def __init__(self, allow_draws=False):
if not ENABLED:
self._env = _DummyEnv()
LOGGER.info("Skill module disabled")
elif allow_draws:
self._env = trueskill.TrueSkill(
draw_probability=DEFAULT_DRAW_CHANCE,
backend='mpmath')
LOGGER.info("Created 'draws' model with %s backend, dps %s",
self._env.backend, mpmath.mp.dps)
else:
self._env = trueskill.TrueSkill(draw_probability=0.0,
backend='mpmath')
LOGGER.info("Created 'normal' model with %s backend, dps %s",
self._env.backend, mpmath.mp.dps)
def eval_tsorg(env, pid1, pid2, scores):
nplayers = 1 + max(np.max(pid1), np.max(pid2))
ratings = np.zeros((nplayers, 2), dtype=np.float)
ratings[:, 0] = env[0]
ratings[:, 1] = env[1]
env = ts.TrueSkill(*list(env))
r1_progression = np.zeros((len(pid1), 2), dtype=np.float)
r2_progression = np.zeros((len(pid2), 2), dtype=np.float)
for n in range(len(pid1)):
r1 = env.create_rating(*list(ratings[pid1[n], :]))
r2 = env.create_rating(*list(ratings[pid2[n], :]))
r1_progression[n, :] = ratings[pid1[n], :]
r2_progression[n, :] = ratings[pid2[n], :]
if scores[n] > 0:
r1, r2 = env.rate_1vs1(r1, r2, drawn=False)
elif scores[n] == 0:
r1, r2 = env.rate_1vs1(r1, r2, drawn=True)
else:
r2, r1 = env.rate_1vs1(r2, r1, drawn=False)
ratings[pid1[n], 0] = r1.mu
ratings[pid1[n], 1] = r1.sigma
ratings[pid2[n], 0] = r2.mu
ratings[pid2[n], 1] = r2.sigma
return r1_progression, r2_progression, ratings
def multiplayer_trueskill_applier(df, race_id_col, player1_col, player2_col, starting_mu=25.0, starting_std=25.0/3.0):
env = trueskill.TrueSkill(draw_probability=0.015)
# Get a list of unique players
unique_players = df[player1_col].unique().tolist() + df[player2_col].unique().tolist()
# Initialise a dictionary with default elos for each player
ratings_dict = {team: Rating(mu=starting_mu, sigma=starting_std) for team in unique_players}
# Create dict where we will update based on the race_id and horse_id
before_game_ratings = []
after_game_ratings = []
# Loop over races in each group
for idx, row in df.iterrows():
before_game_ratings.append([ratings_dict[row[player1_col]], ratings_dict[row[player2_col]]])
if row.winner_1 == 1:
new_r1, new_r2 = trueskill.rate_1vs1(ratings_dict[row[player1_col]], ratings_dict[row[player2_col]])
ratings_dict[row[player1_col]] = new_r1
ratings_dict[row[player2_col]] = new_r2
elif row.winner_2 == 1:
new_r1, new_r2 = trueskill.rate_1vs1(ratings_dict[row[player2_col]], ratings_dict[row[player1_col]])
ratings_dict[row[player1_col]] = new_r2
ratings_dict[row[player2_col]] = new_r1
elif row.draw == 1:
new_r1, new_r2 = trueskill.rate_1vs1(ratings_dict[row[player1_col]], ratings_dict[row[player2_col]], drawn=True)
ratings_dict[row[player1_col]] = new_r1
ratings_dict[row[player2_col]] = new_r2
else:
print('error')
after_game_ratings.append([ratings_dict[row[player1_col]], ratings_dict[row[player2_col]]])
return before_game_ratings, after_game_ratings, ratings_dict
def win_probability(team1, team2):
delta_mu = sum(r.mu for r in team1) - sum(r.mu for r in team2)
sum_sigma = sum(r.sigma**2 for r in itertools.chain(team1, team2))
size = len(team1) + len(team2)
TS = ts.TrueSkill()
denom = math.sqrt(size * (ts.BETA * ts.BETA) + sum_sigma)
return TS.cdf(delta_mu / denom)
def Pwin_singles_lowsigma(self, name1, name2):
"""
Useful for when both players have a low uncertainty (sigma < 2)
and in professional matches, where absolute differences in skill are less
Uses an original empirical formula calibrated on all professional games from BWF website
before and during 2017.
"""
rA = self.ratings[name1]
rB = self.ratings[name2]
deltaMu = rA.mu - rB.mu
rsss = math.sqrt(rA.sigma**2 + rB.sigma**2)
trueskill_winprob = trueskill.TrueSkill().cdf(deltaMu / rsss)
if ((ndtri(trueskill_winprob) /
(np.exp(-(rsss / 2.0) + 3.8) + 1) + 0.5) > 0.0
and (ndtri(trueskill_winprob) /
(np.exp(-(rsss / 2.0) + 3.8) + 1) + 0.5) < 1):
return ndtri(trueskill_winprob) / (
np.exp(-(rsss / 2.0) + 3.8) + 1
) + 0.5 #scaled with best fit probit function (created using historical bwf data)
elif ((ndtri(trueskill_winprob) /
(np.exp(-(rsss / 2.0) + 3.8) + 1) + 0.5) < 0.0):
return 0.0
elif ((ndtri(trueskill_winprob) /
(np.exp(-(rsss / 2.0) + 3.8) + 1) + 0.5) > 1.0):
return 1.0
def get_skill_ranking(rounds):
"""
Returns an array of player rankings from calculated skill.
rounds is an iterable of pairs, where first element is a list of winning team members,
and seconds is a list of losing team members
"""
skiller = trueskill.TrueSkill(draw_probability=0)
players = defaultdict(skiller.create_rating)
for (winners, losers) in rounds:
win_team = [players[p] for p in winners]
lose_team = [players[p] for p in losers]
if len(win_team) and len(lose_team):
(win_team_rated,
lose_team_rated) = skiller.rate([win_team, lose_team], [0, 1])
for (player_id, rating) in zip(winners, win_team_rated):
players[player_id] = rating
for (player_id, rating) in zip(losers, lose_team_rated):
players[player_id] = rating
leaderboard = [p for p in players.items()]
leaderboard.sort(key=lambda x: skiller.expose(x[1]), reverse=True)
return leaderboard
def Pwin_singles(self, name1, name2):
"""
Win probability in singles
"""
rA = self.ratings[name1]
rB = self.ratings[name2]
deltaMu = rA.mu - rB.mu
rsss = math.sqrt(rA.sigma**2 + rB.sigma**2)
return trueskill.TrueSkill().cdf(deltaMu / rsss)
def __init__(self, name):
self.name = name
self.rankingParam = dict()
self.importedFiles = dict()
self.namesDict = dict()
self.ratingHist = dict()
self.scoreHist = dict()
self.env = trueskill.TrueSkill()
self.namesDictInv = dict()
def env(self):
if self._env is None:
self._env = trueskill.TrueSkill(
mu=self.mu,
sigma=self.sigma,
beta=self.beta,
tau=self.tau,
draw_probability=self.draw_probability)
return self._env
def trueskill_environ(self):
return trueskill.TrueSkill(
mu=self.mu,
sigma=self.sigma,
beta=self.beta,
tau=self.tau,
draw_probability=self.draw_probability,
backend='scipy'
)
def team_score_trueskill(ranks, team):
team = team[team != 0]
scores = [ranks.get(member, None) for member in team]
# ignore players not in the ranks
scores = np.array(scores)
scores_mask = [False if score is None else True for score in scores]
scores = scores[scores_mask]
if len(scores) is 0:
return trueskill.TrueSkill(mu=MU, sigma=SIGMA).create_rating()
mean_mu = np.mean([score.mu for score in scores])
mean_var = np.sum([score.sigma**2 for sigma in scores]) / (len(scores)**2)
mean_sigma = np.sqrt(mean_var)
return trueskill.TrueSkill().create_rating(mean_mu, mean_sigma)
def ts_update_error(x, rA1, rA2, rB1, rB2, scoreA):
(beta, tau, dp) = x
env = trueskill.TrueSkill(beta=beta, tau=tau,
draw_probability=dp,
backend='mpmath')
tss = TrueSkillSystem('trueskill', env)
(rAp, rBp) = tss.rate2p(rA1, rB1, scoreA)
err = math.sqrt(distance(rAp, rA2)**2 + distance(rBp, rB2)**2)
return err
def Pwin_doubles(self, name1, name2, name3, name4):
"""
Win probability for a doubles pair
"""
rAlist = [self.ratings[name1], self.ratings[name2]]
rBlist = [self.ratings[name3], self.ratings[name4]]
deltaMu = sum([x.mu for x in rAlist]) - sum([x.mu for x in rBlist])
rsss = math.sqrt(
sum([x.sigma**2
for x in rAlist]) + sum([x.sigma**2 for x in rBlist]))
return trueskill.TrueSkill().cdf(deltaMu / rsss)
def get_trueskill_environment(self, rating_type):
trueskill_environment = self.trueskill_environment_lookup.get(rating_type.name)
if trueskill_environment:
return trueskill_environment
trueskill_environment = trueskill.TrueSkill(
beta=trueskill.SIGMA,
draw_probability=Logs2DB.rating_type_to_draw_probability[rating_type.name],
)
self.trueskill_environment_lookup[rating_type.name] = trueskill_environment
return trueskill_environment
def doRating(dfResults):
env = ts.TrueSkill()
ts.setup(tau=0.2)
columns = ['Name', 'mu_minus_3sigma', 'numRaces', 'Rating']
dfRatings = pd.DataFrame(columns=columns, index=dfResults.index)
dfRatings = pd.merge(dfRatings,
dfResults[['numRegattas', 'lastRegatta']],
left_index=True,
right_index=True,
how='outer')
dfRatings['numRaces'] = dfResults.count(axis=1)
dfRatings['Rating'] = pd.Series(np.repeat(
env.Rating(), len(dfRatings))).T.values.tolist()
for raceCol in dfResults:
if (raceCol != 'numRegattas') or (raceCol != 'lastRegatta'):
competed = dfRatings.index.isin(
dfResults.index[dfResults[raceCol].notnull()])
rating_group = list(
zip(dfRatings['Rating'][competed].T.values.tolist()))
ranking_for_rating_group = dfResults[raceCol][
competed].T.values.tolist()
dfRatings.loc[competed,
'Rating'] = ts.rate(rating_group,
ranks=ranking_for_rating_group)
dfRatings = pd.DataFrame(dfRatings) #convert to dataframe
dfRatings['mu_minus_3sigma'] = pd.Series(np.repeat(
0.0, len(dfRatings))) #calculate mu - 3 x sigma: MSFT convention
for index, row in dfRatings.iterrows():
dfRatings.loc[dfRatings.index == index, 'mu_minus_3sigma'] = float(
row['Rating'].mu) - 3 * float(row['Rating'].sigma)
#competed in at least 5 races and 1 regatta and has competed in the last 12 months
dfRatings = dfRatings[dfRatings['numRaces'] > 4]
dfRatings = dfRatings[dfRatings['numRegattas'] > 1]
dfRatings = dfRatings[
(datetime.datetime.now() - dfRatings['lastRegatta']) /
np.timedelta64(1, 'D') < 365]
dfRatings['Name'] = dfRatings.index
dfRatings.index = dfRatings['mu_minus_3sigma'].rank(
ascending=False).astype(int) #set index to ranking
dfRatings.index.names = ['Rank']
return dfRatings.sort_values('mu_minus_3sigma', ascending=False)
def __init__(self, player_manager,
mu=25, sigma=25/3, beta=25/6, tau=25/300):
self.player_manager = player_manager
self.rank_to_player = OrderedDict()
self.player_to_rank = {}
self.wins = {}
self.ts_env = trueskill.TrueSkill(
draw_probability=0.0,
mu=mu,
sigma=sigma,
beta=beta,
tau=tau)
self.ts_env.make_as_global()
def __init__(self,
name,
daily_sigma_decay=0,
k=3,
established_sigma=None,
**kwargs):
super(TrueSkillSystem, self).__init__(name)
self.env = trueskill.TrueSkill(**kwargs)
self.daily_sigma_decay = daily_sigma_decay
self.established_sigma = established_sigma
self.k = k
self.two_p_draw_margin = trueskill.calc_draw_margin(
self.env.draw_probability, 2, env=self.env)
def __init__(self):
with open('auth.json', 'r') as auth_file:
cred = json.load(auth_file)
self.cred = service_account.Credentials.from_service_account_info(
cred)
self.proj = cred['project_id']
self.tsdb = sqlite3.connect("Data/TrueSkill.sqlite")
self.tsrate = trueskill.TrueSkill(backend='mpmath',
draw_probability=0.2)
self.oriday = date(2008, 7, 31)
self.fresh = trueskill.Rating(8.3333, 2.7778)
self.tags = self._query(TAGS.format(self.proj))
tqdm.write("-" * 50 + "\nTrueSkill Runner")
def __init__(self, run_folder, self_play):
self.run_folder = run_folder
# Server from SEPIA
self.server = EnvironmentServiceImpl(self.env_callback,
self.winner_callback)
# Which two agents are currently being played against each other
self.active_agents = [0, 0]
# List of agents in tournament. Will be ~50MB total
self.agents = []
# List of agent associated data, such as names, used for saving later
self.agents_data = []
# Trueskill ratings for each agent
self.ratings = []
# How many times each agent as been played against each other
self.trials = 0
# How many total trials to do before we are done
self.num_trials = 200
# True if player 1 is a sepia agent, not another one of our agents
self.playing_against_sepia = not self_play
# How many game steps have occurred
self.iterations = 0
# Start time of run
self.start_time = time.time()
# Load agents from disk
self.load_agents()
# Wins, losses, ties
self.win_stats = np.zeros((len(self.agents), 3))
# Set up the trueskill environment and make it a global env
env = trueskill.TrueSkill(mu=25.0,
sigma=8.33,
beta=4.17,
tau=0,
draw_probability=0.05)
env.make_as_global()
# Initialize ratings to be all the same
self.ratings = [trueskill.Rating() for _ in range(len(self.agents))]
self.sepia_rating = trueskill.Rating(30, 0.00000000001)
def __init__(self, chat_id, conn=None, db_dir=None):
# TODO Keep a rating snap-shot in database, to allow rollbacks.
# TODO Script to recalculate the rankings from matches.
self.chat_id = chat_id
self.db_dir = db_dir
if db_dir is None:
# Default
self.db_dir = Ranking.DB_DEFAULT
elif not os.path.isdir(self.db_dir):
logging.log(
logging.WARNING,
"db_dir was not a directory, defaulting to {}".format(
Ranking.DB_DEFAULT))
self.db_dir = Ranking.DB_DEFAULT
# TODO No need to keep all of the games in memory, keep current ranking in memory
self.singles = []
self.duals = []
self.known_users = {}
self.user_to_id = {}
self.ratings = {}
self.trueskill_env = trueskill.TrueSkill(mu=25,
sigma=8.333333333333334,
beta=4.166666666666667,
tau=0.08333333333333334,
draw_probability=0.0)
# TODO Include leaderboard to be kept in memory
self.rate_limits = {}
self.rate_limit = 5
if conn is None:
cid = int(self.chat_id)
str_chat = str(cid)
db_name = str_chat if str_chat[0] != "-" else "a" + str_chat[1:]
db_fp = os.path.join(self.db_dir, db_name + ".db")
self.__conn = sqlite3.connect(db_fp)
else:
self.__conn = conn
self.__c = self.__conn.cursor()
self._load_from_db()
def evalBattle(path, matchCount=18):
dataSet = open(path).read().split('\n')
random.shuffle(dataSet)
cnt = len(dataSet)
manager = Manager()
evalData = manager.list()
que = []
for i in range(cnt):
for j in range(matchCount // 2):
if i + j == cnt - 1:
break
que.append(
[evalData, i, i + j + 1, dataSet[i], dataSet[i + j + 1]])
if i < matchCount // 2:
for j in range(matchCount // 2 - i):
que.append([
evalData, i, cnt - j - 1, dataSet[i], dataSet[cnt - j - 1]
])
# s = time()
core = cpu_count()
p = Pool(core)
s = time()
print('start time:', datetime.datetime.now())
print('length:', len(que))
p.map(wrapper, que)
print('end time:', datetime.datetime.now())
print('took time:', time() - s)
env = trueskill.TrueSkill(beta=5, draw_probability=0)
players = [env.create_rating()] * cnt
for i in evalData:
players[i[0]], players[i[1]] = trueskill.rate_1vs1(
players[i[0]], players[i[1]])
mulist = [mu.mu for mu in players]
dataSet = [str(mu) + poke for mu, poke in zip(mulist, dataSet)]
dataSet = [i.split('|') for i in dataSet]
dataSet = sorted(dataSet, key=lambda x: (x[1], float(x[0])), reverse=True)
# priority: pokemon's Name > rating
dataSet = ['|'.join(i) for i in dataSet]
return dataSet
def goko_variant(name,
beta_factor=1,
tau_factor=1,
draw_prob=0.05,
decay=0.01):
return BoundedTrueSkillSystem('Goko %s' % name,
trueskill.TrueSkill(
mu=5500,
sigma=2250,
beta=beta_factor * 1375,
tau=tau_factor * 27.5,
draw_probability=draw_prob,
backend='scipy'),
mu_lower_bound=0,
daily_sigma_decay=decay)
def __init__(self, *, margin, sigma, tau):
self.env = ts.TrueSkill(
# Initial mean of rating.
mu=0.0,
# Initial std. dev. of rating.
sigma=sigma,
# Scales the sigmoid function (denominator is sqrt(2) * beta).
beta=1 / sqrt(2.0),
# Std. dev. of brownian dynamics.
tau=tau,
# Draw probability if skill difference is 0.
draw_probability=(2 * ndtr(margin) - 1.0),
)
self.margin = margin
self.rating = collections.defaultdict(self.env.create_rating)
def isotropish_variant(name,
beta_multiplier=1,
sigma_multiplier=1,
tau_multiplier=1,
noise_factor=0,
draw_prob=0.05):
return NoisyTrueSkillSystem(
'Isotropish %s' % name,
trueskill.TrueSkill(mu=25,
sigma=sigma_multiplier * 25,
beta=25 * beta_multiplier,
tau=tau_multiplier * sigma_multiplier * 25 / 100,
draw_probability=draw_prob,
backend='scipy'),
noise_factor=noise_factor)
def get_leaderboard(guildid):
'''
Gets list of userids and TrueSkill ratings, sorted by current rating
:return: list of (userid, TrueSkill.Rating) tuples, sorted by rating
'''
with shelve.open(str(guildid), writeback=True) as db:
if 'ratings' in db:
ratings = {
id: ts.TrueSkill(db['ratings'][id][0], db['ratings'][id][1])
for id in db['ratings']
}
#ratings = {id : get_skill(id, guildid) for id in db['ratings'].keys()}
return sorted(ratings.items(),
key=lambda x: (x[1].mu, -x[1].sigma),
reverse=True)
return None
def win_probability(team1, team2):
# delta_mu = team1['mu'] - team2['mu']
delta_mu = team1.mu - team2.mu
# delta_mu = sum(r.mu for r in team1) - sum(r.mu for r in team2)
# sum_sigma = sum(r.sigma ** 2 for r in itertools.chain(team1, team2))
# sum_sigma = team1['sigma']**2 + team2['sigma']**2
sum_sigma = team1.sigma**2 + team2.sigma**2
# return trueskill.TrueSkill().cdf(delta_mu/sum_sigma)
#normDist = scipy.stats.norm(delta_mu, sum_sigma).cdf(0)
# size = len(team1) + len(team2)
# size = 2
denom = math.sqrt(2 * trueskill.BETA**2 + sum_sigma)
# print delta_mu, denom
# return normDist
# ts = trueskill.global_env()
return trueskill.TrueSkill().cdf(delta_mu / denom)
def score_horses():
db = MongoClient().racing
cache = {}
query = {
"status": "downloaded",
"results_extracted": { "$exists": True },
"ratings_calculated": { "$exists": False },
"$where": "this.results.length > 4"
}
warm_cache(db, cache)
env = trueskill.TrueSkill()
cursor = db.races.find(query,no_cursor_timeout=True).sort("race_date", 1).batch_size(500)
for race in cursor:
rating_groups = []
runner_groups = []
non_finisher_runner_group = []
non_finisher_ratings = []
for runner in race["results"]:
rating = get_rating(db, cache, runner["hid"])
if is_finisher(runner):
runner_groups.append((runner,))
if rating == None:
rating_groups.append((env.create_rating(),))
else:
rating_groups.append((env.create_rating(rating["mu"], rating["sigma"]),))
else:
non_finisher_runner_group.append(runner)
if rating == None:
non_finisher_ratings.append(env.create_rating())
else:
non_finisher_ratings.append(env.create_rating(rating["mu"], rating["sigma"]))
if len(non_finisher_runner_group) > 0:
runner_groups.append(tuple(non_finisher_runner_group))
rating_groups.append(tuple(non_finisher_ratings))
if len(runner_groups) >= 2:
rated_rating_groups = env.rate(rating_groups)
for runner_group, rating_group in zip(runner_groups, rated_rating_groups):
for runner, rating in zip(runner_group, rating_group):
save_rating(db, cache, {"hid": runner["hid"],
"date": race["race_date"],
"mu": rating.mu,
"sigma": rating.sigma})
race["ratings_calculated"] = True
db.races.save(race)
cursor.close()
def create_trueskill():
mu = MU
sigma = SIGMA
beta = sigma / 2.
tau = sigma / 100.
# draw_probability = 0.1
draw_probability = 0 #warzoneではほぼ引き分けは無いに等しいのでデフォルト値から変更
backend = None
env = trueskill.TrueSkill(mu=mu,
sigma=sigma,
beta=beta,
tau=tau,
draw_probability=draw_probability,
backend=backend)
return env
def trueskill_rank(match_history, players, mu=5.00, sigma=.5):
'''
https://www.kaggle.com/devinanzelmo/dota-2-skill-rating-with-trueskill
'''
ts = trueskill.TrueSkill(draw_probability=0, mu=mu, sigma=sigma)
# need to create a dictionary for all players containting the ratings
rating_dict = {account_id: ts.create_rating() for account_id in players}
rating_dict[0] = ts.create_rating(mu=0, sigma=10)
for n, row in match_history.iterrows():
radiance = row[['player0', 'player1', 'player2', 'player3', 'player4']]
dire = row[['player5', 'player6', 'player7', 'player8', 'player9']]
# ignore the anonymous players
radiance = radiance[radiance > 0]
dire = dire[dire > 0]
if radiance.empty or dire.empty:
continue
rad_dict = {
account_id: rating_dict[account_id]
for account_id in radiance
}
dire_dict = {
account_id: rating_dict[account_id]
for account_id in dire
}
new_rad, new_dire = ts.rate([rad_dict, dire_dict], ranks=[1, 0])
for account_id in new_rad.keys():
rating_dict[account_id] = new_rad[account_id]
for account_id in new_dire.keys():
rating_dict[account_id] = new_dire[account_id]
return [rating.mu for rating in rating_dict.values()
], [rating.sigma for rating in rating_dict.values()]
def run_evaluation(connection, beta, tau, sample):
teams = get_all_teams(connection)
rounds = get_all_rounds(connection, None)
offset = int(len(rounds) * sample)
training_sample = rounds[:offset]
testing_sample = rounds[offset:]
environment = trueskill.TrueSkill(SKILL_MEAN, SKILL_STDEV, beta, tau, 0.0)
ratings = compute_player_skills(training_sample, teams)[0]
total = 1.0
for round in testing_sample:
winning_team = [ratings[player_id]
for player_id in teams[round['winner']]]
losing_team = [ratings[player_id]
for player_id in teams[round['loser']]]
total *= win_probability(environment, winning_team, losing_team)
return total ** (1 / float(len(testing_sample)))