#include <itpp/base/svec.h>
Public Member Functions | |
Sparse_Vec () | |
Default constructor. | |
Sparse_Vec (int sz, int data_init=200) | |
Initiate an empty sparse vector. | |
Sparse_Vec (const Sparse_Vec< T > &v) | |
Initiate a new sparse vector. | |
Sparse_Vec (const Vec< T > &v) | |
Initiate a new sparse vector from a dense vector. | |
Sparse_Vec (const Vec< T > &v, T epsilon) | |
Initiate a new sparse vector from a dense vector. Elements of v larger than epsilon are copied into the new sparse vector. | |
~Sparse_Vec () | |
Destructor. | |
void | set_size (int sz, int data_init=-1) |
Set the size sz of the sparse vector. Default value data_init=-1 => allocated size for the data is not changed. | |
int | size () const |
Returns the size of the sparse vector. | |
int | nnz () |
Number of non-zero elements in the sparse vector. | |
double | density () |
Returns the density of the sparse vector: (number of non-zero elements)/(size of the vector). | |
void | set_small_element (const T &epsilon) |
Set that all elements smaller than epsilon should be set to zero. | |
void | remove_small_elements () |
void | resize_data (int new_size) |
Set the maximum number of non-zero elements to new_size . | |
void | compact () |
Set the maximum number of non-zero elements equal to the actual number of non-zero elements. | |
void | full (Vec< T > &v) const |
Returns a full, dense vector in v . | |
Vec< T > | full () const |
Returns a full, dense vector. | |
T | operator() (int i) const |
Returns the element with index i . | |
void | set (int i, T v) |
Set element i equal to v . | |
void | set (const ivec &index_vec, const Vec< T > &v) |
Set the elements of the sparse vector with indices index_vec to the values in v . | |
void | set_new (int i, T v) |
Set a new element with index i equal to v . | |
void | set_new (const ivec &index_vec, const Vec< T > &v) |
Set new elements with indices index_vec equal to the values in v (no check whether the same index is used several times). | |
void | add_elem (const int i, const T v) |
Add element i with v . | |
void | add (const ivec &index_vec, const Vec< T > &v) |
Add v to the elements specified by index_vec with v . | |
void | zeros () |
Set the sparse vector to the all zero vector (removes all non-zero elements). | |
void | zero_elem (const int i) |
Set the i-th element to zero (i.e. clear that element if it contains a non-zero value). | |
void | clear () |
Clear all non-zero elements of the sparse vector. | |
void | clear_elem (const int i) |
Clear the i-th element (if it contains a non-zero value). | |
void | get_nz_data (int p, T &data_out) |
Extract the reference to the p-th non-zero data element. | |
T | get_nz_data (int p) |
Returns the p-th non-zero data element. | |
int | get_nz_index (int p) |
Returns the vector index of the p-th non-zero element. | |
void | get_nz (int p, int &idx, T &dat) |
Returns the p-th non-zero value in dat and the corresponding vector index in idx . | |
Sparse_Vec< T > | get_subvector (int i1, int i2) const |
Return sparse subvector from index i1 to index i2 . | |
T | sqr () const |
Returns the sum of all values squared. | |
void | operator= (const Sparse_Vec< T > &v) |
Assign sparse vector the value and length of the sparse vector v . | |
void | operator= (const Vec< T > &v) |
Assign sparse vector the value and length of the dense vector v . | |
Sparse_Vec< T > | operator- () const |
Returns the sign inverse of all elements in the sparse vector. | |
bool | operator== (const Sparse_Vec< T > &v) |
Compare two sparse vectors. False if wrong sizes or different values. | |
void | operator+= (const Sparse_Vec< T > &v) |
Add sparse vector v to all non-zero elements of the sparse vector. | |
void | operator+= (const Vec< T > &v) |
Add vector v to all non-zero elements of the sparse vector. | |
void | operator-= (const Sparse_Vec< T > &v) |
Subtract sparse vector v from all non-zero elements of the sparse vector. | |
void | operator-= (const Vec< T > &v) |
Subtract vector v from all non-zero elements of the sparse vector. | |
void | operator *= (const T &v) |
Multiply the scalar v to all non-zero elements of the sparse vector. | |
void | operator/= (const T &v) |
Divide all non-zero elements of the sparse vector with the scalar v . | |
Friends | |
Sparse_Vec< T > | operator+ (const Sparse_Vec< T > &v1, const Sparse_Vec< T > &v2) |
Addition v1+v2 where v1 and v2 are sparse vector. | |
T | operator * (const Sparse_Vec< T > &v1, const Sparse_Vec< T > &v2) |
Scalar product v1*v2 where v1 and v2 are sparse vectors. | |
T | operator * (const Sparse_Vec< T > &v1, const Vec< T > &v2) |
Scalar product v1*v2 where v1 is a sparse vector and v2 is a dense vector. | |
T | operator * (const Vec< T > &v1, const Sparse_Vec< T > &v2) |
Scalar product v1*v2 where v1 is a dense vector and v2 is a sparse vector. | |
Sparse_Vec< T > | elem_mult (const Sparse_Vec< T > &v1, const Sparse_Vec< T > &v2) |
Element wise multiplication of two sparse vectors. | |
Vec< T > | elem_mult (const Sparse_Vec< T > &v1, const Vec< T > &v2) |
Element wise multiplication of a sparse vector and a dense vector. | |
Sparse_Vec< T > | elem_mult_s (const Sparse_Vec< T > &v1, const Vec< T > &v2) |
Element wise multiplication of a sparse vector and a dense vector returning a sparse vector. | |
Vec< T > | elem_mult (const Vec< T > &v1, const Sparse_Vec< T > &v2) |
Element wise multiplication of a a dense vector and a sparse vector. | |
Sparse_Vec< T > | elem_mult_s (const Vec< T > &v1, const Sparse_Vec< T > &v2) |
Element wise multiplication of a a dense vector and a sparse vector returning a sparse vector. |
Definition at line 94 of file svec.h.
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Default constructor.
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Initiate an empty sparse vector.
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Initiate a new sparse vector.
Definition at line 391 of file svec.h. References itpp::Sparse_Vec< T >::check_small_elems_flag, itpp::Sparse_Vec< T >::data, itpp::Sparse_Vec< T >::data_size, itpp::Sparse_Vec< T >::eps, itpp::Sparse_Vec< T >::index, itpp::Sparse_Vec< T >::used_size, and itpp::Sparse_Vec< T >::v_size. |
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Initiate a new sparse vector from a dense vector.
Definition at line 408 of file svec.h. References min, itpp::Sparse_Vec< T >::resize_data(), and itpp::Vec< Num_T >::size(). |
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Initiate a new sparse vector from a dense vector. Elements of
Definition at line 429 of file svec.h. References itpp::abs(), min, itpp::Sparse_Vec< T >::resize_data(), and itpp::Vec< Num_T >::size(). |
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Destructor.
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Set the size
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Returns the size of the sparse vector.
Definition at line 141 of file svec.h. Referenced by itpp::operator *(), itpp::Sparse_Vec< T >::operator+=(), and itpp::Sparse_Vec< T >::operator-=(). |
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Number of non-zero elements in the sparse vector.
Definition at line 144 of file svec.h. References itpp::Sparse_Vec< T >::remove_small_elements(). Referenced by itpp::operator *(). |
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Returns the density of the sparse vector: (number of non-zero elements)/(size of the vector).
Definition at line 470 of file svec.h. References itpp::Sparse_Vec< T >::remove_small_elements(). |
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Set that all elements smaller than epsilon should be set to zero.
Definition at line 480 of file svec.h. References itpp::Sparse_Vec< T >::remove_small_elements(). |
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Removes all elements that are smaller than epsilon from the non-zero elements.
Definition at line 487 of file svec.h. References itpp::abs(). Referenced by itpp::Sparse_Vec< T >::compact(), itpp::Sparse_Vec< T >::density(), itpp::Sparse_Vec< T >::get_nz(), itpp::Sparse_Vec< T >::get_nz_data(), itpp::Sparse_Vec< T >::get_nz_index(), itpp::Sparse_Vec< T >::nnz(), itpp::Sparse_Vec< T >::operator==(), and itpp::Sparse_Vec< T >::set_small_element(). |
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Set the maximum number of non-zero elements to
Definition at line 514 of file svec.h. References it_assert. Referenced by itpp::Sparse_Vec< T >::compact(), itpp::elem_mult(), itpp::Sparse_Vec< T >::get_subvector(), itpp::operator+(), itpp::Sparse_Vec< T >::operator=(), itpp::Sparse_Vec< T >::set_new(), and itpp::Sparse_Vec< T >::Sparse_Vec(). |
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Set the maximum number of non-zero elements equal to the actual number of non-zero elements.
Definition at line 537 of file svec.h. References itpp::Sparse_Vec< T >::remove_small_elements(), and itpp::Sparse_Vec< T >::resize_data(). |
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Returns a full, dense vector in
Definition at line 546 of file svec.h. References itpp::Vec< Num_T >::set_size(). Referenced by itpp::full(), and itpp::operator *(). |
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Returns a full, dense vector.
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Returns the element with index
Definition at line 565 of file svec.h. References it_assert0. |
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Set element
Definition at line 581 of file svec.h. References it_assert0. |
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Set the elements of the sparse vector with indices
Definition at line 749 of file svec.h. References itpp::Sparse_Vec< T >::add(), itpp::Sparse_Vec< T >::clear(), it_assert0, and itpp::max(). |
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Set a new element with index
Definition at line 616 of file svec.h. References itpp::abs(), it_assert0, and itpp::Sparse_Vec< T >::resize_data(). |
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Set new elements with indices
Definition at line 761 of file svec.h. References itpp::abs(), itpp::Sparse_Vec< T >::clear(), it_assert0, itpp::max(), itpp::Sparse_Vec< T >::resize_data(), and itpp::Vec< Num_T >::size(). |
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Add element
Definition at line 631 of file svec.h. References it_assert0. Referenced by getSamples(), itpp::Sparse_Vec< T >::operator+=(), and itpp::Sparse_Vec< T >::operator-=(). |
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Add
Definition at line 659 of file svec.h. References it_assert0, itpp::max(), and itpp::Vec< Num_T >::size(). Referenced by itpp::Sparse_Vec< T >::set(). |
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Set the sparse vector to the all zero vector (removes all non-zero elements).
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Set the i-th element to zero (i.e. clear that element if it contains a non-zero value).
Definition at line 700 of file svec.h. References it_assert0. |
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Clear all non-zero elements of the sparse vector.
Definition at line 721 of file svec.h. Referenced by itpp::Sparse_Vec< T >::set(), and itpp::Sparse_Vec< T >::set_new(). |
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Clear the i-th element (if it contains a non-zero value).
Definition at line 728 of file svec.h. References it_assert0. |
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Extract the reference to the p-th non-zero data element.
Definition at line 217 of file svec.h. References itpp::Sparse_Vec< T >::remove_small_elements(). Referenced by itpp::operator *(). |
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Returns the p-th non-zero data element.
Definition at line 226 of file svec.h. References itpp::Sparse_Vec< T >::remove_small_elements(). |
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Returns the vector index of the p-th non-zero element.
Definition at line 235 of file svec.h. References itpp::Sparse_Vec< T >::remove_small_elements(). Referenced by itpp::operator *(). |
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Returns the p-th non-zero value in
Definition at line 244 of file svec.h. References itpp::Sparse_Vec< T >::remove_small_elements(). |
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Return sparse subvector from index
Definition at line 783 of file svec.h. References itpp::Sparse_Vec< T >::data, itpp::Sparse_Vec< T >::data_size, itpp::Sparse_Vec< T >::index, it_assert0, itpp::Sparse_Vec< T >::resize_data(), and itpp::Sparse_Vec< T >::used_size. |
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Returns the sum of all values squared.
Definition at line 806 of file svec.h. References itpp::sum(). |
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Assign sparse vector the value and length of the sparse vector
Definition at line 816 of file svec.h. References itpp::Sparse_Vec< T >::check_small_elems_flag, itpp::Sparse_Vec< T >::data, itpp::Sparse_Vec< T >::data_size, itpp::Sparse_Vec< T >::eps, itpp::Sparse_Vec< T >::index, itpp::Sparse_Vec< T >::used_size, and itpp::Sparse_Vec< T >::v_size. |
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Assign sparse vector the value and length of the dense vector
Definition at line 833 of file svec.h. References min, itpp::Sparse_Vec< T >::resize_data(), and itpp::Vec< Num_T >::size(). |
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Returns the sign inverse of all elements in the sparse vector.
Definition at line 856 of file svec.h. References itpp::Sparse_Vec< T >::data, and itpp::Sparse_Vec< T >::index. |
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Compare two sparse vectors. False if wrong sizes or different values.
Definition at line 870 of file svec.h. References itpp::Sparse_Vec< T >::index, itpp::Sparse_Vec< T >::remove_small_elements(), itpp::Sparse_Vec< T >::used_size, and itpp::Sparse_Vec< T >::v_size. |
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Add sparse vector
Definition at line 927 of file svec.h. References itpp::Sparse_Vec< T >::add_elem(), itpp::Sparse_Vec< T >::data, itpp::Sparse_Vec< T >::index, it_assert0, itpp::Sparse_Vec< T >::size(), and itpp::Sparse_Vec< T >::used_size. |
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Add vector
Definition at line 946 of file svec.h. References itpp::Sparse_Vec< T >::add_elem(), it_assert0, and itpp::Vec< Num_T >::size(). |
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Subtract sparse vector
Definition at line 961 of file svec.h. References itpp::Sparse_Vec< T >::add_elem(), itpp::Sparse_Vec< T >::data, itpp::Sparse_Vec< T >::index, it_assert0, itpp::Sparse_Vec< T >::size(), and itpp::Sparse_Vec< T >::used_size. |
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Subtract vector
Definition at line 980 of file svec.h. References itpp::Sparse_Vec< T >::add_elem(), it_assert0, and itpp::Vec< Num_T >::size(). |
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Multiply the scalar
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Divide all non-zero elements of the sparse vector with the scalar
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Addition v1+v2 where v1 and v2 are sparse vector.
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Scalar product v1*v2 where v1 and v2 are sparse vectors.
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Scalar product v1*v2 where v1 is a sparse vector and v2 is a dense vector.
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Scalar product v1*v2 where v1 is a dense vector and v2 is a sparse vector.
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Element wise multiplication of two sparse vectors.
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Element wise multiplication of a sparse vector and a dense vector.
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Element wise multiplication of a sparse vector and a dense vector returning a sparse vector.
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Element wise multiplication of a a dense vector and a sparse vector.
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Element wise multiplication of a a dense vector and a sparse vector returning a sparse vector.
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