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Browsing by Subject "Simulated annealing"

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Comparison between statistical and optimization methods in accessing unmixing of spectrally similar materials

Author: Debba, Pravesh ; Maina, J ; Willemse, E Date: Nov 2010 This paper reports on the results from ordinary least squares and ridge regression as statistical methods, and is compared to numerical optimization methods such as the stochastic method for global optimization, simulated annealing, particle ... Read more
Comparison of metaheuristic algorithms for interface-constrained channel assignment in a hybrid Dynamic Spectrum Access – Wi-Fi infrastructure WMN

Author: Zlobinsky, N ; Johnson, DL ; Mishra, AK ; Lysko, Albert A Date: Feb 2022 In this work, we evaluate the application of four different metaheuristic optimisation algorithms for solving the channel assignment problem in a multi-radio multi-channel Wireless Mesh Network (WMN) using Dynamic Spectrum Access (DSA). The ... Read more
Deriving optimal exploration target zones on mineral prospectivity maps

Author: Debba, Pravesh ; Carranza, EJM ; Stein, A ; Van der Meer, FD Date: Aug 2008 This paper describes a quantitative methodology for deriving optimal exploration target zones based on a probabilistic mineral prospectivity map. The methodology is demonstrated in the Rodalquilar mineral district in Spain. A subset of known ... Read more
Field sampling scheme optimization using simulated annealing

Author: Debba, Pravesh Date: Oct 2010 This chapter discusses the methodology of using simulated annealing in deriving optimal sampling schemes to target a specific mineral, for example, alunite. Read more
Manifold adaptation for constant false alarm rate ship detection in South African oceans

Author: Schwegmann, CP ; Kleynhans, W ; Salmon, BP Date: Apr 2015 The detection of ships at sea is a difficult task made more so by uncooperative ships, especially when using transponder based ship detection systems. Synthetic Aperture Radar imagery provides a means of observation independent of the ships ... Read more
Optimal exploration target zones

Author: Debba, Pravesh ; Carranza, EJM ; Stein, A ; Van der Meer, FD Date: Sep 2008 This research describes a quantitative methodology for deriving optimal exploration target zones based on a probabilistic mineral prospectivity map. In order to arrive at out objective, we provide a plausible answer to the following question: ... Read more c b
Optimal exploration target zones

Author: Debba, Pravesh ; Carranza, EJM ; Stein, A ; Van der Meer, FD Date: Sep 2008 This research describes a quantitative methodology for deriving optimal exploration target zones based on a probabilistic mineral prospectivity map. In order to arrive at out objective, we provide a plausible answer to the following question: ... Read more
Optimal individual supervised hyperspectral band selection distinguishing savannah trees at leaf level

Author: Debba, Pravesh ; Cho, Moses A ; Mathieu, Renaud SA Date: Aug 2009 This paper uses simulated annealing and focus on the spectral angle mapper (SAM), to demonstrate how the separability of two mean spectra from different species can be increased by choosing the bands that maximize the metric. It is known that ... Read more
Optimal sampling schemes for vegetation and geological field visits

Author: Debba, Pravesh Date: Jul 2012 The presentation made to Wits Statistics Department was on common classification methods used in the field of remote sensing, and the use of remote sensing to design optimal sampling schemes for field visits with applications in vegetation ... Read more
Optimal spatial sampling scheme to characterize mine tailings

Author: Debba, Pravesh ; Carranza, EJM ; Stein, A ; Van der Meer, FD Date: Aug 2009 This research discusses a novice method for sampling geochemicals to characterize mine tailings. Researchers model the spatial relationships between a multi-element signature and abundance estimates of secondary iron-bearing minerals in mine ... Read more
Simulated annealing CFAR threshold selection for South African ship detection in ASAR imagery

Author: Schwegmann, CP ; Kleynhans, W ; Salmon, BP Date: Jul 2014 Synthetic Aperture Radar images are able to detect ships that would be hidden to tradition ship tracking methods due to their transponders being turned off. Using a SAR image as input, the CFAR method can highlight these ships given a correctly ... Read more
Simulation and channel assignment by Simulated Annealing of a wireless mesh network using Dynamic Spectrum Access

Author: Zlobinsky, N ; Mishra, AK ; Johnson, DL ; Lysko, Albert A Date: Nov 2021 This work tackles a new angle to the Channel Assignment (CA) problem, which has otherwise been fairly widely studied for allocating channels optimally to access points and ad-hoc network nodes. Wireless Mesh Networks (WMNs) using Dynamic ... Read more
Using remote sensing images to design optimal field sampling schemes

Author: Debba, Pravesh Date: Aug 2008 At this presentation, the author discussed a statistical method for deriving optimal spatial sampling schemes. First I focus on ground verification of minerals derived from hyperspectral data. Spectral angle mapper (SAM) and spectral feature ... Read more

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Browsing by Subject "Simulated annealing"

Browsing by Subject "Simulated annealing"

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All of ResearchSpace

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