method
heuristics: Avoid dot product as much as possible
#347
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Spotted another possible optimization
xref #346
Annoyingly
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asv
is broken and not running now but in a notebook:Even better now since we can use
sparsity(bitmask)
as a proxy instead ofsparsity(containment)
This avoids an expensive sparse matrix dot product whenbitmask
isn't particularly sparse: