Relevant bibliographies by topics / Algorithm efficiency / Dissertations / Theses
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Dissertations / Theses on the topic 'Algorithm efficiency'

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Published: 31 August 2024
Last updated: 31 July 2025

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1

Morgan, Wiley Spencer. "Increasing the Computational Efficiency of Combinatoric Searches." BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/6528.

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A new algorithm for the enumeration of derivative superstructures of a crystal is presented. The algorithm will help increase the efficiency of computational material design methods such as cluster expansion by increasing the size and diversity of the types of systems that can be modeled. Modeling potential alloys requires the exploration of all possible configurations of atoms. Additionally, modeling the thermal properties of materials requires knowledge of the possible ways of displacing the atoms. One solution to finding all symmetrically unique configurations and displacements is to genera
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Batbayar, Batsukh, and S3099885@student rmit edu au. "Improving Time Efficiency of Feedforward Neural Network Learning." RMIT University. Electrical and Computer Engineering, 2009. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20090303.114706.

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Feedforward neural networks have been widely studied and used in many applications in science and engineering. The training of this type of networks is mainly undertaken using the well-known backpropagation based learning algorithms. One major problem with this type of algorithms is the slow training convergence speed, which hinders their applications. In order to improve the training convergence speed of this type of algorithms, many researchers have developed different improvements and enhancements. However, the slow convergence problem has not been fully addressed. This thesis makes seve
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Freund, Robert M. "Theoretical Efficiency of A Shifted Barrier Function Algorithm for Linear Programming." Massachusetts Institute of Technology, Operations Research Center, 1989. http://hdl.handle.net/1721.1/5185.

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This paper examines the theoretical efficiency of solving a standard-form linear program by solving a sequence of shifted-barrier problems of the form minimize cTx - n (xj + ehj) j.,1 x s.t. Ax = b , x + e h > , for a given and fixed shift vector h > 0, and for a sequence of values of > 0 that converges to zero. The resulting sequence of solutions to the shifted barrier problems will converge to a solution to the standard form linear program. The advantage of using the shiftedbarrier approach is that a starting feasible solution is unnecessary, and there is no need for a Phase I-Phase II appro
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4

Khudhair, Ali Dheyaa. "A Simplified Routing Algorithm for Energy Efficiency in Wireless Sensor Networks." Available to subscribers only, 2009. http://proquest.umi.com/pqdweb?did=1885751071&sid=8&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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5

Lindberg, Joakim, and Martin Steier. "Efficiency of the hybrid AC3-tabu search algorithm for solving Sudoku puzzles." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-166421.

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There are many different algorithms for solving Sudoku puzzles, with one of the newer algorithms being the hybrid AC3-tabu search algorithm. Since the algorithm has not been subject of much research, the aim of this thesis is to increase the knowledge of it. This thesis evaluates the efficiency of the hybrid AC3-tabu search algorithm by analyzing how quickly it solves puzzles compared to two other solving algorithms: one using brute-force search, and one combining human solving techniques with brute-force search. This thesis also investigates if there is a correlation between the number of puz
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6

Chen, Daven 1959. "COMPARISON OF SCIRTSS EFFICIENCY WITH D-ALGORITHM APPLICATION TO ITERATIVE NETWORKS (TEST)." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/275572.

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Burger, Christoph Hartfield Roy J. "Propeller performance analys and multidisciplinary optimization using a genetic algorithm." Auburn, Ala, 2007. http://repo.lib.auburn.edu/2007%20Fall%20Dissertations/Burger_Christoph_57.pdf.

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8

Selek, I. (István). "Novel evolutionary methods in engineering optimization—towards robustness and efficiency." Doctoral thesis, University of Oulu, 2009. http://urn.fi/urn:isbn:9789514291579.

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Abstract In industry there is a high demand for algorithms that can efficiently solve search problems. Evolutionary Computing (EC) belonging to a class of heuristics are proven to be well suited to solve search problems, especially optimization tasks. They arrived at that location because of their flexibility, scalability and robustness. However, despite their advantages and increasing popularity, there are numerous opened questions in this research area, many of them related to the design and tuning of the algorithms. A neutral technique called Pseudo Redundancy and related concepts such as
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Kassa, Hailu Belay, Shenko Chura Aredo, and Estifanos Yohannes Menta. "ENERGY EFFICIENT ADAPTIVE SECTOR-BASED USER CLUSTERING ALGORITHM FOR CELLULAR NETWORK." International Foundation for Telemetering, 2016. http://hdl.handle.net/10150/624220.

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In this paper, we propose an adaptive and multi-sector-based user clustering algorithm which increases energy efficiency in a cellular network. Adaptive sectoring with dynamically changing sector angles is illustrated with a number of randomly distributed mobile stations. Transmitted power is equally shared by sectors before adaptive user clustering. The sector angles vary from 30 to 360 degrees by merging neighboring sectors and a sector is switched off till the user density exceeds a threshold (Td). The Td value is computed from the total number of users that the cell can accommodate o
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Silva, Cauane Blumenberg. "Adaptive tiling algorithm based on highly correlated picture regions for the HEVC standard." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/96040.

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Esta dissertação de mestrado propõe um algoritmo adaptativo que é capaz de dinamicamente definir partições tile para quadros intra- e inter-preditos com o objetivo de reduzir o impacto na eficiência de codificação. Tiles são novas ferramentas orientadas ao paralelismo que integram o padrão de codificação de vídeos de alta eficiência (HEVC – High Efficiency Video Coding standard), as quais dividem o quadro em regiões retangulares independentes que podem ser processadas paralelamente. Para viabilizar o paralelismo, os tiles quebram as dependências de codificação através de suas bordas, gerando i
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11

Nalluri, Purnachand. "A fast motion estimation algorithm and its VLSI architecture for high efficiency video coding." Doctoral thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/15442.

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Doutoramento em Engenharia Eletrotécnica<br>Video coding has been used in applications like video surveillance, video conferencing, video streaming, video broadcasting and video storage. In a typical video coding standard, many algorithms are combined to compress a video. However, one of those algorithms, the motion estimation is the most complex task. Hence, it is necessary to implement this task in real time by using appropriate VLSI architectures. This thesis proposes a new fast motion estimation algorithm and its implementation in real time. The results show that the proposed algori
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12

Défossez, Gautier. "Le système d'information multi-sources du Registre général des cancers de Poitou-Charentes. Conception, développement et applications à l'ère des données massives en santé." Thesis, Poitiers, 2021. http://theses.univ-poitiers.fr/64594/2021-Defossez-Gautier-These.

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Les registres du cancer sont au plan international l’outil de référence pour produire une vision exhaustive (non biaisée) du poids, de la dynamique et de la gravité du cancer dans la population générale. Leur travail de classification et de codage des diagnostics selon des normes internationales confère aux données finales une qualité spécifique et une comparabilité dans le temps et dans l’espace qui les rendent incontournables pour décrire l’évolution et la prise en charge du cancer dans un environnement non contrôlé. Leur travail repose sur un processus d’enquête rigoureux dont la complexité
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Potter, Christopher C. J. "Kernel Selection for Convergence and Efficiency in Markov Chain Monte Carol." Research Showcase @ CMU, 2013. http://repository.cmu.edu/dissertations/249.

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Markov Chain Monte Carlo (MCMC) is a technique for sampling from a target probability distribution, and has risen in importance as faster computing hardware has made possible the exploration of hitherto difficult distributions. Unfortunately, this powerful technique is often misapplied by poor selection of transition kernel for the Markov chain that is generated by the simulation. Some kernels are used without being checked against the convergence requirements for MCMC (total balance and ergodicity), but in this work we prove the existence of a simple proxy for total balance that is not as dem
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Schimuneck, Matias Artur Klafke. "Adaptive Monte Carlo algorithm to global radio resources optimization in H-CRAN." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/169922.

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Até 2020 espera-se que as redes celulares aumentam em dez vezes a área de cobertura, suporte cem vezes mais equipamentos de usuários e eleve a capacidade da taxa de dados em mil vezes, comparada as redes celulares atuais. A densa implantação de pequenas células é considerada uma solução promissora para alcançar essas melhorias, uma vez que aproximar as antenas dos usuários proporciona maiores taxas de dados, devido à qualidade do sinal em curtas distâncias. No entanto, operar um grande número de antenas pode aumentar significativamente o consumo de energia da infraestrutura de rede. Além disso
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Netzén, Örn André. "The Efficiency of Financial Markets Part II : A Stochastic Oscillator Approach." Thesis, Umeå universitet, Företagsekonomi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-170753.

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Over a long period of time, researchers have investigated the efficiency of financial markets. The widely accepted theory of the subject is the Efficient Market Hypothesis, which states that prices of financial assets are set efficiently. A common way to test this hypothesis is to analyze the returns generated by technical trading rules which uses historical prices in an attempt to predict future price development. This is also what this study aims to do. Using adjusted daily closing prices ranging over 2007 to 2019 for 5120 stocks listed on the U.S stock market, this study tests a momentum tr
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16

Lu, Qing. "Applications of the genetic algorithm optimisation approach in the design of high efficiency microwave class E power amplifiers." Thesis, Northumbria University, 2012. http://nrl.northumbria.ac.uk/13340/.

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In this thesis Genetic Algorithm Optimisation Methods (GA) is studied and for the first time used to design high efficiency microwave class E power amplifiers (PAs) and associated load patch antennas. The difficulties of designing high efficiency PAs is that power transistors are highly non linear and classical design techniques only work for resistive loads. There are currently no high efficient and accurate procedures for design high efficiency PAs. To achieve simplified and accurate design procedure, GA and new design quadratic equations are introduced and applied. The performance analysis
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17

Sciullo, Luca. "Energy-efficient wireless sensor networks via scheduling algorithm and radio Wake-up technology." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14539/.

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One of the most important requirements for wireless sensor networks (WSNs) is the energy efficiency, since sensors are usually fed by a battery that cannot be replaced or recharged. Radio wake-up - the technology that lets a sensor completely turn off and be reactivated by converting the electromagnetic field of radio waves into energy - is now one of the most emergent strategies in the design of wireless sensor networks. This work presents Scheduled on Demand Radio WakeUp (SORW), a flexible scheduler designed for a wireless sensor network where duty cycling strategy and radio wake-up t
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18

Vu, Chinh Trung. "An Energy-Efficient Distributed Algorithm for k-Coverage Problem in Wireless Sensor Networks." Digital Archive @ GSU, 2007. http://digitalarchive.gsu.edu/cs_theses/40.

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Wireless sensor networks (WSNs) have recently achieved a great deal of attention due to its numerous attractive applications in many different fields. Sensors and WSNs possesses a number of special characteristics that make them very promising in many applications, but also put on them lots of constraints that make issues in sensor network particularly difficult. These issues may include topology control, routing, coverage, security, and data management. In this thesis, we focus our attention on the coverage problem. Firstly, we define the Sensor Energy-efficient Scheduling for k-coverage (SE
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19

Parthasarathy, Nikhil Kaushik. "An efficient algorithm for blade loss simulations applied to a high-order rotor dynamics problem." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/189.

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In this thesis, a novel approach is presented for blade loss simulation of an aircraft gas turbine rotor mounted on rolling element bearings with squeeze film dampers, seal rub and enclosed in a flexible housing. The modal truncation augmentation (MTA) method provides an efficient tool for modeling this large order system with localized nonlinearities in the ball bearings. The gas turbine engine, which is composed of the power turbine and gas generator rotors, is modeled with 38 lumped masses. A nonlinear angular contact bearing model is employed, which has ball and race degrees of freedom and
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20

Sklavounos, Dimitris C. "Detection of abnormal situations and energy efficiency control in Heating Ventilation and Air Conditioning (HVAC) systems." Thesis, Brunel University, 2015. http://bura.brunel.ac.uk/handle/2438/12843.

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This research is related to the control of energy consumption and efficiency in building Heating Ventilation and Air Conditioning (HVAC) systems and is primarily concerned with controlling the function of heating. The main goal of this thesis is to develop a control system that can achieve the following two main control functions: a) detection of unexpected indoor conditions that may result in unnecessary power consumption and b) energy efficiency control regarding optimal balancing of two parameters: the required energy consumption for heating, versus thermal comfort of the occupants. Methods
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21

Kartal, Koc Elcin. "An Algorithm For The Forward Step Of Adaptive Regression Splines Via Mapping Approach." Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12615012/index.pdf.

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In high dimensional data modeling, Multivariate Adaptive Regression Splines (MARS) is a well-known nonparametric regression technique to approximate the nonlinear relationship between a response variable and the predictors with the help of splines. MARS uses piecewise linear basis functions which are separated from each other with breaking points (knots) for function estimation. The model estimating function is generated in two stepwise procedures: forward selection and backward elimination. In the first step, a general model including too many basis functions so the knot points are generated<
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22

Holmgren, Faghihi Josef, and Paul Gorgis. "Time efficiency and mistake rates for online learning algorithms : A comparison between Online Gradient Descent and Second Order Perceptron algorithm and their performance on two different data sets." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-260087.

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This dissertation investigates the differences between two different online learning algorithms: Online Gradient Descent (OGD) and Second-Order Perceptron (SOP) algorithm, and how well they perform on different data sets in terms of mistake rate, time cost and number of updates. By studying different online learning algorithms and how they perform in different environments will help understand and develop new strategies to handle further online learning tasks. The study includes two different data sets, Pima Indians Diabetes and Mushroom, together with the LIBOL library for testing. The result
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23

Dobson, William Keith. "Method for Improving the Efficiency of Image Super-Resolution Algorithms Based on Kalman Filters." Digital Archive @ GSU, 2009. http://digitalarchive.gsu.edu/math_theses/82.

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The Kalman Filter has many applications in control and signal processing but may also be used to reconstruct a higher resolution image from a sequence of lower resolution images (or frames). If the sequence of low resolution frames is recorded by a moving camera or sensor, where the motion can be accurately modeled, then the Kalman filter may be used to update pixels within a higher resolution frame to achieve a more detailed result. This thesis outlines current methods of implementing this algorithm on a scene of interest and introduces possible improvements for the speed and efficiency of th
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24

Gendre, Victor Hugues. "Predicting short term exchange rates with Bayesian autoregressive state space models: an investigation of the Metropolis Hastings algorithm forecasting efficiency." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1437399395.

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Waltsburger, Hugo. "Methodology and tooling for energy-efficient neural networks computation and optimization." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPAST195.

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Les réseaux de neurones ont connu d'impressionnants développements depuis l'émergence de l'apprentissage profond, vers 2012, et sont désormais l'état de l'art de toute une gamme de tâches automatisées, telles que le traitement automatique du langage naturel, la classification, la prédiction, etc. Néanmoins, dans un contexte où la recherche se focalise sur l'optimisation d'un unique indicateur de performance -- typiquement, le taux d'exactitude --, il apparaît que les performances tendent à croître de façon fiable, voire prévisible, en fonction de la taille du jeu de données d'entraînement, du
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Ramarathinam, Venkatesh. "A control layer algorithm for ad hoc networks in support of urban search and rescue (USAR) applications." [Tampa, Fla.] : University of South Florida, 2004. http://purl.fcla.edu/fcla/etd/SFE0000604.

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Usman, Modibo. "The Effect of the Implementation of a Swarm Intelligence Algorithm on the Efficiency of the Cosmos Open Source Managed Operating System." Thesis, Northcentral University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10810882.

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<p> As the complexity of mankind&rsquo;s day-to-day challenges increase, so does a need for the optimization of know solutions to accommodate for this increase in complexity. Today&rsquo;s computer systems use the Input, Processing, and Output (IPO) model as a way to deliver efficiency and optimization in human activities. Since the relative quality of an output utility derived from an IPO based computer system is closely coupled to the quality of its input media, the measure of the Optimal Quotient (OQ) is the ratio of the input to output which is 1:1. This relationship ensures that all IPO b
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28

Vasudevan, Meera. "Profile-based application management for green data centres." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/98294/1/Meera_Vasudevan_Thesis.pdf.

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This thesis presents a profile-based application management framework for energy-efficient data centres. The framework is based on a concept of using Profiles that provide prior knowledge of the run-time workload characteristics to assign applications to virtual machines. The thesis explores the building of profiles for applications, virtual machines and servers from real data centre workload logs. This is then used to inform static and dynamic application assignment, and consolidation of applications.
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Zhang, Ying. "Bayesian D-Optimal Design for Generalized Linear Models." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/30147.

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Bayesian optimal designs have received increasing attention in recent years, especially in biomedical and clinical trials. Bayesian design procedures can utilize the available prior information of the unknown parameters so that a better design can be achieved. However, a difficulty in dealing with the Bayesian design is the lack of efficient computational methods. In this research, a hybrid computational method, which consists of the combination of a rough global optima search and a more precise local optima search, is proposed to efficiently search for the Bayesian D-optimal designs for multi
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Plociennik, Kai. "From Worst-Case to Average-Case Efficiency – Approximating Combinatorial Optimization Problems." Doctoral thesis, Universitätsbibliothek Chemnitz, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-65314.

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In theoretical computer science, various notions of efficiency are used for algorithms. The most commonly used notion is worst-case efficiency, which is defined by requiring polynomial worst-case running time. Another commonly used notion is average-case efficiency for random inputs, which is roughly defined as having polynomial expected running time with respect to the random inputs. Depending on the actual notion of efficiency one uses, the approximability of a combinatorial optimization problem can be very different. In this dissertation, the approximability of three classical combinatoria
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31

Negrea, Andrei Liviu. "Optimization of energy efficiency for residential buildings by using artificial intelligence." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI090.

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La consommation, en général, représente le processus d’utilisation d’un type de ressource où des économies doivent être réalisées. La consommation d’énergie est devenue l’un des principaux problèmes d’urbanisation et de crise énergétique, car l’épuisement des combustibles fossiles et le réchauffement climatique mettent en péril l’utilisation de l’énergie des plantes. Cette thèse présent une méthode d’économie d’énergie a été adoptée pour la réduction de consommation d’énergie prévu le secteur résidentiel et les maisons passives. Un modèle mathématique basé sur des mesures expérimentales a été
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32

Bizkevelci, Erdal. "A Control Algorithm To Minimize Torque Ripple And Acoustic Noise Of Switched Reluctance Motors." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12609866/index.pdf.

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Despite its simple construction, robustness and low manufacturing cost, the application areas of SR motors are remained limited due to the high level of acoustic noise and torque ripple. In this thesis work, two different type of controllers are designed and implemented in order to minimize the acoustic noise and torque ripple which are considered as the major problems of SR motors. In this scope, first the possible acoustic noise sources are investigated. A sliding mode controller is designed and implemented to reduce the shaft torque ripple which is considered as a major source of acoustic n
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33

Hassan, Aakash. "Improving the efficiency, power quality, and cost-effectiveness of solar PV systems using intelligent techniques." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2023. https://ro.ecu.edu.au/theses/2676.

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Growing energy demand, depleting fossil fuels, and increasing environmental concerns lead to adaptation to clean and sustainable energy sources. Renewable energy sources are now believed to play a critical role in diminishing the deteriorating environment, supplying power to remote areas with no access to the grid, and overcoming the energy crisis by reducing the stress on existing power networks. Therefore, an upsurge in renewablesbased energy systems development has been observed during the previous few decades. In particular, solar PV technology has demonstrated extraordinary growth due to
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Vu, Chinh Trung. "Distributed Energy-Efficient Solutions for Area Coverage Problems in Wireless Sensor Networks." Digital Archive @ GSU, 2009. http://digitalarchive.gsu.edu/cs_diss/37.

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Wireless sensor networks (WSNs) have recently attracted a great deal of attention due to their numerous attractive applications in many different fields. Sensors and WSNs possess a number of special characteristics that make them very promising in a wide range of applications, but they also put on them lots of constraints that make issues in sensor network particularly challenging. These issues may include topology control, routing, coverage, security, data management and many others. Among them, coverage problem is one of the most fundamental ones for which a WSN has to watch over the environ
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Costa, Luis Herinque MagalhÃes. "UTILIZAÃÃO DE UM ALGORITMO GENÃTICO HÃBRIDO NA OPERAÃÃO DE SISTEMAS DE ABASTECIMENTO DE ÃGUA COM ÃNFASE NA EFICIÃNCIA ENERGÃTICA." Universidade Federal do CearÃ, 2010. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=4756.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>COSTA, L.H.M. UtilizaÃÃo de um algoritmo genÃtico hÃbrido na operaÃÃo de sistemas de abastecimento de Ãgua com Ãnfase na eficiÃncia energÃtica. Fortaleza, 2010. 146 p. Tese (Doutorado) - Universidade Federal do CearÃ, Fortaleza, 2010. Em geral, as regras operacionais dos Sistemas de Abastecimento de Ãgua (SAAs) visam à garantia da continuidade do abastecimento pÃblico, sem a consideraÃÃo da variaÃÃo da tarifa energÃtica ao longo do dia. Este fato ocasiona o aumento do custo energÃtico gerado pelos motores das bombas em funcioname
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WANG, YI-NING, and 王翊寧. "Bandwidth-Efficient Fast Algorithm for High Efficiency Video Coding." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/bdp32g.

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碩士<br>國立高雄第一科技大學<br>電腦與通訊工程系碩士班<br>106<br>Thanks to the fast developing high technology nowadays, mobile telecommunication 4G/LTE is popularized worldwide, and which makes a rapidly growing New Media related Industry.With the higher requirement for good quality an-d high resolution of Video/Webcam , the bandwidth and the amount of coding compressed data for transmitting Video have to be expanded. In order to keep high performance of video under efficient data compression, more complicated mathematical calculations is a must.In the newest HEVC, CU is quite diversified in order to match differen
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Chi, Haohsien, and 紀浩仙. "A Loading-Balance Algorithm for Improving Efficiency of CORBA." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/01950800360546613013.

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碩士<br>國立交通大學<br>資訊管理研究所<br>92<br>In the traditional distributed systems, the most popular characteristic is loading-balance. In CORBA which is an OMG proposed architecture, this characteristic is also pointed out. In many published ORBs, many vendors used additional agents to handle this characteristic. But we found there will be a problem with this solution, that is, if this agent fails, the whole system will not work . So we proposed a simplified model. We put this characteristic to be implemented on client’s side. That is , if the client stands alive and not all service providers fail, the
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Lin, Jia-Zhi, and 林佳志. "Improving Clustering Efficiency by SimHash-based K-Means Algorithm." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/nv495x.

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碩士<br>國立臺北科技大學<br>資訊工程系研究所<br>102<br>K-Means is one of the popular methods for clustering, but it needs a lot of processing time in similarity calculation, which caused lower performance. Some studies proposed new methods for finding better initial centroids to provide an efficient way of assigning the data points to suitable clusters with reduced time complexity. However, with the large amount of data, vector dimension will be higher and needs more time in similarity calculation. In this paper, we propose SimHash-based K-Means algorithm that used dimensionality reduction and Hamming distance
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Liu, Yu-Chu, and 劉又齊. "A Study of Information Hiding and Its Efficiency Algorithm." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/52702980666594969752.

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碩士<br>國立臺中技術學院<br>資訊科技與應用研究所<br>95<br>Recently, protecting the intellectual property rights of digitized information is a serious challenge. For the reason above, related information hiding technologies are becoming more and more important. In accordance with different requests, there are three different schemes proposed in this thesis. The first scheme presents a new block-based authentication watermarking for verifying the integrity of binary images. The original protected image is partitioned into individual blocks. Each block obtains the hashing message by a hashing function. An exclusive-
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Chen, chi-sheng, and 陳智聖. "The Algorithm of Constant Efficiency Tracking for Fast Charging." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/28010529108535118376.

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碩士<br>國立交通大學<br>電機與控制工程系所<br>98<br>As the growing of portable electronic devises, lithium batteries play an important rule in power management systems. In order to maximize the performance of lithium batteries, a high charging efficiency and less charging time are required. Today, the main charging method for lithium batteries is the constant current- constant voltage method (CC-CV), but it can not reaches the requirement of fast charging. This thesis presents a fast charging method, which improve charging speed at the cost of minimum charging efficiency. First, we search the relationship betw
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Chen, Ting-An, and 陳亭安. "Applying Advanced Operators to Improve the Efficiency of Genetic Algorithm." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/98963780385941744746.

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碩士<br>淡江大學<br>電機工程學系<br>87<br>Genetic Algorithm is a very important and effective optimizer because of its global searching capability. In this decade, Genetic Algorithms are applied in various problems in many disciplines. In general, the searching result does not depend on the initial guess since GA searches multiple points simultaneously, for which three operators (named as selection, crossover and mutation) are applied on some randomly generated initial population consisting of many individuals to achieve the goal of survival of the fittest. However, the price paid for the multiple-point s
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LIN, WEN-BIN, and 林文斌. "A study for improving the efficiency of Frank-Wolfe algorithm." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/35315928245004791342.

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碩士<br>國立交通大學<br>土木工程研究所<br>80<br>Frank-Wolfe 演算法是凸形非線性規劃問題(convex nonlinear programming pro- blem) 的解法之一，而在求解交通網路的均衡指派問題時，一般也是使用 Frank- Wolfe 演算法。此演算法的主要缺點是收斂速度太慢，針對此缺點，在過去已有 Fukushima(1984)、LeBlanc(1985)，以及Weintraub(1985) 等人修改此演算法，本 研究認為其中仍有很大發展空間，因此將研究作進一步的改善。本研究將在收斂條 件的要求更嚴格的考慮下，從以下兩方面著手，更進一步地提昇Frank-Wolfe 演算 法的計算效率： (1) 對Fukushima 的方法做完整的分析，找出更適合的策略。 (2) 結合Weintraub 與Fukushima 二者的不同改善方法。 最後，將以電腦測試求解網路交通量指派問題，以顯示本研究提出之改善策略所提 昇的計算效率。
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林詩凱. "Improving AODV Route Protocol Efficiency with Compromised Route Selection Algorithm." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/79852668330947717872.

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碩士<br>國立臺灣師範大學<br>機電科技研究所<br>96<br>Mobile ad hoc Networks （MANETs） is formed by a group of wireless equipment (node) that can move fast and no centralized management mechanism can be used. The communication between mobile nodes can be accomplished via the nearby mobile hosts interchanging messages. In case of the limited resources such as network bandwidth, memory capacity, and battery power, the efficiency of routing scheme in ad hoc networks becomes more important and challenging. In Mobile ad hoc Networks, most nodes are mobile and the routing path may be changed or disrupted quite often du
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Cosgaya, Lozano Adan Jose. "Engineering Algorithms for Solving Geometric and Graph Problems on Large Data Sets." 2011. http://hdl.handle.net/10222/13324.

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This thesis focuses on the engineering of algorithms for massive data sets. In recent years, massive data sets have become ubiquitous and existing computing applications, for the most part, cannot handle these data sets efficiently: either they crash or their performance degrades to a point where they take unacceptably long to process the input. Parallel computing and I/O-efficient algorithms provide the means to process massive amounts of data efficiently. The work presented in this thesis makes use of these techniques and focuses on obtaining practically efficient solutions for specific prob
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Cheng-HaoChen and 陳正浩. "A Fast CU Size Decision Algorithm for High Efficiency Video Coding." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/27k54a.

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碩士<br>國立成功大學<br>電機工程學系<br>103<br>High Efficiency Video Coding (HEVC) is the newest video coding standard. It provides the better compression performance compared with the existing standards. HEVC adopts the quad-tree structure which allows recursive splitting into four equally sized nodes, starting from the Coding Tree Unit (CTU). The quad-tree structure causes the better compression efficiency, but it requires the higher computational complexity. In order to reduce the computational complexity, we propose a fast CU size decision algorithm. The proposed algorithm consists of adaptive depth
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Wu, Sheng-Yi, and 吳昇益. "Using modified Dijkstra’s algorithm to improve the movement efficiency of robocar." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/97337776645458917800.

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碩士<br>國立陽明大學<br>醫學工程研究所<br>101<br>Abstract In recent years, the telehealthcare is very popular. Because the tele-healthcare can keep a watchful eye on information of patients or elderly people, and handle in anytime, in anywhere and by any device, If becomes an on going nursing behavior. Based on its concept, we builded a indoor positioning system by RFID Cartesian grids, which can guide the robocar move to the designated location , then to realize the circumstances with the patient. In this field, many factors will determine whether it can be access or not, such as location-awareness, path fi
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Chun, Chiu YiI, and 邱意淳. "High-Efficiency Prony-Based Algorithm for Time-Varying Power Signal Estimation." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/52473577196075665060.

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碩士<br>國立彰化師範大學<br>機電工程學系<br>99<br>ABSTRACT With the widespread use of nonlinear loads in the power system, harmonic distortion causes a serious pollution of power quality. Besides, the power unbalance between the generation and the load demand would make the fundamental frequency varying with time. These disturbances may introduce operational problems of power system equipments. Therefore, improving the power quality has become a great concern for both utilities and customers. The frequency-domain methods have been widely used for the signal processing because of its computational efficiency.
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Li, Yu-Lin, and 李育霖. "Adaptive Traffic Indication Algorithm for Energy Efficiency in IEEE 802.16e Systems." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/84550158708172448917.

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碩士<br>長庚大學<br>資訊工程學研究所<br>96<br>The efficiency of power saving mechanism on wireless communications will influence the time the mobile station (MSS) can operate. Due to the characteristics of centralized control in WiMAX system, the sleeping period of each subscriber is dominated by a base station (BS) based on their service types, traffic loads, and expected sleeping periods. The power saving mechanism uses an exponential backoff sleeping window manner to determine the sleeping period of each MS. In recently researches, some of them optimize the sleeping period by estimating the packet inter-
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Lin, Li-Jyun, and 林豊鈞. "Energy-Efficiency Scheduling Algorithm forMultiframe Real-Time Tasks in DVS Processor." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/42524271524671748259.

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碩士<br>國立高雄大學<br>資訊工程學系碩士班<br>100<br>An embedded system with a video decoder has become a new trend due to the applications of mobile multimedia and the consuming electronic products required in the life. For the considerations of low cost and high efficiency when the embedded system plays MPEG video, users require a proper quality of service. However, the amount of encoded data on each frame will affect the processing time. If the maximum execution times of tasks are used to do schedulability test, the quality of service of the system can be guaranteed. However, it will result in the higher en
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Fang, Han-Chiou, and 方瀚萩. "ast Intra Prediction Algorithm and Design for High Efficiency Video Coding." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/46070691957728794785.

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碩士<br>國立交通大學<br>電子工程學系 電子研究所<br>103<br>When compared to previous video standard H.264, High Efficiency Video Coding (HEVC) has significant computation complexity because of more PU size types and more intra prediction modes. To achieve real time encoding demands, this paper proposes a fast intra prediction algorithm and its design. The fast algorithm can be divided into two parts. The first part is the fast intra prediction unit (PU) size selection that is a gradient weight controlled block size selection to reduce PU sizes to two. These two PU sizes will be reduced to one for more complexity
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