Results 21 to 30 of about 5,444 (211)

Pseudo basic steps: bound improvement guarantees from Lagrangian decomposition in convex disjunctive programming

open access: yesEURO Journal on Computational Optimization, 2018
An elementary, but fundamental, operation in disjunctive programming is a basic step, which is the intersection of two disjunctions to form a new disjunction.
DimitriJ. Papageorgiou   +1 more
doaj   +1 more source

Performance Variability in Mixed-Integer Programming [PDF]

open access: yes, 2013
The performance of mixed-integer programming solvers is subject to some unexpected variability that appears, for example, when changing from one computing platform to another, when permuting rows and/or columns of a model, when adding seemingly neutral changes to the solution process, etc.
LODI, ANDREA, Andrea Tramontani
openaire   +2 more sources

Conflict-Driven Heuristics for Mixed Integer Programming [PDF]

open access: yesINFORMS Journal on Computing, 2020
Two essential ingredients of modern mixed-integer programming solvers are diving heuristics, which simulate a partial depth-first search in a branch-and-bound tree, and conflict analysis, which learns valid constraints from infeasible subproblems.
Witzig, Jakob, Gleixner, Ambros
openaire   +3 more sources

Integer Programming Modeling on Group Decision Making With Incomplete Hesitant Fuzzy Linguistic Preference Relations

open access: yesIEEE Access, 2019
Complementing missing information and priority vector are of significance important aspects in group decision making (GDM) with incomplete hesitant fuzzy linguistic preference relations (HFLPRs).
Peng Wu   +3 more
doaj   +1 more source

Online Self-Healing Scheme of Distribution Network Based on Mixed Integer Linear Programming

open access: yesZhongguo dianli, 2023
The existing distribution network self-healing schemes cannot meet the online requirements. In this regard, an online distribution network self-healing scheme based on mixed integer linear programming is proposed.
Tiecheng LI   +5 more
doaj   +1 more source

Historical Foundation and Practical Guideline for Ferroelectric Switching Kinetic Studies

open access: yesAdvanced Functional Materials, EarlyView.
The P and U pulses in the conventional PUND measurements are not identical because of the interplay between switching current and the measurement circuit components. This circuit effect can lead to a shift in polarization transients and misinterpreted physics in the switching kinetics.
Yi Liang, Pat Kezer, John T. Heron
wiley   +1 more source

A study on education planning method for human operators considering production plans

open access: yesNihon Kikai Gakkai ronbunshu, 2014
This paper deals with an education planning method of human operators considering production plans. The human operators carry out machining operations by using manual machine tools based on their skills in target manufacturing systems.
Koji IWAMURA   +4 more
doaj   +1 more source

Outer Approximation Method for the Unit Commitment Problem with Wind Curtailment and Pollutant Emission

open access: yesMathematics, 2021
This paper considers the fast and effective solving method for the unit commitment (UC) problem with wind curtailment and pollutant emission in power systems.
Xiali Pang   +3 more
doaj   +1 more source

From Photoalignment to Structured Light: Liquid Crystal Platforms for Beam Shaping and Complex Wavefronts

open access: yesAdvanced Functional Materials, EarlyView.
Photoaligned and photopatterned liquid crystal platforms provide programmable control of optical phase, polarization, and spin‐orbit interactions, enabling compact generation of structured light and complex wavefronts. This review highlights how tailored molecular orientations transform simple beams into designed optical fields, opening versatile ...
Le Zhou   +6 more
wiley   +1 more source

Multimode Oxide‐Based Optoelectronic Memtransistor for In‐Sensor Vision Processing

open access: yesAdvanced Functional Materials, EarlyView.
A multimode optoelectronic memtransistor (OEMT) is demonstrated for vision explainable artificial intelligence (VXAI) hardware. By integrating optical sensing, electrical masking, and non‐volatile memory, the device enables key operations required for generating saliency information.
Min Gu Lee   +10 more
wiley   +1 more source

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