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import torch |
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import torch.nn as nn |
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import torch.optim as optim |
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import numpy as np |
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import pandas as pd |
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class Net(nn.Module): |
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def __init__(self, input_shape): |
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super().__init__() |
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self.fc1 = nn.Linear(input_shape, 8) |
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self.fc2 = nn.Linear(8, 4) |
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def forward(self, x): |
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x = torch.sigmoid(self.fc1(x)) |
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x = torch.sigmoid(self.fc2(x)) |
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return x |
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def get_argmax(array): |
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max = 0 |
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index = 0 |
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for i in range(len(array)): |
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if array[i] > max: |
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max = array[i] |
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index = i |
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one_hot = [0, 0, 0, 0] |
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one_hot[index] = 1 |
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return one_hot |
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def get_trainset(dataset, k, n0, x_columns, y_columns): |
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inp = dataset[x_columns] |
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out = dataset[y_columns] |
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col = "day" |
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x = [] |
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y = [] |
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input_shape = 0 |
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output_shape = 0 |
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for player in out["playerID"].unique(): |
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XPlayer = inp[inp["playerID"] == player] |
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YPlayer = out[out["playerID"] == player] |
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for day in YPlayer[col][n0 - 1:]: |
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prev = day - k |
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xprev = XPlayer[XPlayer[col] == prev].drop(columns=[col, "playerID"]).to_numpy() |
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if xprev.shape[0] != 1: |
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continue |
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else: |
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xprev = xprev[0, :] |
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yt = YPlayer[YPlayer[col] == day].drop(columns=[col, "playerID"]).to_numpy()[0, :] |
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if input_shape == 0: |
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input_shape = xprev.shape[0] |
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else: |
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if input_shape != xprev.shape[0]: |
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print("INCONSISTENT INPUT DIMENSION") |
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exit(2) |
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if output_shape == 0: |
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output_shape = yt.shape[0] |
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else: |
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if output_shape != yt.shape[0]: |
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print("INCONSISTENT OUTPUT DIMENSION") |
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exit(2) |
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x.append(xprev) |
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y.append(yt) |
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x = torch.FloatTensor(x) |
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y = np.array(y) |
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return x, y |
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def time_series_sigmoid_classification(steps, dataset, k, n0, x_columns, y_columns): |
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net = Net(1) |
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optimizer = optim.Adam(net.parameters(), lr=.001) |
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loss = nn.CrossEntropyLoss() |
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for step in range(steps): |
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x, y = get_trainset(dataset, k, n0, x_columns, y_columns) |
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pred = net(x) |
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pred = pred.detach().numpy() |
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for row in range(len(pred)): |
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pred[row] = get_argmax(pred[row]) |
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net_loss = loss(pred, y) |
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net_loss.backward() |
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optimizer.step() |
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print("Loss at Step {}: {}".format(step, net_loss)) |
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def accuracy(net, x, y): |
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pred = net(x) |
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pred = pred.detach().numpy() |
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total = len(pred) |
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correct = 0 |
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for i in range(len(pred)): |
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equal = True |
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for j in range(len(pred[i])): |
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if pred[i][j] != y[i][j]: |
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equal = False |
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if equal: |
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correct += 1 |
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accuracy = (correct / total) * 100 |
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print("Accuracy for set: {}%".format(accuracy)) |
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def main(): |
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filename = "personal.csv" |
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df = pd.read_csv(filename) |
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x = ["day", "playerID", "fatigueSliding"] |
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y = ["day", "playerID", "BestOutOfMyselfAbsolutely", "BestOutOfMyselfSomewhat", "BestOutOfMyselfNotAtAll", "BestOutOfMyselfUnknown"] |
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time_series_sigmoid_classification(100, df, 0, 30, x, y) |
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if __name__ == '__main__': |
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main() |