abduct1Lect.pdf

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Department
Computer Science
Course
CMSC 298
Professor
Peter Khaiter
Semester
Fall

Description
Topics in Symbolic AI • chatbots • rule-based deduction • search • Bayesian classifiers • causation & abduction • expert systems • automated reasoning • machine learning Causation-Based Abduction problem user description abduction causal Viewpoint: cognitive model network Focus: diagnostic problem solving Plan: - human abductive reasoning - abductive expert systems 1 Abductive Inference facts explanation set of causes • cause-effect reasoning (“common sense reasoning”) • central feature is coming up with an explanation for observed facts by using causal relationships • ubiquitous: daily life, language understanding, visual understanding, medicine and law, criminal investigation, etc. • focus: diagnostic problem-solving Human Diagnostic Reasoning A Type of Abductive Reasoning symptoms diagnosis manifestations M set of disorders D Examples … explanation • medicine • automobile repair • electronics • software debugging • arithmetic errors • plumbing 2 Terminology: “multiple disorders” {car won’t
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