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A study on output normalization in multiclass SVMs
dc.contributor.author | González Abril, Luis |
dc.contributor.author | Velasco Morente, Francisco |
dc.contributor.author | Angulo Bahón, Cecilio |
dc.contributor.author | Ortega Ramírez, Juan Antonio |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial |
dc.date.accessioned | 2013-05-10T10:50:07Z |
dc.date.created | 2013-02-01 |
dc.date.issued | 2013-02-01 |
dc.identifier.citation | González, L. [et al.]. A study on output normalization in multiclass SVMs. "Pattern recognition letters", 01 Febrer 2013, vol. 34, núm. 3, p. 344-348. |
dc.identifier.issn | 0167-8655 |
dc.identifier.uri | http://hdl.handle.net/2117/19156 |
dc.description.abstract | The use of binary support vector machines (SVMs) in multi-classification is addressed in this paper. Margins associated to the bi-classifiers, since they depend on the geometrical disposition of the classes being separated, are, in general, of various magnitudes. In order to overcome this scaling problem, a normalization process should be applied on the SVMs’ outputs. Thus, a new normalization approach is presented based on the convex hulls that contain the classes to be separated. Furthermore, a theoretical study is developed which justifies the proposed approach, and an interpretation is provided. An empirical study is also carried out to compare this normalization with others found in the literature. |
dc.format.extent | 5 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Enginyeria electrònica::Microelectrònica::Sistemes digitals programables |
dc.subject | Àrees temàtiques de la UPC::Informàtica::Intel·ligència artificial::Aprenentatge automàtic |
dc.subject.lcsh | Support vector machines |
dc.subject.lcsh | Kernel functions |
dc.subject.lcsh | Machine learning--Mathematical models |
dc.subject.other | 1-v-r SVM |
dc.subject.other | Convex hull |
dc.subject.other | Kernel methods |
dc.subject.other | Multiclassification |
dc.title | A study on output normalization in multiclass SVMs |
dc.type | Article |
dc.subject.lemac | Sistemes experts (Informàtica) -- Autoaprenentatge |
dc.subject.lemac | Aprenentatge automàtic |
dc.subject.lemac | Kernel, Funcions de |
dc.contributor.group | Universitat Politècnica de Catalunya. GREC - Grup de Recerca en Enginyeria del Coneixement |
dc.identifier.doi | 10.1016/j.patrec.2012.11.003 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://www.sciencedirect.com/science/article/pii/S0167865512003637 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 12328656 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | González, L.; Velasco, F.; Angulo, C.; Ortega, J. |
local.citation.publicationName | Pattern recognition letters |
local.citation.volume | 34 |
local.citation.number | 3 |
local.citation.startingPage | 344 |
local.citation.endingPage | 348 |
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