
Figure 1:
Flow chart for systematic selection of relevant articles using PRISMA guideline.

Figure 2:
Six (6) phases of review protocol.
Table 1.
Research questions and their subsequent research objectives.
Table 2.
Primary and derived search terms for relevant research paper elicitation.
| Search Terms | |||||
|---|---|---|---|---|---|
| Primary | Concept Drift | Online learning | Machine Learning | Adaptive model | Big Data |
| Derived | Nonstationary features | Fast Learning | Supervised | Self-regulatory | Continuous data |
| Variability and Veracity | Real-Time Learning | Unsupervised | Dynamic model | Stream data | |
| Conceptual change | Adaptive Learning | Clustering | Meta-Cognitive model | Unbalanced data | |
| Concept Shift | Dynamic Learning | Classification | Robust model | Complex data | |
| Feature Variability | Continuous Learning | Regression | Evolving stream | ||