Department of Information Security and Communication Technology

NTNU QUAM Lab: Quantitative modelling of dependability and performance

Illustration: threats to the system

The NTNU QUAM Lab at the Department of information security and communication systems focuses on quantifying dependability and performance in complex, digital eco-systems. {QUAM (Latin) - how, to what degree)}

The ICT infrastructure for service provisioning in the private and public sector is a digital eco-system lacking coordinated engineering and management. Optimizing the resources allocated to a service makes it possible to manage dependability and performance in normal operation, with failures having minor consequences.  Furthermore, the system (including societal, operational and technical aspects) must be prepared for restoration of service after a major event such as the failure of a software platform, security attacks or natural disasters.

There is currently no theoretical foundation to control the societal and per service dependability of ICT infrastructure in the digital eco-system. No foundation has been established for optimization, consolidated management and provision of this infrastructure either from a public regulatory position or by groups of autonomous (commercially) cooperating providers. Currently, service level agreements (SLAs) are the only means to establish cooperation between the actors in the eco-system. 

Illustration: Toolbox

Domain examples include smart grids, clouds, communication systems, transportation, health care, and financial systems, which are all crucial parts of modern society, enabling economic growth and welfare for citizens. 

The NTNU QUAM Lab will contribute to understanding and quantifying system of systems complexity in NTNU’s ICT enabling technology. The lab’s Smart Grid involvement will also benefit the strategic research area NTNU Energy.


Portrait: Poul HeegaardProfessor Poul E. Heegaard, Manager


Senior personnel:

Portrait: B. HelvikProfessor Bjarne E. Helvik

Portrait: Y. Jiang

Professor Yuming Jiang


People working at QUAM Lab

E-mail Quam Lab


Publications by QUAM Lab


NTNU QUAM Lab aims to educate PhD and master’s candidates and to produce research results that promote robust and high-quality ICT infrastructures and services for society.

Current projects

Research focus

System modelling: Modelling of the functional interaction between embedded technical sub-systems in an eco-system with multiple actors coordinated via business models only.

Management strategies: Cost-effective management and provisioning of (digital) ecosystems, considering the trade-off between cost and quality.

Quantitative assessment: Resource allocation optimization (modelling, measurements, simulations) of robustness/dependability and performance in digital ecosystems.