Table 2.

Extract of the comparison of different lists of QoC criteria [12].

		buchholz 2003 [3]	kim 2006 [13]	sheikh 2007 [6]	filho 2010 [14]	manzoor 2012 [15]	neisse 2012 [10]
1	Probability context is free of errors	Correctness	Accuracy		Precision	Accuracy	Precision
5	Time between production of contexts			Temporal resolution	✓	Time period
6	Date of collection of context	✓	✓	✓	✓	Measurement time	Timestamps
10	Closeness, Repeatability of measurements (ISO)						Precision
11	Granularity (detail level) of context	Precision		Precision	Sensitiveness	Usability
15	Validity of context based on freshness	Up todateness(6)	Up todateness(6)	Freshness (6)	Up todateness(5, 6)	Timeliness (5, 6)

Meaning used by all authors; Name: Name only defined by one author; Name: Name defined by different authors for different meanings; Name: Name defined by different authors for the same meaning; Name (X): The definition of this criterion depends on the X criterion; ✓: Criterion not defined by author but another criterion depends on it.