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AISB opportunities Bulletin Item

Postdoctoral position in formal modelling, Toulouse, FRANCE


A post-doctoral position is still available in 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 at the following link: 

 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.

 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

 * 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

 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 .