public class SparseMatrix extends java.lang.Object implements java.lang.Iterable<MatrixEntry>
Constructor and Description |
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SparseMatrix(int rows,
int cols,
com.google.common.collect.Table<java.lang.Integer,java.lang.Integer,java.lang.Double> dataTable)
Construct a sparse matrix with only CRS structures
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SparseMatrix(int rows,
int cols,
com.google.common.collect.Table<java.lang.Integer,java.lang.Integer,java.lang.Double> dataTable,
com.google.common.collect.Multimap<java.lang.Integer,java.lang.Integer> colMap)
Construct a sparse matrix with both CRS and CCS structures
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SparseMatrix(SparseMatrix mat) |
SparseMatrix(SparseMatrix mat,
boolean deap)
Construct a sparse matrix from another sparse matrix
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Modifier and Type | Method and Description |
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void |
add(int row,
int column,
double val)
Add a value to entry [row, column]
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SparseMatrix |
clone()
Make a deep clone of current matrix
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SparseVector |
column(int col)
get a col sparse vector of a matrix
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int |
columnSize(int col)
query the size of a specific col
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double |
get(int row,
int column)
Retrieve value at entry [row, column]
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int[] |
getColumnIndices() |
double[] |
getData() |
int[] |
getRowPointers() |
java.util.Iterator<MatrixEntry> |
iterator() |
double |
mean() |
int |
numColumns() |
int |
numRows() |
SparseVector |
row(int row)
get a row sparse vector of a matrix
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SparseVector |
row(int row,
int except)
get a row sparse vector of a matrix
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int |
rowSize(int row)
query the size of a specific row
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void |
set(int row,
int column,
double val)
Set a value to entry [row, column]
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int |
size() |
double |
sum() |
java.lang.String |
toString() |
SparseMatrix |
transpose() |
public SparseMatrix(int rows, int cols, com.google.common.collect.Table<java.lang.Integer,java.lang.Integer,java.lang.Double> dataTable, com.google.common.collect.Multimap<java.lang.Integer,java.lang.Integer> colMap)
public SparseMatrix(int rows, int cols, com.google.common.collect.Table<java.lang.Integer,java.lang.Integer,java.lang.Double> dataTable)
public SparseMatrix(SparseMatrix mat)
public SparseMatrix(SparseMatrix mat, boolean deap)
mat
- the original sparse matrixdeap
- whether to copy the CCS structurespublic SparseMatrix clone()
clone
in class java.lang.Object
public SparseMatrix transpose()
public int[] getRowPointers()
public int[] getColumnIndices()
public int size()
public int numRows()
public int numColumns()
public double[] getData()
public void set(int row, int column, double val)
row
- row idcolumn
- column idval
- value to setpublic void add(int row, int column, double val)
row
- row idcolumn
- column idval
- value to addpublic double get(int row, int column)
row
- row idcolumn
- column idpublic SparseVector row(int row)
row
- row idpublic SparseVector row(int row, int except)
row
- row idexcept
- row id to be excludedpublic int rowSize(int row)
row
- row idpublic SparseVector column(int col)
col
- col idpublic int columnSize(int col)
col
- col idpublic double sum()
public double mean()
public java.lang.String toString()
toString
in class java.lang.Object
public java.util.Iterator<MatrixEntry> iterator()
iterator
in interface java.lang.Iterable<MatrixEntry>