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Nathanaël Fijalkow

4 accepted papers

2025

Eco Search: A No-delay Best-First Search Algorithm for Program Synthesis

AAAI 2025technical

Many approaches to program synthesis perform a combinatorial search within a large space of programs to find one that satisfies a given specification. To tame the search space blowup, previous works introduced probabilistic and neural approaches to guide this combinatorial search by inducing heurist…

2025

Revelations: A Decidable Class of POMDPs with Omega-Regular Objectives

AAAI 2025technical

Partially observable Markov decision processes (POMDPs) form a prominent model for uncertainty in sequential decision making. We are interested in constructing algorithms with theoretical guarantees to determine whether the agent has a strategy ensuring a given specification with probability 1. This…

2022

Scaling Neural Program Synthesis with Distribution-Based Search

AAAI 2022technical

We consider the problem of automatically constructing computer programs from input-output examples. We investigate how to augment probabilistic and neural program synthesis methods with new search algorithms, proposing a framework called distribution-based search. Within this framework, we introduce…

2020

Assume-Guarantee Synthesis for Prompt Linear Temporal Logic

IJCAI 2020poster

Prompt-LTL extends Linear Temporal Logic with a bounded version of the ``eventually'' operator to express temporal requirements such as bounding waiting times. We study assume-guarantee synthesis for prompt-LTL: the goal is to construct a system such that for all environments satisfying a first pro…

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