cjlin1/libsvm

Features

• Machine Learning Kernel Libraries - Functions as a comprehensive machine learning kernel library for calculating similarity in specialized datasets.
• SVM Model Training - Builds classification and regression models using training data and kernel functions to find optimal separating hyperplanes.
• Multiclass - Categorizes data points into multiple classes using classification formulations with multi-class support.
• Custom Kernel Definitions - Allows the definition of unique kernel functions to calculate similarity between data points in specialized datasets.
• Kernel-Based Feature Mapping - Transforms input data into high-dimensional spaces using kernel functions to resolve non-linear patterns.
• Machine Learning Classification - Categorizes data points into predefined classes using support vector machine classification.
• Regression Predictions - Predicts continuous numerical values by approximating target functions through regression techniques.
• Model Training - Builds classification and regression models to find optimal boundaries between different data patterns.
• Numerical Regressions - Predicts continuous numerical values by approximating target functions using regression techniques.
• Support Vector Machines - Implements a support vector machine classifier using a soft-margin approach to improve decision boundary generalization.
• Single-Label Prediction - Assigns the single most likely class label to new data instances using a trained model.
• Classification Engines - Implements an engine for training models to categorize data points based on optimal separating hyperplanes.
• Class Probability Estimation - Transforms raw decision values into probability estimates by fitting a sigmoid function via Platt scaling.
• Coordinate Descent Optimizers - Implements dual-coordinate descent optimization to minimize the quadratic objective function for faster linear SVM training.
• Stratified Splitting Tools - Divides datasets into training and testing sets while preserving original class proportions to prevent sampling bias.
• Density Estimation - Implements methods for modeling the underlying probability distribution of datasets using support vector machines.
• One-Class SVM Outlier Detection - Identifies boundaries of a single class of data to detect outliers and estimate data distributions.
• Imbalanced Dataset Loss Functions - Adjusts the penalty for misclassifications based on class weights to handle imbalanced datasets.
• Hyperparameter Tuning - Optimizes model configurations through cross-validation and accuracy contours to improve predictive performance.
• Hyperparameter Optimization - Determines the optimal hyperparameters for a classification model to improve predictive performance.
• Hyperparameter Grid Sweeps - Provides workflows for systematic hyperparameter selection via cross-validation and accuracy contours.
• Stratified Folders - Splits data into folds while preserving class percentages to ensure representative model evaluation.
• Distribution Boundary Estimators - Identifies the boundary of a single class of data to detect outliers and estimate data distributions.
• Statistical Model Validators - Provides a framework for evaluating predictive performance using cross-validation, stratified sampling, and accuracy contours.
• Weighted Loss Functions - Applies weights to different classes during training to prevent bias toward the majority class in imbalanced datasets.
• Sequential Minimal Optimizers - Employs Sequential Minimal Optimization to efficiently solve the quadratic programming problem during model training.
• Accuracy Contour Optimization - Identifies the best model settings by using cross validation and generating accuracy contours.
• Machine Learning - Efficient library for support vector machines.
• Machine Learning Libraries - Efficient software for support vector machine classification and regression tasks.
• Model Conversion Tools - Library for support vector machines used in classification tasks.

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