Topics of interest include, but are not limited to:

• qualitative approaches (e.g., qualitative Petri nets), if kinetics are unknown or deliberately abstracted away

• stochastic approaches (e.g., stochastic Petri nets) to account for intrinsic noise of molecular fluctuation, and/or sources of extrinsic noise

• continuous approaches (e.g., continuous Petri nets, and thus Ordinary Differential Equations) as averaged deterministic abstractions

• hybrid approaches (e.g., hybrid Petri nets), or how to handle different abstraction and time scales in biological processes

• dedicated support of space, multi-scale and/or multi-level issues

• case studies of metabolic, signalling, regulatory, and combined networks, or other biological applications

• dedicated analysis and simulation techniques

• related tool development, including exchange formats, dedicated to biological processes