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Add the polynomial kernel to the SVM code #12740

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@WeiYFan WeiYFan commented May 13, 2025

Describe your change:

Add the polynomial kernel to the SVM code

  • [x ] Add an algorithm?
  • Fix a bug or typo in an existing algorithm?
  • Add or change doctests? -- Note: Please avoid changing both code and tests in a single pull request.
  • Documentation change?

Checklist:

  • I have read CONTRIBUTING.md.
  • This pull request is all my own work -- I have not plagiarized.
  • I know that pull requests will not be merged if they fail the automated tests.
  • This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
  • All new Python files are placed inside an existing directory.
  • All filenames are in all lowercase characters with no spaces or dashes.
  • All functions and variable names follow Python naming conventions.
  • All function parameters and return values are annotated with Python type hints.
  • All functions have doctests that pass the automated testing.
  • All new algorithms include at least one URL that points to Wikipedia or another similar explanation.
  • If this pull request resolves one or more open issues then the description above includes the issue number(s) with a closing keyword: "Fixes #ISSUE-NUMBER".

@algorithms-keeper algorithms-keeper bot added enhancement This PR modified some existing files awaiting reviews This PR is ready to be reviewed labels May 13, 2025
@algorithms-keeper algorithms-keeper bot added require descriptive names This PR needs descriptive function and/or variable names require type hints https://docs.python.org/3/library/typing.html labels May 13, 2025
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[0. , 0. , 0.99]])
"""

def __init__(self, X: List[List[float]], y: List[int]) -> None:

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Please provide descriptive name for the parameter: X

Please provide descriptive name for the parameter: y

self.y = np.array(y)
self.class_weights = {0: 1.0, 1: 1.0} # Example class weights, adjust as needed

def get_Train_test_data(self) -> Tuple[List[np.ndarray], List[np.ndarray], List[np.ndarray], List[np.ndarray]]:

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Variable and function names should follow the snake_case naming convention. Please update the following name accordingly: get_Train_test_data

return in_dim, out_dim

@staticmethod
def one_hot_encode(labels, num_classes):

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Please provide return type hint for the function: one_hot_encode. If the function does not return a value, please provide the type hint as: def function() -> None:

Please provide type hint for the parameter: labels

Please provide type hint for the parameter: num_classes



"""
def __init__(self, dataloader, epoch: int, learning_rate: float, gamma=1, hidden_dim=2):

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Please provide return type hint for the function: __init__. If the function does not return a value, please provide the type hint as: def function() -> None:

Please provide type hint for the parameter: dataloader

Please provide type hint for the parameter: gamma

Please provide type hint for the parameter: hidden_dim

self.inter_variable = {}
self.weights1_list = []

def get_inout_dim(self):

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Please provide return type hint for the function: get_inout_dim. If the function does not return a value, please provide the type hint as: def function() -> None:

return learning_rate * self.gamma

@staticmethod
def accuracy(label, y_hat):

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Please provide return type hint for the function: accuracy. If the function does not return a value, please provide the type hint as: def function() -> None:

Please provide type hint for the parameter: label

Please provide type hint for the parameter: y_hat

return (y_hat.argmax(axis=1) == label.argmax(axis=1)).mean()

@staticmethod
def loss(output, label):

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Please provide return type hint for the function: loss. If the function does not return a value, please provide the type hint as: def function() -> None:

Please provide type hint for the parameter: output

Please provide type hint for the parameter: label

"""
return np.sum((output - label) ** 2) / (2 * label.shape[0])

def get_acc_loss(self):

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Please provide return type hint for the function: get_acc_loss. If the function does not return a value, please provide the type hint as: def function() -> None:

"""
return self.test_accuracy, self.test_loss

def train(self):

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Please provide return type hint for the function: train. If the function does not return a value, please provide the type hint as: def function() -> None:


output = self.forward(x=batch_imgs, W1=W1, W2=W2, no_gradient=False)

grad_W1, grad_W2 = self.back_prop(x=batch_imgs, y=batch_labels, W1=W1, W2=W2)

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Variable and function names should follow the snake_case naming convention. Please update the following name accordingly: grad_W1

Variable and function names should follow the snake_case naming convention. Please update the following name accordingly: grad_W2

@algorithms-keeper algorithms-keeper bot added the tests are failing Do not merge until tests pass label May 13, 2025
@WeiYFan WeiYFan closed this by deleting the head repository May 14, 2025
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