Search for tag: "arcs"

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51:56 lecture-2023-02-17 lecture-2023-02-17	lecture-2023-02-17 network matrix flow direction basis problems edge cycle arcs tree edges variables problem graph vector things trees minus cardinality subset From Matthias Koeppe 0 likes 15 plays 0
08:25 Constructing the Pentagon Part 2: Angle… Constructing the Pentagon Part 2: Angle constructions	Constructing the Pentagon Part 2: Angle constructions angle distance length point triangle points circle arc edge hexagon arm compass segment error half unit vertex bit arcs circles From Joseph Biello 0 likes 9 plays 0
49:25 2020-11-06: Multi-commodity flow, transformations… 2020-11-06: Multi-commodity flow, transformations (MAT 168 Optimization)	2020-11-06: Multi-commodity flow, transformations (MAT 168 Optimization) Transforming network problems with lower bounds. Transforming node-capacitated problems to arc-capacitated problems. Multi-commodity flow problems. notes-2020-11-06.pdf Videos and all other materials… flow arc network uv situation commodity matrix constraints node luv capacity capacities arcs commodities side hand conservation variables capital thing From Matthias Koeppe 0 likes 22 plays 0
49:09 2020-11-04: Network problem transformations (MAT… 2020-11-04: Network problem transformations (MAT 168 Optimization)	2020-11-04: Network problem transformations (MAT 168 Optimization) Artificial source/sink nodes to model unbalanced transportation or flow problems, or single-commodity flow problems with multiple sources/sinks. Transforming maximum-flow problems to minimum-cost… flow network problem node nodes cost things arc situation source supply arcs side max capacities trick capacity balance conservation sum From Matthias Koeppe 0 likes 31 plays 0
46:08 2020-11-02: Transportation, min-cost flow… 2020-11-02: Transportation, min-cost flow problems (MAT 168 Optimization)	2020-11-02: Transportation, min-cost flow problems (MAT 168 Optimization) Structure of the node-arc incidence matrix, rank deficiency. Generalizing the classic transportation problem to transportation problems with transshipment nodes, and to general (single commodity)… matrix arcs flow demand network method simplex row node rows constraint side supply rank structure constraints outflow problem transshipment warehouses From Matthias Koeppe 0 likes 32 plays 0
49:30 2020-10-30: Directed graphs, transportation… 2020-10-30: Directed graphs, transportation models (MAT 168 Optimization)	2020-10-30: Directed graphs, transportation models (MAT 168 Optimization) Directed simple graphs. Generalizing the assignment model to transportation models. notes-2020-10-30.pdf Videos and all other materials are copyright 2020 Matthias Köppe and shared as Open… supply demand graph model problem transportation arc side flow unit things drivers constraints variables node arcs vertices matrix driver suppliers From Matthias Koeppe 0 likes 32 plays 0