Introduction to First-Order Logic and Prolog
10 Mar 2005 CS 3243 - FOL and Prolog 1 FOL and Prolog First Order Logic Chapter 8 10 Mar 2005 CS 3243 - FOL and Prolog 2 Outline Why FOL? Syntax and semantics of FOL Using FOL Wumpus world in FOL Knowledge engineering in FOL 10 Mar 2005 CS 3243 - FOL and Prolog 3 Pros and cons of propositional logic ☺ Propositional logic is declarative ☺ Propositional logic allows partial/disjunctive/negated infor
Microsoft PowerPoint - m9-inference-pub
3 Mar 2004 CS3243 - Inference 1 Inference in first-order logic Chapter 9 3 Mar 2004 CS3243 - Inference 2 Outline zReducing first-order inference to propositional inference zUnification zGeneralized Modus Ponens zForward chaining zBackward chaining zResolution 3 Mar 2004 CS3243 - Inference 3 Universal instantiation (UI) z Every instantiation of a universally quantified sentence is entailed by it: ∀
Microsoft PowerPoint - m8-fol-pub
3 Mar 2004 CS 3243 - Chapter 8 1 First-Order Logic Chapter 8 3 Mar 2004 CS 3243 - Chapter 8 2 Outline Why FOL? Syntax and semantics of FOL Using FOL Wumpus world in FOL Knowledge engineering in FOL 3 Mar 2004 CS 3243 - Chapter 8 3 Pros and cons of propositional logic ☺ Propositional logic is declarative ☺ Propositional logic allows partial/disjunctive/negated information (unlike most data structur
Lecture-12-Hadi-2.pptx
Lecture 12: An Introduc0on to Top-‐k Document Retrieval Hadi Amiri hadi@comp.nus.edu.sg Top-‐k Document Retrieval Search engines usually contain millions of relevant documents for each query, but we only examine a few docs, e.g. top-‐K. Top-‐k Document Retrieval How can we retrieve documents efficiently? Outline • Indexing and Compression • Index Organiza9on • Index Traversal • Query Processing
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