Listing 1 - 10 of 44 | << page >> |
Sort by
|
Choose an application
This book is open access under a CC BY 4.0 license This open access book brings together the latest genome base prediction models currently being used by statisticians, breeders and data scientists. It provides an accessible way to understand the theory behind each statistical learning tool, the required pre-processing, the basics of model building, how to train statistical learning methods, the basic R scripts needed to implement each statistical learning tool, and the output of each tool. To do so, for each tool the book provides background theory, some elements of the R statistical software for its implementation, the conceptual underpinnings, and at least two illustrative examples with data from real-world genomic selection experiments. Lastly, worked-out examples help readers check their own comprehension. The book will greatly appeal to readers in plant (and animal) breeding, geneticists and statisticians, as it provides in a very accessible way the necessary theory, the appropriate R code, and illustrative examples for a complete understanding of each statistical learning tool. In addition, it weighs the advantages and disadvantages of each tool.
Agricultural science --- Life sciences: general issues --- Botany & plant sciences --- Animal reproduction --- Probability & statistics --- open access --- Statistical learning --- Bayesian regression --- Deep learning --- Non linear regression --- Plant breeding --- Crop management --- multi-trait multi-environments models
Choose an application
"Even though there is a growing interest in predictive policing, to date there have been few, if any, formal evaluations of these programs. This report documents an assessment of a predictive policing effort in Shreveport, Louisiana, in 2012, which was conducted to evaluate the crime reduction effects of policing guided by statistical predictions. RAND researchers led multiple interviews and focus groups with the Shreveport Police Department throughout the course of the trial to document the implementation of the statistical predictive and prevention models. In addition to a basic assessment of the process, the report shows the crime impacts and costs directly attributable to the strategy. It is hoped that this will provide a fuller picture for police departments considering if and how a predictive policing strategy should be adopted. There was no statistically significant change in property crime in the experimental districts that applied the predictive models compared with the control districts; therefore, overall, the intervention was deemed to have no effect. There are both statistical and substantive possibilities to explain this null effect. In addition, it is likely that the predictive policing program did not cost any more than the status quo."--"Abstract" on web page.
Crime prevention --- Offenses against property --- Law enforcement --- Police administration --- Regression analysis --- Forecasting --- Social prediction --- Social Welfare & Social Work --- Social Sciences --- Criminology, Penology & Juvenile Delinquency --- Prevention --- Statistical methods --- Prediction, Social --- Social forecasting --- Sociological prediction --- Forecasts --- Futurology --- Prediction --- Analysis, Regression --- Linear regression --- Regression modeling --- Police --- Police management --- Enforcement of law --- Crimes against property --- Crime --- Prevention of crime --- Administration --- Management --- Government policy --- Sociology --- Social indicators --- Multivariate analysis --- Structural equation modeling --- Criminal justice, Administration of --- Public safety --- Policing
Choose an application
Los objetivos centrales de este trabajo son dos: 1. Establecer un conjunto de principios que nos permitan traducir a modelos matemáticos las proposiciones teoricas que originan variables cualitativas. 2. Analizar los problemas de ajuste que se encuentran involucrados en su estimación
Politics and government. --- Ruiz Cortines, Adolfo, --- Mexico. --- Mexico --- Política y gobierno --- Politics and government --- Anáhuac --- Estados Unidos Mexicanos --- Maxico --- Méjico --- Mekishiko --- Meḳsiḳe --- Meksiko --- Meksyk --- Messico --- Mexique (Country) --- República Mexicana --- Stany Zjednoczone Meksyku --- United Mexican States --- United States of Mexico --- מקסיקו --- メキシコ --- Regression analysis. --- Social sciences --- Statistical methods. --- Analysis, Regression --- Linear regression --- Regression modeling --- Multivariate analysis --- Structural equation modeling --- Sociology
Choose an application
This open access book offers an introduction to mixed generalized linear models with applications to the biological sciences, basically approached from an applications perspective, without neglecting the rigor of the theory. For this reason, the theory that supports each of the studied methods is addressed and later - through examples - its application is illustrated. In addition, some of the assumptions and shortcomings of linear statistical models in general are also discussed. An alternative to analyse non-normal distributed response variables is the use of generalized linear models (GLM) to describe the response data with an exponential family distribution that perfectly fits the real response. Extending this idea to models with random effects allows the use of Generalized Linear Mixed Models (GLMMs). The use of these complex models was not computationally feasible until the recent past, when computational advances and improvements to statistical analysis programs allowed users to easily, quickly, and accurately apply GLMM to data sets. GLMMs have attracted considerable attention in recent years. The word "Generalized" refers to non-normal distributions for the response variable and the word "Mixed" refers to random effects, in addition to the fixed effects typical of analysis of variance (or regression). With the development of modern statistical packages such as Statistical Analysis System (SAS), R, ASReml, among others, a wide variety of statistical analyzes are available to a wider audience. However, to be able to handle and master more sophisticated models requires proper training and great responsibility on the part of the practitioner to understand how these advanced tools work. GMLM is an analysis methodology used in agriculture and biology that can accommodate complex correlation structures and types of response variables.
Biometry. --- Multivariate analysis. --- Regression analysis. --- Agriculture. --- Biostatistics. --- Multivariate Analysis. --- Linear Models and Regression. --- Farming --- Husbandry --- Industrial arts --- Life sciences --- Food supply --- Land use, Rural --- Analysis, Regression --- Linear regression --- Regression modeling --- Multivariate analysis --- Structural equation modeling --- Multivariate distributions --- Multivariate statistical analysis --- Statistical analysis, Multivariate --- Analysis of variance --- Mathematical statistics --- Matrices --- Biological statistics --- Biology --- Biometrics (Biology) --- Biostatistics --- Biomathematics --- Statistics --- Statistical methods --- Generalized Linear Mixed Models --- non normal distribution --- GLM --- GLMM --- Model Inference --- non normal response
Choose an application
This book is a comprehensive set of articles reflecting on the application of symbolic and/or numerical computation in a range of scientific areas within the fields of engineering and science. These articles constitute extended versions of communications presented at the 4th International Conference on Numerical and Symbolic Computation—SYMCOMP 2019—that took place in Porto, Portugal, from 11 to 12 April 2019 The different chapters present diverse perspectives on the existing effective connections between mathematical methods and procedures and other knowledge areas. The intrinsic multidisciplinary character is visible throughout the whole book as a result of the applicability of the scope and the applications considered. The reader will find this book to be a useful resource for identifying problems of interest in different engineering and science areas, and in the development of mathematical models and procedures used in the context of prediction or verification computational tools as well as in the aided-learning/teaching context. This book is a must-read for anyone interested in the recent developments and applications of symbolic and numerical computation for a number of multidisciplinary engineering and science problems.
symbolic computation --- dynamic and interactive tool --- socio-economic sciences --- F-Tool concept --- PES(Linear)-Tool --- Wolfram Mathematica --- computable document format --- invariant functions --- contractions of algebras --- Lie algebras --- Malcev algebras --- Heisenberg algebras --- Tau method --- nonholonomic systems --- eigenvalue differential problems --- spectral methods --- Sturm–Liouville problems --- marketing innovation --- CIS 2014 --- multiple linear regression --- discriminant analysis --- numerical algorithms --- optimal control --- HIV/AIDS model --- GNU Octave --- open source code for optimal control through Pontryagin Maximum Principle --- Darcy --- Brinkman --- incompressible --- isogeometric analysis --- shear stress --- interstitial flow --- cancer --- NURBS --- n/a --- Sturm-Liouville problems
Choose an application
Over the past few decades, global warming and climate change have impacted the hydrologic cycle. Many models have been developed to simulate hydrologic processes. Obtaining accurate climatic data on local/meso, and global scales is essential for the realistic simulation of hydrologic processes. However, the limited availability of climatic data often poses a challenge to hydrologic modeling efforts. Hydrologic science is currently undergoing a revolution in which the field is being transformed by the multitude of newly available data streams. Historically, hydrologic models that have been developed to answer basic questions about the rainfall–runoff relationship, surface water, and groundwater storage/fluxes, land–atmosphere interactions, have been optimized for previously data-limited conditions. With the advent of remote sensing technologies and increased computational resources, the environment for water cycle researchers has fundamentally changed to one where there is now a flood of spatially distributed and time-dependent data. The bias in the climatic data is propagated through models and can yield estimation errors. Therefore, the bias in climatic data should be removed before their use in hydrologic models. Climatic data have been a core component of the science of hydrology. Their intrinsic role in understanding and managing water resources and developing sound water policies dictates their vital importance. This book aims to present recent advances concerning climatic data and their applications in hydrologic models.
statistical weather generator --- stochastic process --- Diyala River basin --- Wilks’ technique --- hydrological models --- rainfall --- surface runoff --- linear regression models --- curve number --- SCS.CN model --- mulching --- wildfire --- prescribed fire --- n/a --- CHIRPS --- GPM-IMERG --- rainfall data scarcity --- agro-hydrology --- Rift Valley Lake Basin --- hydrological research basin --- precipitation --- temperature --- long-term trends --- climate change --- evapotranspiration --- groundwater recharge --- thresholds --- seasonality --- spatiotemporal variations --- regional-scale --- long-term --- HydroBudget model --- cold and humid climates --- Quebec (Canada) --- tank cascade system --- dry zone --- water governance --- flood control --- traditional knowledge --- community participation --- Sri Lanka --- Wilks' technique
Choose an application
Wind diesel power systems (WDPSs) are isolated microgrids that combine diesel generators (DGs) with wind turbine generators (WTGs). Often, WDPS are the result of adding WTGs to a previous existing diesel power plant located in a remote place where there is an available wind resource. By means of power supplied by WTGs, fuel consumption and CO2 emissions are reduced. WDPSs are isolated power systems with low inertia where important system frequency and voltage variations occur. WDPS dynamic modeling and simulation allows short-term simulations to be carried out to obtain detailed electrical variable transients so that WDPS stability and power quality can be tested. This book includes papers on several subjects regarding WDPSs: the main topic of interest is WDPS dynamic modeling and simulation, but related areas such as the sizing of the different WDPS components, studies concerning the control of WDPSs or the use of energy storage systems (ESSs) in WDPSs and the benefits that ESSs provide to WDPS are also discussed. The book also deals with related AC isolated microgrids, such as wind-hydro microgrids or wind-photovoltaic-diesel microgrids.
diesel generator --- wind turbine generator --- isolated microgrid --- flywheel energy storage --- dump load --- power systems simulation --- power systems control --- frequency control --- isolated system --- linear regression --- power system stability --- wind turbines --- hydro turbine generator --- isolated microgrids --- power system simulation --- power quality --- Isla de la Juventud --- electrical power system --- renewable energy --- long-term planning --- LINDA model --- design methodology --- WDPS --- microgrid --- small wind turbine --- wind data sources --- HOMER Pro --- wind energy --- hybrid systems --- harsh climatic --- pitch-control --- intelligent control system --- icing prediction --- predictive analytics --- adapted technologies --- n/a
Choose an application
This reprint presents various aspects of the future grid, which is the next generation of the electrical grid and will enable the smart integration of conventional, renewable, and distributed power generation, energy storage, transmission and distribution, and demand management. Renewable energy is crucial in transitioning to a less carbon-intensive economy and a more sustainable energy system. The high penetration and uncertain power outputs of renewable energy pose great challenges to the stable operation of energy systems. The deployment of the smart grid is revolutionary, and also imperative around the world. It involves and deals with multidisciplinary fields such as energy sources, control systems, communications, computational generation, transmission, distribution, customer operations, markets, and service providers. Smart grids are emerging in both developed and developing countries, with the aim of achieving a reliable and secure electricity supply. Smart grids will eventually require standards, policy, and a regulatory framework for successful implementation. This reprint addresses the emerging and advanced green energy technologies for a sustainable and resilient future grid, and provides a platform to enhance interdisciplinary research and share the most recent ideas.
Technology: general issues --- History of engineering & technology --- islanded mode --- microgrid --- decentralized control --- robust tracking --- invariant set --- thermal energy storage --- parabolic dish --- latent heat --- phase change material --- heat transfer fluid --- bio-inspired algorithms --- wireless sensor network --- genetic algorithm --- particle swarm optimization --- advanced metering infrastructure --- blockchain --- Ethereum --- isolated DC–DC converter --- photovoltaics --- LLC resonant converter --- dual-bridge --- wide voltage range --- power optimizer --- coordinated control --- vehicle-to-grid --- primary frequency control --- secondary frequency control --- state of charge --- decentralized --- Simulink model --- dimensionality reduction --- simple linear regression --- multiple linear regression --- polynomial regression --- load forecasting --- VSC (voltage source converter) --- PLL (Phase-Locked Loop) --- weak grid --- small signal stability --- eigenvalues --- demand-side management --- low-power consumer electronic appliances --- low-voltage distribution system --- non-intrusive identification of appliance usage patterns --- power quality --- smart home --- true power factor --- total harmonic distortion --- renewable energy sources --- energy management system --- communication technologies --- microgrid standards --- third-order sliding mode control --- asynchronous generators --- variable speed dual-rotor wind turbine --- direct field-oriented control --- integral-proportional --- transformer --- internal fault currents --- magnetic inrush currents --- extended Kalman filter (EKF) algorithm --- harmonic estimation --- DC microgrid --- fault --- cluster --- DC/DC converter --- fault current limiter (FCL) --- multi-objective --- renewable energy --- profit-based scheduling --- Equilibrium Optimizer --- smart grid --- campus microgrid --- batteries --- prosumer market --- distributed generation --- renewable energy resources --- energy storage system --- distributed energy resources --- demand response --- load clustering techniques --- sizing methodologies --- digital signal processing --- green buildings --- spectral analysis --- spectral kurtosis --- life-cycle cost --- optimal scheduling --- reinforcement learning --- enabling technologies --- energy community --- smart meter --- nanogrid --- platform --- power cloud --- n/a --- isolated DC-DC converter
Choose an application
The present Special Issue collects a number of new contributions both at the theoretical level and in terms of applications in the areas of nonparametric and semiparametric econometric methods. In particular, this collection of papers that cover areas such as developments in local smoothing techniques, splines, series estimators, and wavelets will add to the existing rich literature on these subjects and enhance our ability to use data to test economic hypotheses in a variety of fields, such as financial economics, microeconomics, macroeconomics, labor economics, and economic growth, to name a few.
discrete duration models --- volatility feedback effect --- semiparametric estimation --- nonparametric method --- GLS detrending --- functional coefficients --- purified implied volatility --- country competitiveness index --- nonparametric frontiers --- efficiency --- materials balance condition --- panel data --- Dirichlet process prior --- classification --- indicators --- Kendall’s tau --- realised volatility --- Malmquist productivity index --- conditional dependence index --- wavelet --- dependent Bayesian nonparametrics --- TFP growth --- Solow economic growth convergence model --- unit root testing --- nonparametric 2SLS estimator --- random forests --- competitiveness --- slice sampling --- integrated difference kernel estimator --- maximum score estimator --- heterogeneous autoregressive model --- generalized additive models --- Monte Carlo --- tensor products --- cubic spline penalty --- M-estimation --- nonparametric copula --- leverage effect --- conditional quantile function --- emissions --- efficient semiparamteric estimation --- DEA --- tail dependence index --- difference kernel estimator --- nonparametric threshold regression --- machine learning --- factors --- local linear regression --- European Union --- financial development --- series estimator --- production efficiency
Choose an application
This book focuses on fundamental and applied research on geo-information technology, notably optical and radar remote sensing and algorithm improvements, and their applications in environmental monitoring. This Special Issue presents ten high-quality research papers covering up-to-date research in land cover change and desertification analyses, geo-disaster risk and damage evaluation, mining area restoration assessments, the improvement and development of algorithms, and coastal environmental monitoring and object targeting. The purpose of this Special Issue is to promote exchanges, communications and share the research outcomes of scientists worldwide and to bridge the gap between scientific research and its applications for advancing and improving society.
Research & information: general --- earthquake --- damaged groups of buildings --- classification --- remote sensing images --- Convolution Neural Network (CNN) --- block vector data --- shoreline change --- landsat --- planet scope --- coastline --- morphological changes --- building extraction --- improved anchor-free instance segmentation --- high-resolution remote sensing images --- deep learning --- land use/land cover (LULC) --- GF-6 WFV --- object-oriented --- change detection --- double constraints --- REE mines --- mining and restoration assessment indicators (MRAIs) --- damage --- time trajectory --- effectiveness of management --- aeolian process --- desertification --- multi-sensor fusion --- interferometric SAR --- time-series analysis --- mussel farming --- high-resolution image --- transitional water management --- environmental pollution --- open source software --- synthetic aperture radar (SAR) --- target --- sea surface --- multiple scattering --- geo-hazard mapping --- Gaofen-1 satellite --- land cover --- environmental factors --- susceptibility --- post-classification differencing --- generalized difference vegetation index (GDVI) --- multiple linear regression --- logistic regression --- n/a
Listing 1 - 10 of 44 | << page >> |
Sort by
|