StochasticTools::CartesianProduct< T > Class Template Reference

#include <CartesianProduct.h>

Inheritance diagram for StochasticTools::CartesianProduct< T >:

Public Member Functions
	CartesianProduct (const std::vector< std::vector< T >> &items)
std::vector< std::vector< T > >	computeMatrix () const
	Compute the complete Cartesian product matrix. More...
std::vector< T >	computeRow (std::size_t row) const
	Compute specified row of Cartesian product matrix. More...
T	computeValue (std::size_t row, std::size_t col) const
	Compute specific value, given row and column, of the Cartesian product matrix. More...
std::size_t	numRows () const
	Total number of rows in the complete matrix. More...
std::size_t	numCols () const
	Total number of columns in the complete matrix. More...

Protected Attributes
const std::size_t	_n_rows
	Number of rows/columns. More...
const std::size_t	_n_cols

Static Private Member Functions
static std::size_t	computeRowCount (const std::vector< std::vector< T >> &items)
	Helper to compute the rows in initialization list to allow _n_rows to be const. More...

Private Attributes
const std::vector< std::vector< T > >	_items
	Data used to create Cartesian product use a copy because a temporary can be supplied, as is the case in the CartesianProductSampler. More...
std::deque< unsigned int >	_denomenators
	Containers for lazy Cartesian product calculation. More...
std::deque< unsigned int >	_moduli

Detailed Description

template<class T>
class StochasticTools::CartesianProduct< T >

Definition at line 25 of file CartesianProduct.h.

Constructor & Destructor Documentation

CartesianProduct()

template<typename T>

StochasticTools::CartesianProduct< T >::CartesianProduct

(

const std::vector< std::vector< T >> &

items

)

Definition at line 64 of file CartesianProduct.h.

  : _n_rows(computeRowCount(items)), _n_cols(items.size()), _items(items)
{
  dof_id_type d = 1;
  for (typename std::vector<std::vector<T>>::const_reverse_iterator iter = _items.rbegin();
       iter != _items.rend();
       ++iter)
  {
    std::size_t n = iter->size();
    _denomenators.push_front(d);
    _moduli.push_front(n);
    d *= n;
  }
}

Member Function Documentation

computeMatrix()

template<typename T >

std::vector< std::vector< T > > StochasticTools::CartesianProduct< T >::computeMatrix

(

)

const

Compute the complete Cartesian product matrix.

Definition at line 81 of file CartesianProduct.h.

{
  std::vector<std::vector<T>> output(_n_rows, std::vector<T>(_n_cols));
  for (std::size_t row = 0; row < _n_rows; ++row)
    for (std::size_t col = 0; col < _n_cols; ++col)
      output[row][col] = computeValue(row, col);
  return output;
}

computeRow()

template<typename T >

std::vector< T > StochasticTools::CartesianProduct< T >::computeRow

(

std::size_t

row

)

const

Compute specified row of Cartesian product matrix.

Definition at line 92 of file CartesianProduct.h.

Referenced by PolynomialQuadrature::ClenshawCurtisGrid::ClenshawCurtisGrid(), StochasticTools::MultiDimPolynomialGenerator::generateTuple(), and PolynomialQuadrature::SmolyakGrid::SmolyakGrid().

{
  std::vector<T> output(_n_cols);
  for (std::size_t col = 0; col < _n_cols; ++col)
    output[col] = computeValue(row, col);
  return output;
}

computeRowCount()

template<typename T>

std::size_t StochasticTools::CartesianProduct< T >::computeRowCount ( const std::vector< std::vector< T >> &  items )

staticprivate

Helper to compute the rows in initialization list to allow _n_rows to be const.

Definition at line 111 of file CartesianProduct.h.

{
  std::size_t n_rows = 1;
  for (const auto & inner : items)
    n_rows *= inner.size();
  return n_rows;
}

computeValue()

template<typename T >

T StochasticTools::CartesianProduct< T >::computeValue	(	std::size_t	row,
		std::size_t	col
	)		const

Compute specific value, given row and column, of the Cartesian product matrix.

Definition at line 102 of file CartesianProduct.h.

{
  mooseAssert(row < _n_rows, "Row index out of range.");
  mooseAssert(col < _n_cols, "Column index out of range.");
  return _items[col][(row / _denomenators[col]) % _moduli[col]];
}

numCols()

template<class T>

std::size_t StochasticTools::CartesianProduct< T >::numCols ( ) const

inline

Total number of columns in the complete matrix.

Definition at line 43 of file CartesianProduct.h.

Referenced by TEST().

{ return _n_cols; }

numRows()

template<class T>

std::size_t StochasticTools::CartesianProduct< T >::numRows ( ) const

inline

Total number of rows in the complete matrix.

Definition at line 40 of file CartesianProduct.h.

Referenced by PolynomialQuadrature::ClenshawCurtisGrid::ClenshawCurtisGrid(), StochasticTools::MultiDimPolynomialGenerator::generateTuple(), PolynomialQuadrature::SmolyakGrid::SmolyakGrid(), and TEST().

{ return _n_rows; }

Member Data Documentation

_denomenators

template<class T>

std::deque<unsigned int> StochasticTools::CartesianProduct< T >::_denomenators

private

Containers for lazy Cartesian product calculation.

Definition at line 56 of file CartesianProduct.h.

_items

template<class T>

const std::vector<std::vector<T> > StochasticTools::CartesianProduct< T >::_items

private

Data used to create Cartesian product use a copy because a temporary can be supplied, as is the case in the CartesianProductSampler.

Definition at line 53 of file CartesianProduct.h.

_moduli

template<class T>

std::deque<unsigned int> StochasticTools::CartesianProduct< T >::_moduli

private

Definition at line 57 of file CartesianProduct.h.

_n_cols

template<class T>

const std::size_t StochasticTools::CartesianProduct< T >::_n_cols

protected

Definition at line 48 of file CartesianProduct.h.

_n_rows

template<class T>

const std::size_t StochasticTools::CartesianProduct< T >::_n_rows

protected

Number of rows/columns.

Definition at line 47 of file CartesianProduct.h.

---

The documentation for this class was generated from the following file:

• stochastic_tools/include/utils/CartesianProduct.h