Complexity Index

Compute the economic complexity index (ECI) and the product complexity index (PCI) based on the RCA values.

Usage

complexity(RCAmat, method = c("eigen", "fc", "mr"), niter = 20, gamma = 1)

Arguments

RCAmat

An economy-by-product matrix with the RCA values.

method

A character string specifying the method to calculate:

• "eigen": the eigenvector solution (Hausmann et al. 2014) .

• "fc": fitness-complexity method (Tacchella et al. 2012; Pugliese et al. 2016) .

• "mr": method of reflections (Hidalgo and Hausmann 2009; Caldarelli et al. 2012) .

niter

An integer (default = 20) specifying the number of iterations for method = "fc" and method = "mr".

gamma

A numeric value (default = 1) specifying the tuning parameter for method = "fc".

Value

A list containing ECI and PCI.

References

Caldarelli G, Cristelli M, Gabrielli A, Pietronero L, Scala A, Tacchella A (2012). “A Network Analysis of Countries' Export Flows: Firm Grounds for the Building Blocks of the Economy.” PLoS ONE, 7(10), 1--11. doi:10.1371/journal.pone.0047278 .

Hausmann R, Hidalgo CA, Bustos S, Coscia M, Simoes A, Yildirim MA (2014). The Atlas of Economic Complexity: Mapping Paths to Prosperity. The Mit Press, Cambridge, MA, USA. ISBN 9780262317719, doi:10.7551/mitpress/9647.001.0001 .

Hidalgo CA, Hausmann R (2009). “The Building Blocks of Economic Complexity.” Proceedings of the National Academy of Sciences, 106(26), 10570--10575. doi:10.1073/pnas.0900943106 .

Pugliese E, Zaccaria A, Pietronero L (2016). “On the Convergence of the Fitness-Complexity Algorithm.” The European Physical Journal Special Topics, 225(10), 1893--1911. doi:10.1140/epjst/e2015-50118-1 .

Tacchella A, Cristelli M, Caldarelli G, Gabrielli A, Pietronero L (2012). “A New Metrics for Countries' Fitness and Products' Complexity.” Scientific Reports, 2(1), 723. doi:10.1038/srep00723 .