EURASIP Journal on Information Security

Table 3 Table of correlations, Pearson’s r, between individual categories on surveyed manuscripts. Stars represent significant p-values. One star: \(p < 0.05\), two stars: \(p < 0.01\)

From: Presentation attack detection and biometric recognition in a challenge-response formalism

	Model	Response type	Process	Noticeability	Skill required	Application
Model	**1.00	*0.36	0.14	0.14	0.24	**0.58
Response type		**1.00	**0.58	0.19	-0.11	0.25
Process			**1.00	0.30	-0.17	0.15
Noticeability				**1.00	-0.01	0.12
Skill required					**1.00	0.11
Application						**1.00

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