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Auflistung nach Autor:in "Weidlich, Matthias"

1 - 10 von 30
  • Textdokument
    Addressing the Log Representativeness Problem using Species Discovery (Extended Abstract)
    (EMISA 2024, 2024) Kabierski, Martin; Richter, Markus; Weidlich, Matthias
    Event logs are generated during the enactment of process-centric information systems and form the basis for optimization, monitoring, and enhancement initiatives of said systems. As such, they enable a data-driven and unbiased evaluation of the as-is state of the underlying processes. Yet, since at any time, event logs represent merely a sample of the whole possible behaviour of the information system, insights are only actionable should the event log be representative of the information system from which it is derived. Therefore, the question arises of how the representativeness of an event log$L with respect to its generative system P can be quantified, given that only L is present. In this work, we argue, that representativeness of an event log needs to be assessed with an intended analysis question in mind and discuss log completeness as one important facet of representativeness. We show how established estimators from biodiversity research can be utilized to quantify log completeness.
  • Konferenzbeitrag
    Application Engineering Research at Universität Klagenfurt
    (40 Years EMISA 2019, 2020) Mayr, Heinrich C.; Paczona, Martin; Shekhovtsov, Vladimir A.
    We sketch here the general orientation (“Mission”) and the recent research projects of our research group, which is part of the Institute of Applied Informatics in the Faculty of Technical Sciences. In research and teaching, we address human centered research in (1) model engineering: user centered (requirements) modeling languages that are intuitively to understand, apply and validate, (2) design and realization of user-oriented application architectures with a strong focus on the integration of user needs into the development process, and (3) customer centered, accessible, effective and sustainable software and services.
  • Konferenzbeitrag
    Architecture blueprint for a business process simulation engine
    (EMISA 2010. Einflussfaktoren auf die Entwicklung flexibler, integrierter Informationssysteme. Beiträge des Workshops der GI-Fachgruppe EMISA (Entwicklungsmethoden für Informationssysteme und deren Anwendung), 2010) Krumnow, Stefan; Weidlich, Matthias; Molle, Rüdiger
    Simulation of business process models allows for drawing conclusions on the performance and costs of business processes before they are implemented or changed. Requirements for a business process simulation engine are specific to a concrete use case and a dedicated business domain. In this paper, we focus on the simulation of clinical pathways in a hospital. We elaborate on the requirements imposed by this use case in detail and propose an architecture blueprint for a simulation engine. It is based on annotated BPMN process models and uses timed and colored Petri nets as the underlying formalism.
  • Zeitschriftenartikel
    Automatic Generation of Glossaries for Process Modelling Support
    (Enterprise Modelling and Information Systems Architectures - An International Journal: Vol. 6, Nr. 1, 2011) Peters, Nicolas; Weidlich, Matthias
    Process models are often used for human to human communication. Besides other aspects, e.g., the chosen modelling notation or the model layout, the labelling has a strong influence on the understandability and, therefore, quality of a model. Consequently, labels should be reused and aligned across different process models. In order to support these goals, a glossary might be applied in the course of modelling. In this article, we argue that such a glossary can be generated automatically from the labels of an existing process model collection, e.g., a reference model. We introduce an approach for such a glossary generation that takes additional information on structural as well as control flow aspects into account. The applicability of our approach is illustrated by means of two case studies. Based thereon, we also report on findings regarding the appropriateness of the chosen structural and behavioural aspects.
  • Konferenzbeitrag
    Business Process Modeling Approaches and Tools at the Institute for Project Management and Information Modeling (IPIM)
    (40 Years EMISA 2019, 2020) Seel, Christian; Dörndorfer, Julian; Hilpoltsteiner, Daniel; Timinger, Holger
    Information Modeling has been a core research area in the IS discipline. Furthermore, the design and implementation of information modeling tools is an established and frequently used method to examine artifacts and phenomena. Especially in design-science-research (DSR) the implementation of prototypic modeling tools is often a key success factor for the proof-of-concept and evaluation of artefacts. The Institute for Project Management and Information Modeling (IPIM) focuses on DSR and implementation of modeling prototypes, e.g. the SenSoMod-Modeler or an adaptive BPMN modeling tool. SenSoMod is a domain-aware modeling language, which enables to model the data origin and aggregation of context as input for mobile context-sensitive business processes. The BPMN modeling tool enables the modeling of adaptive process models including all variants of a process. The tool also enables the extraction of a concrete variant from the adaptive model using parameters. At the exhibition both concepts and tools will be presented.
  • Konferenzbeitrag
    The Business Process Technology Research Group
    (40 Years EMISA 2019, 2020) Pufahl, Luise; Weske, Mathias
    In this paper the Business Process Technology research group at the Hasso Plattner Institut, University of Potsdam and its relevance for the EMISA special interest group is presented. The paper starts by reviewing the main research areas and contributions to the research community the group has provided, before sketching some of the current research topics the group is working on. In addition to the conceptual research results, the prototypes developed by BPT in the context of the BPT architecture are introduced, which relate to process modeling, event processing, and process execution.
  • Konferenzbeitrag
    Carinthia University of Applied Sciences – AAL Research
    (40 Years EMISA 2019, 2020) Ströckl, Daniela; Krainer, Daniela; Oberzaucher, Johannes; Plattner, Johanna; Oberrauner, Elena; Lattacher, Sandra; Terpetschnig, Irene
    Anchored to the Carinthia University of Applied Science, (computer) engineering researchers incorporate to improve daily living for elderly people. This paper gives an overview of the Active and Assisted Living research emphases. Embedded in an engineering and IT department (area of studies medical engineering / research unit Active & Assisted Living) one part is implementing and evaluating technology and, furthermore, in an interdisciplinary infrastructure (Institute of Applied Research on Ageing) technological, economic and social aspects of aging are focused. The portfolio has different evaluation and requirement analysis methods as well as software conceptualization and development - always with a strong focus on user involvement.
  • Zeitschriftenartikel
    Conformance Checking and Performance Improvement in Scheduled Processes - A Queueing-Network Perspective.
    (EMISA Forum: Vol. 36, No. 2, 2016) Senderovich, Arik; Weidlich, Matthias; Yedidsion, Liron; Gal, Avigdor; Mandelbaum, Avishai; Kadish, Sarah; Bunnell, Craig A.
  • Konferenzbeitrag
    Discovering Multi-Dimensional Subsequence Queries from Traces -- From Theory to Practice
    (BTW 2023, 2023) Kleest-Meißner, Sarah; Sattler, Rebecca; Schmid, Markus L.; Schweikardt, Nicole; Weidlich, Matthias
    Subsequence-queries with wildcards and gap-size constraints (swg-queries, for short) are an expressive model for sequence data, in which queries are described by patterns over an alphabet of variables and types, along with a global window size and a number of gap-size constraints. They are evaluated over a trace, i.e., a sequence of types, by replacing variables by single types, while satisfying the window and the gap-size constraints. Kleest-Meißner et al. (Proc. ICDT 2022) formalised the task of discovering an swg-query that describes best a given sample consisting of a finite number of traces, and developed a discovery algorithm solving this task. However, in practical application scenarios, traces are often multi-dimensional, i.e., a trace corresponds to a sequence of tuples of types, which renders the existing technique inapplicable.In this paper, we lift the notion of swg-queries to such a multi-dimensional setting, thereby enlarging the applicability of the query model and the techniques for query discovery. We introduce a mapping between one-dimensional and multi-dimensional sequence data, such that a multi-dimensional trace matches a multi-dimensional query if and only if the corresponding one-dimensional trace matches the corresponding one-dimensional query. We complement our formal results with a description of our prototypical implementation of query discovery for multi-dimensional sequence data. Results from evaluation experiments with real-world data indicate feasibility of our approach.
  • Konferenzbeitrag
    Enterprise Modelling Research Group at the University of Hagen
    (40 Years EMISA 2019, 2020) Strecker, Stefan
    On behalf of the entire team, I present the research programme and research themes pursued by the Enterprise Modelling Research Group at the University of Hagen, Germany.