Miner A De Texto Con R
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Miner A De Texto Con R
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Author : GIL PASCUAL Juan Antonio
language : es
Publisher: Editorial UNED
Release Date : 2021-09-20
Miner A De Texto Con R written by GIL PASCUAL Juan Antonio and has been published by Editorial UNED this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-09-20 with Mathematics categories.
En el contexto de la sociedad actual de la información los datos no estructurados toman especial relevancia. El extraer información relevante de opiniones volcadas en páginas web resulta de encuestas a usuarios de hoteles, restaurantes, centros comerciales, centros docentes, etc. Influyen de forma decisiva en las orientaciones comerciales de los mismos. En suma, aquellos registros de información textual donde el tratamiento de los mismos de forma manual resulta en cierta forma inabordable necesitan de una herramienta de ayuda. Para conseguir ese fin existe un conjunto de paquetes del programa informático-estadístico R que dan solución global a las necesidades de captar y tratar la información relevante obtenida. Por tanto, la minería de textos con R tiene como objetivo general facilitar la extracción y tratamiento de información textual para la investigación, siendo herramientas estadísticas de minería de datos las que completan el proceso. El texto que se presenta aborda, con la ayuda del programa R, en seis temas las tareas fundamentales del proceso de extracción y tratamiento de datos textuales. En primer lugar, se fijan los conceptos básicos en minería textual con R; después se habla de procesos primarios con los textos. Con estos dos capítulos se tienen los rudimentos básicos para cualquier tratamiento posterior del texto. En el capítulo tres se habla de las técnicas descriptivas de minería textual y en el capítulo cuatro de las técnicas explicativas. Finalmente los temas cinco y seis están dedicados a detallar ejemplos prácticos de aplicaciones de minería textual en: análisis de opiniones, análisis de estilo, pruebas y exámenes automatizados o parametrizados, tratamiento de información de twitter, análisis de redes sociales y extracción de información de la web (web scraping). No se ha pretendido ser exhaustivo en las aplicaciones de minería textual por limitaciones de espacio, simplemente se ha puesto las que se piensa son más utilizadas. La visión del texto es eminentemente práctica, con múltiples códigos para resolver los numerosos ejemplos lo que facilita una posterior aplicación en contextos personales del lector. Para su comprensión se supone un conocimiento elemental de R y cierta familiaridad con términos estadísticos básicos.
Estad Stica Aplicada Avanzada Con R
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Author : GARCÍA PÉREZ, Alfonso
language : es
Publisher: Editorial UNED
Release Date : 2022-09-15
Estad Stica Aplicada Avanzada Con R written by GARCÍA PÉREZ, Alfonso and has been published by Editorial UNED this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-09-15 with Mathematics categories.
En este texto se estudian Métodos Avanzados de Estadística Aplicada y, dado que este tipo de técnicas no se puede utilizar en casos reales sin algún software estadístico, el estudio se acompaña en el libro de su aplicación con R, el paquete estadístico mejor y más potente, además de gratuito. Se incluyen, además, numerosos ejemplos prácticos, la mayoría de ellos con datos reales, además de nonfiction problems, es decir, ejercicios que podrían llegar a ser reales.
Mining Metallurgy Economic Geology And Applied Chemistry
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Author :
language : en
Publisher:
Release Date : 1917
Mining Metallurgy Economic Geology And Applied Chemistry written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1917 with Chemistry, Technical categories.
Section Vii Mining Metallurgy Economic Geology And Applied Chemistry Hennen Jennings Chairman
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Author :
language : en
Publisher:
Release Date : 1917
Section Vii Mining Metallurgy Economic Geology And Applied Chemistry Hennen Jennings Chairman written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1917 with Science categories.
Proceedings Of The Second Pan American Scientific Congress Section Vii Mining Metallurgy Economic Geology And Applied Chemistry Hennen Jennings Chairman
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Author :
language : en
Publisher:
Release Date : 1917
Proceedings Of The Second Pan American Scientific Congress Section Vii Mining Metallurgy Economic Geology And Applied Chemistry Hennen Jennings Chairman written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1917 with Anthropology categories.
Geology Of Cuba
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Author : Manuel Enrique Pardo Echarte
language : en
Publisher: Springer Nature
Release Date : 2021-05-04
Geology Of Cuba written by Manuel Enrique Pardo Echarte and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-05-04 with Science categories.
The evolution of geological cartography in Cuba in its more than 135 years of history has been possible through the consultation of numerous archival reports, publications, maps and personal interviews with different authors and geologists of vast experience. A brief critical analysis is made of the increase in the degree of geological knowledge of the country since the elaboration of the Geological Sketch of the Cuban Island at a scale of 1: 2 000 000 (Fernández de Castro, 1883), first of Cuba and of Ibero-America, until the most recent Digital Geological Map of Cuba at scale 1: 100 000 (Pérez Aragón, 2016). Cuba and its surroundings are a geological mosaic in the southeast corner of the North American plate with rocks from many different origins, from Proterozoic to Quaternary, extended along the southern border of the plate. From the Eocene, this belt has been dissected by several great faults, related to the development of some great oceanic depressions (Cayman trough and Yucatan basin). The fossil record of Cuba, which covers approximately the last 200 million years of life on Earth, is rich in very varied fossils, witnessing a wide diversity of organisms, both animals and plants, that inhabited the Antillean and Caribbean region; and that constitute the inheritance of the biological diversity that the current Cuban archipelago exhibits. As a result of the preparation of the Cuban Metallogenic Map at scale 1: 250 000, forty-one models and eight sub-models of metallic mineral deposits were identified. These models, of descriptive–genetic type, together with the analysis of their spatial distribution and their relationship with geology, allowed the identification and mapping of ten mineral systems, linked to the geodynamic environments present in the Cuban territory. Cuba has large deposits of limestone, loam, dolomite, kaolin, gypsum and anhydrite, rock salt, marbles, sands and clays of different types, zeolites, peat, therapeutic peloids and many more. There are manifestations of decorative and precious rocks such as jasper, jadeite, different varieties of quartz and even xylopals. A compilation of geochemical data of oceanic basalt samples from previous works, together with data of analyzed samples during this study in order to discuss geochemical criteria based on immobile element (proxies for fractionation indices, alkalinity, mantle flow and subduction addition), provide a comprehensive ophiolite classification according to their tectonic setting. This book addresses different facets of the geological knowledge of Cuba: history of its cartography, marine geology, fossil record, stratigraphy, tectonics, classification of its ophiolites, quaternary deposits, metallogeny and minerageny.
Quantitative Semantics And Soft Computing Methods For The Web Perspectives And Applications
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Author : Brena, Ramon F.
language : en
Publisher: IGI Global
Release Date : 2011-10-31
Quantitative Semantics And Soft Computing Methods For The Web Perspectives And Applications written by Brena, Ramon F. and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-10-31 with Computers categories.
The Internet has been acknowledged as a recent technological revolution, due to its significant impact on society as a whole. Nevertheless, precisely due to its impact, limitations of the current Internet are becoming apparent; in particular, its inability to automatically take into account the meaning of online documents. Some proposals for taking meaning into account began to appear, mainly the so-called Semantic Web, which includes a set of technologies like RDF that are based on new markup languages. Though these technologies could be technically sound, practical limitations, such as the high training level required to construct Semantic Web pages, and the small proportion of current Semantic Web pages make the Sematic Web marginal today and also in the near foreseeable future. Quantitative Semantics and Soft Computing Methods for the Web: Perspectives and Applications will provide relevant theoretical frameworks and the latest empirical research findings related to quantitative, soft-computing and approximate methods for dealing with Internet semantics. The target audience of this book is composed of professionals and researchers working in the fields of information and knowledge related technologies (e.g. Information sciences and technology, computer science, Web science, and artificial intelligence).
Proceedings Of The Second Pan American Scientific Congress
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Author :
language : en
Publisher:
Release Date : 1917
Proceedings Of The Second Pan American Scientific Congress written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1917 with categories.
Governing Global Land Deals
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Author : Wendy Wolford
language : en
Publisher: John Wiley & Sons
Release Date : 2013-09-30
Governing Global Land Deals written by Wendy Wolford and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09-30 with Political Science categories.
This collection of essays in Governing Global Land Deals provides new empirical and theoretical analyses of the relationships between global land grabs and processes of government and governance. Reframes debates on global land grabs by focusing on the relationship between large-scale land deals and processes of governance Offers new theoretical insights into the different forms and effects of global land acquisitions Illuminates both the micro-processes of transaction and expropriation, as well as the broader structural forces at play in global land deals Provides new empirical data on the different actors involved in contemporary land deals occurring across the globe and focuses on the specific institutional, political, and economic contexts in which they are acting
Conceptual Structures For Knowledge Creation And Communication
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Author : Aldo de Moor
language : en
Publisher: Springer Science & Business Media
Release Date : 2003-07-09
Conceptual Structures For Knowledge Creation And Communication written by Aldo de Moor and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-07-09 with Computers categories.
The book constitutes the refereed proceedings of the 11th International Conference on Conceptual Structures, ICCS 2003, held in Dresden, Germany in July 2003. The 23 revised full papers presented together with 5 invited papers were carefully reviewed and selected for presentation. The papers are organized in topical sections on the many facets of conceptual structures, logical and linguistic aspects, conceptual representation of time and space, deepening the formal theory and applications of conceptual structures.