Process Mining in the Context of Web Services Prof.dr.ir. Wil van der Aalst Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.

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Presentation transcript:

Process Mining in the Context of Web Services Prof.dr.ir. Wil van der Aalst Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands

Outline Web services monitoring Process Mining Running example Discovery Conformance checking Reality Check Conclusion The work of many people! Thanks to Ton Weijters, Boudewijn van Dongen, Ana Karla Alves de Medeiros, Anne Rozinat, Christian Günter, Eric Verbeek, Ronny Mans, Minseok Song, Laura Maruster, Huub de Beer, Peter van den Brand, Jan Mendling, Andriy Nikolov, Jianmin Wang, Lijie Wen, Irene Vanderfeesten, Mariska Netjes, Steffi Rinderle, Walid Gaaloul, Gianluigi Greco, Antonella Guzzo, etc. etc.

Web Services Monitoring

Setting: Services, composition, and choreography

Example: IBM’s WebSphere Process Server architecture Common event infrastructure (CEI)

Logging events local/global messages/activities Services use BPEL or not, may have a model or not, are known or not, and may deviate from what is expected or not.

Overview Process Mining

Software systems are the mirror image of the “world”

Dual role of process models “verification of models only makes sense if they are an adequate reflection of reality” “realistic models are difficult to verify”

Event logs are a reflection of reality “logs are everywhere and there will be more …”

Process mining: Linking events to models

Toy example to explain basic idea: Reviewing of papers for IPA workshop

Event log: processes –process instances events Per event: activity name (event type) (originator) (timestamp) (data)

start of process instance start of activity end of activity attributes of an event

Discovery

No transactional information

EPC model (SAP,ARIS, etc)

YAWL model (executable workflow model)

Conversions/exports/imports ARIS – ARIS PPM BPEL 1.1 (WebSphere/Oracle) YAWL CPN Tools Petrify Woflan Heuristics nets … link to Eric

about 30 mining plug-ins!

Social network analysis

Decision point analysis builds a decision tree for each choice

Performance analysis

Discovering patterns

Conformance Checking

Comparing the discovered model with the log (f=1)

Adding deviations to the log (f=0.89) link to Anne

LTL checker plug-in

Reality Check

Goal of ProM: Complete support Staffware FLOWer Websphere YAWL ADEPT ARIS PPM/SIM Outlook Caramba SAP PeopleSoft InConcert IBM MQSeries CPN Tools CVS Oracle BPEL UML SD company specific systems... EPC (ARIS, ARIS PPM, EPML,Visio) BPEL (Oracle BPEL, Websphere) YAWL Petri nets (PNML, TPN,...) CPN (CPN Tools) Protos... Netminer... CJIB UWV Rijkswaterstaat ASML AMC hospital Catharina hospital Eindhoven Heusden ING Bank Philips medical systems...

Conclusion Reality is different from models! The existence of event data enables a wide variety of process mining techniques: discovery and conformance. In the context of services there many event logs around! ProM supports this (150 plug-ins) Although quite successful for "structured processes", "spaghetti processes" remain a challenge (two examples were given). Research should aim to address this challenge.

Relevant WWW sites