Results 1 to 10 of about 455,231 (287)

Identifying Editions of the Ptolemy of Rome Maps (1478/90–1507/08) by Copper Plates Changes [PDF]

open access: goldISPRS International Journal of Geo-Information
Traditionally, it has been considered that the Ptolemaic or classical maps from the four editions of Ptolemy’s Geography published in Rome (1478, 1490, 1507, and 1508) are apparently indistinguishable at first glance because they have been printed from ...
Marcos F. Pavo-López   +1 more
doaj   +2 more sources

Parameter analysis and Reliability Evaluation of Road Traffic Noise Prediction Model for Highway Traffic Noise Evaluation [PDF]

open access: yes대한환경공학회지, 2022
The purpose of this study is to evaluate the reliability of prediction models(KHTN, RLS-90, CRTN, NMPB-08) that are widely used in road traffic noise analysis.
Jewon Yoon   +4 more
doaj   +1 more source

Hyper-parameter optimization for support vector machines using stochastic gradient descent and dual coordinate descent

open access: yesEURO Journal on Computational Optimization, 2020
We developed a gradient-based method to optimize the regularization hyper-parameter, C, for support vector machines in a bilevel optimization framework. On the upper level, we optimized the hyper-parameter C to minimize the prediction loss on validation ...
W.e.i. Jiang, Sauleh Siddiqui
doaj   +1 more source

A Survey on Mixed-Integer Programming Techniques in Bilevel Optimization

open access: yesEURO Journal on Computational Optimization, 2021
Bilevel optimization is a field of mathematical programming in which some variables are constrained to be the solution of another optimization problem. As a consequence, bilevel optimization is able to model hierarchical decision processes.
Thomas Kleinert   +3 more
doaj   +1 more source

Diurnal variation in atmospheric pressure in Siedlce in 2001-2022 [PDF]

open access: yesActa Scientiarum Polonorum. Formatio Circumiectus, 2023
Aim of the study: Rising and falling atmospheric pressure usually heralds changes in weather conditions such as temperature, air humidity, cloud cover, precipitation, and wind speed.
Elżbieta Radzka   +3 more
doaj   +1 more source

Presolving linear bilevel optimization problems

open access: yesEURO Journal on Computational Optimization, 2021
Linear bilevel optimization problems are known to be strongly NP-hard and the computational techniques to solve these problems are often motivated by techniques from single-level mixed-integer optimization.
Thomas Kleinert   +3 more
doaj   +1 more source

A robust basic cyclic scheduling problem

open access: yesEURO Journal on Computational Optimization, 2018
This paper addresses the Basic Cyclic Scheduling Problem where the processing times are affected by uncertainties. We formulate the problem as a two-stage robust optimization problem with a budgeted uncertainty set.
Idir Hamaz   +2 more
doaj   +1 more source

Study of heterosis, combining ability and gene action in brinjal (Solanum melongena L.) landraces of Odisha

open access: yesElectronic Journal of Plant Breeding, 2023
Twenty one F1 crosses resulting from half diallel mating of seven diverse local landraces of brinjal were studied to know the magnitude of heterosis.
Subha Laxmi Mishra1*, Pradyumna Tripathy1, Gouri Shankar Sahu1, Devraj Lenka2, Mihira Kumara Mishra3, Swapan Kumar Tripathy4, Gargi Gautami Padhiary1, Anita Mohanty5 and Swarnalata Das5
doaj   +1 more source

An efficient algorithm for the projection of a point on the intersection of two hyperplanes and a box in Rn

open access: yesEURO Journal on Computational Optimization, 2019
In this work, Rn we present an efficient strongly polynomial algorithm for the projection of a point on the intersection of two hyperplanes and a box in Rn.
CláudioP. Santiago   +4 more
doaj   +1 more source

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