Package dragon.matrix

A package for matrix (both dense matrix and sparse matrix) storage, read, write and operations.

See:
Description

Interface Summary

Cell	Interface of cell which is the unit of a matrix
DenseMatrix	Interface of dense matrix
DoubleDenseMatrix	Interface of Double Dense Matrix
DoubleSparseMatrix	Interface of Double-typed Sparse Matrix
IntDenseMatrix	Interface of Integer-typed Dense Matrix
IntSparseMatrix	Interface of Integer-typed Sparse Matrix
Matrix	Interface of matrix including dense matrix and sparse matrix
Row	Interface of row for sparse matrix
SparseMatrix	Interface of sparse matrix

Class Summary

AbstractCell	Implements basic functions of interface--Cell such as resetting and comparing cell objects
AbstractDenseMatrix	Implements basic functions of interface--DenseMatrix and extends class AbstractMatrix
AbstractFlatSparseMatrix	Abstract flat sparse matrix handles sparse matrix smaller than super sparse matrix while adding options for read and store matrix data to disk either in text or binary format
AbstractGiantSparseMatrix	The abstract sparse matrix for handling extreme large sparse matrirwhich will write matrix data to disk whenever it's over fulsh interval by default 1000,000 and superior to AbstractSuperSparseMatrix, however it's lack of some basic matrix operation functions such as getNonZeroColumnInRow privided by AbstractSuperSparseMatrix because it focuses on storing and loading matrix to disk efficiently
AbstractMatrix	Abstract Matrix implements basic functions such as getting base row, getting base column and so on.
AbstractRow	Abstract row class implementing functions of as row related operations
AbstractSparseMatrix	Abstract Sparse matrix implements the interface of sparse matrix which can be called by any data type's sparse matrix such as double and integer
AbstractSuperSparseMatrix	Abstract super sparse matrix is designed for large sparse matrix which first caches data and then processes data and write data to disk when it's over flush interval
CoordinateComparator	The comparator for a coordinate of a sparse matrix which compares the two cell objects regarding to a coordinate
DoubleCell	The cell object for handling double data
DoubleFlatDenseMatrix	Double flat dense matrix which provides options of storing data to disk in binary manner or text manner
DoubleFlatSparseMatrix	Double flat sparse matrix handles data smaller than super sparse matrix, however it provides options of storing data to disk either in binary or text format
DoubleGiantSparseMatrix	Giant sparse matrix handles extreme large double sparse matrix
DoubleRow	Row of matrix for data type of double
DoubleSuperSparseMatrix	Super sparse matrix for double data type
IntCell	Cell for integer data
IntFlatDenseMatrix	Flat dense matrix for integer data
IntFlatSparseMatrix	Flat sparse matrix for integer data
IntGiantSparseMatrix	Giant sparse matrix for extreme large integer matrix
IntRow	Row of matrix for integer data
IntSuperSparseMatrix	Super sparse matrix for integer data
SparseMatrixFactory	Sparse matrix factory is for storing, reading and expanding matrix operations

Package dragon.matrix Description

A package for matrix (both dense matrix and sparse matrix) storage, read, write and operations.

Package Specification

The dragon toolkit uses its own technique for sparse matrix. All sparse matrix classes should implement an interface called SparseMatrix. The toolkit has included three implmentations, flat sparse matrix, super sparse matrix, and giant sparse matrix for matrix in different size. The flat sparse matrix load all data into memory and thus very fast, but fit for small dataset only. The super sparse matrix will load index into the memory and cache a given number of rows. The giant sparse matrix load nothing into the memory except caching the most recent row.