Anti-Harassment Tools/SecurePoll Improvements/Test Results/20 6 5000 751478367

Comments
Case: All but one seat filled, two hopeful candidates.

Output of OpenSTV and SecurePoll agree.

Election setup

 * Candidates: 20
 * Seats: 6
 * Votes: 5000

Actual
Output from SecurePoll : array(3) { ["elected"]=> array(6) { [0]=>   int(2) [1]=>   int(4) [2]=>   int(6) [3]=>   int(8) [4]=>   int(19) [5]=>   int(17) } ["eliminated"]=> array(0) { } ["rounds"]=> array(3) { [0]=>   array(8) { ["round"]=> int(1) ["surplus"]=> int(0) ["rankings"]=> array(20) { [1]=>       array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [2]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(857) ["total"]=> int(857) }       [3]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [4]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(857) ["total"]=> int(857) }       [5]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [6]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(858) ["total"]=> int(858) }       [7]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [8]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(857) ["total"]=> int(857) }       [9]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [10]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [11]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [12]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(314) ["total"]=> int(314) }       [13]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [14]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [15]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [16]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [17]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(400) ["total"]=> int(400) }       [18]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [19]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(857) ["total"]=> int(857) }       [20]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }     }      ["totalVotes"]=> int(5000) ["keepFactors"]=> array(20) { [1]=>       int(1) [2]=>       int(1) [3]=>       int(1) [4]=>       int(1) [5]=>       int(1) [6]=>       int(1) [7]=>       int(1) [8]=>       int(1) [9]=>       int(1) [10]=>       int(1) [11]=>       int(1) [12]=>       int(1) [13]=>       int(1) [14]=>       int(1) [15]=>       int(1) [16]=>       int(1) [17]=>       int(1) [18]=>       int(1) [19]=>       int(1) [20]=>       int(1) }     ["quota"]=> int(715) ["elected"]=> array(0) { }     ["eliminated"]=> array(0) { }   }    [1]=>    array(8) { ["round"]=> int(2) ["elected"]=> array(5) { [0]=>       int(2) [1]=>       int(4) [2]=>       int(6) [3]=>       int(8) [4]=>       int(19) }     ["eliminated"]=> array(0) { }     ["surplus"]=> int(711) ["keepFactors"]=> array(20) { [1]=>       int(1) [2]=>       int(1) [3]=>       int(1) [4]=>       int(1) [5]=>       int(1) [6]=>       int(1) [7]=>       int(1) [8]=>       int(1) [9]=>       int(1) [10]=>       int(1) [11]=>       int(1) [12]=>       int(1) [13]=>       int(1) [14]=>       int(1) [15]=>       int(1) [16]=>       int(1) [17]=>       int(1) [18]=>       int(1) [19]=>       int(1) [20]=>       int(1) }     ["quota"]=> int(715) ["rankings"]=> array(20) { [1]=>       array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [2]=>        array(3) { ["votes"]=> int(857) ["earned"]=> int(0) ["total"]=> int(857) }       [3]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [4]=>        array(3) { ["votes"]=> int(857) ["earned"]=> int(0) ["total"]=> int(857) }       [5]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [6]=>        array(3) { ["votes"]=> int(858) ["earned"]=> int(0) ["total"]=> int(858) }       [7]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [8]=>        array(3) { ["votes"]=> int(857) ["earned"]=> int(0) ["total"]=> int(857) }       [9]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [10]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [11]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [12]=>        array(3) { ["votes"]=> int(314) ["earned"]=> int(0) ["total"]=> int(314) }       [13]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [14]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [15]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [16]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [17]=>        array(3) { ["votes"]=> int(400) ["earned"]=> int(0) ["total"]=> int(400) }       [18]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [19]=>        array(3) { ["votes"]=> int(857) ["earned"]=> int(0) ["total"]=> int(857) }       [20]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }     }      ["totalVotes"]=> int(5000) }   [2]=>    array(8) { ["round"]=> int(3) ["elected"]=> array(1) { [4]=>       int(17) }     ["eliminated"]=> array(0) { }     ["surplus"]=> float(335) ["keepFactors"]=> array(20) { [1]=>       int(1) [2]=>       float(0.8343057176196) [3]=>       int(1) [4]=>       float(0.8343057176196) [5]=>       int(1) [6]=>       float(0.83333333333333) [7]=>       int(1) [8]=>       float(0.8343057176196) [9]=>       int(1) [10]=>       int(1) [11]=>       int(1) [12]=>       int(1) [13]=>       int(1) [14]=>       int(1) [15]=>       int(1) [16]=>       int(1) [17]=>       int(1) [18]=>       int(1) [19]=>       float(0.8343057176196) [20]=>       int(1) }     ["quota"]=> int(654) ["rankings"]=> array(20) { [1]=>       array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [2]=>        array(3) { ["votes"]=> int(857) ["earned"]=> float(-142) ["total"]=> float(715) }       [3]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [4]=>        array(3) { ["votes"]=> int(857) ["earned"]=> float(-142) ["total"]=> float(715) }       [5]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [6]=>        array(3) { ["votes"]=> int(858) ["earned"]=> float(-143) ["total"]=> float(715) }       [7]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [8]=>        array(3) { ["votes"]=> int(857) ["earned"]=> float(-142) ["total"]=> float(715) }       [9]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [10]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [11]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [12]=>        array(3) { ["votes"]=> int(314) ["earned"]=> int(0) ["total"]=> int(314) }       [13]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [14]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [15]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [16]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [17]=>        array(3) { ["votes"]=> int(400) ["earned"]=> float(284) ["total"]=> float(684) }       [18]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }       [19]=>        array(3) { ["votes"]=> int(857) ["earned"]=> float(-142) ["total"]=> float(715) }       [20]=>        array(3) { ["votes"]=> int(0) ["earned"]=> int(0) ["total"]=> int(0) }     }      ["totalVotes"]=> float(4573) } } }

Elected

 * 1) "2"
 * 2) "4"
 * 3) "6"
 * 4) "8"
 * 5) "19"
 * 6) "17"

Rounds table
(Results from 00:50, 29 July 2021)

Expected
Output from OpenSTV: Loading ballots from file 20_6_5000_751478367.blt. Ballot file contains 20 candidates and 5000 ballots. No candidates have withdrawn. Ballot file contains 5000 non-empty ballots.

Counting votes for ElectionTitle using Meek STV. 20 candidates running for 6 seats.

R|1         |2          |3          |4          |5          |6 |---+---+---+---+---+--- |7          |8          |9          |10         |11         |12           |---+---+---+---+---+---  |13         |14         |15         |16         |17         |18           |---+---+---+---+---+---  |19         |20         |Exhausted  |Surplus    |Threshold

=
============================================================= 1|  0.000000| 857.000000|   0.000000| 857.000000|   0.000000| 858.000000  |   0.000000| 857.000000|   0.000000|   0.000000|   0.000000| 314.000000  |   0.000000|   0.000000|   0.000000|   0.000000| 400.000000|   0.000000  | 857.000000|   0.000000|   0.000000| 714.571425| 714.285715  |---  | Count of first choices. Candidates 2, 4, 6, 8, and 19 have reached the | threshold and are elected.

=
============================================================= 2|          | 714.286361|           | 714.286361|           | 714.285858  |           | 714.286361|           |           |           | 314.000000  |           |           |           |           | 685.427278|             | 714.286361|           | 429.141420| 338.979792| 652.979798  |---  | Count after transferring surplus votes. Keep factors of candidates who | have exceeded the threshold: 2, 0.833473; 4, 0.833473; 6, 0.832501; 8, | 0.833473; and 19, 0.833473. Candidate 17 has reached the threshold and | is elected.

Winners are 2, 4, 6, 8, 17, and 19.

Files
array ( 12 =>   array ( 'count' => 314, 'rank' => array (     1 => 12,    ), ), 17 =>   array ( 'count' => 400, 'rank' => array (     1 => 17,    ), ), '2_17' =>   array ( 'count' => 857, 'rank' => array (     1 => 2,      2 => 17,    ), ), 19 =>   array ( 'count' => 857, 'rank' => array (     1 => 19,    ), ), '4_17' =>   array ( 'count' => 857, 'rank' => array (     1 => 4,      2 => 17,    ), ), 8 =>   array ( 'count' => 857, 'rank' => array (     1 => 8,    ), ), 6 =>   array ( 'count' => 858, 'rank' => array (     1 => 6,    ), ), )
 * blt: https://github.com/dominic998/SecurePoll-Test-Data/blob/main/test_data/20_6_5000_751478367.blt
 * php:

Environment

 * Where you tested: local docker using phpunit
 * Version of SecurePoll: commit 271145d5f3cae3b0a1b76d0f5dfeb609615d60b7 (patch 16 from https://gerrit.wikimedia.org/r/c/mediawiki/extensions/SecurePoll/+/704454/)