On Generalized Comparison-Based Sorting Problems

Author(s):  
Jean Cardinal ◽  
Samuel Fiorini
Keyword(s):  
2012 ◽  
Vol 50 (17) ◽  
pp. 4767-4784 ◽  
Author(s):  
Alessio Ishizaka ◽  
Craig Pearman ◽  
Philippe Nemery
Keyword(s):  

Author(s):  
Shyamsundar Rajaram ◽  
Ashutosh Garg ◽  
Xiang Sean Zhou ◽  
Thomas S. Huang

Omega ◽  
2020 ◽  
pp. 102381
Author(s):  
Renata Pelissari ◽  
Alvaro José Abackerli ◽  
Sarah Ben Amor ◽  
Maria Célia Oliveira ◽  
Kleber Manoel Infante

2015 ◽  
Vol 82 (3) ◽  
Author(s):  
Matthias Richter ◽  
Thomas Längle ◽  
Jürgen Beyerer

AbstractIn this paper, we present a flexible method for color-based sorting of bulk materials. It is based on semantically meaningful color features that are constructed from a set of training images. First, estimates of color-occurrence frequencies of different materials are derived from the training images and fused into color classes, which are then used to classify individual pixels. An object descriptor is built as count statistic over the color classes appearing in the object image. This descriptor has many advantages: it is compact and very fast to compute, invariant to scale and rotation, has a very clear, intuitive interpretation, and can be used with simple rule-based classifiers. However, tuning the parameters that govern the feature construction process is laborious and requires a lot of experience on part of the system operator. To overcome this shortcoming, we automatically learn the parameters using genetic algorithms. We apply our method to wine grape sorting problems to show that this approach outperforms a human expert. At the same time, it takes considerably less effort on the human part and frees the expert to attend to other tasks. Furthermore, the system allows non-experts to successfully put a sorting machine in operation.


2014 ◽  
Vol 39 (2) ◽  
pp. 57-77 ◽  
Author(s):  
Eduardo Fernandez ◽  
Jorge Navarro ◽  
Eduardo Salomon

Abstract Some recent works have established the importance of handling abundant reference information in multi-criteria sorting problems. More valid information allows a better characterization of the agent’s assignment policy, which can lead to an improved decision support. However, sometimes information for enhancing the reference set may be not available, or may be too expensive. This paper explores an automatic mode of enhancing the reference set in the framework of the THESEUS multi-criteria sorting method. Some performance measures are defined in order to test results of the enhancement. Several theoretical arguments and practical experiments are provided here, supporting a basic advantage of the automatic enhancement: a reduction of the vagueness measure that improves the THESEUS accuracy, without additional efforts from the decision agent. The experiments suggest that the errors coming from inadequate automatic assignments can be kept at a manageable level.


2015 ◽  
Vol 42 (17-18) ◽  
pp. 6342-6349 ◽  
Author(s):  
Francesco Lolli ◽  
Alessio Ishizaka ◽  
Rita Gamberini ◽  
Bianca Rimini ◽  
Michael Messori

Engevista ◽  
2015 ◽  
Vol 17 (3) ◽  
pp. 288
Author(s):  
João Carlos Namorado Clímaco ◽  
Luis Dias ◽  
Luis Alçada Almeida

In this work we outline and make a critical discussion of three software packages dedicated to multiattribute models, based on a learning oriented paradigm and involving in its development researchers of INESC-Coimbra. Namely, VIP-Analysis Dias and Clímaco 2000) based on the additive model in order to aggregate value functions, but just requiring imprecise information on the scale coefficients; the IRIS system (Interactive Robustness analysis and parameters Inference for multicriteria Sorting problems - Dias e Mousseau, 2003) dedicated to the sorting problematic, according to a pre-defined set of categories, based on the ELECTRE TRI (Yu 1992), but not requiring the decision maker to fix precise values for all parameters of the method; and, finally , an web interface, called “MATRIX”, for a base of methods including: : Simple Additive Weighting and TOPSIS (Yoon and Hwang, 1995), VIKOR (Duckstein and Opricovic, 1980), ELECTRE I (Benayoun et al., 1966; Roy, 1968), ELECTRE III (Roy, 1978), ELECTRE IV (Roy and Hugonnard, 1982), ELECTRE TRI (Yu, 1992) e AHP (Saaty, 1980).


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