Figures & data
Figure 1. The types of machine learning. This is achieved by supervised learning, unsupervised learning, semisupervised learning, or reinforcement learning. Both Supervised and unsupervised can be further distinguished with classification and regression for supervised learning. Finally clustering, dimensionality reduction and Clustering in unsupervised learning.
![Figure 1. The types of machine learning. This is achieved by supervised learning, unsupervised learning, semisupervised learning, or reinforcement learning. Both Supervised and unsupervised can be further distinguished with classification and regression for supervised learning. Finally clustering, dimensionality reduction and Clustering in unsupervised learning.](/cms/asset/6e13f413-5227-44e3-8491-db1cb7241350/gsol_a_1890736_f0001_oc.jpg)
Figure 2. The transformation from input data into feature space for a greater fit (Gholami and Fakhari Citation2017).
![Figure 2. The transformation from input data into feature space for a greater fit (Gholami and Fakhari Citation2017).](/cms/asset/f6b4d670-a2e9-45de-9921-910566d239d2/gsol_a_1890736_f0002_oc.jpg)
Table 1. Summary of references relating to the machine learning methods used in the specific types of monitoring and maintenance technique.
Table 2. Summary of the benefits and limitations for the 5 individual regression machine learning methods.