- KonferenzbeitragTowards automated financial process auditing: aggregation and visualization of process models(Enterprise modelling and information systems architectures (EMISA 2011), 2011) Mueller-Wickop, Niels; Schultz, Martin; Gehrke, Nick; Nüttgens, Markus; Nüttgens, Markus; Thomas, Oliver; Weber, BarbaraInternal and external auditors face an enormous amount of financial entries in accounting information systems. For many reasons - like legal regulations - a process-oriented view of these entries is urgently needed in order to understand the way financial entries are produced in accounting information systems and to infer the underlying processes. Traditional modeling languages focus on processes but pay no regard to the financial value-flows. Furthermore, automated process retrieval approaches only reconstruct single process instances, which need to be aggregated for reasons of comprehensibility, simplification and clearness. The paper wants to close this gap and integrate the process with the accounting perspective followed by an aggregation of single process instances. As a result we present a visualization form capable of integrating the financial view with process flows. In this way, auditors are able to trace how balance sheet items have been produced in the system during the fiscal year.
- KonferenzbeitragTowards process-oriented information logistics: why quality dimensions of process information matter(Enterprise modelling and information systems architectures (EMISA 2011), 2011) Michelberger, Bernd; Mutschler, Bela; Reichert, Manfred; Nüttgens, Markus; Thomas, Oliver; Weber, BarbaraAn increasing data overload makes it difficult to deliver needed information to knowledge-workers and decision-makers in process-oriented enterprises. The main problem is to identify information being relevant for process participants and their activities. To cope with this challenge, enterprises crave for an intelligent and processoriented information logistics. The major challenge is to provide the right process information in the right format and level of granularity at the right place and accurate point in time to the right actors. When realizing such process-oriented information logistics it becomes crucial to take into account quality dimensions of process information (e.g., completeness, topicality, punctuality). Reason is that these dimensions determine process information quality and thus also the overall relevance of process information for a particular process participant and his activities. This paper picks up this issue and analyzes different quality dimensions of process information and their impact on process-oriented information logistics.
- KonferenzbeitragIntegration of process constraints from heterogeneous sources in process-aware information systems(Enterprise modelling and information systems architectures (EMISA 2011), 2011) Rinderle-Ma, Stefanie; Mangler, Juergen; Nüttgens, Markus; Thomas, Oliver; Weber, BarbaraBusiness Process Compliance (BPC) has gained significant momentum in research and practice during the last years. Although many approaches address BPC, they mostly assume the existence of some kind of unified base of process constraints and focus on their verification over the business processes. However, it remains unclear how such an integrated process constraint base can be built up, particularly at the presence of process constraints stemming from heterogeneous sources such as internal controls, external contracts, or security and privacy policies. Hence in this paper, we propose a representation framework for the integration of process constraints stemming from different sources. The representation framework is generic such that existing formalisms to represent process constraints can be integrated. The framework is illustrated by means of real-world process constraints from different domains and heterogeneous sources. Altogether process constraint integration enables consistency checks and optimizations as well as maintenance and evolution of the constraint base.
- KonferenzbeitragWorkflow nets with roles(Enterprise modelling and information systems architectures (EMISA 2011), 2011) Bergenthum, Robin; Desel, Jörg; Mauser, Sebastian; Nüttgens, Markus; Thomas, Oliver; Weber, BarbaraWe formalize the usual static role concept for workflow nets, introduce dynamic roles and define soundness as well as a second correctness criterion, called consistency, for workflow nets with roles. We study the relation between the notions of consistency and soundness of workflow nets with and without roles. In particular, we show that a sound workflow net extended by consistent roles is again sound.
- KonferenzbeitragFast pattern matching in conceptual models – evaluating and extending a generic approach(Enterprise modelling and information systems architectures (EMISA 2011), 2011) Dietrich, Hanns-Alexander; Steinhorst, Matthias; Becker, Jörg; Delfmann, Patrick; Nüttgens, Markus; Thomas, Oliver; Weber, BarbaraIdentifying structural patterns in conceptual models serves a variety of purposes ranging from model comparison to model integration and exploration. Although there are a multitude of different approaches for particular modelling languages and application scenarios, the modelling community lacks an integrated approach suitable for conceptual models of arbitrary languages and domains. Therefore, a generic set-theory based pattern matching approach has recently been developed. To prove that this approach is beneficial in terms of performance, we conduct a statistically rigorous analysis of its runtime behaviour. We augment the original approach to include a caching mechanism that further increases performance. We are able to show that the original algorithm is able to identify arbitrary patterns within milliseconds. The caching extension further increases performance by up to fifty per cent given the model base and patterns we used.
- KonferenzbeitragSome guidelines for the conception of domain-specific modelling languages(Enterprise modelling and information systems architectures (EMISA 2011), 2011) Frank, Ulrich; Nüttgens, Markus; Thomas, Oliver; Weber, BarbaraWhile the potential prospects of domain-specific modelling languages (DSML) are undisputed, the design of a DSML faces specific challenges that have raised only little attention so far. They relate to the boundaries between a DSML and corresponding models as well as to the question how specific a DSML should be. Addressing these challenges does not only contribute to the development of meta modelling methods, it also relates to judging the economics of a DSML. This paper suggests guidelines to support typical decisions that occur with the design of a DSML. They mainly concern the level of abstraction a potential language concept should be defined on. The guidelines are not intended to serve as recipes for design, but rather to improve the transparency of design decisions.
- KonferenzbeitragApplying soft systems methodology in enterprise architecture creation workshops(Enterprise modelling and information systems architectures (EMISA 2011), 2011) Nakakawa, Agnes; Bommel, Patrick van; Proper, Erik; Nüttgens, Markus; Thomas, Oliver; Weber, BarbaraLack of effective involvement of stakeholders is one of the main drawbacks of enterprise architecture initiatives. Ongoing attempts to overcome this involve using Collaboration Engineering to develop a collaboration process that enterprise architects can execute to facilitate collaborative sessions with stakeholders during architecture creation. However, a field study evaluation of this process revealed that it offered inadequate support for stirring vigorous and rigorous discussions during activities that required organizing and assessing problem or solution aspects that resulted from brainstorming activities. Since Soft Systems Methodology (SSM) helps to structure rational thinking about messy situations, its techniques can be adapted to supplement the design of the collaboration process with support for triggering discussions and creating a shared understanding and vision among stakeholders. This paper therefore presents a script that shows how this can be done, and discusses its evaluation in a real case.
- Editiertes BuchEnterprise modelling and information systems architectures (EMISA 2011)(2011) Nüttgens, Markus; Thomas, Oliver; Weber, Barbara
- KonferenzbeitragIntroducing a co-creation perspective to service business models(Enterprise modelling and information systems architectures (EMISA 2011), 2011) Zolnowski, Andreas; Semmann, Martin; Böhmann, Tilo; Nüttgens, Markus; Thomas, Oliver; Weber, BarbaraDue to the growing importance of services for many companies and the resulting transformation of product based business models to service based business models, the paper focuses on the link between business models and services. For this purpose the business model canvas of Osterwalder is adapted to address the shortcoming relating to co-creation of extant business models.
- KonferenzbeitragModeling choreographies: BPMN 2.0 versus BPEL-based approaches(Enterprise modelling and information systems architectures (EMISA 2011), 2011) Kopp, Oliver; Leymann, Frank; Wagner, Sebastian; Nüttgens, Markus; Thomas, Oliver; Weber, BarbaraChoreographies capture the collaboration aspects between two or more processes. Explicit choreography notations have been included in the upcoming version 2.0 of the Business Process Model and Notation language (BPMN 2.0). This paper presents a first evaluation of the choreography modeling capabilities of BPMN 2.0 and presents a summary of the evaluation of BPEL-based approaches. The result is that BPMN 2.0 does not support reference passing and is tightly tied to technical configurations.