Graduate School and Research Center in Digital Sciences

Acoustic context recognition for mobile devices using a reduced complexity SVM

Battaglino, Daniele; Mesaros, Annamaria; Lepauloux, Ludovick; Pilati, Laurent; Evans, Nicholas

EUSIPCO 2015, 23rd European Signal Processing Conference, August 31st-September 4th, 2015, Nice, France

Automatic context recognition enables mobile devices to react to changes in the environment and different situations. While many different sensors can be used for context recognition, the use of acoustic cues is among the most popular and successful. Current approaches to acoustic context recognition (ACR) are too costly in terms of computation and memory requirements to support an always-listening mode. This paper describes our work to develop a reduced complexity, efficient approach to ACR involving support vector machine classifiers. The principal hypothesis is that a significant fraction of training data contains information redundant to classification. Through clustering, training data can thus be selectively decimated in order to reduce the number of support vectors needed to represent discriminative hyperplanes. This represents a significant saving in terms of computational and memory efficiency, with only modest degradations in classification accuracy.

Document Bibtex

Title:Acoustic context recognition for mobile devices using a reduced complexity SVM
Keywords:Acoustic Context Recognition, mobile devices contextualization, SVM, k-means, LDA
Type:Conference
Language:English
City:Nice
Country:FRANCE
Date:
Department:Digital Security
Eurecom ref:4611
Copyright: © EURASIP. Personal use of this material is permitted. The definitive version of this paper was published in EUSIPCO 2015, 23rd European Signal Processing Conference, August 31st-September 4th, 2015, Nice, France and is available at :
Bibtex: @inproceedings{EURECOM+4611, year = {2015}, title = {{A}coustic context recognition for mobile devices using a reduced complexity {SVM}}, author = {{B}attaglino, {D}aniele and {M}esaros, {A}nnamaria and {L}epauloux, {L}udovick and {P}ilati, {L}aurent and {E}vans, {N}icholas }, booktitle = {{EUSIPCO} 2015, 23rd {E}uropean {S}ignal {P}rocessing {C}onference, {A}ugust 31st-{S}eptember 4th, 2015, {N}ice, {F}rance}, address = {{N}ice, {FRANCE}}, month = {08}, url = {http://www.eurecom.fr/publication/4611} }
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