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Books > Computing & IT > Computer software packages > Other software packages

Practical R 4 - Applying R to Data Manipulation, Processing and Integration (Paperback, 1st ed.): Jon Westfall Practical R 4 - Applying R to Data Manipulation, Processing and Integration (Paperback, 1st ed.)
Jon Westfall
R1,322 R1,101 Discovery Miles 11 010 Save R221 (17%) Ships in 18 - 22 working days

Get started with an accelerated introduction to the R ecosystem, programming language, and tools including R script and RStudio. Utilizing many examples and projects, this book teaches you how to get data into R and how to work with that data using R. Once grounded in the fundamentals, the rest of Practical R 4 dives into specific projects and examples starting with running and analyzing a survey using R and LimeSurvey. Next, you'll carry out advanced statistical analysis using R and MouselabWeb. Then, you'll see how R can work for you without statistics, including how R can be used to automate data formatting, manipulation, reporting, and custom functions. The final part of this book discusses using R on a server; you'll build a script with R that can run an RStudio Server and monitor a report source for changes to alert the user when something has changed. This project includes both regular email alerting and push notification. And, finally, you'll use R to create a customized daily rundown report of a person's most important information such as a weather report, daily calendar, to-do's and more. This demonstrates how to automate such a process so that every morning, the user navigates to the same web page and gets the updated report. What You Will Learn Set up and run an R script, including installation on a new machine and downloading and configuring R Turn any machine into a powerful data analytics platform accessible from anywhere with RStudio Server Write basic R scripts and modify existing scripts to suit your own needs Create basic HTML reports in R, inserting information as needed Build a basic R package and distribute it Who This Book Is For Some prior exposure to statistics, programming, and maybe SAS is recommended but not required.

R Markdown - The Definitive Guide (Paperback): Yihui Xie, Garrett Grolemund, J.J. Allaire R Markdown - The Definitive Guide (Paperback)
Yihui Xie, Garrett Grolemund, J.J. Allaire
R1,150 Discovery Miles 11 500 Ships in 9 - 17 working days

R Markdown: The Definitive Guide is the first official book authored by the core R Markdown developers that provides a comprehensive and accurate reference to the R Markdown ecosystem. With R Markdown, you can easily create reproducible data analysis reports, presentations, dashboards, interactive applications, books, dissertations, websites, and journal articles, while enjoying the simplicity of Markdown and the great power of R and other languages. In this book, you will learn Basics: Syntax of Markdown and R code chunks, how to generate figures and tables, and how to use other computing languages Built-in output formats of R Markdown: PDF/HTML/Word/RTF/Markdown documents and ioslides/Slidy/Beamer/PowerPoint presentations Extensions and applications: Dashboards, Tufte handouts, xaringan/reveal.js presentations, websites, books, journal articles, and interactive tutorials Advanced topics: Parameterized reports, HTML widgets, document templates, custom output formats, and Shiny documents. Yihui Xie is a software engineer at RStudio. He has authored and co-authored several R packages, including knitr, rmarkdown, bookdown, blogdown, shiny, xaringan, and animation. He has published three other books, Dynamic Documents with R and knitr, bookdown: Authoring Books and Technical Documents with R Markdown, and blogdown: Creating Websites with R Markdown. J.J. Allaire is the founder of RStudio and the creator of the RStudio IDE. He is an author of several packages in the R Markdown ecosystem including rmarkdown, flexdashboard, learnr, and radix. Garrett Grolemund is the co-author of R for Data Science and author of Hands-On Programming with R. He wrote the lubridate R package and works for RStudio as an advocate who trains engineers to do data science with R and the Tidyverse.

Presenting Your Data with SPSS Explained (Hardcover): Perry R. Hinton, Isabella McMurray Presenting Your Data with SPSS Explained (Hardcover)
Perry R. Hinton, Isabella McMurray
R5,079 Discovery Miles 50 790 Ships in 10 - 15 working days

Data Presentation with SPSS Explained provides students with all the information they need to conduct small scale analysis of research projects using SPSS and present their results appropriately in their reports. Quantitative data can be collected in the form of a questionnaire, survey or experimental study. This book focuses on presenting this data clearly, in the form of tables and graphs, along with creating basic summary statistics. Data Presentation with SPSS Explained uses an example survey that is clearly explained step-by-step throughout the book. This allows readers to follow the procedures, and easily apply each step in the process to their own research and findings. No prior knowledge of statistics or SPSS is assumed, and everything in the book is carefully explained in a helpful and user-friendly way using worked examples. This book is the perfect companion for students from a range of disciplines including psychology, business, communication, education, health, humanities, marketing and nursing - many of whom are unaware that this extremely helpful program is available at their institution for their use.

Advanced R Solutions (Paperback): Malte Grosser, Henning Bumann, Hadley Wickham Advanced R Solutions (Paperback)
Malte Grosser, Henning Bumann, Hadley Wickham
R1,416 Discovery Miles 14 160 Ships in 10 - 15 working days

*When R creates copies, and how it affects memory usage and code performance *Everything you could ever want to know about functions *The differences between calling and exiting handlers *How to employ functional programming to solve modular tasks *The motivation, mechanics, usage, and limitations of R's highly pragmatic S3 OO system *The R6 OO system, which is more like OO programming in other languages *The rules that R uses to parse and evaluate expressions *How to use metaprogramming to generate HTML or LaTeX with elegant R code *How to identify and resolve performance bottlenecks

Integrierte Informationssysteme in Handelsunternehmen Auf Der Basis Von Sap-Systemen (German, Hardcover, 2000 ed.): Joerg Becker Integrierte Informationssysteme in Handelsunternehmen Auf Der Basis Von Sap-Systemen (German, Hardcover, 2000 ed.)
Joerg Becker; Contributions by L. Ehlers, E. Kosilek; Wolfgang Uhr; Contributions by S. Neumann; …
R1,539 Discovery Miles 15 390 Ships in 18 - 22 working days

Konzentrationstendenzen, Globalisierung und gut informierte Kunden sind Belege f r den harten Wettbewerb, in dem sich Handelsunternehmen befinden. Um in diesem Wettbewerb zu bestehen, ben tigen H ndler flexibel an die jeweilige Unternehmensstruktur anpassbare Informations- und Kommunikationssysteme, die die operativen Abl ufe, Beschaffung, Lagerung und Distribution und die betriebswirtschaftlich-administrativen Aufgaben der Buchhaltung, Kostenrechnung und Personalwirtschaft unterst tzen und aussagekr ftige Auswertungssysteme umfassen. Dar ber hinaus sind Informations- und Planungssysteme zur Unterst tzung von Marketing und Management heute kritischer Erfolgsfaktor. Das Buch stellt die Architektur von Handelsinformationssystemen am Beispiel des SAP Retail-Systems dar. Es zeigt auf, wie modernes Handelsmanagement durch Einsatz integrierter Standardsoftware realisiert werden kann.

C++ for Mathematicians - An Introduction for Students and Professionals (Paperback): Edward Scheinerman C++ for Mathematicians - An Introduction for Students and Professionals (Paperback)
Edward Scheinerman
R2,832 Discovery Miles 28 320 Ships in 10 - 15 working days

For problems that require extensive computation, a C++ program can race through billions of examples faster than most other computing choices. C++ enables mathematicians of virtually any discipline to create programs to meet their needs quickly, and is available on most computer systems at no cost. C++ for Mathematicians: An Introduction for Students and Professionals accentuates C++ concepts that are most valuable for pure and applied mathematical research. This is the first book available on C++ programming that is written specifically for a mathematical audience; it omits the language's more obscure features in favor of the aspects of greatest utility for mathematical work. The author explains how to use C++ to formulate conjectures, create images and diagrams, verify proofs, build mathematical structures, and explore myriad examples. Emphasizing the essential role of practice as part of the learning process, the book is ideally designed for undergraduate coursework as well as self-study. Each chapter provides many problems and solutions which complement the text and enable you to learn quickly how to apply them to your own problems. Accompanying downloadable resources provide all numbered programs so that readers can easily use or adapt the code as needed. Presenting clear explanations and examples from the world of mathematics that develop concepts from the ground up, C++ for Mathematicians can be used again and again as a resource for applying C++ to problems that range from the basic to the complex.

Handbuch Zum Internetrecht - Electronic Commerce - Informations-, Kommunikations- Und Mediendienste (German, Hardcover, 2nd 2.,... Handbuch Zum Internetrecht - Electronic Commerce - Informations-, Kommunikations- Und Mediendienste (German, Hardcover, 2nd 2., Aktualisierte U. Erw. Aufl. 2002 ed.)
Detlef Kroeger, Marc A Gimmy
R4,223 Discovery Miles 42 230 Ships in 18 - 22 working days

Anwendbarkeit des Mediendienstestaatsvertrages oder handelt es sich um Rund funk mit der Folge der Anwendung der Rundfunkgesetzes der Lander? Der zweite Abschnitt behandelt den "Rechtsverkehr im Internet'. Zunachst wird in Kapitel 3 der "Vertragsschluss im Internet" nach deutschem Recht erfasst. In Kapitel 15 ("Electronic Commerce im Internet") und 16 ("Rechtsfragen des In ternet-Vertriebs von Versicherungsdienstleistungen" werden die europaischen Re gelungen - insbesondere aus der Sicht des Verbraucherschutzes - hierzu bereits an tizipiert. Ferner gilt es zu berucksichtigen, dass der Geschaftsverkehr uber das In ternet eine zusatzliche Flankierung durch die Moglichkeit der Abwicklung von "Zahlungsverkehr im Internet' erhalt. Die zahlreichen rechtlichen Probleme, die mit der Verwendung von Cybermoney etc. auftauchen, werden in Kapitel 4 aufge griffen. Das Kapitel 5 behandelt sodann mit dem Thema, Rechtssicherheit im digitalen Rechtsverkehr'' einen zentralen Gesichtspunkt des Rechtsverkehrs. Dabei wird neben dem deutschen Signaturgesetz samt Signaturverordnung auch die eu ropaische Rechtsentwicklung berucksichtigt. Der dritte Abschnitt umfasst "die Rechtsstellung der Beteiligten." Zentral hier fiir ist die Frage nach der Verantwortlichkeit die sowohl den Diensteanbieter Kapi tel 6) als auch den Netzbelreiber (Kapitel 7) betrifft. Die strafrechtliche Perspek tive wird gesondert in Kapitel 18 aufgenommen. Eine in der Praxis immer haufi ger auftretende Frage gilt der Einordnung der "Vertragsgestaltung zwischen den Beteiligten" woruber Kapitel 8 Auskunft gibt."

Mastering Professional Scrum - A Practitioners Guide to Overcoming Challenges and Maximizing the Benefits of Agility... Mastering Professional Scrum - A Practitioners Guide to Overcoming Challenges and Maximizing the Benefits of Agility (Paperback)
Stephanie Ockerman, Simon Reindl
R717 Discovery Miles 7 170 Ships in 10 - 15 working days

"Our job as Scrum professionals is to continually improve our ability to use Scrum to deliver products and services that help customers achieve valuable outcomes. This book will help you to improve your ability to apply Scrum." -From the Foreword by Ken Schwaber, co-author of Scrum Mastering Professional Scrum is for anyone who wants to deliver increased value by using Scrum more effectively. Leading Scrum practitioners Stephanie Ockerman and Simon Reindl draw on years of Scrum training and coaching to help you return to first principles and apply Scrum with the professionalism required to achieve its transformative potential. The authors aim to help you focus on proven Scrum approaches for improving quality, getting and using fast feedback, and becoming more adaptable, instead of "going through the motions" and settling for only modest improvements. Whether you're a Scrum Master, Development Team member, or Product Owner, you'll find practical advice for facing challenges with transparency and courage, overcoming a wide array of common challenges, and continually improving your Scrum practice. Realistically assess your current Scrum practice, and identify areas for improvement Recognize what a great Scrum Team looks like and get there Focus on "Done"-not "sort-of-Done" or "almost-Done" Measure and optimize the value delivered by every Product Increment Improve the way you plan, develop, and grow Clear away wider organizational impediments to agility and professionalism Overcome common misconceptions that stand in the way of progress Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details.

Der deutsche TV-Kabelmarkt - Spiele ums Netz Dynamik und Strategien (German, Hardcover, 2002 ed.): Peter Stritzl Der deutsche TV-Kabelmarkt - Spiele ums Netz Dynamik und Strategien (German, Hardcover, 2002 ed.)
Peter Stritzl; Assisted by S Stoll
R1,571 Discovery Miles 15 710 Ships in 10 - 15 working days

Das Buch thematisiert den deutschen Markt f r TV-Kabelnetze in seiner Entwicklung vom Monopol zum Wettbewerb. Schwerpunkt der Betrachtung bilden die auf diesem Markt handelnden Akteure mit ihren unterschiedlichen Interessen und Strategien. So wird die Bedeutung des ehemaligen Staatsmonopolisten "Deutsche Telekom" f r die Entwicklung dieses Marktes ebenso herausgestellt und kritisch analysiert, wie die der deutschen und internationalen Kabelnetzbetreiber. Zentrale Themen des Buches sind: Bedeutung von Wettbewerb und Deregulierung f r den deutschen TV-Kabelmarkt, Wettbewerbssituation und Potenziale privater Kabelnetzbetreiber. Diese Aspekte sind eingebettet in die Darstellung und Analyse der ordnungspolitischen Rahmenbedingungen des TV-Kabelmarktes sowie der hieraus resultierenden, innovativen Wettbewerbsbedingungen. Das Buch bietet einen im deutschsprachigen Raum einmaligen Einblick.

Business Information Warehouse - Perspektiven betrieblicher Informationsversorgung und Entscheidungsunterstutzung auf der Basis... Business Information Warehouse - Perspektiven betrieblicher Informationsversorgung und Entscheidungsunterstutzung auf der Basis von SAP-Systemen (German, Hardcover, 2005 ed.)
Peter Chamoni, Peter Gluchowski, Michael Hahne
R1,636 Discovery Miles 16 360 Ships in 18 - 22 working days

Die Versorgung des Managements mit validen und aktuellen Informationen zur Wahrnehmung der Fuhrungs-, Steuerungs- und Kontrollaufgaben ist zu einer der wichtigsten Herausforderungen fur die Wirtschaftsinformatik geworden. Die Forderung nach integrierten Informations- und Kommunikationssystemen, welche aus unternehmensinternen und unternehmensexternen Datenquellen entsch- dungsrelevante Informationen mit einem hohen Mass an Automatisierung zus- mentragen und aufbereiten, begleitet die IT-Abteilungen seit vielen Jahren. Unter wechselnden Schlagworten wurden Konzepte zur Informationsversorgung des Managements propagiert, deren Einsatztauglichkeit aber haufig hinter den Erw- tungen zuruckblieb. Dennoch haben sich in den 90er Jahren in fast allen Unt- nehmungen Data-Warehouse-Losungen durchsetzen konnen, da diese nachwe- lich zu einer erhohten Qualitat und Aktualitat der Informationsbereitstellung fur Fach- und Fuhrungskrafte beitragen. Unter dem Begriff Business Intelligence" werden derzeit dialogfahige Informationssysteme mit hohem Verfugungsgrad, intuitiver Nutzbarkeit und analytischer Funktionsvielfalt verbreitet, die auf dem bereinigten Datenbestand eines derartigen Data Warehouse aufsetzen. Der SAP AG gelang es, nach spatem Entwicklungsstart in diesem Marktsegment mit dem Produkt SAP Business Information Warehouse (SAP BW )" einen fuhrenden Platz einzunehmen. Als Plattform fur die Sammlung von betriebswi- schaftlichen Grunddaten ist das SAP BW ein wesentlicher Bestandteil der Anwendungsarchitektur im Gesamtkonzept der SAP-Produkte geworden. Samt- che Systemkomponenten, welche Planungs-, Steuerungs- und Berichtsaufgaben unterstutzen, beziehen jetzt und zukunftig ihre Daten aus dem SAP BW . Dies gilt sowohl fur das Produkt SAP Strategic Enterprise Management (SAP SEM )" als auch fur die Softwarekomponente SAP Advanced Planner and Optimizer (SAP APO ).""

Analyzing Qualitative Data with MAXQDA - Text, Audio, and Video (Hardcover, 1st ed. 2019): Udo Kuckartz, Stefan Radiker Analyzing Qualitative Data with MAXQDA - Text, Audio, and Video (Hardcover, 1st ed. 2019)
Udo Kuckartz, Stefan Radiker
R1,094 Discovery Miles 10 940 Ships in 9 - 17 working days

This book presents strategies for analyzing qualitative and mixed methods data with MAXQDA software, and provides guidance on implementing a variety of research methods and approaches, e.g. grounded theory, discourse analysis and qualitative content analysis, using the software. In addition, it explains specific topics, such as transcription, building a coding frame, visualization, analysis of videos, concept maps, group comparisons and the creation of literature reviews. The book is intended for masters and PhD students as well as researchers and practitioners dealing with qualitative data in various disciplines, including the educational and social sciences, psychology, public health, business or economics.

Learn Data Science Using SAS Studio - A Quick-Start Guide (Paperback, 1st ed.): Engy Fouda Learn Data Science Using SAS Studio - A Quick-Start Guide (Paperback, 1st ed.)
Engy Fouda
R1,325 Discovery Miles 13 250 Ships in 9 - 17 working days

Do you want to create data analysis reports without writing a line of code? This book introduces SAS Studio, a free data science web browser-based product for educational and non-commercial purposes. The power of SAS Studio comes from its visual point-and-click user interface that generates SAS code. It is easier to learn SAS Studio than to learn R and Python to accomplish data cleaning, statistics, and visualization tasks. The book includes a case study about analyzing the data required for predicting the results of presidential elections in the state of Maine for 2016 and 2020. In addition to the presidential elections, the book provides real-life examples including analyzing stocks, oil and gold prices, crime, marketing, and healthcare. You will see data science in action and how easy it is to perform complicated tasks and visualizations in SAS Studio. You will learn, step-by-step, how to do visualizations, including maps. In most cases, you will not need a line of code as you work with the SAS Studio graphical user interface. The book includes explanations of the code that SAS Studio generates automatically. You will learn how to edit this code to perform more complicated advanced tasks. The book introduces you to multiple SAS products such as SAS Viya, SAS Analytics, and SAS Visual Statistics. What You Will Learn Become familiar with SAS Studio IDE Understand essential visualizations Know the fundamental statistical analysis required in most data science and analytics reports Clean the most common data set problems Use linear progression for data prediction Write programs in SAS Get introduced to SAS-Viya, which is more potent than SAS studio Who This Book Is For A general audience of people who are new to data science, students, and data analysts and scientists who are experienced but new to SAS. No programming or in-depth statistics knowledge is needed.

Clinical Data Quality Checks for CDISC Compliance Using SAS (Paperback): Sunil Gupta Clinical Data Quality Checks for CDISC Compliance Using SAS (Paperback)
Sunil Gupta
R1,425 Discovery Miles 14 250 Ships in 10 - 15 working days

Clinical Data Quality Checks for CDISC Compliance using SAS is the first book focused on identifying and correcting data quality and CDISC compliance issues with real-world innovative SAS programming techniques such as Proc SQL, metadata and macro programming. Learn to master Proc SQL's subqueries and summary functions for multi-tasking process. Drawing on his more than 25 years' experience in the pharmaceutical industry, the author provides a unique approach that empowers SAS programmers to take control of data quality and CDISC compliance. This book helps you create a system of SDTM and ADaM checks that can be tracked for continuous improvement. How often have you encountered issues such as missing required variables, duplicate records, invalid derived variables and invalid sequence of two dates? With the SAS programming techniques introduced in this book, you can start to monitor these and more complex data and CDISC compliance issues. With increased standardization in SDTM and ADaM specifications and data values, codelist dictionaries can be created for better organization, planning and maintenance. This book includes a SAS program to create excel files containing unique values from all SDTM and ADaM variables as columns. In addition, another SAS program compares SDTM and ADaM codelist dictionaries with codelists from define.xml specifications. Having tools to automate this process greatly saves time from doing it manually. Features SDTMs and ADaMs Vitals SDTMs and ADaMs Data CDISC Specifications Compliance CDISC Data Compliance Protocol Compliance Codelist Dictionary Compliance

It-Projektrecht - Vertragliche Gestaltung Und Steuerung Von It-Projekten, Best Practices, Haftung Der Geschaftsleitung (German,... It-Projektrecht - Vertragliche Gestaltung Und Steuerung Von It-Projekten, Best Practices, Haftung Der Geschaftsleitung (German, Hardcover, 2007 ed.)
Frank Koch
R1,552 Discovery Miles 15 520 Ships in 18 - 22 working days

IT-Projekte mussen durch Projektvertrage auf allen Stufen gezielt gesteuert und kontrolliert werden, um erfolgreich zu sein. Der Autor geht auf die Verantwortlichkeit des Managements fur die Projektfuhrung ein und erlautert die aktuellen Normvorgaben fur IT-Projekte aus ISO 20.000 und ITIL. Behandelt werden auch Outsourcing und ASP sowie IT-Security, gewissermassen Dauerprojekte, ebenso die Sanierung von Projekten und die Anwenderrechte bei Anbieterinsolvenz.

Ausfuhrliche Checklisten fur CIOs und Geschaftsleitungen sollen schliesslich aus deren Blickwinkel die Projektkontrolle erleichtern. In dieser Themenkombination gibt es am Buchmarkt gegenwartig keine gleichartige Darstellung."

Principles of Statistical Analysis - Learning from Randomized Experiments (Paperback): Ery Arias-Castro Principles of Statistical Analysis - Learning from Randomized Experiments (Paperback)
Ery Arias-Castro
R969 Discovery Miles 9 690 Ships in 10 - 15 working days

This compact course is written for the mathematically literate reader who wants to learn to analyze data in a principled fashion. The language of mathematics enables clear exposition that can go quite deep, quite quickly, and naturally supports an axiomatic and inductive approach to data analysis. Starting with a good grounding in probability, the reader moves to statistical inference via topics of great practical importance - simulation and sampling, as well as experimental design and data collection - that are typically displaced from introductory accounts. The core of the book then covers both standard methods and such advanced topics as multiple testing, meta-analysis, and causal inference.

Mathematical Statistics with Applications in R (Paperback, 3rd edition): K. M Ramachandran, Chris P Tsokos Mathematical Statistics with Applications in R (Paperback, 3rd edition)
K. M Ramachandran, Chris P Tsokos
R2,817 Discovery Miles 28 170 Ships in 10 - 15 working days

Mathematical Statistics with Applications in R, Third Edition, offers a modern calculus-based theoretical introduction to mathematical statistics and applications. The book covers many modern statistical computational and simulation concepts that are not covered in other texts, such as the Jackknife, bootstrap methods, the EM algorithms, and Markov chain Monte Carlo (MCMC) methods, such as the Metropolis algorithm, Metropolis-Hastings algorithm and the Gibbs sampler. By combining discussion on the theory of statistics with a wealth of real-world applications, the book helps students to approach statistical problem-solving in a logical manner. Step-by-step procedure to solve real problems make the topics very accessible.

Service Engineering - Entwicklung und Gestaltung innovativer Dienstleistungen (German, Hardcover, 2., vollst. uberarb. u. erw:... Service Engineering - Entwicklung und Gestaltung innovativer Dienstleistungen (German, Hardcover, 2., vollst. uberarb. u. erw: Aufl. 2006)
Hans-Joerg Bullinger; Editorial coordination by K. Schneider; Edited by August-Wilhelm Scheer
R4,055 Discovery Miles 40 550 Ships in 10 - 15 working days

Die schnelle und effiziente Realisierung innovativer Dienstleistungen stellt zunehmend einen Erfolgsfaktor fur die Wettbewerbsfahigkeit von Dienstleistungsunternehmen dar. Dienstleistungen werden in der Praxis jedoch oft "ad hoc," d.h. ohne systematische Vorgehensweise, entwickelt. Das Konzept des "Service Engineering" beschreibt Vorgehensweisen, Methoden und Werkzeugunterstutzung fur die systematische Planung, Entwicklung und Realisierung innovativer Dienstleistungen. Ziel des Buches ist es, Wissenschaftlern und Praktikern gleichermassen einen Uberblick uber den aktuellen Kenntnisstand wie auch uber zukunftige Tendenzen im Service Engineering zu geben. Die Beitrage wurden fur die Neuauflage aktualisiert, zusatzlich wurden Beitrage namhafter Autoren aus Wissenschaft und Praxis in wichtigen, aber bislang unbesetzten Themenfeldern aufgenommen. "

Electronic Commerce (Paperback, 12th edition): Gary Schneider Electronic Commerce (Paperback, 12th edition)
Gary Schneider 2
R1,284 R1,195 Discovery Miles 11 950 Save R89 (7%) Ships in 10 - 15 working days

Examine the latest developments in online business with cutting-edge coverage, real examples, actual business cases, and hands-on applications found in the market-leading ELECTRONIC COMMERCE, 12E. With comprehensive coverage of emerging strategies and today's most important technologies, this popular book equips you with a solid understanding of the dynamics of this fast-paced industry. The new edition offers thorough discussions of e-commerce growth in the rapidly-developing economies of China, India, and Brazil. You also examine key topics, such as social media and online marketing strategies, technology-enabled outsourcing, and online payment processing systems. New intriguing "Learning From Failure" segments help you draw important lessons from the experiences of actual companies as you review real-world e-commerce practices in action.

Time Series Data Analysis in Oceanography - Applications using MATLAB (Hardcover, New edition): Chunyan Li Time Series Data Analysis in Oceanography - Applications using MATLAB (Hardcover, New edition)
Chunyan Li
R1,670 R1,424 Discovery Miles 14 240 Save R246 (15%) Ships in 10 - 15 working days

Chunyan Li is a course instructor with many years of experience in teaching about time series analysis. His book is essential for students and researchers in oceanography and other subjects in the Earth sciences, looking for a complete coverage of the theory and practice of time series data analysis using MATLAB. This textbook covers the topic's core theory in depth, and provides numerous instructional examples, many drawn directly from the author's own teaching experience, using data files, examples, and exercises. The book explores many concepts, including time; distance on Earth; wind, current, and wave data formats; finding a subset of ship-based data along planned or random transects; error propagation; Taylor series expansion for error estimates; the least squares method; base functions and linear independence of base functions; tidal harmonic analysis; Fourier series and the generalized Fourier transform; filtering techniques: sampling theorems: finite sampling effects; wavelet analysis; and EOF analysis.

Data Visualization - A Practical Introduction (Paperback): Kieran Healy Data Visualization - A Practical Introduction (Paperback)
Kieran Healy
R1,188 R1,120 Discovery Miles 11 200 Save R68 (6%) Ships in 9 - 17 working days

An accessible primer on how to create effective graphics from data This book provides students and researchers a hands-on introduction to the principles and practice of data visualization. It explains what makes some graphs succeed while others fail, how to make high-quality figures from data using powerful and reproducible methods, and how to think about data visualization in an honest and effective way. Data Visualization builds the reader's expertise in ggplot2, a versatile visualization library for the R programming language. Through a series of worked examples, this accessible primer then demonstrates how to create plots piece by piece, beginning with summaries of single variables and moving on to more complex graphics. Topics include plotting continuous and categorical variables; layering information on graphics; producing effective "small multiple" plots; grouping, summarizing, and transforming data for plotting; creating maps; working with the output of statistical models; and refining plots to make them more comprehensible. Effective graphics are essential to communicating ideas and a great way to better understand data. This book provides the practical skills students and practitioners need to visualize quantitative data and get the most out of their research findings. Provides hands-on instruction using R and ggplot2 Shows how the "tidyverse" of data analysis tools makes working with R easier and more consistent Includes a library of data sets, code, and functions

E-Commerce - Netze, Markte, Technologien (German, Hardcover, 2002 ed.): Christof Weinhardt, Carsten Holtmann E-Commerce - Netze, Markte, Technologien (German, Hardcover, 2002 ed.)
Christof Weinhardt, Carsten Holtmann
R1,666 Discovery Miles 16 660 Ships in 18 - 22 working days

Das Verstandnis des einstigen Modewortes "E-Commerce" hat sich verschoben. Nicht langer stehen vage Prognosen im Mittelpunkt. Der vorliegende Band unterzieht die Potenziale des Technologieeinsatzes und ihrer nachhaltigen oekonomischen Verwertung einer realistischen Analyse. Namhafte Wissenschaftler und Praktiker geben einen UEberblick uber die aktuelle Forschung sowie Anwendungen in den Bereichen Netze, Markte, Dienste und Technologien. Dabei werden die Moeglichkeiten der Umsetzung innovativer wissenschaftlicher Ansatze in die Praxis, aber auch des Transfers praxisrelevanter Problemstellungen in die Forschungslabors sowohl aus oekonomischer als auch aus informationstechnischer Sicht beleuchtet.

Computer Intensive Methods in Statistics (Hardcover): Silvelyn  Zwanzig, Behrang Mahjani Computer Intensive Methods in Statistics (Hardcover)
Silvelyn Zwanzig, Behrang Mahjani
R4,949 Discovery Miles 49 490 Ships in 10 - 15 working days

Presents the main ideas of computer-intensive statistical methods Gives the algorithms for all the methods Uses various plots and illustrations for explaining the main ideas Features the theoretical backgrounds of the main methods. Includes R codes for the methods and examples

Multiscale Forecasting Models (Hardcover, 1st ed. 2018): Lida Mercedes Barba Maggi Multiscale Forecasting Models (Hardcover, 1st ed. 2018)
Lida Mercedes Barba Maggi
R3,006 R2,472 Discovery Miles 24 720 Save R534 (18%) Ships in 10 - 15 working days

This book presents two new decomposition methods to decompose a time series in intrinsic components of low and high frequencies. The methods are based on Singular Value Decomposition (SVD) of a Hankel matrix (HSVD). The proposed decomposition is used to improve the accuracy of linear and nonlinear auto-regressive models. Linear Auto-regressive models (AR, ARMA and ARIMA) and Auto-regressive Neural Networks (ANNs) have been found insufficient because of the highly complicated nature of some time series. Hybrid models are a recent solution to deal with non-stationary processes which combine pre-processing techniques with conventional forecasters, some pre-processing techniques broadly implemented are Singular Spectrum Analysis (SSA) and Stationary Wavelet Transform (SWT). Although the flexibility of SSA and SWT allows their usage in a wide range of forecast problems, there is a lack of standard methods to select their parameters. The proposed decomposition HSVD and Multilevel SVD are described in detail through time series coming from the transport and fishery sectors. Further, for comparison purposes, it is evaluated the forecast accuracy reached by SSA and SWT, both jointly with AR-based models and ANNs.

Hands-On Machine Learning with R (Hardcover): Brad Boehmke, Brandon M. Greenwell Hands-On Machine Learning with R (Hardcover)
Brad Boehmke, Brandon M. Greenwell
R2,746 Discovery Miles 27 460 Ships in 10 - 15 working days

Hands-on Machine Learning with R provides a practical and applied approach to learning and developing intuition into today's most popular machine learning methods. This book serves as a practitioner's guide to the machine learning process and is meant to help the reader learn to apply the machine learning stack within R, which includes using various R packages such as glmnet, h2o, ranger, xgboost, keras, and others to effectively model and gain insight from their data. The book favors a hands-on approach, providing an intuitive understanding of machine learning concepts through concrete examples and just a little bit of theory. Throughout this book, the reader will be exposed to the entire machine learning process including feature engineering, resampling, hyperparameter tuning, model evaluation, and interpretation. The reader will be exposed to powerful algorithms such as regularized regression, random forests, gradient boosting machines, deep learning, generalized low rank models, and more! By favoring a hands-on approach and using real word data, the reader will gain an intuitive understanding of the architectures and engines that drive these algorithms and packages, understand when and how to tune the various hyperparameters, and be able to interpret model results. By the end of this book, the reader should have a firm grasp of R's machine learning stack and be able to implement a systematic approach for producing high quality modeling results. Features: * Offers a practical and applied introduction to the most popular machine learning methods. * Topics covered include feature engineering, resampling, deep learning and more. * Uses a hands-on approach and real world data.

An Introduction to Statistical Learning - with Applications in R (Paperback, 2nd ed. 2021): Gareth James, Daniela Witten,... An Introduction to Statistical Learning - with Applications in R (Paperback, 2nd ed. 2021)
Gareth James, Daniela Witten, Trevor Hastie, Robert Tibshirani
R1,978 R1,590 Discovery Miles 15 900 Save R388 (20%) Ships in 10 - 15 working days

An Introduction to Statistical Learning provides an accessible overview of the field of statistical learning, an essential toolset for making sense of the vast and complex data sets that have emerged in fields ranging from biology to finance to marketing to astrophysics in the past twenty years. This book presents some of the most important modeling and prediction techniques, along with relevant applications. Topics include linear regression, classification, resampling methods, shrinkage approaches, tree-based methods, support vector machines, clustering, deep learning, survival analysis, multiple testing, and more. Color graphics and real-world examples are used to illustrate the methods presented. Since the goal of this textbook is to facilitate the use of these statistical learning techniques by practitioners in science, industry, and other fields, each chapter contains a tutorial on implementing the analyses and methods presented in R, an extremely popular open source statistical software platform. Two of the authors co-wrote The Elements of Statistical Learning (Hastie, Tibshirani and Friedman, 2nd edition 2009), a popular reference book for statistics and machine learning researchers. An Introduction to Statistical Learning covers many of the same topics, but at a level accessible to a much broader audience. This book is targeted at statisticians and non-statisticians alike who wish to use cutting-edge statistical learning techniques to analyze their data. The text assumes only a previous course in linear regression and no knowledge of matrix algebra. This Second Edition features new chapters on deep learning, survival analysis, and multiple testing, as well as expanded treatments of naive Bayes, generalized linear models, Bayesian additive regression trees, and matrix completion. R code has been updated throughout to ensure compatibility.

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