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Title : Motivation for feed for Presence State
Author(s) : A. Roychowdhury
Filename : draft-roy-simple-presencerss-01.txt
Pages : 17
Date : 2007-7-25
Web feeds (hereby referred to as 'feed') have always played an
important role in providing users content related updates of Websites
without having to visit those websites manually. Typical examples of
feed usage include users 'subscribing' to the feed of a website
(example, CNN.com) and thereby automatically receiving 'news
headlines' when the content changes. Recently, there have been
significant innovations (example [13][12]) where feeds from different
sources have been combined to produce new services in a 'Web Based
Service Creation Environment' model allowing users to create
interesting services building on top of 'primitives' that can be
represented on the Web.
This document describes the motivation for a feed for Presence
information, which the authors believe would be useful to create new
services using a similar environment described above.
NOTE 1: Architecturally, it is also possible that the reverse
situation, i.e. feed converted to a Presence state is also useful,
typically for services that could be triggered at the Presentity
based on certain conditions. However, this document focuses on the
former, i.e. Presence state to feed.
NOTE 2: It is not necessary that each PUA support the capability of
generating feeds. It is possible that a central aggregation server
generates the required feed on behalf of the PUAs.
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