Search Results for author: Ramon Fraga Pereira

Found 16 papers, 2 papers with code

Goal Recognition via Linear Programming

no code implementations11 Apr 2024 Felipe Meneguzzi, Luísa R. de A. Santos, Ramon Fraga Pereira, André G. Pereira

Goal Recognition is the task by which an observer aims to discern the goals that correspond to plans that comply with the perceived behavior of subject agents given as a sequence of observations.

Generalising Planning Environment Redesign

no code implementations12 Feb 2024 Alberto Pozanco, Ramon Fraga Pereira, Daniel Borrajo

Most research on planning environment (re)design assumes the interested party's objective is to facilitate the recognition of goals and plans, and search over the space of environment modifications to find the minimal set of changes that simplify those tasks and optimise a particular metric.

Temporally Extended Goal Recognition in Fully Observable Non-Deterministic Domain Models

no code implementations14 Jun 2023 Ramon Fraga Pereira, Francesco Fuggitti, Felipe Meneguzzi, Giuseppe De Giacomo

We develop the first approach capable of recognizing goals in such settings and evaluate it using different LTLf and PLTLf goals over six FOND planning domain models.

Uncertain Machine Ethical Decisions Using Hypothetical Retrospection

1 code implementation2 May 2023 Simon Kolker, Louise Dennis, Ramon Fraga Pereira, Mengwei Xu

We propose the use of the hypothetical retrospection argumentation procedure, developed by Sven Ove Hansson to improve existing approaches to machine ethical reasoning by accounting for probability and uncertainty from a position of Philosophy that resonates with humans.

Ethics Philosophy

Iterative Depth-First Search for Fully Observable Non-Deterministic Planning

no code implementations8 Apr 2022 Ramon Fraga Pereira, André G. Pereira, Frederico Messa, Giuseppe De Giacomo

However, most of the existing algorithms are not robust for dealing with both non-determinism and task size.

Recognizing LTLf/PLTLf Goals in Fully Observable Non-Deterministic Domain Models

no code implementations22 Mar 2021 Ramon Fraga Pereira, Francesco Fuggitti, Giuseppe De Giacomo

Goal Recognition is the task of discerning the correct intended goal that an agent aims to achieve, given a set of possible goals, a domain model, and a sequence of observations as a sample of the plan being executed in the environment.

Inferring Agents Preferences as Priors for Probabilistic Goal Recognition

no code implementations23 Feb 2021 Kin Max Gusmão, Ramon Fraga Pereira, Felipe Meneguzzi

Recent approaches to goal recognition have leveraged planning landmarks to achieve high-accuracy with low runtime cost.

Goal Recognition over Imperfect Domain Models

no code implementations12 May 2020 Ramon Fraga Pereira

Over the past years, most existing approaches to goal and plan recognition have been ignoring the need to deal with imperfections regarding the domain model that formalizes the environment where autonomous agents behave.

The More the Merrier?! Evaluating the Effect of Landmark Extraction Algorithms on Landmark-Based Goal Recognition

no code implementations6 May 2020 Kin Max Piamolini Gusmão, Ramon Fraga Pereira, Felipe Meneguzzi

Recent approaches to goal and plan recognition using classical planning domains have achieved state of the art results in terms of both recognition time and accuracy by using heuristics based on planning landmarks.

HAPRec: Hybrid Activity and Plan Recognizer

no code implementations28 Apr 2020 Roger Granada, Ramon Fraga Pereira, Juarez Monteiro, Leonardo Amado, Rodrigo C. Barros, Duncan Ruiz, Felipe Meneguzzi

Computer-based assistants have recently attracted much interest due to its applicability to ambient assisted living.

Action Recognition

An LP-Based Approach for Goal Recognition as Planning

no code implementations10 May 2019 Luísa R. de A. Santos, Felipe Meneguzzi, Ramon Fraga Pereira, André Grahl Pereira

Goal recognition aims to recognize the set of candidate goals that are compatible with the observed behavior of an agent.

Combinatorial Optimization

Landmark-Based Approaches for Goal Recognition as Planning

no code implementations26 Apr 2019 Ramon Fraga Pereira, Nir Oren, Felipe Meneguzzi

The task of recognizing goals and plans from missing and full observations can be done efficiently by using automated planning techniques.

Using Sub-Optimal Plan Detection to Identify Commitment Abandonment in Discrete Environments

no code implementations26 Apr 2019 Ramon Fraga Pereira, Nir Oren, Felipe Meneguzzi

Assessing whether an agent has abandoned a goal or is actively pursuing it is important when multiple agents are trying to achieve joint goals, or when agents commit to achieving goals for each other.

LSTM-Based Goal Recognition in Latent Space

no code implementations15 Aug 2018 Leonardo Amado, João Paulo Aires, Ramon Fraga Pereira, Maurício C. Magnaguagno, Roger Granada, Felipe Meneguzzi

Approaches to goal recognition have progressively relaxed the requirements about the amount of domain knowledge and available observations, yielding accurate and efficient algorithms capable of recognizing goals.

General Classification

Heuristic Approaches for Goal Recognition in Incomplete Domain Models

no code implementations16 Apr 2018 Ramon Fraga Pereira, Felipe Meneguzzi

Recent approaches to goal recognition have progressively relaxed the assumptions about the amount and correctness of domain knowledge and available observations, yielding accurate and efficient algorithms.

Landmark-Based Plan Recognition

1 code implementation5 Apr 2016 Ramon Fraga Pereira, Felipe Meneguzzi

Recognition of goals and plans using incomplete evidence from action execution can be done efficiently by using planning techniques.

Cannot find the paper you are looking for? You can Submit a new open access paper.