Results 51 to 60 of about 1,073,390 (172)

Outer approximation with conic certificates for mixed-integer convex problems [PDF]

Mathematical Programming Computation, 2018
A mixed-integer convex (MI-convex) optimization problem is one that becomes convex when all integrality constraints are relaxed. We present a branch-and-bound LP outer approximation algorithm for an MI-convex problem transformed to MI-conic form.
C. Coey, Miles Lubin, J. Vielma
semanticscholar   +1 more source

Lasso for hierarchical polynomial models

Canadian Journal of Statistics, EarlyView.
Abstract The divisibility conditions implicit in a polynomial hierarchy suggest parameter constraints in regression. With this idea, we establish strong and weak hierarchies for both the lasso and relaxed lasso. Our proposal extends prior work on hierarchical lasso, which was mainly concerned with models of degree 2.
H. Maruri‐Aguilar, S. Lunagómez
wiley   +1 more source

Object‐based deep learning for probabilistic convective‐core nowcasting from satellite data

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Convective cores detected from Meteosat infrared imagery are represented as compact physical objects to generate probabilistic nowcasts up to 6 h ahead. A spatio‐temporal transformer models interactions among evolving core populations and produces gridded probability forecasts across the western Sahel.
Mendrika Rakotomanga, Douglas J. Parker, Nadhir Ben Rached, Seonaid R. Anderson, Cornelia Klein, Steven C. Wells   +5 more
wiley   +1 more source

Co-optimizing location, capacity, and hourly scheduling of switchable capacitors in power distribution systems considering daily load patterns and voltage dependence

Results in Engineering
This paper introduces a two-stage optimization method for the optimal location, capacity, and hourly scheduling of switchable capacitors. Unlike existing approaches, the proposed optimization framework accounts for daily load consumption shapes and the ...
Nang-Van Pham, Xuan-Giang Phan
doaj   +1 more source

Sustainable Production Planning: Insights Into Factors, Models, and Solution Methods

Sustainable Development, EarlyView.
ABSTRACT Effective resource management remains a major challenge for organizations seeking to balance economic efficiency with environmental and social responsibility. In this context, production planning becomes a strategic mechanism for integrating sustainability into industrial operations.
Daysi Ortiz, Pedro Gómez‐Gasquet, Francisco Fraile   +2 more
wiley   +1 more source

Co-Planning of Integrated AC Electricity and Gas Systems Under N–1 Reliability Using a Progressive Contingency Screening Framework

IEEE Access
This paper presents a coordinated expansion planning model for electricity and natural gas systems, aiming to minimize investment and operational costs across interdependent infrastructures.
Majid Torabi, Mohammad Amin Latify, Mahmoud Fotuhi-Firuzabad, Frede Blaabjerg   +3 more
doaj   +1 more source

A Polar Topology Network Induces Elastic Stiffening in Ferroelectric Oxide Superlattices

Small, EarlyView.
The periodicity in BiFeO3/SrTiO3 superlattices tunes the system into a dense, elastically constrained polar texture state. This topology‐rich regime reveals a collective mechanical response in which interactions among polar topological defects restrict local deformations, producing a pronounced elastic stiffening.
Mohammad Moein Seyfouri, Peiran Tong, Yoonah Ko, Menghui Xia, Qi Zhang, Zijian Hong, Bin Xu, Seungbum Hong, He Tian, Nagarajan Valanoor, Daniel Sando   +10 more
wiley   +1 more source

Disjunctive cuts in Mixed-Integer Conic Optimization [PDF]

, 2022
This paper studies disjunctive cutting planes in Mixed-Integer Conic Programming. Building on conic duality, we formulate a cut-generating conic program for separating disjunctive cuts, and investigate the impact of the normalization condition on its ...
Lodi A., Vielma J. -P., Tanneau M.
core   +1 more source

New variants of variable neighbourhood search for 0-1 mixed integer programming and clustering [PDF]

, 2010
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Many real-world optimisation problems are discrete in nature.
Lazić, Jasmina
core   +5 more sources

A Preventive Static Security Control Strategy for Distribution Networks Based on Phase Shifting Transformer Loop‐Closing Devices

IEEJ Transactions on Electrical and Electronic Engineering, EarlyView.
As the share of renewable energy in the energy mix continues to increase, the penetration of distributed renewable generation in distribution networks is also rising steadily. Loop‐closing operation provides an effective means to enhance renewable energy accommodation across different grid partitions.
Ningyu Zhang, Yuqiao Jia, Xun Huang, Yuxuan Huang, Xin Zhao, Shan Gao, Jinyang Li   +6 more
wiley   +1 more source