GOCHA

Violation of Strategy Proofness

Profile type: ProfileWithTies
Config: 4 c, 3 v
Parameters: ∅

Violation of Strategy-Proofness for GOCHA under the single-winner set preference.
A voter can benefit by changing their ranking from 3 0 1 2  to 0 2 1 3 .

Original Profile:
+-----+---+-----+
|  1  | 1 |  1  |
+-----+---+-----+
|  2  | 3 | 0 1 |
| 1 3 | 0 |  2  |
|  0  | 1 |  3  |
|     | 2 |     |
+-----+---+-----+
ProfileWithTies([{0: 2, 1: 1, 3: 1, 2: 0}, {2: 3, 1: 2, 0: 1, 3: 0}, {3: 2, 2: 1, 0: 0, 1: 0}], rcounts=[1, 1, 1], cmap={0: 0, 1: 1, 2: 2, 3: 3})

GOCHA winner is {1}

New Profile:
+-----+-----+---+
|  1  |  1  | 1 |
+-----+-----+---+
|  2  | 0 1 | 0 |
| 1 3 |  2  | 2 |
|  0  |  3  | 1 |
|     |     | 3 |
+-----+-----+---+
ProfileWithTies([{0: 2, 1: 1, 3: 1, 2: 0}, {3: 2, 2: 1, 0: 0, 1: 0}, {3: 3, 1: 2, 2: 1, 0: 0}], rcounts=[1, 1, 1], cmap={0: '0', 1: '1', 2: '2', 3: '3'})

GOCHA winner is {0}