1. Supporting Cross-Organizational Process Control
Samuil Angelov, Jochem Vonk, Paul Grefen
Eindhoven University of Technology, NL
Krishnamurthy Vidyasankar
Memorial University of Newfoundland, CA

2. Agenda Introduction Example Interference Options (activities)
Overview
Mapping
Complex Interference Options
Extended Interference
Process
Segments
Conclusions
Pro-VE 2009

3. Introduction Collaborative Networks (Instant) Virtual Enterprise
Highly dynamic & complex business relations
Process intensive
Governed by electronic contracts
(Instant)
Virtual Enterprise
Execution ('connecting' business processes)
Monitoring (progress of execution)
Control (interfere in execution)
Pro-VE 2009

4. Healthcare Business Network
Example Scenario
Healthcare: Teleradiology
Acquisition and Interpretation of medical scans (MRI, CT, X-Ray, etc.)
Problems:
Staff shortage
Expensive Resources
Increasing demand
Healthcare Business Network
Patient Treatment
Hospital
Scan Acquisition
Radiology Clinic
Scan Interpretation
Radiologist
Pro-VE 2009

5. Interference Options Group 1 (before activity starts)
Delay / Proceed
Skip
Group 2 (during activity execution)
Pause / Continue
Cancel
Part-Reset
Part-Undo
Group 3 (after activity execution)
Reset
Undo
Pro-VE 2009

6. 3LFW – Three Level Framework
Business Processes
External Level / Public view
Extension: hierarchical
Conceptual Level / Private view
Internal Level / Private view
Service Consumer
External Process
Project
Service Provider
Conceptual Process
Internal Process
Map
Pro-VE 2009

7. Example Control in Teleradiology
Service Consumer
External Level
Scan Acquisition
Schedule CT
Elaboration
Distribution
Finance & Warp up
Prep. Patient
Acq. MRI
Acq. CT
Acq. X-Ray
MRI
Scan Interpretation
Create Report
Billing BI
X-Ray
Service Provider
Conceptual Level
Schedule
Notify & Distr
Internal Level …
Pro-VE 2009

8. State Transition Models
External Level
Internal Level (most basic)
Pro-VE 2009

9. Mapping Mapping required for each Interference Option
Wait states ('pause' and 'interaction time')
Workflow patterns
Example: Retry (Xi) Xi
External Level
Internal Level …
Ci1
Cin
wait
Pro-VE 2009

10. Parallelism Pause(Xi) External Level Internal Level Pause Cut 1
wait
wait
wait
wait
Pro-VE 2009

11. Mapping Example Scenario
Pro-VE 2009

12. Complex Interference Options
Combination of two basic I-Options
Analysis using matrix
11 basic I-options -> 121 possible complex I-options
92 impossible
14 senseless
15 usable
Postpone
Redo
Part-Redo
Launch
Abolish
Part-Reset-Rethink
Defer
Terminate
Part-Undo-Rethink
Restart
Null
Reset-Rethink
Retry
Nullify
Undo-Rethink
Pro-VE 2009

13. Process and Segment Interference Options
Aggregation of activities to a single external activity
Segment
Set of activities with control flow (branch in process)
Pro-VE 2009

14. Prototype Implementation
Based on Business Process Web Service (BPWS)
Additional standard interfaces for WS
ACT
SPEC
MON
CTRL
SYNC
BPEL Spec.
SPEC
ACT
BP Engine
CTRL
MON
SYNC Acts
SYNC
Pro-VE 2009

15. Conclusions Interference Options Specified in e-Contracts (SLA)
Additional flexibility for service consumer
Additional distinction mechanism for service provider
Specified in e-Contracts (SLA)
Needs verification mechanism
For correct execution
For correct semantics
Pro-VE 2009

16. Questions ?
Pro-VE 2009

17. Pro-VE 2009 Second Group 1 Group 2 Group 3 First Delay Proceed Start
Group 2
Group 3
First
Delay
Proceed
Start
Skip
Pause
Continue
Cancel
Part-Reset
Part-Undo
Reset
Undo x
Postpone (Delay->Proceed) needs explicit condition
senseless
Launch (Proceed->Start)
Defer (Pause->Continue) needs explicit condition
Part-Reset-Rethink (Part-Reset->Delay)
Restart (Part-Reset->Start)
Abolish (Part-Reset->Skip)
Part-Undo-Rethink (Part-Undo->Delay)
Part-Redo (Part-Undo->Start)
Terminate (Undo->Skip)
Reset-Rethink (Reset->Delay)
Retry (Reset->Start)
Null (Reset->Skip)
Undo-Rethink (Undo->Delay)
Redo (Undo->Start)
Nullify (Undo->Skip)
Pro-VE 2009