Index: Networks and Diffusion

Networks and Diffusion

Routing Summary

This folder covers social network formation and product adoption/diffusion dynamics. Contains 3 notes.

• Need how consumer networks are formed? → Social Network Formation in Consumer Markets
• Need the product adoption value function and S-curve model? → Product Adoption and Diffusion Models
• Need how network topology changes diffusion patterns? → Network Topology Effects on Diffusion

Concept Map

Concept	Note	Type	Depends On	Key Result
Network formation	Social Network Formation in Consumer Markets	concept	Heterogeneity in Agent Models	Preference similarity drives connections (homophily)
Adoption model	Product Adoption and Diffusion Models	concept	ABM vs Equation-Based Modeling	$V(\rho )=\frac{(1+{\theta }^d){\rho }^d}{{\rho }^d+{\theta }^d}$ drives S-curve adoption
Topology effects	Network Topology Effects on Diffusion	concept	Product Adoption and Diffusion Models	Clustered networks produce two-wave adoption invisible to DEs

Notes

• Social Network Formation in Consumer Markets — CONTAINS: preference-distance network (Karakaya), spatial perception fields (CUBES), random vs clustered topologies (Bonabeau), network property effects table
• Product Adoption and Diffusion Models — CONTAINS: value function $V(\rho )$, adoption S-curve, agent-level transition rule, Rogers diffusion categories
• Network Topology Effects on Diffusion — CONTAINS: random vs clustered experiment, two-wave adoption pattern, bridging ties as bottleneck, when to use ABM vs equations criterion

Sources

• abm_word_of_mouth.pdf — Adoption model and topology experiments
• abm_consumer.pdf — Preference-based network formation
• abm_human_behaviour.pdf — Spatial perception fields

See Also

• Word of Mouth — what propagates through these networks
• Market Dynamics — market-level outcomes of diffusion