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SUMMARY:Controlling Historical Information Dissemination in Publish/Subscr
 ibe - Jat Singh ( Computer Laboratory\, University of Cambridge)
DTSTART:20081125T150000Z
DTEND:20081125T153000Z
UID:TALK14410@talks.cam.ac.uk
CONTACT:Pedro Brandao
DESCRIPTION:Application environments dealing with sensitive information re
 quire mechanisms to define the circumstances for data disclosure. In event
 -based environments\, access control typically concerns messages(events) a
 s they occur. However\, scenarios exist in which the retrieval of historic
 al information is required. The publish/subscribe\nparadigm decouples prod
 ucers from consumers\, where information from numerous sources can satisfy
  an information request (subscription).\nThese sources may be unknown to s
 ubscribers. This paper describes a unified approach for managing the discl
 osure of both historical and future events. We show\, with the aid of heal
 thcare scenarios\, how\ncontext and access mechanisms can be used for fine
 -grained control over the circumstances for information disclosure.\n\n(Pr
 actice talk for MidSec 2008)
LOCATION:Room FW11\, Computer Laboratory\, William Gates Building
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