INVESTIGADORES
KUPERMAN Marcelo Nestor
artículos
Título:
Random-walk model to study cycles emerging from the exploration-exploitation trade-off
Autor/es:
LAILA KAZIMIERSKI; GUILLERMO ABRAMSON; MARCELO KUPERMAN
Revista:
PHYSICAL REVIEW E
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 2015 vol. 91 p. 121241 - 121248
ISSN:
1539-3755
Resumen:
We present a model for a random walk with memory, phenomenologically
inspired in a biological system. The walker has the capacity to remember
the time of the last visit to each site and the step taken from there.
This memory affects the behavior of the walker each time it reaches an
already visited site modulating the probability of repeating previous
moves. This probability increases with the time elapsed from the last
visit. A biological analog of the walker is a frugivore, with the
lattice sites representing plants. The memory effect can be associated
with the time needed by plants to recover its fruit load. We propose two
different strategies, conservative and explorative, as well as
intermediate cases, leading to nonintuitive interesting results, such as
the emergence of cycles.