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Notice

AISB opportunities Bulletin Item

Postdoctoral position in formal modelling of the problem domain, Toulouse, FRANCE

http://www.onera.fr/sites/default/files/u494/postdoc-Onera.pdf

A post-doctoral position is available at Toulouse, France, jointly 
proposed by Onera/DTIM and IRIT. The objective is to enrich existing 
formally-grounded requirement modelling approaches in order to allow to 
reason about the problem domain.

Further details are available on the following link: 
http://www.onera.fr/sites/default/files/u494/postdoc-Onera.pdf


*CONTEXT*
==========
Requirements engineering (RE) is critical in software and system design.
Indeed, a major part of the cost of software and system development is known
to be traceable to the understanding of the problem domain and requirements.
In the last decade, much research on this topic has reached maturity and has
been integrated into modeling methods.

Over the last few years, Onera has been developing a "core" language for
requirements modelling, called  Khi, which allows to describe the behavioural
goals of the system on the one hand, and the different agents of the system,
with their behaviour, on the other hand. The main problem addressed by Khi is
to assess possible assignations of agents to goals, i.e., to answer the
following question: "is a given set of  agents able to ensure a given goal?"
In order to allow formal verification, Khi comes with a formal semantics
relying on a temporal multi-agent  logic called Updatabe Strategy Logic (USL).
USL generalizes temporal logics with the ability to reason about the
strategies applied by agents in order to fulfill their objectives.
Although very promising, Khi lacks a tractable way to model and reason about
the problem domain, i..e., the conceptual entities that form the system and
its environment, as well as their types, relationships, etc. Although some
approaches allow to model a structural view of the domain, a unified formal
framework considering the problem domain, goals and agents altogether is still
lacking.

*DESCRIPTION OF THE ACTIVITY*
==========================
The aim of this postdoctoral position is to devise:
*  an extension of Khi allowing to reason about both the expected behaviour of
the system and the main concepts that form the domain. The underlying formal
semantics will build on USL on the one  hand, and on a formal framework well-
suited for domain modelling (e.g., first-order logic, relation algebra,
description logics or algebraic specification) on the other hand. The choice
for the latter will result from a trade-off between expressivity, user-
friendliness and the potential for automated  verification. Following an
ongoing work concerning USL,  meta-theoretical properties of the proposed
logic will be possibly  validated using a proof assistant such as Coq or
Isabelle.

* a method, possibly supported by a software prototype, allowing to design and
validate models of the above-mentioned Khi extension.

*KEYWORDS*: temporal logic, multi-agent logic, formal domain modelling,
requirement engineering

*APPLICATION*
============
This is a joint proposition between two Toulouse computer science labs:
Onera/DTIM and IRIT. Candidates are expected to be fluent in English or in
French and should send a resume via email to Julien Brunel
 and Jean-Paul Bodeveix .