libanpcpp/api/limit__matrix_8hpp_source.html

#pragma once


#include <cstddef>


#include "anpcpp/matrix.hpp"


namespace anpcpp {


struct LimitMatrixOptions {

  double error = 1e-10;

  std::size_t max_iters = 5000;

  bool use_hierarchy_formula = true;

  std::size_t start_pow = 0;

};


[[nodiscard]] Matrix column_normalize(const Matrix& mat);


void column_normalize_inplace(Matrix& mat);


[[nodiscard]] Matrix hierarchy_formula(const Matrix& mat);


[[nodiscard]] Matrix calculus_limit(const Matrix& mat,

                                    const LimitMatrixOptions& options = {});


[[nodiscard]] Vector priority_from_limit(const Matrix& limit_matrix);


}  // namespace anpcpp

anpcpp::Matrix
Dense row-major matrix stored in a flat buffer.
Definition matrix.hpp:136

anpcpp::Vector
One-dimensional array of doubles with element-wise arithmetic.
Definition matrix.hpp:34

matrix.hpp
Dense row-major vectors and matrices.

anpcpp
Analytic Network Process computational library.
Definition eigen.hpp:14

anpcpp::calculus_limit
Matrix calculus_limit(const Matrix &mat, const LimitMatrixOptions &options={})
SuperDecisions / pyanp calculus limit matrix.

anpcpp::hierarchy_formula
Matrix hierarchy_formula(const Matrix &mat)
Hierarchy limit formula: normalize(sum of W^k for k=1..n-1).

anpcpp::column_normalize_inplace
void column_normalize_inplace(Matrix &mat)
In-place column_normalize.

anpcpp::priority_from_limit
Vector priority_from_limit(const Matrix &limit_matrix)
Row sums of the limit matrix, L1-normalized (pyanp priority_from_limit).

anpcpp::column_normalize
Matrix column_normalize(const Matrix &mat)
Column-normalizes each column by its sum (pyanp normalize).

anpcpp::LimitMatrixOptions
Options for limit-matrix calculation.
Definition limit_matrix.hpp:17

anpcpp::LimitMatrixOptions::start_pow
std::size_t start_pow
Starting power; 0 means auto-detect (pyanp default).
Definition limit_matrix.hpp:25

anpcpp::LimitMatrixOptions::error
double error
Convergence tolerance for calculus iteration.
Definition limit_matrix.hpp:19

anpcpp::LimitMatrixOptions::use_hierarchy_formula
bool use_hierarchy_formula
Use hierarchy shortcut when the matrix is a strict hierarchy.
Definition limit_matrix.hpp:23

anpcpp::LimitMatrixOptions::max_iters
std::size_t max_iters
Maximum calculus iterations.
Definition limit_matrix.hpp:21