Proceedings Abstracts of the Twenty-Fourth International Joint Conference on Artificial Intelligence

A Top-Down Compiler for Sentential Decision Diagrams / 3141
Umut Oztok, Adnan Darwiche

The sentential decision diagram (SDD) has been recently proposed as a new tractable representation of Boolean functions that generalizes the influential ordered binary decision diagram (OBDD). Empirically, compiling CNFs into SDDs has yielded significant improvements in both time and space over compiling them into OBDDs, using a bottom-up compilation approach. In this work, we present a top-down CNF to SDD compiler that is based on techniques from the SAT literature. We compare the presented compiler empirically to the state-of-the-art, bottom-up SDD compiler, showing orders-of-magnitude improvements in compilation time.