Table 3. Value of each field. Alone shows the accuracy and success rate of estimation using that field alone, while Improvement shows the mean improvement when adding a field to each combination of other fields (in both cases, positive indicates improvement). For example, adding user location to some combination of the other four fields will, on average, decrease MCAE by 1,255 km and increase the success rate by 1.7 percentage points.
| Field | Alone | Improvement | ||
|---|---|---|---|---|
| MCAE | success | MCAE | success | |
|
|
|
|
||
| user location | 2125 | 65.8% | 1255 | 1.7% |
| user time zone | 2945 | 76.1% | 910 | 3.0% |
| tweet text | 3855 | 95.7% | 610 | 7.3% |
| user description | 4482 | 79.7% | 221 | 3.3% |
| user language | 6143 | 100.0% | −103 | 8.5% |