TRRQRLRApx< T_value > Class Template Reference
Uses rank-revealing QR to compute low rank approximation. More...
#include <TLowRankApx.hh>
Inheritance diagram for TRRQRLRApx< T_value >:
Public Member Functions | |
| virtual std::unique_ptr< TMatrix< value_t > > | build (const TBlockCluster *bcl, const TTruncAcc &acc) const |
| virtual std::unique_ptr< TMatrix< value_t > > | build (const TBlockIndexSet &block_is, const TTruncAcc &acc) const |
 Public Member Functions inherited from TLowRankApx< T_value > | |
| virtual bool | has_statistics () const |
| indicate if algorithm provides statistics | |
Detailed Description
template<typename T_value>
class Hpro::TRRQRLRApx< T_value >
TRRQRLRApx uses rank-revealing QR to approximate a given matrix block.
For the approximation, the complete matrix block has to be evaluated,
hence complexity is at least O(n²).
Member Function Documentation
◆ build() [1/2]
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virtual |
build low rank matrix for block cluster bcl with rank defined by accuracy acc
Reimplemented from TLowRankApx< T_value >.
◆ build() [2/2]
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virtual |
build low rank matrix for block index set block_is with rank defined by accuracy acc
Implements TLowRankApx< T_value >.
