Skip to main content

Erratum to: A moderate role for cognitive models in agent-based modeling of cultural change

The Original Article was published on 13 September 2013

Correction

After publication of (Abrams 2013), I discovered errors in two formulas in the settle-nets paragraphs of the POPCO main loop section in Methods (page 13 in the PDF file). I correct these errors here. In the definition of the weighted sum n i of input activations a j from nodes j to node i across links with weights w ij , the direction of the inequality was reversed. The definition of n i should read:

n i = ∑ j w ij max ( 0 , a j ) for w ij < 0 .

There were also errors in the definition of s i , the weighted sum of a node’s current activation a i and its summed inputs p i and n i across positively and negatively weighted links, respectively. The definition of s i should read as follows:

s i = ( 1 − . 1 ) a i + ( . 99 − a i ) p i + ( a i − ( − . 99 ) ) n i

I regret these errors and hope that they do not cause confusion. Full source code for the version of POPCO used in Abrams (2013) can be found at https://github.com/mars0i/popco.

References

  1. Abrams M: A moderate role for cognitive models in agent-based modeling of cultural change. Complex Adaptive Syst Model 2013, 1(16):1–33.

    MathSciNet  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Marshall Abrams.

Additional information

The online version of the original article can be found at 10.1186/2194-3206-1-16

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and permissions

About this article

Cite this article

Abrams, M. Erratum to: A moderate role for cognitive models in agent-based modeling of cultural change. Complex Adapt Syst Model 2, 1 (2014). https://doi.org/10.1186/2194-3206-2-1

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1186/2194-3206-2-1