Stefan Jablonski

Stefan Jablonski
University of Bayreuth · Institute for Computer Science

PhD

About

282
Publications
30,695
Reads
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3,593
Citations
Additional affiliations
January 2006 - present
University of Bayreuth
Position
  • Head of chair
October 1994 - December 2005
Friedrich-Alexander-University of Erlangen-Nürnberg
Position
  • Professor (Full)
October 1994 - December 2005
Friedrich-Alexander-University of Erlangen-Nürnberg
Position
  • Professor (Full)

Publications

Publications (282)
Conference Paper
Business process modeling is an established method to describe workflows in enterprises. The resulting models contain tasks that are executed by process participants. If the descriptions of such tasks are too abstract or do not contain all relevant details of a business process, deviating process executions may be observed. This leads to reduced pr...
Chapter
Declarative process modelling languages like Declare focus on describing a process by restrictions over the behaviour, which must be satisified throughout process execution. Although this paradigm allows more flexibility, it has been shown that such models are often hard to read and understand, which affects their modelling, execution and maintenan...
Article
Full-text available
Declarative process modelling languages focus on describing a process by restrictions over the behaviour, which must be satisfied throughout the whole process execution. Hence, they are well-suited for modelling knowledge-intensive processes with many decision points. However, such models can be hard to read and understand, which affect the modelli...
Chapter
Predictive business process monitoring is concerned with the prediction how a running process instance will unfold up to its completion at runtime. Most of the proposed approaches rely on a wide number of machine learning techniques. In the last years numerous studies revealed that these methods can be successfully applied for different prediction...
Chapter
Situation faced: Because of increasing automation and staff reduction, fewer operators are available to control a corrugated paper production line. Hence, users must go to several locations to access the available control panels, resulting in delayed information flows. These delayed reaction times are frequently the reason for increased numbers of...
Chapter
Situation faced: Many companies must handle unplanned events like delayed shipments, changing customer requests, and machine breakdowns. N-DECT, a medium-sized company that offers customer-specific solutions for material testing and processes many customer orders simultaneously, is no exception. The challenge of such agile business processes is tha...
Chapter
In predictive business process monitoring current and historical process data from event logs is used to predict the evolvement of running process instances. A wide number of machine learning approaches, especially different types of artificial neural networks, are successfully applied for this task. Nevertheless, experimental studies revealed that...
Chapter
Business process management encompasses a variety of tasks that can be solved system-aided but usually require formal process representations, i.e. process models. However, it requires a significant effort to learn a formal process modeling language like, for instance, BPMN. Among others, this is one reason why companies often still stick to inform...
Conference Paper
In predictive business process monitoring current and historical process data from event logs is used to predict the evolvement of running process instances up to their completion. A wide number of machine learning approaches, especially different types of artificial neural networks, are successfully applied for this task. Nevertheless, experimenta...
Chapter
Nowadays, business process management is getting more and more important. A wide variety of process modeling languages is available. Hence one of the most complicated tasks of entrepreneurs is to choose the modeling language which suits their respective problems and purposes best. Each of the modeling languages has its own advantages and disadvanta...
Chapter
Business process modeling is an established method to improve business procedures and to provide more insights into internal workflows. Once the process is visualized in a business process model, future process executions correspond to the workflow prescribed by the process model. Process details like input specifications or the order of internal s...
Preprint
Full-text available
Predictive business process monitoring is concerned with the prediction how a running process instance will unfold up to its completion at runtime. Most of the proposed approaches rely on a wide number of different machine learning (ML) techniques. In the last years numerous comparative studies, reviews, and benchmarks of such approaches where publ...
Article
Full-text available
Business processes are frequently executed within application systems that involve humans, computer systems as well as objects of the Internet of Things (IoT). Nevertheless, the usage of IoT technology for system supported process execution is still constrained by the absence of a common system architecture that manages the communication between bo...
Chapter
Companies deploy workflow management systems which interpret process models to ensure compliance of operational duties by automatically distribute work items to employees or machinery. Enterprises are often forced to outsource services and join interorganizational collaborations, e.g. in supply chain scenarios, to remain competitive on the market....
Article
Context: Tool support for business process management (BPM) is improving more and more. Often, machine learning techniques are used to recognize certain execution patterns, to optimize workflows and to observe or predict processes. Frequently, many organisations cannot meet the fundamental prerequisites of machine learning methods since less data i...
Chapter
Declarative process models consist of temporal constraints that a process must satisfy during execution. Constraint templates are patterns that define parameterized classes of properties. Their semantics can be formalized using formal logics such as Linear Temporal Logic (LTL) over finite traces. There exists a big amount of different constraint te...
Article
Full-text available
Business Process Management provides concepts for enterprises to design, document and execute their business processes. Involved artefacts establish the basis for a profound enhancement of processes, like performance improvements or a substantiate assignment of employees (resources) to tasks. These artefacts comprise process models for documentatio...
Article
Durch die Möglichkeiten, die mit der digitalen Transformation einhergehen, lässt sich die Produktionsplanung und -steuerung unterstützen. Dabei ermöglichen Prozessführungs-, Prozessüberwachungs-, sowie Analysedaten auf Basis von Internet of Things (IoT)-Anwendungen eine umfassende Sicht auf Abläufe in der Produktion. In diesem Artikel wird ein Ansa...
Chapter
Interorganizational process management bears an enormous potential for improving the collaboration among associated business partners. A major restriction is the need for a trusted third party implementing the process across the participating actors. Blockchain technology can dissolve this lack of trust due to consensus mechanisms. After the rise o...
Conference Paper
A Process-Aware Information System is a system that executes processes involving people, applications, and data on the basis of process models. At least two process modeling paradigms can be distinguished: procedural models prescribe exactly the execution order of process steps. Declarative process models allow flexible process executions that are...
Chapter
A Process-Aware Information System is a system that executes processes involving people, applications, and data on the basis of process models. At least two process modeling paradigms can be distinguished: procedural models define exactly the execution order of process steps. Declarative process models allow flexible process executions that are res...
Chapter
The Internet of Things (IoT) is the inter-networking of physical objects like electronic hardware or humans using wearable digital devices. IoT allows things to be controlled remotely across existing network infrastructures. A business process is a collection of related events, activities, and decisions that involves a number of resources. To suppo...
Conference Paper
Full-text available
Business processes are frequently executed within application systems that involve humans, computer systems as well as objects of the Internet of Things (IoT). While several works are emerging on combining BPM and the IoT, the exploitation of IoT technology for system supported process execution is still constrained by the absence of a common syste...
Conference Paper
The Internet of Things (IoT) is the inter-networking of physical objects like electronic hardware or humans using wearable digital devices. IoT allows things to be controlled remotely across existing network infrastructures. A business process is a collection of related events, activities, and decisions that involves a number of resources. To suppo...
Article
Full-text available
Process mining aims at discovering processes by extracting knowledge about their different perspectives from event logs. The resource perspective (or organisational perspective) deals, among others, with the assignment of resources to process activities. Mining in relation to this perspective aims to extract rules on resource assignments for the pr...
Conference Paper
A manufacturing information system is targeted for use anywhere production is taking place. Modern manufacturing information systems are generally computerized and are designed to collect and present the data which production operators need in order to plan and direct operations within the production. The application of mobile and wearable devices...
Conference Paper
Full-text available
The Declarative Process Intermediate Language (DPIL) is a declarative process modelling language that allows for specifying multiperspective and multi-modal flexible, processes. The DPIL Framework provides a tool set for supporting flexible and multi-perspective business processes based on the language DPIL. The DPIL Navigator 2.0 depicts a declara...
Conference Paper
When enterprises are determined to introduce process management, they usually aim at IT system supported execution of processes. In constrast to this common tendency of process technology, we provide a straightforward, quickly viable alternative to IT-based process support at a reasonable effort: the Process Checklist. The paper-based scheme we int...
Article
Full-text available
When enterprises are determined to introduce process management, they usually aim at IT system supported execution of processes by Workflow Management Systems (WfMSs) or Process-aware Information Systems. In constrast to this common tendency of process technology, we introduce a paper-based scheme to enact and execute human-driven processes in the...
Article
Full-text available
Process mining aims at discovering processes by extracting knowledge from event logs. Such knowledge may refer to different business process perspectives. The organisational perspective deals, among other things, with the assignment of human resources to process activities. Information about the resources that are involved in process activities can...
Conference Paper
Flexible business processes can often be modelled more easily using a declarative process modeling language (DPML) rather than an imperative language. Process mining aims at automating the discovery of process models. One way to evaluate process mining techniques is to synthesize event logs from a source model via simulation techniques and to compa...
Conference Paper
Imperative languages like BPMN are eminently suitable for representing routine processes and are likewise cumbersome in case of flexible processes. The latter are easier to describe using declarative process modeling languages (DPMLs). However, understandability and tool support of DPMLs are comparatively poor. Additionally, there may be an affnity...
Article
Process mining aims at discovering processes by extracting knowledge from event logs. Such knowledge may refer to different business process perspectives. The organisational perspective deals, among other things, with the assignment of human resources to process activities. Information about the resources that are involved in process activities can...
Conference Paper
Full-text available
Flexible business processes can often be modelled more easily using a declarative rather than a procedural modelling approach. Process mining aims at automating the discovery of business process models. Existing declarative process mining approaches either suffer from performance issues with real-life event logs or limit their expressiveness to a s...
Conference Paper
Full-text available
Process modeling is usually done using imperative modeling languages like BPMN or EPCs. In order to cope with the complexity of human-centric and flexible business processes several declarative process modeling languages (DPMLs) have been developed during the last years. DPMLs allow for the speci�cation of constraints that restrict execution flows....
Article
Process modeling is usually done using imperative modeling languages like BPMN or EPCs. In order to cope with the complexity of human-centric and flexible business processes several declarative process modeling languages (DPMLs) have been developed during the last years. DPMLs allow for the specification of constraints that restrict execution flows...
Article
In recent years, process models tend to turn away from common procedural models to more flexible, rule-based models. These models are characterized by the fact that in each execution step users usually have to decide between several rule-consistent tasks to perform next. Precise execution paths are not given, which is why adequate execution support...
Conference Paper
A great number of related work points out the need for similarity detection between process models, be it the management of process model repositories, compliance checking, the reuse of model parts, etc. [BL12]. Among the different aspects of process models used for measuring similarity, behavior is an important part. [BBJ15] introduces a behaviora...
Conference Paper
Prozesse in Organisationen lassen sich grundsätzlich in zwei Klassen unterteilen: Strikte Routineprozesse und flexible Prozesse mit einem sich dynamisch entwickelnden, variablen Kontrollfluss. Aufgrund der unterschiedlichen Natur strikter und flexibler Prozesse entstanden auch zwei verschiedene Klassen von Prozessmodellierungssprachen: imperative u...
Conference Paper
In recent years, process models tend to turn away from common procedural models to more flexible, rule-based models. The models are characterized by the fact that in each execution step users usually have to decide between several rule-consistent tasks to perform next. Precise execution paths are not given, which is why adequate execution support n...
Conference Paper
As business process models have a broad scope of applications, e.g., in science or in business administration, the problem of handling large amounts of process models arises. One helpful tool for dealing with this amount of models is to reduce it by using similarity measures in order to detect similar models that can be merged. A set of similar mod...
Conference Paper
Full-text available
The spectrum of business processes can be divided into two types: well-structured routine processes and agile processes with control flow that evolves at run time. In a similar way, two different representational paradigms can be distinguished: procedural models and declarative models which define rules that a process has to satisfy. Agile processe...
Conference Paper
Two different types of processes can be distinguished: well-structured routine processes and agile processes where the control-flow cannot be predefined a priori. In a similar way, two modeling paradigms exist whereby procedural models are more adequate for routine processes and declarative models are more suitable for agile processes. Often busine...
Conference Paper
Full-text available
Agile processes depend on human resources, decisions and expert knowledge, and they are especially versatile and comprise rather complex scenarios. Declarative, i.e., rule-based, process models are wellsuited for modelling these processes. Although there are several mining techniques to discover such declarative process models from event logs, they...
Conference Paper
Full-text available
Agile processes depend on human resources, decisions and expert knowledge and are especially versatile and comprise rather complex coherencies. Rule-based process models are well-suited for modelling these processes. There exist a number of process mining approaches to discover rule-based process models from event logs. However, existing rule-based...
Conference Paper
As business process models are widely used and essential for most organizations, the problem of multiple modeled processes rises. This can happen if a process is modeled by different modelers or if or- ganizations merge. In order to cope with this issue, typically process model similarity matching methods are used. Thereby, pure textual 1:1- matchi...
Conference Paper
The spectrum of an organization’s business processes ranges from routine processes with a well-defined flow to agile processes with a degree of uncertainty. The Process Navigation platform aims at supporting both types of processes as well as combinations of them. It offers execution support for traditional flow-oriented notations like BPMN as they...
Article
Die Möglichkeiten der Verwendung von Prozessmodellen zur Unterstützung von Arbeitsabläufen sind vielfältig. Das Spektrum reicht von der Bereitstellung von Informationen, der Überwachung, Steuerung und Kontrolle von Aktivitäten bis hin zur Assistenz und Planung. Eine zunehmende Prozessunterstützung ist jedoch nicht automatisch mit einer Prozessverbe...
Conference Paper
Organizations increasingly determine process models to support documentation and redesign of work flows. In various situations correspondences between activities of different process models have to be found. The challenge is to find a similarity measure to identify similar activities in different process models. Current matching techniques predomin...
Conference Paper
In traditional approaches business processes are executed on top of IT-based Workflow-Management Systems (WfMS). The key benefits of the application of a WfMS are task coordination, step-by-step guidance through process execution and traceability supporting compliance issues. However, when dealing with human-driven workflows, conventional WfMS turn...
Conference Paper
Business process modelling usually involves perspectives like the functional (what), the organizational (who), the data-based (consuming and producing which information) and the behavioural (when) perspective. However, the so-called “locational” perspective is either neglected or vaguely contained in one of the others. A locational perspective impl...
Conference Paper
Nearly every process must be compliant with rules and regulations, e.g. maturity levels, contracts or laws. Compliance can be supported by design, i.e. enforcing rules whilst process execution, or by after-the-fact detection, i.e. checks on process logs. We present a framework for the identification of reasonable support of process compliance manag...
Conference Paper
Mobile devices have enabled the development of a new breed of enterprise solutions. Oracle, SAP, IBM, and others are offering mobile clients (e.g. ERP, BI, CRM) for iPhone and Android devices. Nonetheless, in the field of workflow management systems (WfMS) the progresses do not support well mobile workers. In this paper we explore how metaphors can...
Article
Conciseness is one major quality aspect for meta models. To keep them concise, language patterns like inheritance or powertypes can be used in an appropriated way. With instance specialization we present a further language pattern that rests on the idea of prototypal inheritance (e.g., known from Python or ECMAScript). Generally, it allows for a co...
Conference Paper
Most real-world business processes involve a combination of both well-defined and previously modelled as well as unforeseen and therefor unmodelled scenari-os. The goal of comprehensive process management should be to cover all actual-ly performed processes by accurate models so that they may be fully supported by IT systems. Unmodelled processes c...
Conference Paper
The development of domain-specific modelling languages (DSMLs) is not a trivial task. During recent years, a new approach has arisen which enables users to sketch example models that are used as basis for deriving an appropriate DSML. Until now, this bottom-up approach is merely applied to graphical DSMLs. However, the field of textual DSMLs is als...
Conference Paper
Recent work shows an increasing interest of the Busi-ness Process Management (BPM) community in unstructured, so-called "human-centric" processes. Case Management (CM) is a new trend that focuses on the support of collaborative human-cen-tric processes. Although CM provides concepts that support hu-man-centric work, processes have to be modelled be...
Article
The Process Observation project is used to generate business process execution logs and guides process participants through process execution. In this contribution, we introduce process evolution as an economic field of application for process observation. There are different needs for process evolution, e.g., to establish more consistent process r...
Article
Purpose ‐ Today's requirements concerning successful learning support comprise a variety of application scenarios. Therefore, the development of supporting software preferably aims at modular design. This article discusses requirements regarding flexibility of e-learning systems and presents important principles, which should be met by successful s...