dc.contributor |
Universitat de Vic. Escola Politècnica Superior |
dc.contributor |
Universitat de Vic. Grup de Recerca en Tecnologies Digitals |
dc.contributor.author |
Monte-Moreno, Enric |
dc.contributor.author |
Chetouani, Mohamed |
dc.contributor.author |
Faundez-Zanuy, Marcos |
dc.contributor.author |
Solé-Casals, Jordi |
dc.date |
2009 |
dc.identifier |
MONTE-MORENO, Enric i altres . "Maximum likelihood linear programming data fusion for speaker recognition". A: Speech Communication, 2009, vol. 51, núm. 9, pàg. 820-830 |
dc.identifier |
0167-6393 |
dc.identifier |
http://hdl.handle.net/10854/2075 |
dc.identifier |
https://doi.org/10.1016/j.specom.2008.05.009 |
dc.identifier.uri |
http://hdl.handle.net/10854/2075 |
dc.description |
Biometric system performance can be improved by means of data fusion. Several kinds of
information can be fused in order to obtain a more accurate classification (identification or
verification) of an input sample. In this paper we present a method for computing the
weights in a weighted sum fusion for score combinations, by means of a likelihood model.
The maximum likelihood estimation is set as a linear programming problem. The scores are
derived from a GMM classifier working on a different feature extractor. Our experimental
results assesed the robustness of the system in front a changes on time (different sessions)
and robustness in front a change of microphone. The improvements obtained were
significantly better (error bars of two standard deviations) than a uniform weighted sum or a
uniform weighted product or the best single classifier. The proposed method scales
computationaly with the number of scores to be fussioned as the simplex method for linear
programming. |
dc.format |
application/pdf |
dc.language |
eng |
dc.publisher |
Elsevier |
dc.relation |
http://dx.doi.org/10.1016/j.specom.2008.05.009 |
dc.rights |
(c) 2009 Elsevier. Published article is available at: http://dx.doi.org/10.1016/j.specom.2008.05.009 |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Veu, Processament de |
dc.title |
Maximum likelihood Linear Programming Data Fusion for Speaker Recognition |
dc.type |
info:eu-repo/semantics/article |
dc.type |
info:eu-repo/acceptedVersion |