parfait atchadé

Dr. parfait atchadé

City Science, Massachusetts Institute of Technology, Cambridge, Maryland, USA
orcid

Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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26 June 2021 in Algorithms
Verified
Journal Article
Open access
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GAGuillermo Alonso-Linaje
Guillermo Alonso-Linaje
JAJordi Albo-Canals
Jordi Albo-Canals
DCDaniel Casado-Fauli
Daniel Casado-Fauli
This article aims to bring quantum computing to robotics. A quantum algorithm is developed to minimize the distance traveled in warehouses and distribution centers where order picking is applied. For this, a proof of concept is proposed through a Raspberry Pi 4, generating a quantum combinatorial optimization algorithm that saves the distance travelled and the batch of orders to be made. In case of computational need, the robot will be able to parallelize part of the operations in hybrid computing (quantum + classical), accessing CPUs and QPUs distributed in a public or private cloud. We developed a stable environment (ARM64) inside the robot (Raspberry) to run gradient operations and other quantum algorithms on IBMQ, Amazon Braket (D-Wave), and Pennylane locally or remotely. The proof of concept, when run in the above stated quantum environments, showed the execution time of our algorithm with different public access simulators on the market, computational results of our picking and batching algorithm, and analyze the quantum real-time execution. Our findings are that the behavior of the Amazon Braket D-Wave is better than Gate-based Quantum Computing over 20 qubits, and that AWS-Braket has better time performance than Qiskit or Pennylane.

28 January 2022 in Mathematics
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Journal Article
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SGSaul Gonzalez-Bermejo
Saul Gonzalez-Bermejo
GAGuillermo Alonso-Linaje
Guillermo Alonso-Linaje
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We propose a new Quadratic Unconstrained Binary Optimization (QUBO) formulation of the Travelling Salesman Problem (TSP), with which we overcame the best formulation of the Vehicle Routing Problem (VRP) in terms of the minimum number of necessary variables. After, we will present a detailed study of the constraints subject to the new TSP model and benchmark it with MTZ and native formulations. Finally, we will test whether the correctness of the formulation by entering it into a QUBO problem solver. The solver chosen is a D-Wave_2000Q6 quantum computer simulator due to the connection between Quantum Annealing and QUBO formulations.

5 May 2025 in IEEE Transactions on Artificial Intelligence
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Journal Article
Open access
CACarlo Adornetto
Carlo Adornetto
AMAdrian Mora
Adrian Mora
KHKai Hu
Kai Hu
LGLeticia Izquierdo Garcia
Leticia Izquierdo Garcia
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KLKent Larson
Kent Larson
The advent of Generative Agents (GAs) based on Large Language Models (LLMs) has significantly influenced the evolution of Agent-Based Modeling (ABM), offering new perspectives across various domains, including engineering and social sciences. This paper provides an extensive overview of the integration of GAs into ABMs, emphasizing the advancements and emerging challenges in their validation. Traditional ABMs, characterized by their simplistic yet powerful approach to modeling complex systems, have been redefined with the introduction of GAs. This new generation of agents is often equipped with conversational capabilities. These agents, capable of simulating believable human behaviors and interactions, present unique opportunities and hurdles, especially in urban simulations and social dynamics. We explore the nuanced differences between traditional ABMs and ABMs populated by GAs—called GABMs. We delve into the state-of-the-art implementations of GAs, and review various validation methods. Through this comprehensive examination, we aim to shed light on the potential and limitations of GAs, advocating for the design of hybrid ABM-GABM approaches and systematic validation.

6 June 2022 in Soft Computing
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Journal Article
Closed access
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GAGuillermo Alonso-Linaje
Guillermo Alonso-Linaje

4 November 2020
Verified
Book Chapter
Closed access
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ERElisabet Golobardes Ribé
Elisabet Golobardes Ribé
XCXavier Vilasís Cardona
Xavier Vilasís Cardona

2 August 2022 in Artificial Intelligence Review
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Journal Article
Closed access
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DCDaniel Casado-Fauli
Daniel Casado-Fauli
ERElisabet Golobardes Ribé
Elisabet Golobardes Ribé
XCXavier Vilasís Cardona
Xavier Vilasís Cardona