From: Street masking: a network-based geographic mask for easily protecting geoprivacy
Mask & parameters | K-anonymity | Displacement distance (m) | Landcover agreement | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Area | Mask | Params | K-25 | K-50 | K-100 | K-200 | Avg | Med | Min | Max | % of Points |
Vancouver, n = 7206 | Street | 10 | 94.4 | 79.7 | 50.5 | 16.2 | 168.8 | 166.9 | 38.0 | 536.3 | 83.4 |
 Dist-based donut | 225 | 94.0 | 82.6 | 55.0 | 10.8 | 168.6 | 175.2 | 57.4 | 225.0 | 83.9 | |
 Pop-based donut | 700 | 94.9 | 85.3 | 52.2 | 8.0 | 174.0 | 160.9 | 30.5 | 2814.0 | 84.9 | |
Street | 20 | 98.6 | 93.7 | 77.5 | 40.7 | 220.7 | 216.6 | 36.7 | 720.8 | 82.7 | |
 Dist-based donut | 275 | 97.2 | 91.0 | 73.0 | 36.6 | 206.8 | 215.4 | 73.0 | 274.9 | 82.3 | |
 Pop-based donut | 1200 | 98.0 | 94.1 | 80.2 | 39.3 | 228.3 | 210.7 | 52.9 | 4259.6 | 83.0 | |
Street | 30 | 99.0 | 96.6 | 88.2 | 64.7 | 270.2 | 271.1 | 36.7 | 949.8 | 79.7 | |
 Dist-based donut | 350 | 98.6 | 95.6 | 86.3 | 62.3 | 261.9 | 270.8 | 90.5 | 350.0 | 81.6 | |
 Pop-based donut | 2000 | 98.9 | 97.0 | 91.2 | 70.7 | 294.3 | 271.3 | 65.2 | 5018.7 | 81.4 | |
Surrey, n = 4614 | Street | 10 | 90.3 | 71.0 | 37.5 | 7.7 | 203.5 | 184.6 | 37.6 | 3946.9 | 90.5 |
 Dist-based donut | 225 | 82.0 | 59.2 | 22.1 | 0.4 | 168.8 | 176.0 | 59.1 | 225.0 | 87.2 | |
 Pop-based donut | 500 | 91.9 | 73.7 | 35.2 | 10.4 | 280.4 | 185.3 | 41.9 | 7720.1 | 85.0 | |
Street | 20 | 97.1 | 89.3 | 68.7 | 30.8 | 279.4 | 255.8 | 44.3 | 3946.9 | 88.8 | |
 Dist-based donut | 325 | 92.0 | 81.4 | 57.7 | 21.5 | 244.6 | 253.8 | 83.5 | 325.0 | 85.0 | |
 Pop-based donut | 1000 | 96.7 | 90.7 | 70.3 | 30.6 | 398.8 | 263.8 | 55.4 | 11165.9 | 81.7 | |
Street | 30 | 97.7 | 93.6 | 81.6 | 50.1 | 332.7 | 309.1 | 47.2 | 4138.3 | 88.4 | |
 Dist-based donut | 375 | 94.1 | 85.4 | 67.6 | 34.7 | 281.5 | 293.7 | 99.5 | 375.0 | 83.7 | |
 Pop-based donut | 1500 | 98.1 | 94.5 | 83.4 | 51.5 | 486.4 | 321.8 | 71.2 | 13731.0 | 79.4 | |
Kamloops, n = 2433 | Street | 10 | 93.3 | 80.3 | 51.5 | 22.0 | 230.7 | 198.2 | 34.1 | 3901.6 | 75.7 |
 Dist-based donut | 250 | 87.1 | 71.3 | 39.8 | 3.7 | 186.9 | 195.3 | 64.0 | 250.0 | 73.6 | |
 Pop-based donut | 400 | 93.7 | 82.4 | 49.6 | 16.7 | 449.8 | 202.8 | 45.4 | 20145.7 | 66.2 | |
Street | 20 | 97.7 | 92.8 | 77.2 | 45.7 | 320.3 | 280.3 | 32.6 | 5123.9 | 70.9 | |
 Dist-based donut | 350 | 93.5 | 83.9 | 64.9 | 31.6 | 260.5 | 270.3 | 90.6 | 349.9 | 68.0 | |
 Pop-based donut | 800 | 97.7 | 92.6 | 79.2 | 45.0 | 637.5 | 288.6 | 63.8 | 27807.6 | 63.2 | |
Street | 30 | 98.7 | 96.2 | 87.7 | 62.9 | 385.7 | 340.6 | 56.3 | 7020.7 | 68.6 | |
 Dist-based donut | 425 | 94.8 | 88.4 | 75.2 | 50.3 | 318.4 | 332.4 | 112.2 | 424.9 | 64.2 | |
 Pop-based donut | 1100 | 97.7 | 94.7 | 86.4 | 59.7 | 752.9 | 339.5 | 111.8 | 34597.7 | 60.8 |