Definition. Compaction kernel [ftip-00GA]

✍️sourceAGENTDRAFTED

A compaction kernel is a randomized map \(K(dh\mid r)\) from records in \(\mathcal R\) to summaries in \(\mathcal H\). A deterministic summary is the special case \(K(dh\mid r)=\delta _{h(r)}\).