Knowledge Flow Libros Populares
Knowledge Flow Biografía y Hechos
Weka (Waikato Environment for Knowledge Analysis, en español «entorno para análisis del conocimiento de la Universidad de Waikato») es una plataforma de software para el aprendizaje automático y la minería de datos escrito en Java y desarrollado en la Universidad de Waikato. Weka es software libre distribuido bajo la licencia GNU-GPL. Breve historia En 1993, la Universidad de Waikato de Nueva Zelanda inició el desarrollo de la versión original de Weka (en TCL/TK y C). En 1997, se decidió reescribir el código en Java incluyendo implementaciones de algoritmos de modelado.[1] En 2005, Weka recibe de SIGKDD[2][3] (Special Interest Group on Knowledge Discovery and Data Mining) el galardón "Data Mining and Knowledge Discovery Service". En 2006, Pentaho Corporation adquirió una licencia exclusiva para usar Weka para Inteligencia de negocio (Business Intelligence), dando lugar al componente de minería de datos y análisis predictivo del paquete de software Pentaho Business Intelligence. Descripción El paquete Weka[4] contiene una colección de herramientas de visualización y algoritmos para análisis de datos y modelado predictivo, unidos a una interfaz gráfica de usuario para acceder fácilmente a sus funcionalidades. La versión original de Weka fue un front-end en TCL/TK para modelar algoritmos implementados en otros lenguajes de programación, más unas utilidades para preprocesamiento de datos desarrolladas en C para hacer experimentos de aprendizaje automático. Esta versión original se diseñó inicialmente como herramienta para analizar datos procedentes del dominio de la agricultura,[5][6] pero la versión más reciente basada en Java (WEKA 3), que empezó a desarrollarse en 1997, se utiliza en muchas y muy diferentes áreas, en particular con finalidades docentes y de investigación. Características de Weka Las características de Weka son: Está disponible libremente bajo la licencia pública general de GNU. Es muy portable porque está completamente implementado en Java y puede correr en casi cualquier plataforma. Contiene una extensa colección de técnicas para preprocesamiento de datos y modelado. Es fácil de utilizar por un principiante gracias a su interfaz gráfica de usuario. Weka soporta varias tareas estándar de minería de datos, especialmente, preprocesamiento de datos, clustering, clasificación, regresión, visualización, y selección. Todas las técnicas de Weka se fundamentan en la asunción de que los datos están disponibles en un fichero plano (flat file) o una relación, en la que cada registro de datos está descrito por un número fijo de atributos (normalmente numéricos o nominales, aunque también se soportan otros tipos). Weka también proporciona acceso a bases de datos vía SQL gracias a la conexión JDBC (Java Database Connectivity) y puede procesar el resultado devuelto por una consulta hecha a la base de datos. No puede realizar minería de datos multi-relacional, pero existen aplicaciones que pueden convertir una colección de tablas relacionadas de una base de datos en una única tabla que ya puede ser procesada con Weka.[7] Un área importante que actualmente no cubren los algoritmos incluidos en Weka es el modelado de secuencias. La interfaz de usuario Al ejecutar la aplicación nos aparece el selector de interfaz de Weka (Weka GUI Chooser) que da la opción de seleccionar entre cuatro posibles interfaces de usuario para acceder a las funcionalidades del programa, éstas son Simple CLI, Explorer, Experimenter y Knowledge Flow. Simple CLI Simple CLI es la abreviatura de Simple Command-Line Interface («interfaz simple de línea de comandos»). Se trata de una consola que permite acceder a todas las opciones de Weka desde línea de comandos. Explorer La interfaz Explorer (Explorador) dispone de varios paneles que dan acceso a los componentes principales del banco de trabajo: El panel Preprocess dispone de opciones para importar datos de una base de datos, de un fichero CSV, etc., y para preprocesar estos datos utilizando los denominados algoritmos de filtrado. Estos filtros se pueden utilizar para transformar los datos (por ejemplo convirtiendo datos numéricos en valores discretos) y para eliminar registros o atributos según ciertos criterios previamente especificados. El panel Classify permite al usuario aplicar algoritmos de clasificación estadística y análisis de regresión a los conjuntos de datos resultantes. También permite estimar la exactitud del modelo predictivo resultante, mediante curvas ROC, etc. Finalmente, tiene utilidades para visualizar el propio modelo, en aquellos casos en que esto sea posible, como por ejemplo un árbol de decisión. El panel Associate proporciona acceso a las reglas de asociación aprendidas que intentan identificar todas las interrelaciones importantes entre los atributos de los datos. El panel Cluster da acceso a las técnicas de clustering o agrupamiento de Weka como por ejemplo el algoritmo K-means. Este es sólo una implementación del algoritmo expectación-maximización para aprender una mezcla de distribuciones normales. El panel Selected attributes proporciona algoritmos para identificar los atributos más predictivos en un conjunto de datos. El panel Visualize muestra una matriz de puntos dispersos (scatterplot) donde cada punto individual puede seleccionarse y agrandarse para ser analizados en detalle usando varios operadores de selección. Experimenter La interfaz Experimenter («experimentador») permite la comparación sistemática de una ejecución de los algoritmos predictivos de Weka sobre una colección de conjuntos de datos. Knowledge Flow Knowledge Flow («flujo de conocimiento») es una interfaz que en esencia implementa las mismas funciones que Explorer, y además permite "arrastrar y soltar". También puede ofrecer aprendizaje incremental. Aplicaciones relacionadas KNIME, una plataforma de minería de datos programada en Java. Neural Designer, una herramienta de análisis predictivo basada en técnicas de aprendizaje profundo. RapidMiner, un entorno de minería de datos implementado en Java y que interactúa con Weka. Véase también Portal:Software libre. Contenido relacionado con Free Software Portal Logo.svg. Aprendizaje automático Minería de datos Referencias Enlaces externos Generales Página oficial de Weka en la Universidad de Waikato, Nueva Zelanda Página del proyecto Weka en SourceForge (acquired by Pentaho in September 2006) WekaDoc Wiki de documentación de Weka Página sobre Weka de Cèsar Ferri (UPV - España) Una introducción a Weka (en español) Comparativa de algoritmos de DM implementados - Vía TodoBI Ejemplos de aplicaciones Acronym identification Gene selection from microarray data for cancer classification QSPR of metal complexation Classification of Expressed sequence tag (EST) data from plant/pathogen interface Further related projects and applications Versiones extendidas Weka4WS: a Grid-enabled version of Weka developed at University of Calabria, Italy. Descubre los libros populares de Knowledge Flow. Encuentra los 100 libros más populares de Knowledge Flow
.Best Seller Knowledge Flow Libros de 2024
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Knowledge Flows, Technological Change and Regional Growth in the European Union
Małgorzata Runiewicz-WardynThe book provides conceptual and empirical insights into the complex relationship between knowledge flows and regional growth in the EU. The author critically scrutinizes and enhan...
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Handbook of Mechanical and Materials Engineering
Knowledge flowThis Handbook of Mechanical and Materials Engineering is a complete collection of information for the students are pursuing of BSc. Engineering in mechanical engineering, diploma i...
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Information and Communication Technology
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Economics
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Knowledge Flows in a Global Age
John KrigeA transnational approach to understanding and analyzing knowledge circulation.The contributors to this collection focus on what happens to knowledge and knowhow at national borders...
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Machine Design Engineering
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Biology with Human Physiology
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International Trade Fairs and Inter-Firm Knowledge Flows
Rachael GibsonAgainst a backdrop of economic uncertainty caused by a shift toward protectionism and the COVID19 pandemic among other issues, this book suggests that international trade fairs (IT...
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Obstetrics and Gynaecology
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Knowledge Flows in European Industry
Yannis Caloghirou, Anastasia Constantelou & Nicholas VonortasThe channels and mechanisms of knowledge flows define the links that make up production and innovation systems. As such, they relate directly or indirectly to all policies that aff...
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Gender, Education and Population Flows
Kathrine Bjerg Bennike, Stine Thidemann Faber & Helene Pristed NielsenDuring the Danish Presidency for the Nordic Council of Ministers in 2015, attention was drawn towards challenges and best practice examples in relation to gender, education and pop...
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Pharmacology
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Technology and Knowledge Flow
Guglielmo TrentinThis book outlines how network technology can support, foster and enhance the Knowledge Management, Sharing and Development (KMSD) processes in professional environments through th...
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Top Common Diseases
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Zoology An Introduction
Knowledge flowZoology is the branch of biology that deals with the animal kingdom. It’s the scientific study of everything having to do with animals, same as botany is the scientific study of pl...
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John
George R. Beasley-MurrayA companion series to the acclaimed Word Biblical CommentaryFinding the great themes of the books of the Bible is essential to the study of God's Word and to the preaching and teac...
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Botany The Life of Plants
Knowledge flowBotany is the fundamental of plants life science from seed to a giant tree. It is the branch of biology which study of fruits and flowering plants are all there biochemical process...
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Managing Collaborative R&D Projects
Gabriela Fernandes, Lawrence Dooley, David O'Sullivan & Asbjørn RolstadåsCollaboration among industry, universities and research institutes plays a vital role in stimulating open innovation, which in turn leads to new products, processes, services and b...
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Strategy and Performance of Knowledge Flow
Yu Yu, Yao Chen & Qinfen ShiThis book constructs a model of the knowledge value chain in the university and analyzes the university knowledge valueadded mechanism in the process of IndustryUniversity Collabor...
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When is Regional “Beautiful”?
Bjorn Asheim, Olof Ejermo & Annika RickneThis book focuses on the importance of geography and space in explaining knowledge flows, entrepreneurship and innovation. During the last few decades spatial perspectives have enj...
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Mastering Organizational Knowledge Flow
Frank LeistnerGet your organization's expertise out of its silos and make it flowwith lessons from over a decade of experience Looking at knowledge management in a holistic way, Mastering Organ...
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Entrepreneurship, Human Capital, and Regional Development
Rui Baptista & Joao LeitaoThis book makes original contributions to the literature on clusters, human capital, and regional development by focusing on the link between entrepreneurship and economic growth, ...
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Renewable Energy Engineering
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Mechanical Engineering
Knowledge flowMechanical Engineering is a broad field of engineering that derives design and manufacturing from small individual parts and devices to large systems components and tools. The role...
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Global and Regional Dynamics in Knowledge Flows and Innovation
Chris Van Egeraat, Dieter Kogler & Phil CookeInnovation, which in essence is the generation of knowledge and its subsequent application in the marketplace in the form of novel products and processes, has become the key concep...
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Toxicology
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Vibration and Noise Engineering
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Healing with Nature
Susan S. ScottSusan S. Scott is an experienced psychotherapist who, due to a back injury, was forced to abandon her therapist's couch and walk for therapy. Through her extended strolls through n...
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Time Lived, Without Its Flow
Denise Riley'One of the most eloquent thinkers about our life in language' The Sunday TimesTime Lived, Without Its Flow is a beautiful, unflinching essay on the nature of grief from critically...
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Find Your Flow
Dan DesmarquesAre you searching for true wisdom and knowledge that goes beyond mere intelligence? Look no further than "Find Your Flow: How to Get Wisdom and Knowledge from God." This captivatin...
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Engineering Chemistry
Knowledge flowEngineering Chemistry combine the advanced information of organic chemistry, analytical chemistry, and electrochemistry into the design syllabus. By studying this subject, students...
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Men & Women’s Health Book
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Introduction to Organic Synthesis
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Information Flow and Knowledge Sharing (Enhanced Edition)
Flavio Soares Correa da Silva, Jaume Agusti-Cullell & Mary E. JamesExcept from the ForewordThe stated aim of the book series "Capturing Intelligence" is to publish books on research from all disciplines dealing with and affecting the issue of unde...
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Engineering Chemistry
Knowledge flowEngineering Chemistry combine the advanced information of organic chemistry, analytical chemistry, and electrochemistry into the design syllabus. By studying this subject, students...
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Short Tricks of Math
knoweldgeflowThe book of Short Tricks of Math is prepared for those who want to learn interesting mathematical techniques to boost up the calculating method. These Short ticks of Math provide y...
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Basics of Pathology
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IKTeroak: flujo de pensamiento y conocimiento para la formación continua en TIC de la comunidad educativa = IKTeroak: thought and knowledge flow for further education in ICT for the educational community
José Miguel Correa Gorospe, Margarita León Guereño & Estibaliz Jiménez de Aberasturi ApraizSe ha escrito bastante sobre los profesores innovadores; profesores que se mantienen a la vanguardia del panorama en tecnología educativa y/o que son abanderados de la innovación p...
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Right Brain Learning In 30 Days
Keith Harary, Ph.D. & Pamela WeintraubRightbrain learning rallies the powers of your intuitive and nonverbal right brain to help you better absorb all kinds of new information in your personal and professional life. Op...
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Database Management System
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Business Studies
Knowledge flowWhen you are choosing on a course of study, headed to school or university Business Studies book provides you an essential overview of the subjects which outline the base of a busi...
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Python Programming
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Engineering Mechanics
Knowledge flowEngineering Mechanics is the field of science that deals with the action of objects either static or dynamic, under the control of forces. Engineering mechanics engages the applica...
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Basics of Physics
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C Programmin Language
Knowledge flowC is a powerful general purpose programming language that is essential for beginners to learn. This book will presents you to basics programming and software development using C la...
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Globalized Knowledge Flows and Chinese Social Theory
Xiaoying QiThis book considers the nature and possibilities of conceptual change and transformation under conditions of globalization, especially with regard to Chinese social and cultural co...
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C++ Programming Language
Knowledge flowC++ Programming is an objectoriented programming language, generally compiled and transitional middlelevel programming language was developed by Bjarne Stroustrup in 1979. In simpl...
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Learn Accounting
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Digital Electronics
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Knowledge is Beautiful
David McCandlessIn this mindblowing followup to the bestselling Information is Beautiful, the king of infographics David McCandless uses spectacular visuals to reveal unexpected insights into how ...