Search for tag: "reduction"

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05:46 ECS 220 8b:8.3-2 NL-WitnessExistence and… ECS 220 8b:8.3-2 NL-WitnessExistence and Reachability are NL-complete	ECS 220 8b:8.3-2 NL-WitnessExistence and Reachability are NL-complete log space input existence witness reachability reduction thing things configuration graph bits memory question urinary problem deterministically configurations element triple From David Doty on March 21st, 2021 0 likes 1 plays 0
05:39 ECS 220 8b:8.3-1 NL-completeness and logspace… ECS 220 8b:8.3-1 NL-completeness and logspace reductions	ECS 220 8b:8.3-1 NL-completeness and logspace reductions space log completeness reduction reductions output problem notion reachability edge input graph nodes tape np pair thing star lot problems From David Doty on March 21st, 2021 0 likes 1 plays 0
08:46 ECS 220 6b:7.2-2 showing problems are undecidable… ECS 220 6b:7.2-2 showing problems are undecidable by reduction from halting problem	ECS 220 6b:7.2-2 showing problems are undecidable by reduction from halting problem input problem epsilon question string thing reduction problems halts output behavior lot divisor x. function notion circuit numbers proof condition From David Doty on March 21st, 2021 0 likes 1 plays 0
07:35 ECS 220 5b:6.6-2 almost proof of Ladner's… ECS 220 5b:6.6-2 almost proof of Ladner's theorem	ECS 220 5b:6.6-2 almost proof of Ladner's theorem clique stage stages programs q0 strings string output problem x. point reduction np formula proof bees a. input reductions booleans From David Doty on March 21st, 2021 0 likes 1 plays 0
03:17 ECS 220 3a:3-5.2 recall Witness-Existence ECS 220 3a:3-5.2 recall Witness-Existence	ECS 220 3a:3-5.2 recall Witness-Existence circuit input witness problem existence computation circuits length steps reduction words outputs question size np bit kinds machines insight px From David Doty on March 21st, 2021 0 likes 2 plays 0
10:06 ECS 220 2c:5.3-2 NAE-SAT reduces to 3-Coloring ECS 220 2c:5.3-2 NAE-SAT reduces to 3-Coloring	ECS 220 2c:5.3-2 NAE-SAT reduces to 3-Coloring color graph formula clause gadgets coloring reduction colors assignment node nodes problem instance opposite orange choice words input constraint witness From David Doty on March 21st, 2021 0 likes 12 plays 0
08:40 ECS 220 2c:5.3-1 NAE-SAT is NP-complete ECS 220 2c:5.3-1 NAE-SAT is NP-complete	ECS 220 2c:5.3-1 NAE-SAT is NP-complete assignment clause sat problem phi direction prime formula instance reductions satisfiable input e3 literals cnf np reduction reduces negation clauses From David Doty on March 21st, 2021 0 likes 11 plays 0
11:09 ECS 220 2b:5.1 NP-completeness and reductions ECS 220 2b:5.1 NP-completeness and reductions	ECS 220 2b:5.1 NP-completeness and reductions problem np reduction problems instance input words b. reductions path graph verifier length urinary answer thing class lot 31st language From David Doty on March 21st, 2021 0 likes 17 plays 0
03:57 ECS 220 2a:4.2-1 3-Coloring reduces to CNF-SAT ECS 220 2a:4.2-1 3-Coloring reduces to CNF-SAT	ECS 220 2a:4.2-1 3-Coloring reduces to CNF-SAT graph algorithm coloring color reduction formula planar clauses input colorable cnf constraints implications structure edge variables node answer graphs constraint From David Doty on March 21st, 2021 0 likes 27 plays 0
05:27 ECS 120 9a:2 reducibility ECS 120 9a:2 reducibility	ECS 120 9a:2 reducibility algorithm problem reduction reductions kind problems subroutine instance b. x. terrain proof completeness np examples answer times introduction y. equals From David Doty on March 20th, 2021 0 likes 2 plays 0
03:43 ECS 120 8c:4 Cook-Levin Theorem if P neq NP, then… ECS 120 8c:4 Cook-Levin Theorem if P neq NP, then no NP-complete problem is in P	ECS 120 8c:4 Cook-Levin Theorem if P neq NP, then no NP-complete problem is in P reduction notes lecture problem np theorem problems cook question sat clique reductions levin complete object sense couple age examples width From David Doty on March 20th, 2021 0 likes 1 plays 0
12:07 ECS 120 8c:3 definition of NP-completeness ECS 120 8c:3 definition of NP-completeness	ECS 120 8c:3 definition of NP-completeness np problem problems reduction thing reducible language b. theorem things x. input f. function corollary subset hypothesis idea reductions output From David Doty on March 20th, 2021 0 likes 1 plays 0
02:03 ECS 120 8c:2 reduction between two problems is an… ECS 120 8c:2 reduction between two problems is an algorithm, but it does not solve either problem	ECS 120 8c:2 reduction between two problems is an algorithm, but it does not solve either problem question lot algorithm reduction graph formula instance algorithms reductions examples hardness job size grass formulas k. threshold phi sat problem From David Doty on March 20th, 2021 0 likes 1 plays 0
20:14 ECS 120 8c:1 3SAT is reducible to IndSet ECS 120 8c:1 3SAT is reducible to IndSet	ECS 120 8c:1 3SAT is reducible to IndSet phi clause literals edge edges nodes bar condition clauses reduction node conditions triple triples pair formula structure rule negation instance From David Doty on March 20th, 2021 0 likes 2 plays 0
02:27 ECS 120 8b:4 how to remember which direction… ECS 120 8b:4 how to remember which direction reductions go	ECS 120 8b:4 how to remember which direction reductions go instance algorithm reduction thing b. function side problem a. hardness direction reductions relationship x. outputs input f. picture sense notation From David Doty on March 20th, 2021 0 likes 2 plays 0
11:52 ECS 120 8b:2 definition of polynomial-time… ECS 120 8b:2 definition of polynomial-time reducibility	ECS 120 8b:2 definition of polynomial-time reducibility algorithm clique instance strings reduction b. input graph star problem idea answer a. output function compliment nodes pair requirement difficulty From David Doty on March 20th, 2021 0 likes 1 plays 0