Social insects provide us with a powerful metaphor to create decentralized systems of simple interacting, and often mobile, agents. The emergent collective intelligence of social insects---swarm intelligence---resides not in complex individual abilities but rather in networks of interactions...

The influence of contact rates on the efficiency (the ability to exploit a profitable environment) and flexibilty (the ability to track a changing environment) of foraging in ants is studied theoretically in the case where foraging relies on a mixture of group and mass recruitment. It is shown...

A model of division of labour in insect societies based on variable response thresholds is introduced. Response thresholds refer to likelihood of reacting to task-associated stimuli. Low threshold individuals perform tasks at a lower level of stimulus than high threshold individuals. Within...

The clustering of dead bodies by ants is simulated, using a cellular automaton model, the rules of which are carefully derived from experiments. Starting from a random spatial distribution of corpses, a cemetery organizes itself into clusters of corpses. The dynamics of clustering can be...

We suggest that group effect need not be invoked to explain the differences in latency times exhibited by groups of different sizes in the initiation of building in the termite {\it Macrotermes subhyalinus} (Rambur), and in the initiation of aggressive behavior in various subspecies of the honey...

In previous papers (Theraulaz et al. 1995, Bonabeau et al. 1996) we suggested, following Hogeweg and Hesper (1983, 1985), that the formation of dominance orders in animal societies could result from a self-organizing process involving a double reinforcement mechanism: winners reinforce their...

In this article, we introduce a simple within-brood competitive growth model that maximizes parental fitness in unpredictable food conditions, in species that exhibit parental care, progressive provisioning, and an initial brood overproduction. We argue that competition between siblings may...

A simple model of recruitment-based foraging in ants illustrates the idea that synchronized patterns of activity can endow a colony with the ability to forage more efficiently when a minimal number of active individuals is required to establish and maintain food source exploitation. This model,...

We introduce a simple mathematical model of regulation of division of labour in insect societies based on the notion of fixed response thresholds. Individuals with different thresholds respond differently to task-associated stimuli. Low-threshold individuals become involved at a lower level of...

Complex architectures grown by simple agents moving randomly on a 3D lattice and depositing bricks deterministically depending on local configurations of bricks are presented. Some of these architectures are strikingly similar to real wasp nest architectures. But most algorithms, in the space of...