Manifold Learning Algorithms Applied to Structural Damage ‎Classification

Journal of Applied and Computational Mechanics

Francesc Pozo¹  Jersson X. Leon-Medina¹  Diego A. Tibaduiza²  Maribel Anaya³ 

[1] Control, Modeling, Identification and Applications (CoDAlab), Department of Mathematics, Escola d’Enginyeria de Barcelona Est (EEBE), Universitat Politècnica ‎de Catalunya (UPC), Campus Diagonal-Besòs (CDB), Eduard Maristany, 16, Barcelona, 08019, Spain;Departamento de Ingeniería Eléctrica y Electrónica, Universidad Nacional de Colombia, Cra 45 No. 26-85, Bogotá, 111321, Colombia‎;MEM (Modelling-Electronics and Monitoring Research Group), Faculty of Electronics Engineering, Universidad Santo Tomás, Bogotá 110231, Colombia;

关键词: structural health monitoring;    manifold learning;    feature extraction;    machine learning;    dimensionality reduction;    damage ‎classification‎;   

DOI  :  10.22055/jacm.2020.33055.2139

来源: DOAJ

【 摘 要 】

A comparative study of four manifold learning algorithms was carried out to perform the dimensionality reduction process within a proposed methodology for damage classification in structural health monitoring (SHM). Isomap, locally linear embedding (LLE), stochastic proximity embedding (SPE), and laplacian eigenmaps were used as manifold learning algorithms. The methodology included several stages that comprised: data normalization, dimensionality reduction, classification through K-Nearest Neighbors (KNN) machine learning model and finally holdout cross-validation with 25% of data for training and the remaining 75% of data for testing. Results evaluated in an experimental setup showed that the best classification accuracy was 100% when the methodology uses isomap algorithm with a hyperparameter k of 170 and 8 dimensions as a feature vector at the input to the KNN classification machine.

【 授权许可】

Unknown