Expert systems | Automated reasoning | Logic in computer science

Backward chaining

Backward chaining (or backward reasoning) is an inference method described colloquially as working backward from the goal. It is used in automated theorem provers, inference engines, proof assistants, and other artificial intelligence applications. In game theory, researchers apply it to (simpler) subgames to find a solution to the game, in a process called backward induction. In chess, it is called retrograde analysis, and it is used to generate table bases for chess endgames for computer chess. Backward chaining is implemented in logic programming by SLD resolution. Both rules are based on the modus ponens inference rule. It is one of the two most commonly used methods of reasoning with inference rules and logical implications – the other is forward chaining. Backward chaining systems usually employ a depth-first search strategy, e.g. Prolog. (Wikipedia).

Backward chaining
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Chain drive 1E

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From playlist Mechanisms

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From playlist Mechanisms

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Chain drive 2E

Converting continuous rotation into reciprocating translation with dwells at both ends of the course. Two sprockets are identical. The course length is equal to sprocket pitch diameter. The dwell time depends on the axle distance of two sprockets. STEP files of this video: http://www.medi

From playlist Mechanisms

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Backward & Forward Chaining

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More resources available at www.misterwootube.com

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Belt drive 2

Used with shafts at right angle rotating in one definite direction. In order to prevent the belt from leaving the pulleys the latter should be sufficiently wide and fixed and secured finally only after a trial run. STEP files of this video: http://www.mediafire.com/file/deesq8p6foeqiy1/B

From playlist Mechanisms

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Belt drive 8

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From playlist Mechanisms

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Related pages

Inference engine | Opportunistic reasoning | Proof assistant | Logic programming | ECLiPSe | Depth-first search | Logical consequence | Modus tollens | Game theory | Consequent | Antecedent (logic) | Inference | Artificial intelligence | Backtracking | Affirming the consequent | Subgame | Forward chaining | Modus ponens | Backward induction | Prolog | SLD resolution