Fine-to-Coarse Ranking in Ordinal and Imbalanced Domains: An Application to Liver Transplantation

Áreas de investigación:

• Methodology - Machine learning

Año:

2017

Tipo de publicación:

Artículo en conferencia

Palabras clave:

Imbalanced data, Ranking, Ordinal classification, Over-sampling

Autores:

• Pérez-Ortiz, María
• Fernandes, Kelwin
• Cruz, Ricardo
• Cardoso, Jaime S.
• Briceño, Javier
• Hervás-Martínez, César

Volumen:

10306

Título del libro:

IWANN 2017

Serie:

Lecture Notes in Computer Science

Páginas:

525-537

ISBN:

978-3-319-59146-9

BibTex:

@conference{Perez2017, author = "Mar{\'i}a P{\'e}rez-Ortiz and Kelwin Fernandes and Ricardo Cruz and Jaime S. Cardoso and Javier Brice{\~n}o and C{\'e}sar Herv{\'a}s-Mart{\'i}nez", abstract = "Nowadays imbalanced learning represents one of the most vividly discussed challenges in machine learning. In these scenarios, one or some of the classes in the problem have a significantly lower a priori probability, usually leading to trivial or non-desirable classifiers. Because of this, imbalanced learning has been researched to a great extent by means of different approaches. Recently, the focus has switched from binary classification to other paradigms where imbalanced data also arise, such as ordinal classification. This paper tests the application of learning pairwise ranking with multiple granularity levels in an ordinal and imbalanced classification problem where the aim is to construct an accurate model for donor-recipient allocation in liver transplantation. Our experiments show that approaching the problem as ranking solves the imbalance issue and leads to a competitive performance.", booktitle = "IWANN 2017", doi = "10.1007/978-3-319-59147-6_45", isbn = "978-3-319-59146-9", keywords = "Imbalanced data, Ranking, Ordinal classification, Over-sampling ", pages = "525-537", series = "Lecture Notes in Computer Science", title = "{F}ine-to-{C}oarse {R}anking in {O}rdinal and {I}mbalanced {D}omains: {A}n {A}pplication to {L}iver {T}ransplantation", url = "http://dx.doi.org/10.1007/978-3-319-59147-6_45", volume = "10306", year = "2017", }

Abstract:

Nowadays imbalanced learning represents one of the most vividly discussed challenges in machine learning. In these scenarios, one or some of the classes in the problem have a significantly lower a priori probability, usually leading to trivial or non-desirable classifiers. Because of this, imbalanced learning has been researched to a great extent by means of different approaches. Recently, the focus has switched from binary classification to other paradigms where imbalanced data also arise, such as ordinal classification. This paper tests the application of learning pairwise ranking with multiple granularity levels in an ordinal and imbalanced classification problem where the aim is to construct an accurate model for donor-recipient allocation in liver transplantation. Our experiments show that approaching the problem as ranking solves the imbalance issue and leads to a competitive performance.