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Showing 1 to 20 of 28 for “"Weight functions"”.
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Portfolio constuction using robust weight functions
… perform very well. The Huber and Tukey Bisquare weights are considered in this project to enhance these models in capturing these outlying observations. The Huber weights in the Improved Sharpe (Troskie-Hossain) Single Index model are found to be giving a better and more realistic optimal …
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LOG-SUPERMODULARITY OF WEIGHT FUNCTIONS AND THE LOADING MONOTONICITY OF WEIGHTED INSURANCE PREMIUMS
… premiums has raised a question as to what weight functions would produce loading-monotonic premiums. In this thesis we demonstrate a decisive role of log-supermodularity in answering this question. As a consequence, we establish - at a stroke - the loading monotonicity of a number of well- …
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The best truncation point for the estimated spectral density function of a stationary time series
… However, if the estimator is to be consistent, a weight function which satisfies certain conditions must be added to the periodogram estimator. If the weight function is a truncated function, the estimator of the spectral density function is labeled a truncated estimator. For this type of …
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The Optimal Weighting of Pre-Election Polling Data
… and predict election results. The relative weights for the state-level data from the 2006 U.S. senatorial races are considered based on the date on which the polls were conducted. Long- and short-memory weight functions are developed to specify the relative value of historical polling data. …
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ΟΛΟΚΛΗΡΩΤΙΚΕΣ ΚΑΙ ΟΛΟΚΛΗΡΩΔΙΑΦΟΡΙΚΕΣ ΕΞΙΣΩΣΕΙΣ ΜΕ ΛΟΓΑΡΙΘΜΙΚΕΣ ΙΔΙΟΜΟΡΦΙΕΣ: ΑΡΙΘΜΗΤΙΚΗ ΕΠΙΛΥΣΗ & ΕΦΑΡΜΟΓΕΣ ΣΤΗΝ ΕΠΙΠΕΔΗ ΕΛΑΣΤΙΚΟΤΗΤΑ
… IS CONCERNED, VARIOUS COMBINATIONS OF SINGULAR WEIGHT FUNCTIONS WITH SINGULAR KERNELS, LOGARITHMIC OR CAUCHY TYPE, ARE CONSIDERED. AS FAR AS THE METHODOLOGY IS CONCERNED, BOTH THE METHOD OF "SPECIAL" AND THAT OF "ARBITRARY COLOCATION POINTS XK" ARE EMPLOYED.
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ΠΡΟΣΟΜΟΙΩΣΗ ΕΞΕΛΙΞΗΣ ΑΥΤΟΔΙΕΓΕΙΡΟΜΕΝΩΝ ΤΑΛΑΝΤΩΣΕΩΝ ΚΑΤΑ ΤΗΝ ΤΟΡΝΕΥΣΗ ΚΑΙ ΤΟ ΦΡΑΙΖΑΡΙΣΜΑ ΜΕ ΣΚΟΠΟ ΤΟΝ ΠΡΟΣΔΙΟΡΙΣΜΟ ΔΥΝΑΜΙΚΑ ΕΥΣΤΑΘΩΝ ΣΥΝ...
… THE EXPERIMENTAL ASSESSMENT OF THE TRANSFER FUNCTIONS OF THE VIBRATIONAL SYSTEM MACHINE TOOL-TOOL WORKPIECE IN THE CUTTING REGION, AS WELL AS THE EXPERIMENTAL DETERMINATION OF CONSTANTS THAT ARE INTRODUCED TO THE USED CUTTING FORCE ANALYTICAL EXPRESSION. BY CALCULATING THE WEIGHT FUNCTIONS …
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Approximate Transversals of Latin Squares
… transversals, weak orthogonal mates, integral weight functions on the cells of a latin square, applications of Alon's Combinatorial Nullstellensatz to latin squares, and complete mappings of finite loops.</p>
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Pólya's Enumeration Theorem and Its Applications
… on Burnside's lemma, the cycle index, weight functions, configurations and the configuration generating function. After the proof of PET, it is applied to the enumerations of colorings of polytopes of dimension 2 and 3, including necklaces, the cube, and the truncated icosahedron. The …
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Dynamic grid adaption using the LPE equation
… also covers different types and treatment of weight functions needed to represent areas of high solution activity and a range of techniques necessary to make the use of adaptive grids practical, including geometry modelling and grid quality control. The technique is implemented on simple …
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Instabilities in Multiphysics Problems: Micro- and Nano-electromechanical Systems, and Heat-Conducting Thermoelastoviscoplastic Solids
… (MLS) approximation is used to generate basis functions for the trial solution, and the basis for test functions is taken to be either the weight functions used in the MLS approximation, or the same as for the trial solution. In this case the method becomes Bubnov-Galerkin. Essential …
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Batch and Online Implicit Weighted Gaussian Processes for Robust Novelty Detection
… expensive. Inspired by the use of weights in quasi-robust statistics, this work introduces a particular type of weight functions, called here data weighers, in order to obtain robust GPs that do not require approximation techniques and retain the simplicity of standard GPs. This …
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Nontraditional Positional Games: New methods and boards for playing Tic-Tac-Toe
… strategy for the second player involving weight functions. For four classes of nested boards we provide a strategy and thresholds for the second player to force a draw playing a traditional positional game as well as the new hop-positional game. For example we show that the second player …
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Nontraditional Positional Games: New methods and boards for playing Tic-Tac-Toe
… strategy for the second player involving weight functions. For four classes of nested boards we provide a strategy and thresholds for the second player to force a draw playing a traditional positional game as well as the new hop-positional game. For example we show that the second player …
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Estimation problems connected with stochastic processes
… distributions for the time differences and of weight functions, the expectations of the randomized estimators can be made equivalent to the expectations of the standard estimators or the estimators of Chapter 2. Since the randomized estimator is much simpler to use than the standard estimator, …
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Weighted Generalization of Rayleigh and Related Class of Distributions
<p>Weighted distributions occur naturally and frequently in research related to reliability, bio-medicine, ecology and in the modeling of clustered sample, heterogeneity, and extraneous variation. In the analysis of intervention data, the expected value of the duration to completion of a random …
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Strategy development for object-oriented multiblock grid generation and adaptation to complex geometries
… A grid is adapted by minimization of objective functions, in which relations among weight functions and grid line distribution are formulated. The measures for grid quality, such as smoothness, cell aspect ratio, and orthogonality, are formulated as control terms of the objective functions to …
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On the complexity of energy landscapes: algorithms and a direct test of the Edwards conjecture
… algorithm to tackle problems with fluctuating weight functions. The method is shown to improve accuracy in the computation of the ‘volume’ of high dimensional ‘fluctuating’ basins of attraction and to be able to identify transition states along known reaction coordinates. We argue that the …
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Semiparametric Bayesian Approach using Weighted Dirichlet Process Mixture For Finance Statistical Models
… prior in nonparametric Bayesian literature, and Weighted Dirichlet process mixture (WDPM) can be viewed as extension of DPM which relaxes model distribution assumptions. Meanwhile, WDPM requires to set weight functions and can cause extra computation burden. In this dissertation, we develop more …
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The analytic properties of the triangle and box diagram amplitudes
… forms of the spectral representation, the weight functions and the thresholds are obtained directly for all possible mass configurations involving stable external particles. Then, by starting with a particular normal threshold spectral representation obtained by the method of direct …
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The analytic properties of the triangle and box diagram amplitudes
… forms of the spectral representation, the weight functions and the thresholds are obtained directly for all possible mass configurations involving stable external particles. Then, by starting with a particular normal threshold spectral representation obtained by the method of direct …
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