Ubiware2Fingrid

1
P2P as a Discovery Instrument forMulti-Agent
Ubiquitous Middleware
A work-package of the UBIWARE project
Artem Katasonov 22.03.2007
2
UBIWARE

• Goal Interoperability of (industrial) entities
  of different nature

3
UBIWARE (2)
manager
expert
operator
owner
field crew
consumers
administration
USERS
UBIWARE
Production
Services
External Applications
Maintenance
Intelligence
Enterprise portal
Automation
Data Warehouse
4
Motivation for P2P feature
IEEE FIPA agent system model

• An entity called Directory Facilitator (DF)
• Agents register themselves so others can discover
  them.
• In UBIWARE is central because all interactions
  are role-based.
• Effective and efficient, but a bottleneck
• Can render the whole system unusable if it
  failed.
• Duplicating DF?
• Peer-to-Peer?

5
WP Middleware for P2P Discovery

• P2P as a complementary mechanism which can be
  utilized in an exception situation where DF
  became for some reason unavailable.
• System always starts with a DF.
• After some time of operation, big part of DF
  knowledge gets, piece by piece, copied into local
  knowledge storages of different agents on the
  platform.
• Combination of local storages distributed DF.
• Need for P2P mechanism to work with such
  distributed DF.
• Maximum survivability

6
WP objectives

• Develop P2P mechanisms that would enable an
  agent
• To discover agents playing a certain
  organizational role.
• To discover an agent (or agents) possessing
  certain needed information.
• To discover resources (through its agents) of
  certain type or possessing certain properties,
  e.g.
• A device of type X in some state Y.
• A (mobile) web-resource providing some
  information searched for.
• A human of a certain profession

7
WP tasks (as originally planned)

• 1. The Enabling phase
• Study of P2P networks and mobile P2P networks.
  Analysis of basic mechanisms needed for extending
  the UBIWARE platform with P2P resource discovery.
• 2. The Discovery phase
• Design of an effective P2P resource discovery
  infrastructure for UBIWARE, including related
  inter-agent communication protocols.
• 3. The Efficiency phase
• Development of P2P resource discovery algorithms
  increasing the efficiency of the P2P search for
  cases of a very large number of participating
  resources.

8
UBIWARE agent architecture
A P2P algorithm Another P2P algorithm Accessing
personal web-server to make mobile
Google Accessing phone book to make painter
search
Smart Resource Agent
.class
Assign Role
Script-Roles
activity
Live
.class
Beliefs storage
Activity
Activity
Activity
Activity
activity
Reusable atomic behaviors (RABs)

• Componentization
• Extensibility
• Dynamic composition

9
What about

• Instead of searching for / trying to develop a
  killer mobile P2P application,
• to create a generic extensible P2P platform, so
  that the user community will be able to create
  their own applications?