: intrinsic, absolute and relative In case you are not a cognitive scientist and want to get the short definitions before using one or more of these FoR's, please visit [2] or [3]. This might be valuable [4] Christine Spime Wrangler cperey@perey.com mobile (until Dec 7) +86 132 6171 6195 VoIP (rings in Beijing) +1 (617) 848-8159 Skype Christine_Perey [1] http://www.anthro.ucsd.edu/~jhaviland/ [2] http://en.wikipedia.org/wiki/Linguistic_frame_of_reference [3] http://download.cell.com/trends/cognitive-sciences/pdf/PIIS1364661302019629.pdf [4] http://www.cogsci.northwestern.edu/cogsci2004/papers/paper254.pdf On 11/10/2010 4:22 PM, Alex Hill wrote: > It seems to me that we could divorce the definition of a "location" from > the sort of technology that supports it. > In the future, everything will be tracked by some means (I am already > being tracked at a coarse level; credit card receipts, GPS, etc.). > Whether it is the device recognizing the item, partially recognizing the > item and using a database to improve accuracy, or a direct signal > indicating its location, it is still a "thing" that needs some sort of URI. > And since it is a part of the physical world, it can be the "location" > for a POI. > This is why I would lean towards incorporating "thing" into "location" > if possible. > Here is an example use-case: > My device sees a rock. I decide it is a POI and attach some data to it. > The "world" or "cyberspace" may know nothing about it, yet. > Yes, it may conveniently be big and difficult to move. Therefore it's > "location" description is quite simple. > However, if it is small enough to be moved, its "location" description > gets more complex. > If a sensor has been affixed, then tracking its location becomes > straightforward. > However, if only the information the URI includes is what my device saw > then the "location" of this item is intermittent, perhaps "unknown", for > periods of time. > There will certainly be services that use a combination of credit card > receipts, last GPS location and face recognition to give a device my > "location". > Seems we need to decide early on if we want to capture this in the POI > standard. > > On Nov 10, 2010, at 9:51 AM, Mike Liebhold wrote: > >> Here's draft definition of 'thing' >> >> A ' thing is a physical object with no fixed location that may have a >> POI digital information attached that cannot be automatically detected >> by geopositioning sensors. The POI,therefore will only be detectable >> by a default visual ( or acoustic?) search, invoked by a client. >> >> *** >> Question: Does this require a default registry of visual or acoustic >> search services that can decode the visual ( or acoustic?) pattern to >> point the client to the appropriate URI that explains the POI format? >> >> > > Alex Hill Ph.D. > Postdoctoral Fellow > Augmented Environments Laboratory > Georgia Institute of Technology > http://www.augmentedenvironments.org/lab >
Received on Thursday, 11 November 2010 05:14:54 UTC