http://popups.lib.uliege.be/1373-5411/index.php?id=876 Analysis and forecasting of the behaviour of a complex natural system represented by a non-numerical time series of the system's atomic activities is considered within an objective framework of discrete event systems and processes. The presented approach is based on a hierarchy of events introduced through context-dependent event-to-event operations and to illustrate it, a simple example is included. Full text issues Volume 3 Mathematical, Physical and Biological Systems fr Mon, 01 Jul 2024 14:04:25 +0200 Mon, 01 Jul 2024 14:04:42 +0200 http://popups.lib.uliege.be/1373-5411/index.php?id=876 0