keys = players.keys.sort
size = keys.size
matrix =
- Matrix::Int[*
+ Matrix[*
((0...size).collect do |k|
p1 = keys[k]
p1_hash = players[p1]
row.delete_at(delete_index)
copied_cols << row
end
- new_matrix = Matrix::Int[*copied_cols]
+ new_matrix = Matrix[*copied_cols]
new_keys = @keys.clone
new_keys.delete_at(delete_index)
return WinLossMatrix.new(new_keys, new_matrix)
result = subsets.collect do |keys|
matrix =
- Matrix::Int[*
+ Matrix[*
((0...keys.size).collect do |k|
p1 = @keys.index(keys[k])
((0...keys.size).collect do |j|
# Main methods
#
-def _add_win_loss(winner, loser)
+# Half-life effect
+# After NHAFE_LIFE days value will get half.
+# 0.693 is constant, where exp(0.693) ~ 0.5
+NHAFE_LIFE=60
+def half_life(days)
+ if days < 7
+ return 1.0
+ else
+ Math::exp(-0.693/NHALFE_LIFE*(days-7))
+ end
+end
+
+def _add_win_loss(winner, loser, time)
+ how_long_days = (Time.now - time)/(3600*24)
$players[winner] ||= Hash.new { GSL::Vector[0,0] }
$players[loser] ||= Hash.new { GSL::Vector[0,0] }
- $players[winner][loser] += GSL::Vector[1,0]
- $players[loser][winner] += GSL::Vector[0,1]
+ $players[winner][loser] += GSL::Vector[1.0*half_life(how_long_days),0]
+ $players[loser][winner] += GSL::Vector[0,1.0*half_life(how_long_days)]
end
def _add_time(player, time)
def add(black_mark, black_name, white_name, white_mark, time)
if black_mark == WIN_MARK && white_mark == LOSS_MARK
- _add_win_loss(black_name, white_name)
+ _add_win_loss(black_name, white_name, time)
elsif black_mark == LOSS_MARK && white_mark == WIN_MARK
- _add_win_loss(white_name, black_name)
+ _add_win_loss(white_name, black_name, time)
elsif black_mark == DRAW_MARK && white_mark == DRAW_MARK
return
else