24 research outputs found
Network Marketing on a Small-World Network
We investigate a dynamic model of network marketing in a small-world network
structure artificially constructed similarly to the Watts-Strogatz network
model. Different from the traditional marketing, consumers can also play the
role of the manufacturer's selling agents in network marketing, which is
stimulated by the referral fee the manufacturer offers. As the wiring
probability is increased from zero to unity, the network changes from
the one-dimensional regular directed network to the star network where all but
one player are connected to one consumer. The price of the product and the
referral fee are used as free parameters to maximize the profit of the
manufacturer. It is observed that at the maximized profit is
constant independent of the network size while at , it
increases linearly with . This is in parallel to the small-world transition.
It is also revealed that while the optimal value of stays at an almost
constant level in a broad range of , that of is sensitive to a
change in the network structure. The consumer surplus is also studied and
discussed.Comment: 12 pages, to appear in Physica
Costly switching and investment volatility
This paper extends the literature on the optimal switching rule between two investments by considering the case where switching between investments is costly. The model builds on the classic framework of the multi-armed Bandit problem by explicitly incorporating two key assumptions. First, switching investments is costly. Second, only the investment operated by the investor evolves as a random walk. The objective of the investor is to maximize the discounted sum of expected net profits over the infinite horizon. The main result is that when the volatility of profits from investments increases, so does the minimum profit gain needed for an investor to switch investments. Copyright Springer-Verlag Berlin/Heidelberg 2005Switching cost, Optimal switching rule, Random walk, Volatility.,
Impulse response functions estimated for various pairs of moisture budget components in the pre-industrial
The dataset contains the results of impulse response functions estimated for various pairs of moisture budget components. The estimation is performed for the pre-industrial. STATA 15 is used for estimation.</p
Impulse response functions for the present (2006-2025) the future (2018-2100)
The dataset contains the results of impulse response functions estimated for various pairs of moisture budget components. The estimation is performed for the present (2006-2025) and the future (2018-2100). STATA 15 is used for estimation.</p
Neighborhood structure and the evolution of cooperation
Local interaction, Evolution, Cooperation, C72, D64,
A Note on Connectivity and Stability in Dynamic Network Formation
We consider the dynamic network formation problem under the requirement that the whole network be connected and remain connected after q nodes are destroyed. We propose the concept of dynamic Cq-stability and characterize dynamic Cq-stable networks for any q≥0. Comparison with the outcome in the static model is also discussed