Department seminar: "ΔQSD: The ΔQ Systems Development Paradigm"
A distinguished lecture by Peter Van Roy (Université catholique de Louvain, BE)
Hovedinnhold
Welcome to a new department seminar!
Mingling and refreshments from 12:45. The talk itself starts at 13:00.
Abstract:
The ΔQ Systems Development paradigm (ΔQSD) is an approach for modelling distributed systems that allows to quantify risks and performance trade-offs. ΔQSD can be used both for design and diagnosis. For design, it allows to quantify risks early on in the design process well before the system is built, and for diagnosis it supports real-time monitoring to pinpoint and correct behavior anomalies. The paradigm was developed by the UK company PNSol over more than 20 years and has been validated in many large industrial systems including with IOHK, BT, Vodafone, and Boeing Space and Defence.
In this talk we explain the basic principles of ΔQSD with practical examples taken from industrial use cases. ΔQSD is based on the concept of quality attenuation, which captures both delay and failure of components, and the concept of outcome diagram, which gives the causal connections between observed behaviors of the system. We are part of an ongoing research project to formalize and disseminate ΔQSD, and one of our main goals is to provide tool support so that it can be used by the general community of system developers.