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Approaches to Knowledge Representation
Simple relational knowledge The simplest way of storing facts is to use a relational method…
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Knowledge Representation
What to Represent? Let us first consider what kinds of knowledge might need to be…
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Means-Ends Analysis
Allows both backward and forward searching.This means we could solve major parts of a problem…
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And-Or Graphs
Useful for certain problems where The solution involves decomposing the problem into smaller problems.We then…
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Heuristic Search
A heuristic is a method that might not always find the best solutionbut is guaranteed to find a…
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Problems and Search
Problem solving involves: problem definition -- detailed specifications of inputs and what constitutes an acceptable…
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Why use this data structure?
It enables attribute values to be retrieved quicklyassertions are indexed by the entitiesbinary predicates are…
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Extending Semantic Nets
Here we will consider some extensions to Semantic nets that overcome a few problems (see…
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Inference in a Semantic Net
Basic inference mechanism: follow links between nodes. Two methods to do this: Intersection search -- the…