A Unified Subspace Classification Framework Developed for Diagnostic System Using Microwave Signal
Paper i proceeding, 2013

Subspace learning is widely used in many signal processing and statistical learning problems where the signal is assumably generated from a low dimensional space. In this paper, we present a unified classifier including several concepts from different subspace techniques, such as PCA, LRC, LDA, GLRT, etc. The objective is to project the original signal (usually of high dimension) into a smaller subspace with 1) within-class data structure preserved and 2) between-class-distance enhanced. A novel classification technique called Maximum Angle Subspace Classifier (MASC) is presented to achieve these purposes. To compensate for the computational complexity and non-convexity of MASC, an approximation is proposed as a trade-off between the classification performance and the computational issue. The approaches are applied to the problem of classifying high dimensional frequency measurements from a microwave based diagnostic system and results are compared with existing methods.

classification

Supervised subspace learning

high dimensional data

class separability

Författare

Yinan Yu

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Signalbehandling

Tomas McKelvey

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Signalbehandling

21st European Signal Processing Conference (EUSIPCO), September, Marrakech, Morocco

2219-5491 (ISSN)

Ämneskategorier

Annan data- och informationsvetenskap

Signalbehandling

Styrkeområden

Informations- och kommunikationsteknik

ISBN

978-099286260-2