def update_ranks(players, ranks):
""" Update skills based on ranks from a match """
teams = [skills.Team({player.name: skills.GaussianRating(player.mu, player.sigma)}) for player in players]
match = skills.Match(teams, ranks)
calc = trueskill.FactorGraphTrueSkillCalculator()
game_info = trueskill.TrueSkillGameInfo()
updated = calc.new_ratings(match, game_info)
print ("Updating ranks")
for team in updated:
for i in team.keys():
skill_data = team[i]
update_player_skill(players, i, skill_data)
def update_skills(players, ranks):
""" Update player skills based on ranks from a match """
teams = [skills.Team({player.name: skills.GaussianRating(player.mu, player.sigma)}) for player in players]
match = skills.Match(teams, ranks)
calc = trueskill.FactorGraphTrueSkillCalculator()
game_info = trueskill.TrueSkillGameInfo()
updated = calc.new_ratings(match, game_info)
for team in updated:
player_name, skill_data = next(iter(team.items())) #in Halite, teams will always be a team of one player
player = next(player for player in players if player.name == str(player_name)) #this suggests that players should be a dictionary instead of a list
player.mu = skill_data.mean
player.sigma = skill_data.stdev
player.update_skill()
print("skill = %4f mu = %3f sigma = %3f name = %s" % (player.skill, player.mu, player.sigma, str(player_name)))
def update_rating(match_map):
logger.info('Updating ratings for match_map %d' % match_map.pk)
cts = PlayerMatch.objects.filter(match_map=match_map,
first_side=Match.SIDE_CT)
ts = PlayerMatch.objects.filter(match_map=match_map,
first_side=Match.SIDE_T)
if len(cts) == 0:
logger.warning('Got empty CT team for match_map %d' % match_map.pk)
return
if len(ts) == 0:
logger.warning('Got empty T team for match_map %d' % match_map.pk)
return
ct_team = []
for pm in cts:
partial_play = (pm.rounds_won + pm.rounds_lost + pm.rounds_tied) / \
(match_map.score_1 + match_map.score_2)
if partial_play < 0.0001:
partial_play = 0.0001
if partial_play > 1.0:
logger.error('Got partial play percentage > 1 for match_map %d' %
match_map.pk)
partial_play = 1.0
player = skills.Player(player_id=pm.player.pk,
partial_play_percentage=partial_play)
rating = skills.GaussianRating(pm.player.rating,
pm.player.rating_variance)
ct_team.append((
player,
rating,
))
t_team = []
for pm in ts:
partial_play = (pm.rounds_won + pm.rounds_lost + pm.rounds_tied) / \
(match_map.score_1 + match_map.score_2)
if partial_play < 0.0001:
partial_play = 0.0001
if partial_play > 1.0:
logger.error('Got partial play percentage > 1 for match_map %d' %
match_map.pk)
partial_play = 1.0
player = skills.Player(player_id=pm.player.pk,
partial_play_percentage=partial_play)
rating = skills.GaussianRating(pm.player.rating,
pm.player.rating_variance)
t_team.append((
player,
rating,
))
if match_map.score_1 > match_map.score_2:
rank = [1, 2]
elif match_map.score_1 < match_map.score_2:
rank = [2, 1]
else:
rank = [1, 1]
teams = skills.Match([ct_team, t_team], rank=rank)
calc = GpSkillCalculator()
game_info = TrueSkillGameInfo()
new_ratings = calc.new_ratings(teams, game_info)
for team in [cts, ts]:
for pm in team:
player = pm.player
old_skill = player.get_conservative_rating()
rating = new_ratings.rating_by_id(player.pk)
player.rating = rating.mean
player.rating_variance = rating.stdev
player.save()
new_skill = player.get_conservative_rating()
logger.info(
'Player %s: %f -> %f (%+f)' %
(player.fullname, old_skill, new_skill, new_skill - old_skill))