2 July 2018: Vaishak Belle

Title:  Foundations for program-like plans in stochastic environments


Abstract:  In an influential paper, Levesque proposed a formal specification for analysing the correctness of program-like plans, such as conditional plans, iterative plans, and knowledge-based plans. He motivated a logical characterisation within the situation calculus that included binary sensing actions. While the characterisation does not immediately yield a practical algorithm, the specification serves as a general skeleton to explore the synthesis of program-like plans for reasonable, tractable fragments.


Increasingly, classical plan structures are being applied to stochastic environments such as robotics applications. This raises the question as to what the specification for correctness should look like, since Levesque's account makes the assumption that sensing is exact and actions are deterministic. Building on a situation calculus theory for reasoning about degrees of belief and noise, we revisit the execution semantics of generalised plans. The specification is then used to analyse the correctness of example plans.


The talk is based on the following paper to be presented at AAMAS technical track. 


On Plans With Loops and Noise.

Belle, V.

In AAMAS, 2018.

Jun 02 2018 -

2 July 2018: Vaishak Belle

Foundations for program-like plans in stochastic environments

IF 4.31/4.33