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Published in:
2014 | OriginalPaper | Chapter
Investigating Differences between Graphical and Textual Declarative Process Models
Authors : Cornelia Haisjackl, Stefan Zugal
Published in: Advanced Information Systems Engineering Workshops
Publisher: Springer International Publishing
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Declarative approaches to business process modeling are regarded as well suited for highly volatile environments, as they enable a high degree of flexibility. However, problems in understanding declarative process models often impede their adoption. Particularly, a study revealed that aspects that are present in both imperative and declarative process modeling languages at a graphical level—while having different semantics—cause considerable troubles. In this work we investigate whether a notation that does not contain graphical lookalikes, i.e., a textual notation, can help to avoid this problem. Even though a textual representation does not suffer from lookalikes, in our empirical study it performed worse in terms of error rate, duration and mental effort, as the textual representation forces the reader to mentally merge the textual information. Likewise, subjects themselves expressed that the graphical representation is easier to understand.