Advanced usage

Geometric clustering

1. htool::VirtualDirectionComputationStrategy defines the interface for choosing the direction whose orthogonal plane will be the cutting plane.

2. htool::VirtualSplittingStrategy defines how where split along the previous direction.

Hierarchical compression

1. htool::VirtualAdmissibilityCondition which is the admissible condition, i.e., the geometric a priori we have to define admissible bloc, see Hierarchical clustering.

2. htool::VirtualLowRankGenerator which defines the low-rank compression, see Low-rank compression.