Unsupervised autoencoder-based anomaly detection under limited failure data For oil industry - Ferreira, Victor Zoratti; Brito Junior, Eduardo; Cunha, Guilherme Mauri Faria da; Perez, Felipe Augusto Rodrigues; Reis, Erico dos; Pereira, Edfram Rodrigues; Louzada, Francisco (IEEE Open Journal of Instrumentation and Measurement, 2026)