# APNN-Toolbox

The APNN-Toolbox is an attempt to create an open toolset around a common exchange
interface, so-called Abstract Petri Net Notation (APNN). The toolbox has a clear focus
on analysis methods which consider the complete state space and where the common
state space explosion problem is accomplished by Kronecker representations.

The toolbox provides a graphical user interface (APNNed) to specify Petri nets and
to control subsequent analysis.

Other modeling formalisms and tools are connected to the APNN-Toolbox, this is
the case for PEP, GreatSPN and a tool for the process chain formalism employed in the
modeling of logistic networks in the
colloborative research centre 559 at Dortmund
university.

Functional analysis includes tools for checking classical Petri net liveness but also
model cheking for computational tree logic (CTL) and linear temporal logic (LTL) to consider
more general properties. All these methods are implemented in a way that profits
from a given Kronecker representation.

Quantitative analysis focuses on continuous time Markov chains (CTMCs) and their
transient or steady state behavior. A rich variety of numerical techniques has been
implemented for modular and hierarchical Kronecker representations. These techniques yield
transient or steady state distributions, which are either aggregated to typical performance
measures like distributions of token populations and mean throughput of transitions.

## Innovations

Kronecker representations to accomplish the state space explosion problem
Parallel calculation of steady state distribution

## Application areas

computer networks
communication networks
logistic systems

Lehrstuhl Informatik IV, Universität Dortmund

© 28.08.2001