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distance-metric-learning

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YiShape-Math is a high-performance Java math library that provides NumPy-like functionalities including vector & matrix operations, data visualization, statistics, optimization, time series, signal processing, multi-criteria programming, distance metric learning, and machine learning models.

  • Updated Jun 22, 2026
  • Java

Technical working paper on optimizing the weighted nearest neighbors (wNN) regression algorithm by learning feature-specific distance metric weights via batch gradient descent, achieving up to 80.65% MSE reduction over conventional wNN on UCI benchmarks.

  • Updated Aug 2, 2026

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