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About

Elsa Silva is a researcher at INESC TEC's Industrial Engineering and Management Center and an invited Assistant Professor at the University of Minho's Production and Systems Department.  

She has a PhD in Industrial and Systems Engineering since 2012 from the University of Minho. Her main research interests include the ability to solve hard and large-scale combinatorial optimization problems that arise in various fields, such as cutting and packing problems and retail operations, using hybrid linear and meta-heuristic programming approaches.   

Elsa Silva's main research contributions have been in cutting and packing (C&P) problems. Pioneering algorithms have been developed combining mathematical models, decomposition methods and heuristics to solve practical applications that so far have not been studied realistically. This was an important contribution to the advancement of C&P knowledge.   

The practical applications addressed were Shelf Space Allocation problem, Strip Packing Problem in textile industry, Container Loading Problem with stability, weight limit, load balance and multi-drop constraints. Another important contribution in C&P area was the problem generator for every type of 2D and 3D rectangular C&P problems. 

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Publications

2022

The rectangular two-dimensional strip packing problem real-life practical constraints: A bibliometric overview

Authors
Neuenfeldt, A; Silva, E; Francescatto, M; Rosa, CB; Siluk, J;

Publication
COMPUTERS & OPERATIONS RESEARCH

Abstract
Over the years, methods and algorithms have been extensively studied to solve variations of the rectangular two-dimensional strip packing problem (2D-SPP), in which small rectangles must be packed inside a larger object denominated as a strip, while minimizing the space necessary to pack all rectangles. In the rectangular 2D-SPP, constraints are used to restrict the packing process, satisfying physical and real-life practical conditions that can impact the material cutting. The objective of this paper is to present an extensive literature review covering scientific publications about the rectangular 2D-SPP constraints in order to provide a useful foundation to support new research works. A systematic literature review was conducted, and 223 articles were selected and analyzed. Real-life practical constraints concerning the rectangular 2D-SPP were classified into seven different groups. In addition, a bibliometric analysis of the rectangular 2D-SPP academic literature was developed. The most relevant authors, articles, and journals were discussed, and an analysis made concerning the basic constraints (orientation and guillotine cutting) and the main solving methods for the rectangular 2D-SPP. Overall, the present paper indicates opportunities to address real-life practical constraints.

2022

Mathematical Models for the two-dimensional Variable-Sized Cutting Stock Problem in the Home Textile Industry

Authors
Salem, KH; Silva, E; Oliveira, JF; Carravilla, MA;

Publication
European Journal of Operational Research

Abstract

2022

CrossLog: Automatic Mixed-Palletizing for Cross-Docking Logistics Centers

Authors
Rocha, P; Ramos, AG; Silva, E;

Publication
Lecture Notes in Computer Science - Computational Logistics

Abstract

2021

Three-dimensional guillotine cutting problems with constrained patterns: MILP formulations and a bottom-up algorithm

Authors
Martin, M; Oliveira, JF; Silva, E; Morabito, R; Munari, P;

Publication
EXPERT SYSTEMS WITH APPLICATIONS

Abstract

2021

Solving the grocery backroom layout problem

Authors
Pires, M; Silva, E; Amorim, P;

Publication
INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH

Abstract

Supervised
thesis

2021

Advanced methodologies for the diagnosis of agronomic processes based on systems biology forprecision agriculture

Author
Renan Tosin

Institution
UP-FCUP

2020

OTIMIZAÇÃO DA ENTREGA DE ENCOMENDAS POR DRONES

Author
JOÃO PEDRO MOUTINHO ALVES BARBOSA

Institution
IPP-ISEP

2019

Efficient Heuristics for Two-Dimensional Cutting and Packing Problems

Author
Óscar António Maia de Oliveira

Institution
UP-FEUP

2019

Conceção e desenvolvimento de um sistema de apoio à decisão para gestão de inventários no retalho

Author
Edgar Filipe dos Anjos Couto

Institution
UP-FEUP

2016

Sistema de programação por demonstração de um manipulador com garra

Author
Ricardo Nuno Magalhães Borges

Institution
UP-FEUP