## Abstract

Suppose that homogenous agents fully consume their time to invent new ideas and

learn ideas from their friends. If the social network is complete and agents pick friends and ideas of friends uniformly at random, the distribution of ideas’ popularity is an extension of the Yule-Simon distribution. It has a power-law tail, with an upward or downward curvature. For infinite population it converges to the Yule-Simon distribution. The power law is steeper when innovation is high. Diffusion follows S-shaped curves.

learn ideas from their friends. If the social network is complete and agents pick friends and ideas of friends uniformly at random, the distribution of ideas’ popularity is an extension of the Yule-Simon distribution. It has a power-law tail, with an upward or downward curvature. For infinite population it converges to the Yule-Simon distribution. The power law is steeper when innovation is high. Diffusion follows S-shaped curves.

Original language | English |
---|---|

Place of Publication | Maastricht |

Publisher | Maastricht University |

Number of pages | 29 |

Publication status | Published - 1 Jan 2013 |

### Publication series

Series | UNU-MERIT Working Papers |
---|---|

Number | 040 |