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In this paper, we present a theoretical model that can simulate the diffusion of knowledge in social networks using an evolutionary approach. We assume that social networks built on processes of collaboration and cooperation among stakeholders (people and companies) evolve like living organisms, as described by Charles Darwin in The Origin of Species. We propose an evolutionary model of the diffusion of knowledge, in which stakeholders are knowledge propagators and/or receivers, depending on their customizable attributes. We consider each attribute as a gene that constitutes a chromosome. As in Darwin's theory, the proposed model achieves the processes of crossover and mutation between stakeholders for several generations, until a maximum number of generations is reached. The main contribution of the model is the creation of an environment that is conducive to the study of the dynamics of network cooperation, which uses the stakeholders’ attributes as parameters. Modelo evolutivo de difusion del conocimiento basado en afinidad Resumen En este articulo presentamos un modelo teorico capaz de simular la difusion del conocimiento en redes sociales, usando una aproximacion evolutiva. Partimos del presupuesto que redes sociales constituidas por procesos de cooperacion entre actores (e.g. personas, empresas, etc.) evolucionan de forma semejante a los organismos vivos, como ha sido descrito por Charles Darwin en El Origen de las Especies . Proponemos un modelo evolutivo de difusion del conocimiento, donde los actores son propagadores y/o retenedores de conocimiento, dependiendo de atributos ajustables que cada actor presenta. Consideramos cada atributo un gen que constituye a un cromosoma. Similar a la teoria de Darwin, el modelo propuesto realiza los procesos de crossover y mutacion entre los actores por diversas generaciones, hasta que se obtiene un numero maximo de generaciones. La principal contribucion del modelo es la creacion de un entorno favorable para estudiar la dinamica de cooperacion en red teniendo como parametros los atributos de cada uno de los actores. Palabras clave:  Redes sociales, redes de cooperacion, difusion del conocimiento, modelo evolutivo.

An affinity-based evolutionary model of the diffusion of knowledge