Table 6: Data extraction form.
| No | Data Extraction Category | Description | Purpose |
| 1 | Identifier | Identifier number (DOI) | |
| 2 | Date | Data extraction date | |
| Study Description | |||
| 1 | Title | The title of the study | |
| 2 | Authors Name | Name of the study authors | |
| 3 | Country | Country of the study publication (1st author) | |
| 4 | Publication Year | Publication year | |
| 5 | Type | Conference proceedings, journal article | |
| 6 | Venue | Name of the Conference or Journal | |
| 7 | Author's Affiliations | The affiliation of the authors (1st author) | |
| Study Content | |||
| 1 | Objectives | The objectives of the study | |
| 2 | Method | The method used to support the objectives | RQ1 |
| 3 | Algorithm | The name of the algorithm used in the study | RQ1 |
| 4 | Dataset | The name of the dataset used for validation | RQ2 |
| 5 | Size of Dataset | How big the data set is | RQ2 |
| 6 | Future directions and trend | Future directions, trends and application | RQ3 |