Philosophy Dictionary of ArgumentsHome | |||
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Decisions: Decisions are choices that we make between two or more options, which can have a significant impact on our lives. It is usually assumed that decisions cannot be reversed._____________Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments. | |||
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AI Research on Decisions - Dictionary of Arguments
Norvig I 610 Decisions/AI research/agents/uncertainty/Norvig/Russell: a) A goal-based agent has a binary distinction between good (goal) and bad (non-goal) states, b) A decision-theoretic agent has a continuous measure of outcome quality. Decision theory: basic principle: the maximization of expected utility (MEU). Decision-making systems: (…) a formalism called a decision network (also known as an influence diagram) that extends Bayesian networks by incorporating actions and utilities. Uncertainty: [When] we deal with nondeterministic partially observable environments (…) the agent may not know the current state, we omit it and define RESULT(a) as a random variable whose values are the possible outcome states. Norvig I 611 The agent’s preferences are captured by a utility function, U(s), which assigns a single number to express the desirability of a state. The expected utility of an action given the evidence, EU(a|e), is just the average utility value of the outcomes, weighted by the probability that the outcome occurs (…). The principle of maximum expected utility (MEU) says that a rational agent should choose the action that maximizes the agent’s expected utility (…). >Utility/AI research, >Utility theory/Norvig, >Rationality/AI research, >Certainty effect/Kahneman/Tversky, >Ambiguity/Kahneman/Tversky._____________Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution. Translations: Dictionary of Arguments The note [Concept/Author], [Author1]Vs[Author2] or [Author]Vs[term] resp. "problem:"/"solution:", "old:"/"new:" and "thesis:" is an addition from the Dictionary of Arguments. If a German edition is specified, the page numbers refer to this edition. |
AI Research Norvig I Peter Norvig Stuart J. Russell Artificial Intelligence: A Modern Approach Upper Saddle River, NJ 2010 |