Q9: Knowledge Representation Consider the following statements: 1. All children have a favourite toy. 2. Whoever likes dolls or soft toys is a child. 3. Fuzzy is a soft toy: SOFT-TOY (Fuzzy). 4. Ellen likes Fuzzy: LIKES (Ellen, Fuzzy). (a) Using only the following predicates CHILD(*), HAS-FAV-TOY(*), LIKES (*,*), DOLL(*) and SOFT-TOY(*), represent the two statements as predicate calculus well formed formulas (Wffs) Notes: The asterisks indicate the number of arguments in each predicate; keep your representation consistent with the predicates in statements 3 and 4 above.) (b) Convert these statements into clauses. (c) Use resolution refutation to prove that Ellen has a favourite toy. state the goal, and indicate clearly the number of the clause you are using, and any substitutions you make. Goal 5: HAS-FAV-TOY (Ellen). Negated goal: -HAS-FAV-TOY(Ellen).

Q9: Knowledge Representation Consider the following statements: 1. All children have a favourite toy. 2. Whoever likes dolls or soft toys is a child. 3. Fuzzy is a soft toy: SOFT-TOY (Fuzzy). 4. Ellen likes Fuzzy: LIKES (Ellen, Fuzzy). (a) Using only the following predicates CHILD(), HAS-FAV-TOY(), LIKES (,), DOLL() and SOFT-TOY(), represent the two statements as predicate calculus well formed formulas (Wffs) Notes: The asterisks indicate the number of arguments in each predicate; keep your representation consistent with the predicates in statements 3 and 4 above.) (b) Convert these statements into clauses. (c) Use resolution refutation to prove that Ellen has a favourite toy. state the goal, and indicate clearly the number of the clause you are using, and any substitutions you make. Goal 5: HAS-FAV-TOY (Ellen). Negated goal: -HAS-FAV-TOY(Ellen).

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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