Module ojalgo

Package org.ojalgo.optimisation.linear

Interface BasisRepresentation

All Superinterfaces:

InvertibleFactor<Double>, Structure1D, Structure2D

All Known Implementing Classes:

DecomposedInverse, ProductFormInverse

interface BasisRepresentation
extends InvertibleFactor<Double>

Nested Class Summary

Nested classes/interfaces inherited from interface org.ojalgo.matrix.transformation.InvertibleFactor

InvertibleFactor.IdentityFactor<N extends Comparable<N>>

Nested classes/interfaces inherited from interface org.ojalgo.structure.Structure1D

Structure1D.BasicMapper<T>, Structure1D.IndexMapper<T>, Structure1D.IntIndex, Structure1D.LongIndex, Structure1D.LoopCallback

Nested classes/interfaces inherited from interface org.ojalgo.structure.Structure2D

Structure2D.IntRowColumn, Structure2D.Logical<S extends Structure2D,B extends Structure2D.Logical<S,B>>, Structure2D.LongRowColumn, Structure2D.ReducibleTo1D<R extends Structure1D>, Structure2D.Reshapable, Structure2D.RowColumnKey<R,C>, Structure2D.RowColumnMapper<R,C>

Method Summary

Modifier and Type	Method	Description
void	reset(MatrixStore<Double> basis)	Until this has been called there is an implicit assumption that the basis is the identity matrix.
void	update(MatrixStore<Double> basis, int col, SparseArray<Double> values)	Update the inverse to reflect a replaced column in the basis.

Methods inherited from interface org.ojalgo.matrix.transformation.InvertibleFactor

btran, btran, ftran, ftran

Methods inherited from interface org.ojalgo.structure.Structure2D

count, countColumns, countRows, firstInColumn, firstInRow, getColDim, getMaxDim, getMinDim, getRowDim, isEmpty, isFat, isScalar, isSquare, isTall, isVector, limitOfColumn, limitOfRow, size

Method Details

reset

void reset(MatrixStore<Double> basis)

Until this has been called there is an implicit assumption that the basis is the identity matrix. update(MatrixStore, int, SparseArray) before this method has been called.

update

void update(MatrixStore<Double> basis,
 int col,
 SparseArray<Double> values)

Update the inverse to reflect a replaced column in the basis.

Parameters:

basis - Full basis, with the column already exchanged.

col - The index, of the column, that was exchanged.

values - The (non zero) values of that column.