towards consolidated presence

Copyright 2008 Digital Enterprise Research Institute. All rights reserved.

Digital Enterprise Research Institute www.deri.ie

Towards Consolidated Presence

Manfred Hauswirth, Jerome Euzenat, Owen Friel, Keith Griffin, Pat Hession, Brendan Jennings, Tudor Groza,

Siegfried Handschuh, Ivana Podnar Zarko, Axel Polleres and Antoine Zimmermann

CollaborateCom 2010 12 October 2010


Setting up the stage


A Network of Knowledge

Interconnected Universal All encompassing

Enable global and local collaboration

The right information for the right people at the right time


Semantic Reality

People

Physical World

Life

Virtual World

SocialSemanticInformationSpaces

World Wide Web

Sensors


Enterprise environments change!

Web 2.0 / Mash-ups

Sensors

LinkedOpen Data

MobilePhones

Context

BPELBPMN

Semantics

Scale

Commonabstractions

Heterogeneousdata

Heterogeneousplatforms

Time-dependantinformation

Incomplete information

EnterpriseEnvironments

CorporateSocial Network

Hyper-Connectivity

Clouds


A representative example

Prese

nce M

anag

emen

t

7


Communication is essential in today’s enterprise workspaces

Presence Essential block in delivering

communication

Enables status identification and availability

Optimizes communication time => increase productivity, customer satisfaction, etc

Why is presence relevant?

8


Chadwick Martin Bailey (2008)

“On a daily basis 40% of employees are unable to reach co-workers on the first try resulting in more then 20% of their employers experiencing a missed deadline or project delay on a weekly basis.”

Financial relevance

9


Current enterprise IM market Installed subscriber base of over 140M Market size in excess of $200M Expected to grow to over 450M users

and market size of over €500M by 2012 (The Radicati Group, 2009)

Current public/consumer IM market Yahoo, QQ, AIM, GoogleTalk, Skype,

etc: 600M users

Financial relevance

10


Virtual availability

Actual availability

Tight integration of various sources of virtual and physical presence

No single view on presence Actors Policies Access control Trust

Why is it a hard problem?

≠↑ ↓

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Many forms and interpretations Complex understanding Complex reasoning

Heterogeneity of presence information sources IM, Skype, (IP) phone, calendar, Twitter, … GPS, mobile phone, sensors, …

No (limited) heterogeneous frameworks

No (limited) heterogeneous standards (SIP, XMPP, …)

Technical challenges

12


First-class type of service “Internet of Services” applications “Internet of Things” consumption

Open and integrated view of presence

A general concept – extension of the person-associated view

Flexible integration of arbitrary policies Multi-faceted views of presence Privacy and protection of sensitive

information

Consolidated Presence

13


Check availability Ad-hoc – phone: suggest alternative

communication

media, notification to call back, etc Meeting schedulers – future meeting: prediction

of availability of persons Alternatives – finding alternatives for a given task

Resource management Resource location, availability, …

Other Context and action dependent presence Automatic re-scheduling, geo-notes, …

Enterprise use cases

14


IETF SIMPLE: XMPP, SIP

RFC 3856: Presence

“the ability, willingness or desire to communicate across a set of devices”

Current Presence views

15


Entities PUA: Presence User Agent PA: Presence Agent

Subscriptions management + notification

Presence model

Expose presence informationStanding interest in presence info

Facilitates information flow

16


Limited types of person-associated availability

Individual or corporate access policies Not associated to presence Inflexible use to reveal presence No clear and open semantics

Current solutions Custom built-in Hard to integrate Presence not externalized as a service

Current Presence limitations

17


Enables the physical world to play a role in the presence management

Dynamic context Sensor networks E.g.: physical location, activity

Personalized profiles Personal or corporate policies Access control


18


Enables a Watcher to be served a policy-governed, contextualized view on the availability of a Presentity Physical presence Virtual presence Personal policies, governing policies,

etc


19


RFC 3856 + resources and devices

Presence service Management of presence information

Rich presence Physical presence

Sensor technology Semantic presence

Semantic Web and Intranet Search technologies

Unified, service-oriented manner

Enterprise Context

20


Intra-domain federation

Abstraction from presence service heterogeneity

Underlying information models, policy support, storage and processing

Interchange presence information despite underlying protocols, models or policies

Input: Filtering close to the edge of the network

Reduce load Support scalability

Federated Architecture

21


Intra-domain federation


22


Inter-domain federation Openness and extensibility User perspective

Similar to intra-domain federationGoverning policies

Secure and policy controlled information and communication sharingPervasive

Throughout the enterprise At the boundaries between the enterprise and external

enterprises or consumer spaces


23


Inter-domain federation


24


Information integration Virtual, physical and social presence People, objects and software entities

Powerful and flexible semantic techniques Low-level stream processing, sensor

middleware and publish/subscribe systems

Enterprise policy management Fine-grained control of sharing presence

information Within single or across multiple enterprises

Requirements

25


Raw presence Data acquisition middleware for

personal devices Publish/subscribe middleware

Digested presence Semantic description of context

models and policies Policy analysis and negotiation

Development directions

26


Data acquisition middleware for personal devices Integrate broad range of physical

and virtual information sources

Support for mobile devices to enable ad-hoc collaboration

Extensible and adaptive filtering


27


Publish/subscribe middleware Content-based solutions

Integrate fast and efficient matching algorithms

Fine-grained filtering of presence information

Distributed solutions with efficient routing algorithmsMinimize the generated trafficSupport mobility across various networks,

devices and access points Integrate policy-driven

publish/subscribe matching and routing


28


Semantic description of contextmodels and policies Semantic Web technologies

Expressive and open knowledge representation languages

Dynamic extension of knowledge descriptions

OWL – Web Ontology LanguageStandard vocabulariesAxioms governing presence, location,

availability, profiles and policiesOPO, Geo, GeoNames, PIMO, …


29


Policy analysis and negotiation

Policy-based management of communication in federations of enterprises

Consistency checking between enterprise’s own policies and the policies agreed with other enterprises


30


Consolidated Presence Combined presence context from both

virtualand physical sources

Enforcement of personal and organizational policies

Scenarios Requirements Technology roadmap

Sensor technology Content-based publish/subscribe

middleware Semantic description of context models

Conclusion

31


Consolidated Presence Combined presence context from both

virtual

and physical sources Enforcement of personal and

organizational policies

Conclusion

Thank you!Contact: Manfred Hauswirth, DERI Galway

([email protected])

towards consolidated presence

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