Abstract
Recent research on maintaining diversity in parallel problem solving takes into consideration only network structure, without considering the agentsâ learning strategies. In this paper, we use a simulation study to extend Marchâs classic model by using locomotion and assessment as agentsâ problem-solving strategies. First, we present a simulation framework that consists of external environment, communication networks, and agentsâ learning strategies. Second, based on the framework, we develop Marchâs model to depict external environment. Third, we introduce four archetypical networks: a regular network, a small-world network, a preferentially attached network, and a totally connected network as agentsâ communication structure. Finally, we design three experiments to explore the performance implication of locomotors and assessors under different networks. Results suggest that network structure affects performance more than learning strategy. The more efficient the network is at diffusing knowledge, the better the performance in the short run but the worse in the long run. Locomotors can help keep diversity; a high proportion of locomotorsâ team has a better final performance but need more equilibrium time. Furthermore, moderate composition among locomotors and assessors increases costly interaction uncertainty. We discuss the findingsâ implications for the regulatory mode and problem-solving literature.
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