Cross-recurrence quantification (CRQ) is a non-linear method that quantifies how similarly two observed data series unfold over time. CRQ produces measures reflecting coordination, such as how often two data series have similar values or reflect similar system states (called percentage recurrence, or %REC), among other measures.
References
- Shockley, K.; Butwill, M.; Zbilut, J.; Webber, C. (2002). "Cross recurrence quantification of coupled oscillators". Physics Letters A. 305 (1–2): 59–69. Bibcode:2002PhLA..305...59S. doi:10.1016/S0375-9601(02)01411-1.
- Shockley, K.; Richardson, D.C.; Dale, R. (2009). "Conversation and coordinative structures". Topics in Cognitive Science. 1 (2): 305–319. doi:10.1111/j.1756-8765.2009.01021.x. PMID 25164935.
- Zbilut, J.P.; Giuliani, A.; Webber, C.L. Jr (1998). "Detecting deterministic signals in exceptionally noisy environments using cross-recurrence quantification". Physics Letters A. 246 (1–2): 122–128. Bibcode:1998PhLA..246..122Z. doi:10.1016/S0375-9601(98)00457-5.
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