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finished Analysis docstrings,
removed typehinting to rework
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@ -380,7 +380,6 @@ import numpy as np
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import scipy
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import sklearn, sklearn.cluster
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from tra_analysis.metrics import trueskill as Trueskill
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from tra_analysis.typedef import R, List, Dict
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# import submodules
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@ -389,7 +388,7 @@ from .ClassificationMetric import ClassificationMetric
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class error(ValueError):
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pass
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def load_csv(filepath: str) -> np.ndarray:
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def load_csv(filepath):
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"""
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Loads csv file into 2D numpy array. Does not check csv file validity.
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parameters:
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@ -402,9 +401,9 @@ def load_csv(filepath: str) -> np.ndarray:
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csvfile.close()
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return file_array
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def basic_stats(data: List[R]) -> Dict[str, R]:
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def basic_stats(data):
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"""
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Calculates mean, median, standard deviation, variance, minimum, maximum of a simple set of elements
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Calculates mean, median, standard deviation, variance, minimum, maximum of a simple set of elements.
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parameters:
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data: List representing set of unordered elements
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return:
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@ -421,9 +420,9 @@ def basic_stats(data: List[R]) -> Dict[str, R]:
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return {"mean": _mean, "median": _median, "standard-deviation": _stdev, "variance": _variance, "minimum": _min, "maximum": _max}
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def z_score(point: R, mean: R, stdev: R) -> R:
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def z_score(point, mean, stdev):
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"""
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Calculates z score of a specific point given mean and standard deviation of data
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Calculates z score of a specific point given mean and standard deviation of data.
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parameters:
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point: Real value corresponding to a single point of data
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mean: Real value corresponding to the mean of the dataset
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@ -437,7 +436,14 @@ def z_score(point: R, mean: R, stdev: R) -> R:
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# expects 2d array, normalizes across all axes
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def z_normalize(array, *args):
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"""
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Applies sklearn.normalize(array, axis = args) on any arraylike parseable by numpy.
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parameters:
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array: array like structure of reals aka nested indexables
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*args: arguments relating to axis normalized against
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return:
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numpy array of normalized values from ArrayLike input
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"""
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array = np.array(array)
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for arg in args:
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array = sklearn.preprocessing.normalize(array, axis = arg)
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@ -446,7 +452,13 @@ def z_normalize(array, *args):
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# expects 2d array of [x,y]
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def histo_analysis(hist_data):
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"""
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Calculates the mean and standard deviation of derivatives of (x,y) points. Requires at least 2 points to compute.
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parameters:
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hist_data: list of real coordinate point data (x, y)
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return:
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Dictionary with (mean, deviation) as keys to corresponding values
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"""
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if len(hist_data[0]) > 2:
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hist_data = np.array(hist_data)
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@ -462,7 +474,15 @@ def histo_analysis(hist_data):
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return None
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def regression(inputs, outputs, args): # inputs, outputs expects N-D array
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"""
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Applies specified regression kernels onto input, output data pairs.
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parameters:
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inputs: List of Reals representing independent variable values of each point
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outputs: List of Reals representing dependent variable values of each point
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args: List of Strings from values (lin, log, exp, ply, sig)
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return:
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Dictionary with keys (lin, log, exp, ply, sig) as keys to correspondiong regression models
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"""
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X = np.array(inputs)
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y = np.array(outputs)
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@ -566,13 +586,39 @@ def regression(inputs, outputs, args): # inputs, outputs expects N-D array
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return regressions
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class Metric:
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"""
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The metric class wraps the metrics models. Call without instantiation as Metric.<method>(...)
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"""
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def elo(self, starting_score, opposing_score, observed, N, K):
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"""
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Calculates an elo adjusted ELO score given a player's current score, opponent's score, and outcome of match.
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reference: https://en.wikipedia.org/wiki/Elo_rating_system
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parameters:
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starting_score: Real value representing player's ELO score before a match
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opposing_score: Real value representing opponent's score before the match
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observed: Array of Real values representing multiple sequential match outcomes against the same opponent. 1 for match win, 0.5 for tie, 0 for loss.
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N: Real value representing the normal or mean score expected (usually 1200)
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K: R eal value representing a system constant, determines how quickly players will change scores (usually 24)
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return:
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Real value representing the player's new ELO score
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"""
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return Elo.calculate(starting_score, opposing_score, observed, N, K)
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def glicko2(self, starting_score, starting_rd, starting_vol, opposing_score, opposing_rd, observations):
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"""
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Calculates an adjusted Glicko-2 score given a player's current score, multiple opponent's score, and outcome of several matches.
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reference: http://www.glicko.net/glicko/glicko2.pdf
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parameters:
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starting_score: Real value representing the player's Glicko-2 score
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starting_rd: Real value representing the player's RD
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starting_vol: Real value representing the player's volatility
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opposing_score: List of Real values representing multiple opponent's Glicko-2 scores
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opposing_rd: List of Real values representing multiple opponent's RD
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opposing_vol: List of Real values representing multiple opponent's volatility
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observations: List of Real values representing the outcome of several matches, where each match's opponent corresponds with the opposing_score, opposing_rd, opposing_vol values of the same indesx. Outcomes can be a score, presuming greater score is better.
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return:
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Tuple of 3 Real values representing the player's new score, rd, and vol
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"""
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player = Glicko2.Glicko2(rating = starting_score, rd = starting_rd, vol = starting_vol)
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player.update_player([x for x in opposing_score], [x for x in opposing_rd], observations)
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@ -580,7 +626,15 @@ class Metric:
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return (player.rating, player.rd, player.vol)
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def trueskill(self, teams_data, observations): # teams_data is array of array of tuples ie. [[(mu, sigma), (mu, sigma), (mu, sigma)], [(mu, sigma), (mu, sigma), (mu, sigma)]]
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"""
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Calculates the score changes for multiple teams playing in a single match accoding to the trueskill algorithm.
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reference: https://trueskill.org/
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parameters:
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teams_data: List of List of Tuples of 2 Real values representing multiple player ratings. List of teams, which is a List of players. Each player rating is a Tuple of 2 Real values (mu, sigma).
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observations: List of Real values representing the match outcome. Each value in the List is the score corresponding to the team at the same index in teams_data.
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return:
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List of List of Tuples of 2 Real values representing new player ratings. Same structure as teams_data.
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"""
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team_ratings = []
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for team in teams_data:
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@ -617,13 +671,30 @@ def npmax(data):
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return np.amax(data)
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def pca(data, n_components = None, copy = True, whiten = False, svd_solver = "auto", tol = 0.0, iterated_power = "auto", random_state = None):
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"""
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Performs a principle component analysis on the input data.
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reference: https://scikit-learn.org/stable/modules/generated/sklearn.decomposition.PCA.html
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parameters:
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data: Arraylike of Reals representing the set of data to perform PCA on
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* : refer to reference for usage, parameters follow same usage
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return:
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Arraylike of Reals representing the set of data that has had PCA performed. The dimensionality of the Arraylike may be smaller or equal.
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"""
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kernel = sklearn.decomposition.PCA(n_components = n_components, copy = copy, whiten = whiten, svd_solver = svd_solver, tol = tol, iterated_power = iterated_power, random_state = random_state)
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return kernel.fit_transform(data)
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def decisiontree(data, labels, test_size = 0.3, criterion = "gini", splitter = "default", max_depth = None): #expects *2d data and 1d labels
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"""
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Generates a decision tree classifier fitted to the given data.
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reference: https://scikit-learn.org/stable/modules/generated/sklearn.tree.DecisionTreeClassifier.html
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parameters:
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data: List of values representing each data point of multiple axes
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labels: List of values represeing the labels corresponding to the same index at data
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* : refer to reference for usage, parameters follow same usage
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return:
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DecisionTreeClassifier model and corresponding classification accuracy metrics
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"""
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data_train, data_test, labels_train, labels_test = sklearn.model_selection.train_test_split(data, labels, test_size=test_size, random_state=1)
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model = sklearn.tree.DecisionTreeClassifier(criterion = criterion, splitter = splitter, max_depth = max_depth)
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model = model.fit(data_train,labels_train)
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@ -74,5 +74,3 @@ from .RegressionMetric import RegressionMetric
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from . import Sort
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from . import StatisticalTest
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from . import SVM
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from . import typedef
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@ -1,4 +0,0 @@
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from typing import TypeVar, List, Dict
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List = List
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Dict = Dict
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R = TypeVar('R', int, float)
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