Results 41 to 50 of about 350,084 (285)

Some lower bounds on sparse outer approximations of polytopes [PDF]

, 2014
Motivated by the need to better understand the properties of sparse cutting-planes used in mixed integer programming solvers, the paper [2] studied the idealized problem of how well a polytope is approximated by the use of sparse valid inequalities.
Dey, Santanu S., Iroume, Andres, Molinaro, Marco   +2 more
core  

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

Eigenvalue bounds of the shift-splitting preconditioned singular nonsymmetric saddle-point matrices

Journal of Inequalities and Applications, 2016
For singular nonsymmetric saddle-point problems, a shift-splitting preconditioner was studied in (Appl. Math. Comput. 269:947-955, 2015). To further show the efficiency of the shift-splitting preconditioner, we provide eigenvalue bounds for the nonzero ...
Quan Shi, Qin-Qin Shen, Lin-Quan Yao
doaj   +1 more source

Two-Term Disjunctions on the Second-Order Cone

, 2014
Balas introduced disjunctive cuts in the 1970s for mixed-integer linear programs. Several recent papers have attempted to extend this work to mixed-integer conic programs.
Kilinc-Karzan, Fatma, Yildiz, Sercan
core   +1 more source

Study of Resistive Switching Dynamics and Memory States Equilibria in Analog Filamentary Conductive‐Metal‐Oxide/HfOx ReRAM via Compact Modeling

Advanced Electronic Materials, EarlyView.
A physics‐based compact model for Conductive‐Metal‐Oxide/HfOx ReRAM, accounting for ion dynamics, electronic conduction, and thermal effects, is presented. Accurate and versatile simulations of analog non‐volatile conductance modulation and memory state stabilization enable reliable circuit‐level studies, advancing the optimization of neuromorphic and ...
Matteo Galetta, Donato Francesco Falcone, Victoria Clerico, Wooseok Choi, Stephan Menzel, Antonio La Porta, Tommaso Stecconi, Folkert Horst, Bert Jan Offrein, Valeria Bragaglia   +9 more
wiley   +1 more source

Causal inference with imperfect instrumental variables

Journal of Causal Inference, 2022
Instrumental variables allow for quantification of cause and effect relationships even in the absence of interventions. To achieve this, a number of causal assumptions must be met, the most important of which is the independence assumption, which states ...
Miklin Nikolai, Gachechiladze Mariami, Moreno George, Chaves Rafael   +3 more
doaj   +1 more source

Development of E-Worksheet on Linear Equations and Inequalities Topics Based on Tri-N

Journal of Medives: Journal of Mathematics Education IKIP Veteran Semarang, 2021
The purpose of this study was to design e-worksheet mathematics on the subject of linear equations and inequalities based on Tri-N and to determine the validity of mathematics e-worksheet on the subject of linear equations and inequalities based on Tri-N.
Nisa Wijayanti, Tri Astuti Arigiyati, Fikri Aulia, Sri Adi Widodo   +3 more
doaj   +1 more source

Are all meats substitutes? A basket‐and‐expenditure‐based approach

Agribusiness, EarlyView.
Abstract This study examines the relationship among animal‐based meat and plant‐based meat alternatives (PBMAs) using a basket‐and‐expenditure‐based choice experiment. In particular, we examine whether animal‐based meat products are substitutes or complements with PBMAs.
Clinton L. Neill, Logan L. Britton
wiley   +1 more source

Zero-one IP problems: Polyhedral descriptions & cutting plane procedures [PDF]

, 1994
A systematic way for tightening an IP formulation is by employing classes of linear inequalities that define facets of the convex hull of the feasible integer points of the respective problems.
Abdul-Hamid, F, Mitra, G, Yarrow, L
core  

Foreign labor, peer‐networking and agricultural efficiency in the Italian dairy sector

Agribusiness, EarlyView.
Abstract While the presence of immigrants in the agricultural sector is widely acknowledged, the empirical evidence on its economic consequences is lacking, especially from a microeconomic perspective. Using the Farm Accountancy Data Network panel data for Italian dairy farms in the period 2008–2018, the present study investigates the relationship ...
Federico Antonioli, Simone Severini, Mauro Vigani   +2 more
wiley   +1 more source