Matthias Geiger

Matthias Geiger
Otto-Friedrich-Universität Bamberg · Department of Applied Computer Sciences

About

17
Publications
3,596
Reads
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199
Citations
Citations since 2017
5 Research Items
160 Citations
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2017201820192020202120222023010203040
2017201820192020202120222023010203040
Additional affiliations
October 2010 - September 2017
Otto-Friedrich-Universität Bamberg
Position
  • Research Assistant

Publications

Publications (17)
Article
The Business Process Model and Notation 2.0 (BPMN) standard has been hailed as a major step in business process modeling and automation. Recently, it has also been accepted as an ISO standard. The expectation is that vendors of business process management systems (BPMS) will switch to the new standard and natively support its execution in process e...
Conference Paper
Full-text available
The Business Process Model and Notation 2.0 is nowadays the de-facto standard for process and workflow modeling. It is supported by many modeling tools and engines which are able to consume and execute processes modeled in the native BPMN 2.0 syntax. Despite its popularity, there are still issues and drawbacks regarding standard compliance of BPMN...
Article
Full-text available
Business process management and automation has been the focus of intense research for a long time. Today, a plethora of process languages for specifying and implementing process models have evolved. Examples for such languages are established international standards, such as BPEL 2.0 or, more recently, BPMN 2.0. Implementations of these standards w...
Conference Paper
Service-oriented systems are increasingly implemented in a process-based fashion. Multiple languages for building process-based systems are available today, but the Business Process Model and Notation (BPMN) is becoming ubiquitous. With BPMN 2.0 released in 2011, execution semantics were introduced, supporting the definition of executable processes...
Conference Paper
Full-text available
Business Process Model and Notation (BPMN) 2.0 process models are used more and more, both in practice as in academia. Although academic research mainly focuses on sophisticated semantic checks and extensions there still exist problems in the basic usage of BPMN. This paper investigates issues in BPMN model serializations which arise as a result of...
Conference Paper
Full-text available
Workflow Management Systems (WfMSs) today act as service composition engines and service-oriented middleware to enable the execution of automated business processes. Automation based on WfMSs promises to enable the model-driven construction of flexible and easily maintainable services with high-performance characteristics. In the past decade, signi...
Chapter
Full-text available
Workflow Management Systems (WfMSs) today act as service composition engines and service-oriented middleware to enable the execution of automated business processes. Automation based on WfMSs promises to enable the model-driven construction of flexible and easily maintainable services with high-performance characteristics. In the past decade, signi...
Conference Paper
Business process management and automation has been the focus of intense research for a long time. Today, a plethora of process languages for specifying and implementing process models have evolved. Examples for such languages are established international standards, such as the Web Services Business Process Execution Language 2.0 or, more recently...
Conference Paper
Today, process languages are frequently used for implementing service-oriented systems and a variety of specifications for this task exist. These specifications strive for the portability of processes among different runtime environments, i.e., process engines. However, direct portability, especially of executable processes, is seldom achieved. If...
Conference Paper
Today, process-aware systems are ubiquitous. They are built by leveraging process languages for both business and implementation perspectives. In the typical context of a Web Services-based Service-oriented Architecture, the obvious choice to implement service orchestrations is still the Business Process Execution Language (BPEL). For BPEL, a varie...
Technical Report
Full-text available
Correct and standard compliant serializations of BPMN process models are crucial for model exchange between tools, automatic application of academic verification approaches and executability on BPMN engines. The official standard document does not provide an extensive set of all constraints regarding the correctness of model serializations. This te...
Conference Paper
Full-text available
Although BPMN 2.0 is an international standard widely used in practice, interoperability of process models is still an issue. Even between tools and engines claiming to be BPMN compliant the model exchange is often complicated or impossible as the tools produce incorrect model representations or do not support the standardized BPMN serialization fo...
Conference Paper
Full-text available
A common problem in applying choreographies and orchestrations is ensuring and enforcing the consistency of the models which is often referred to as "conformance checking". In this position paper, we introduce a concept for checking the conformance of WS-BPEL based orchestrations to ebBP-ST choreographies: First, the ebBP-ST and WS-BPEL models will...
Conference Paper
Full-text available
Web Services technologies are a natural candidate for Business-to-Business integration (B2Bi). For cross-organizational processes, the concepts of "choreography" and "orchestration" are important. The term choreography denotes a model of a global view over message exchange scenarios, whereas the term orchestration focuses on models of the local imp...
Conference Paper
Full-text available
Business-To-Business Integration (B2Bi) is a key mechanism for enterprises to gain competitive advantage. However,developing B2Bi applications is far from trivial. Inter alia,agreement among integration partners about the business documents and the control flow of business document exchanges, applying suitable communication technologies for overcom...

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Projects

Project (1)
Project
n both industry and academia, multiple process languages have emerged, e.g. Windows Workflow (WF), Business Process Model and Notation (BPMN) and Web Services Business Process Execution Language (WS-BPEL). These standards have been implemented in process runtime environments (process engines) by variant sofware vendors and open source communities. All of these process engines have two thing in common: they implement a standard-based process language and are inherently complex in regard to their inner structure, installation procedures and usage in general. This complexity in both standard and implementation aggravates a deliberate selection of such a process engine for a project in industry or academia. For example, there are eight different implementations for WS-BPEL currently available. Within this research project, a comparative framework for process engines in general is developed. This framework is applied to and validated with BPEL as well as BPMN engines. It focuses on the comparison of standard conformance, performance, error detection as well as automation.