| Package | Description | 
|---|---|
| org.apache.commons.math3.distribution | Implementations of common discrete and continuous distributions. | 
| org.apache.commons.math3.distribution.fitting | Fitting of parameters against distributions. | 
| org.apache.commons.math3.filter | Implementations of common discrete-time linear filters. | 
| org.apache.commons.math3.fitting.leastsquares | This package provides algorithms that minimize the residuals
 between observations and model values. | 
| org.apache.commons.math3.linear | Linear algebra support. | 
| org.apache.commons.math3.ml.clustering | Clustering algorithms. | 
| org.apache.commons.math3.ode | 
 This package provides classes to solve Ordinary Differential Equations problems. | 
| org.apache.commons.math3.ode.nonstiff | 
 This package provides classes to solve non-stiff Ordinary Differential Equations problems. | 
| org.apache.commons.math3.ode.sampling | 
 This package provides classes to handle sampling steps during
 Ordinary Differential Equations integration. | 
| org.apache.commons.math3.optim.linear | Optimization algorithms for linear constrained problems. | 
| org.apache.commons.math3.optim.nonlinear.scalar | Algorithms for optimizing a scalar function. | 
| org.apache.commons.math3.optim.nonlinear.scalar.noderiv | This package provides optimization algorithms that do not require derivatives. | 
| org.apache.commons.math3.optim.nonlinear.vector | Algorithms for optimizing a vector function. | 
| org.apache.commons.math3.optim.nonlinear.vector.jacobian | This package provides optimization algorithms that require derivatives. | 
| org.apache.commons.math3.optimization.direct | 
 This package provides optimization algorithms that don't require derivatives. | 
| org.apache.commons.math3.random | Random number and random data generators. | 
| org.apache.commons.math3.stat.correlation | Correlations/Covariance computations. | 
| org.apache.commons.math3.stat.descriptive | Generic univariate summary statistic objects. | 
| org.apache.commons.math3.stat.descriptive.moment | Summary statistics based on moments. | 
| org.apache.commons.math3.stat.regression | Statistical routines involving multivariate data. | 
| Class and Description | 
|---|
| NonPositiveDefiniteMatrixException Exception to be thrown when a positive definite matrix is expected. | 
| RealMatrix Interface defining a real-valued matrix with basic algebraic operations. | 
| SingularMatrixException Exception to be thrown when a non-singular matrix is expected. | 
| Class and Description | 
|---|
| SingularMatrixException Exception to be thrown when a non-singular matrix is expected. | 
| Class and Description | 
|---|
| MatrixDimensionMismatchException Exception to be thrown when either the number of rows or the number of
 columns of a matrix do not match the expected values. | 
| NonSquareMatrixException Exception to be thrown when a square matrix is expected. | 
| RealMatrix Interface defining a real-valued matrix with basic algebraic operations. | 
| RealVector Class defining a real-valued vector with basic algebraic operations. | 
| SingularMatrixException Exception to be thrown when a non-singular matrix is expected. | 
| Class and Description | 
|---|
| RealMatrix Interface defining a real-valued matrix with basic algebraic operations. | 
| RealVector Class defining a real-valued vector with basic algebraic operations. | 
| Class and Description | 
|---|
| AbstractFieldMatrix Basic implementation of  FieldMatrixmethods regardless of the underlying storage. | 
| AbstractRealMatrix Basic implementation of RealMatrix methods regardless of the underlying storage. | 
| AnyMatrix Interface defining very basic matrix operations. | 
| Array2DRowFieldMatrix Implementation of FieldMatrix FieldElement[][] array to store entries. | 
| Array2DRowRealMatrix Implementation of  RealMatrixusing adouble[][]array to
 store entries. | 
| ArrayFieldVector This class implements the  FieldVectorinterface with aFieldElementarray. | 
| ArrayRealVector This class implements the  RealVectorinterface with a double array. | 
| BlockFieldMatrix Cache-friendly implementation of FieldMatrix using a flat arrays to store
 square blocks of the matrix. | 
| BlockRealMatrix Cache-friendly implementation of RealMatrix using a flat arrays to store
 square blocks of the matrix. | 
| DecompositionSolver Interface handling decomposition algorithms that can solve A × X = B. | 
| DiagonalMatrix Implementation of a diagonal matrix. | 
| FieldDecompositionSolver Interface handling decomposition algorithms that can solve A × X = B. | 
| FieldMatrix Interface defining field-valued matrix with basic algebraic operations. | 
| FieldMatrixChangingVisitor Interface defining a visitor for matrix entries. | 
| FieldMatrixPreservingVisitor Interface defining a visitor for matrix entries. | 
| FieldVector Interface defining a field-valued vector with basic algebraic operations. | 
| FieldVectorChangingVisitor This interface defines a visitor for the entries of a vector. | 
| FieldVectorPreservingVisitor This interface defines a visitor for the entries of a vector. | 
| IllConditionedOperatorException An exception to be thrown when the condition number of a
  RealLinearOperatoris too high. | 
| IterativeLinearSolver This abstract class defines an iterative solver for the linear system A
 · x = b. | 
| IterativeLinearSolverEvent This is the base class for all events occurring during the iterations of a
  IterativeLinearSolver. | 
| JacobiPreconditioner This class implements the standard Jacobi (diagonal) preconditioner. | 
| MatrixDimensionMismatchException Exception to be thrown when either the number of rows or the number of
 columns of a matrix do not match the expected values. | 
| NonPositiveDefiniteMatrixException Exception to be thrown when a positive definite matrix is expected. | 
| NonPositiveDefiniteOperatorException Exception to be thrown when a symmetric, definite positive
  RealLinearOperatoris expected. | 
| NonSelfAdjointOperatorException Exception to be thrown when a self-adjoint  RealLinearOperatoris expected. | 
| NonSquareMatrixException Exception to be thrown when a square matrix is expected. | 
| NonSquareOperatorException Exception to be thrown when a square linear operator is expected. | 
| OpenMapRealMatrix Sparse matrix implementation based on an open addressed map. | 
| OpenMapRealVector This class implements the  RealVectorinterface with aOpenIntToDoubleHashMapbacking store. | 
| PreconditionedIterativeLinearSolver 
 This abstract class defines preconditioned iterative solvers. | 
| QRDecomposition Calculates the QR-decomposition of a matrix. | 
| RealLinearOperator This class defines a linear operator operating on real ( double)
 vector spaces. | 
| RealMatrix Interface defining a real-valued matrix with basic algebraic operations. | 
| RealMatrixChangingVisitor Interface defining a visitor for matrix entries. | 
| RealMatrixFormat Formats a  nxmmatrix in components list format
 "{{a00,a01, ...,
 a0m-1},{a10,
 a11, ..., a1m-1},{...},{
 an-10, an-11, ...,
 an-1m-1}}". | 
| RealMatrixPreservingVisitor Interface defining a visitor for matrix entries. | 
| RealVector Class defining a real-valued vector with basic algebraic operations. | 
| RealVector.Entry An entry in the vector. | 
| RealVectorChangingVisitor This interface defines a visitor for the entries of a vector. | 
| RealVectorFormat Formats a vector in components list format "{v0; v1; ...; vk-1}". | 
| RealVectorPreservingVisitor This interface defines a visitor for the entries of a vector. | 
| SingularMatrixException Exception to be thrown when a non-singular matrix is expected. | 
| SparseFieldMatrix Sparse matrix implementation based on an open addressed map. | 
| SparseFieldVector This class implements the  FieldVectorinterface with aOpenIntToFieldHashMapbacking store. | 
| SparseRealMatrix Marker interface for  RealMatriximplementations that require sparse backing storage | 
| SparseRealVector Marker class for RealVectors that require sparse backing storage | 
| Class and Description | 
|---|
| RealMatrix Interface defining a real-valued matrix with basic algebraic operations. | 
| Class and Description | 
|---|
| Array2DRowFieldMatrix Implementation of FieldMatrix FieldElement[][] array to store entries. | 
| Array2DRowRealMatrix Implementation of  RealMatrixusing adouble[][]array to
 store entries. | 
| Class and Description | 
|---|
| Array2DRowFieldMatrix Implementation of FieldMatrix FieldElement[][] array to store entries. | 
| Array2DRowRealMatrix Implementation of  RealMatrixusing adouble[][]array to
 store entries. | 
| Class and Description | 
|---|
| Array2DRowRealMatrix Implementation of  RealMatrixusing adouble[][]array to
 store entries. | 
| Class and Description | 
|---|
| RealVector Class defining a real-valued vector with basic algebraic operations. | 
| Class and Description | 
|---|
| RealMatrix Interface defining a real-valued matrix with basic algebraic operations. | 
| Class and Description | 
|---|
| RealMatrix Interface defining a real-valued matrix with basic algebraic operations. | 
| Class and Description | 
|---|
| RealMatrix Interface defining a real-valued matrix with basic algebraic operations. | 
| Class and Description | 
|---|
| RealMatrix Interface defining a real-valued matrix with basic algebraic operations. | 
| Class and Description | 
|---|
| RealMatrix Interface defining a real-valued matrix with basic algebraic operations. | 
| Class and Description | 
|---|
| RealMatrix Interface defining a real-valued matrix with basic algebraic operations. | 
| Class and Description | 
|---|
| RealMatrix Interface defining a real-valued matrix with basic algebraic operations. | 
| Class and Description | 
|---|
| RealMatrix Interface defining a real-valued matrix with basic algebraic operations. | 
| Class and Description | 
|---|
| RealMatrix Interface defining a real-valued matrix with basic algebraic operations. | 
| Class and Description | 
|---|
| RealMatrix Interface defining a real-valued matrix with basic algebraic operations. | 
| RealVector Class defining a real-valued vector with basic algebraic operations. | 
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