Add to ORKGMany knowledge-intensive processes are driven by business\u3cbr/\u3eentities about which knowledge workers make decisions and to which they\u3cbr/\u3eadd information. Artifact-centric process models have been proposed to\u3cbr/\u3erepresent such knowledge-intensive processes. Declarative artifact-centric\u3cbr/\u3eprocess models use business rules that dene how knowledge experts\u3cbr/\u3ecan make progress in a process. However, in many business situations\u3cbr/\u3eknowledge experts have to deal with uncertainty and vagueness. Currently,\u3cbr/\u3ehow to deal with such situations cannot be expressed in declarative\u3cbr/\u3eartifact-centric process models. We propose the use of fuzzy logic to\u3cbr/\u3emodel uncertainty.We use Guard-Stage-...