Search Results - ((location estimation) OR (simulation optimization)) techniques

Evaluation and optimization of wavelet technique to enhance the mapping accuracy of lightning VHF interferometry by Al-Ammari, Ammar Mohammed Qaid

“…In addition, a particle swarm optimization technique is used to optimize the trajectory of the CCWD-based lightning maps by finding the optimal sliding window of the cross-correlation. …”
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Two-phase optimal PMU placement considering complete topological observability level for single line contingency by Matsukawa, Yoshiaki, Watanabe, Masayuki, Mitani, Yasunori, Othman, Mohammad Lutfi

“…However, the number and the location of installed PMUs that realize topological observability for state estimation have to be optimized because of the economic perspective. …”
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Neural Network Preference Learning Approaches For Improving Agent-Based Meeting Scheduling Problems by Tang, En Lai

“…This strategy was extended with “preference estimation” technique to optimize the user preference level of negotiation outcome. …”
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Robust Linear Discriminant Analysis with Highest Breakdown Point Estimator by Yai, Fung Lim, Syed Yahaya, Sharipah Soaad, Ali, Hazlina

“…Linear Discriminant Analysis (LDA) is a supervised classification technique concerned with the relationship between a categorical variable and a set of interrelated variables.The main objective of LDA is to create a rule to distinguish between populations and allocating future observations to previously defined populations.The LDA yields optimal discriminant rule between two or more groups under the assumptions of normality and homoscedasticity.Nevertheless, the classical estimates, sample mean and sample covariance matrix, are highly affected when the ideal conditions are violated.To abate these problems, a new robust LDA rule using high breakdown point estimators has been proposed in this article.A winsorized approach used to estimate the location measure while the multiplication of Spearman’s rho and the rescaled median absolute deviation were used to estimate the scatter measure to replace the sample mean and sample covariance matrix, respectively.Simulation and real data study were conducted to evaluate the performance of the proposed model measured in terms of misclassification error rates.The computational results showed that the proposed LDA is always better than the classical LDA and were comparable with the existing robust LDAs.…”
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Optimal distributed generation and load shedding scheme using artificial bee colony- hill climbing algorithm considering voltage stability and losses indices by Ali Abdallah, Ali Emhemed

“…Meanwhile, the proposed ABC-HC optimization technique shows its ability to identify the bus location and the optimal active energy injection from the DG with a substantial power loss reduction. …”
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Winsorization on linear discriminant analysis by Lim, Yai-Fung, Syed Yahaya, Sharipah Soaad, Ali, Hazlina

“…The main objective of LDA is to classify multivariate data into different populations on the basis of a training sample with known group memberships.Under ideal conditions that is when the distribution is normal and variances are equal (homoscedasticity), LDA performs optimally. Nevertheless, the classical estimates, sample mean and sample covariance, are highly affected when the ideal conditions are violated.To alleviate these problems, a new robust LDA model using winsorized approach to estimate the location measure to replace the sample mean was introduced in this study. …”
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Robust linear discriminant rules with coordinatewise and distance based approaches by Lim, Yai Fung

“…To abate these conflicts, robust location and scale estimators via coordinatewise and distance based approaches have been applied in constructing new robust LDA. …”
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Reliability assessment of localizing different subsurface utilities using geophysics measurement / Mohammad shahrulnizam ismail by ismail, Mohammad shahrulnizam

“…Root Mean Square Error (RMSE) was computed to identify the optimal method. A velocity estimate via dielectric calculation using Topp's formula for GPR detection exhibits a better accuracy analysis than typical hyperbola fitting with RMSEs of 0.05 and 0.08. …”
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Enhancing location estimation accuracy by utilizing time difference of arrival techniques for wireless network by Md Mahyuddin, Mohamad Fahmi

“…This study aims to propose time difference of arrival (TDOA) techniques that applies the hyperbolic localization method to estimate the location of the user. …”
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Accurate range free localization in multi-hop wireless sensor networks by Abdulwahhab, Abdullah Raed

“…In this thesis, we signify the applied additive noise by the Gaussian mixture model and improve a localization algorithm depend on the received signal intensity to attain the greatest likelihood location, estimator. By employing Jensen’s inequality and semidefinite relaxation, the originally offered nonlinear and nonconvex estimator is relaxed into a convex optimization difficulty, which is able to be professionally resolved to acquire the totally best solution. …”
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Error Corrected Location Determination in An Outdoor Wireless Environment by Using Estimation, Filtering, Prediction and Fusion Techniques: A WIFI Application by Using Terrain Based Knowledge by Muhammad Mansoor Alam

“…Researchers have used different location estimation techniques, such as satellite based, geometrical, statistical and mapping techniques. …”

Development of simulation model & estimated accuracy for location determination technology (LDT) using enhanced observed time difference (E-OTD): article / Muhd Zulfadli Ishammudin by Ishammudin, Muhd Zulfadli

“…But different location services require different accuracy of the location estimate. …”
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Development of simulation model & estimated accuracy for location determination technology (LDT) using enhanced observed time difference (E-OTD) / Muhd Zulfadli Ishammudin by Ishammudin, Muhd Zulfadli

“…But different location services require different accuracy of the location estimate. …”
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Single base station mobile-based location estimation technique by S., Al Bawri S., C., Zidouri A.

“…The satellite positioning system which is named as Global Positioning System (GPS) is a sufficient and reliable technique for coordinating services.However, there are several techniques which can estimate the location of the user based on certain number of base stations (BS) which are depending on some parameters like multi-path components, reflections, diffractions, ducting, scattering ...etc. …”
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Combined TOA/DOA for location estimation in MIMO system by Awang Md Isa, Azmi, Haron, Nor Zaidi, Mohamad Isa, Mohd Sa'ari, Mohd Zin, Mohd Shahril Izuan, Zakaria, Zahriladha

“…Simulation results have been provided that show that the proposed combined schemes outperform the range-only algorithm in terms of estimated location accuracy. It has been shown that time of arrival (TOA)-based location can be employed as a baseline location estimation technique, with additional DOA measurements being used to further improve accuracy.…”
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Multi-floor indoor location estimation system based on wireless local area network by Chua, Tien Han

“…Location fingerprinting technique is employed to estimate Mobile Terminal’s (MT) location. …”
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Intelligent Optimization Techniques for Optimal Power Flow using Interline Power Flow Controller by Mohamed, Mohamed, K.H, Kondapalli, Rama Rao. K. S.

“…The simulation results validate the efficacy of the three optimization techniques and PSO technique is proved to be more efficient compared to the other two techniques.…”
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Process Planning Optimization In Reconfigurable Manufacturing Systems by Musharavati, Farayi

“…Analysis indicates that the performances of the implemented variant of simulated annealing are comparable to those of other optimization techniques developed in this thesis. …”
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Enhanced location and positioning in wimax networks with virtual mimo base station by Othman, Muhammad Hakim

“…The developed algorithm includes the effect of the geometric dilution of precision (GDOP) to assist with the location estimation accuracy. Simulation results show that the proposed technique outperforms the linear least square (LLS) algorithm in terms of estimated location accuracy.…”
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Improved Location And Positioning Utilizing Single MIMO Base Station In IMT-Advanced System by Azmi, Awang Md Isa, Mustafa H., Othman, Zahariah, Manap, Mohd Sa'ari, Mohamad Isa, Mohd Shahril Izuan, Mohd Zin, Mohd Shakir, Md Saat, Zahriladha, Zakaria

“…The developed algorithm includes the effect of the geometric dilution of precision (GDOP) to assist with the location estimation accuracy. The simulation results showed that the proposed SMVirBS technique always outperforms the linear least square (LLS) algorithm in terms of estimated location accuracy. …”
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