Fig. 4: Mapping of the research theme co-occurrence network.
From: Citizens’ expectations about public services: a systematic literature review
A Theoretical‑traditional cluster (e.g. “expectations,”“performance,” etc.); (B) Modern public‑service cluster (e.g. “user acceptance,”“IT,”“trust”); (C) Citizen engagement/technology cluster (e.g. “adoption,”“trust,”“engagement”). Circle size corresponds to the co-occurrence frequency. The width of the linking lines indicates the strength of the relationship between co-occurring nodes.
