In addition to employing tokenizing algorithms to identify address elements, the Postal Matcher also defines geographic elements into logical hierarchies. As shown in the following table, a Level 1 geography is the highest (largest) geographic or postal level. The following table shows the geographic levels and examples for Taiwan.
| Term | Concept | Metro Example | City/Suburb Example | Rural Example |
|---|---|---|---|---|
| Level 1 | Major cities/ Province | 台灣 |
台灣 |
台灣 |
| Level 2 | City/County | 台北市 | 新竹市 | 雲林縣 |
| Level 3 | Town, District, Neighborhood etc. | 松山區 | 東區 | 崙背鄉 |
| Area |
Area |
松山機場 | 新竹科學工業園區 | |
| Level 4 | St./Rd./etc. | 敦化北路 | 新安路 | 崙前溪底 |
| House/Building |
House #/Building #/Building Name |
340號 |
2號 |
45號 |
| Postcode | Postal Code | 105 | 300 | 637 |