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NUMPY AND THE MACHINE LEARNING ECOSYSTEM

NumPy and the Machine Learning Ecosystem home

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NumPy and the Machine Learning Ecosystem

NumPy is an integral part of the machine learning ecosystem, providing the foundation for numerical operations that are essential for data manipulation and model development. It is used in combination with other key libraries like Pandas, Scikit-learn, TensorFlow, and PyTorch.

NumPy with Pandas

Pandas is built on top of NumPy and provides powerful data structures like DataFrame and Series for handling structured data. It enables smooth handling of data for machine learning tasks.

  • Creating DataFrames from NumPy Arrays:
    import pandas as pd
    import numpy as np
    data = np.array([[1, 2], [3, 4], [5, 6]])
    df = pd.DataFrame(data, columns=['A', 'B'])
    print(df)
  • Converting Pandas DataFrames to NumPy Arrays:
    np_array = df.to_numpy()

NumPy with Scikit-learn

Scikit-learn, a popular machine learning library, relies on NumPy for numerical operations in model training and evaluation. NumPy arrays are used for feature scaling and other tasks.

  • Feature Scaling using NumPy:
    from sklearn.preprocessing import StandardScaler
    X = np.array([[1, 2], [3, 4], [5, 6]])
    scaler = StandardScaler()
    X_scaled = scaler.fit_transform(X)
  • Using NumPy Arrays in Model Training:
    from sklearn.linear_model import LinearRegression
    model = LinearRegression()
    model.fit(X, np.array([1, 2, 3]))

NumPy with TensorFlow and PyTorch

TensorFlow and PyTorch, the leading deep learning frameworks, provide seamless integration with NumPy arrays, enabling easy conversion between the two for training models.

  • Converting NumPy Arrays to Tensors in TensorFlow:
    import tensorflow as tf
    np_array = np.array([1, 2, 3, 4])
    tensor = tf.convert_to_tensor(np_array)
  • Converting NumPy Arrays to Tensors in PyTorch:
    import torch
    torch_tensor = torch.tensor(np_array)

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