Dependency-Directed Backtracking in Non-Deterministic Scheme

Dependency-Directed Backtracking in Non-Deterministic Scheme Zabih, Ramin Non-deterministic LISP can be used to describe a search problem without specifying the method used to solve the problem. We show that SCHEMER, a non-deterministic dialect of SCHEME, can support dependency-directed backtracking as well as chronological backtracking. Full code for a working SCHEMER interpreter that provides dependency-directed backtracking is included. This is a greatly revised version of a thesis submitted to the Massachusetts Institute of Technology Department of Electrical Engineering and Computer Science on January 2, 1987, in partial fulfillment of the requirements for the degree of Master of Science.