No bio entered.
Environmental uncertainty affects the optimal structure of information-sharing networks
Takao Sasaki Marco Janssen Stephen Pratt Zachary Joseph Shaffer | Published Monday, March 16, 2015We used a computer simulation to measure how well different network structures (fully connected, small world, lattice, and random) find and exploit resource peaks in a variable environment.
The relationship between product information quantity and diversity of consumer decisions
Takao Sasaki Marco Janssen David Vaughn Becker Rebecca Neel | Published Tuesday, October 27, 2015We developed an agent-based model to explore underlying mechanisms of behavioral clustering that we observed in human online shopping experiments.
Linear recruitment leads to allocation and flexibility in collective foraging by ants
Zachary Joseph Shaffer Takao Sasaki Stephen Pratt | Published Thursday, July 11, 2013 | Last modified Thursday, September 05, 2013Ants in the genus Temnothorax use tandem runs (rather than pheromone trails) to recruit to food sources. This model explores the collective consequences of this linear recruitment (as opposed to highly nonlinear pheromone trails).
A simple behavioral model predicts the emergence of complex animal hierarchies
Takao Sasaki Clint A Penick Zachary Joseph Shaffer Stephen Pratt Jürgen Liebig | Published Tuesday, December 22, 2015We used our model to test how different combinations of dominance interactions present in H. saltator could result in linear, despotic, or shared hierarchies.
Foundress dilemma model
Zachary Joseph Shaffer Takao Sasaki Brian Haney Marco Janssen Stephen Pratt Jennifer Fewell | Published Thursday, July 28, 2016A haystack-style model of group selection to capture the essential features of colony foundation for queens of the ant based on observation of the ant Pogonomyrmex californicus.
Under development.