People involved
 in Modis
Demo Software (Applets)
Free Software
Project Status
Mobile Diagnosis Project funded
		 by the Hochschuljubiläumsstiftung der Stadt Wien


The MODIS: 'Mobile Diagnosis' project has the aim to build diagnosis agents with communication capability and which run on multiple platforms such as workstations, PCs, and PDAs. Currently, a language for describing the behavior and the structure of diagnosis systems is in development. This language will offer constructs for describing different behavioral modes, their probabilities, repair actions and repair costs, observation costs, physical impossibility axioms, among others. The description of hierarchical systems is also possible. The full syntax and semantics of the language together with a parser written in Smalltalk will be made available at the end of 1998. Other objectives of MODIS are: 
  • Defining an object-oriented framework for communication between multiple diagnosis and interface agents. In this part of the project, a communication language is used to transfer system descriptions, observations, results, and other diagnostic information. The framework itself must be flexible enough to provide communication via several channels, e.g., via email, remote file access, and socket-based communications. 
  • Improving diagnosis algorithms to be usable in PDAs for medium size diagnosis systems (approximately 500 components). Since PDAs have restricted memory and computational power, algorithms must be optimised in order to reach the goal of providing a mobile diagnosis assistant with appealing user-interaction. Currently there are several algorithms available which can be used. Some are general and others are restricted to systems satisfying certain structural properties (e.g., trees). 
  • Defining a framework for the graphical user interface of diagnosis systems. Different resolution sizes (from 320x240 black-and-white up to 1024x800 with 16 Mio Colours) and input devices (mouse, keyboard, touch-screen) must be supported. 

  This work has been supported by the Hochschuljubiläumsstiftung der Stadt Wien under project grant H-00031/97.

Send comments and requests to Franz Wotawa
(C) 1998, Technische Universität Wien