LiSEB: a language for modeling living systems with APL2

The paper discusses the design and implementation of LiSEB, a class-based language built on top of APL2 to respond to challenges posed by modelling living systems from a medical point of view. LiSEB capitalises on several features of APL and on some lessons learned from its history. Living systems are modelled as open systems: environments in which concurrent mobile autonomous agents interact. Modelling of these properties required extensions of traditional object-oriented paradigms and of their previous translations under APL: a) every object performs a sequence of actions dynamically modified to adapt to circumstances; b) a new policy of message management is introduced uniformly encompassing broadcast and directly addressed communication. An example of a simulation using LiSEB illustrates these concepts.

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