[ESDS] Proposed Charter - 2nd update

[Ali Rezafard <[e-mail]>]

Dear ESDS members,

Below is our updated charter. Please review and comment by September  
19th. Silence will be interpreted as consensus from the group.

Best Regards,
Ali Rezafard

ESDS Charter:

ESDS has been chartered to architect and define a protocol for  
Discovery Services. Discovery Services at its core offers to  
authenticated and authorized users the means to discover sources of  
information for a particular object. Discovery Services can be  
implemented as a decentralized directory of resources indexed by a  
shared identifier. The scope of Discovery Service is confined to only  
providing referral data to source of information. Discovery Services  
need to be deployable in both closed networks as well as open and  
global networks such as Internet.

ESDS will develop interfaces for users of Discovery Services as well  
as an interface for peer-to-peer communication among Discovery  
Services. ESDS will develop interfaces for publishing data, submitting  
one-time queries, and registering for standing queries.  ESDS should  
support utilization of a trusted external identity management service  
for Authentication. ESDS should enable configuration of Authorization  
and Access Control for publishing clients to provide control over the  
reference data in Discovery Service.

One of the applications motivating the development and standardization  
of Discovery Services is the increasing use of automatic  
identification technologies (in particular Radio Frequency  
Identification (RFID) ) to capture observations of tagged physical  
objects within the premises of a company and also as they pass from  
one company to another, in a supply chain or supply network.

However, Discovery Services have a potentially wider generic  
applicability, as a bottom-up mechanism for constructing indices and  
referral systems for information about particular topics or keywords,  
particularly when the contributed information is distributed across  
multiple nodes on the internet and in particular, where the  
contributed information (and the metadata that enables its discovery)  
is not intended to be available to everyone or is not ordinarily  
discoverable by public web search engines that perform automated  
crawling and indexing of publicly accessible content.
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