Transient Bimodality in Innovation Diffusion: A Mathematical and Empirical Exploration
Keywords:
Innovation Diffusion, Transient Bimodality, Extended Bass Model, Mathe-matical Modeling, Adoption Dynamics, Stochastic Analysis, Social NetworksAbstract
Innovation diffusion has traditionally been modeled using unimodal growth pat-terns, as epitomized by the Bass Model. However, both empirical observations and theoretical findings suggest that the adoption trajectory can exhibit transient bi-modality, whereby adoption follows two distinct peaks separated by a partial slow-down or temporary decline. This paper offers a mathematically rigorous study of such dynamics by extending the canonical Bass framework to incorporate popu-lation heterogeneity, stochastic parameters, and piecewise variable diffusion rates (PVRD). We develop an ODE-based model, derive conditions for the emergence of double-peaked solutions, and propose fitting strategies—including Simulated Annealing—to handle the resulting high-dimensional estimation problem. Through analytical insights, numerical illustrations, and real-world case studies in diverse domains (e.g., consumer durables, green technologies), we elucidate how transient bimodality arises, why it matters for strategic marketing and policy decisions, and what it implies for further research on innovation diffusion.
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