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Books > Computing & IT > Computer software packages > Other software packages > Mathematical & statistical software
Why learn R? Because it's rapidly becoming the standard for
developing statistical software. R in a Nutshell provides a quick
and practical way to learn this increasingly popular open source
language and environment. You'll not only learn how to program in
R, but also how to find the right user-contributed R packages for
statistical modeling, visualization, and bioinformatics. The author
introduces you to the R environment, including the R graphical user
interface and console, and takes you through the fundamentals of
the object-oriented R language. Then, through a variety of
practical examples from medicine, business, and sports, you'll
learn how you can use this remarkable tool to solve your own data
analysis problems. * Understand the basics of the language,
including the nature of R objects * Learn how to write R functions
and build your own packages * Work with data through visualization,
statistical analysis, and other methods * Explore the wealth of
packages contributed by the R community * Become familiar with the
lattice graphics package for high-level data visualization * Learn
about bioinformatics packages provided by Bioconductor "I am
excited about this book.R in a Nutshell is a great introduction to
R, as well as a comprehensive reference for using R in data
analytics and visualization. Adler provides 'real world' examples,
practical advice, and scripts, making it accessible to anyone
working with data, not just professional statisticians." --Martin
Schultz, Arthur K. Watson Professor of Computer Science, Yale
University
Keeping the uniquely humorous and self-deprecating style that has
made students across the world fall in love with Andy Field's
books, Discovering Statistics Using R takes students on a journey
of statistical discovery using R, a free, flexible and dynamically
changing software tool for data analysis that is becoming
increasingly popular across the social and behavioural sciences
throughout the world. The journey begins by explaining basic
statistical and research concepts before a guided tour of the R
software environment. Next you discover the importance of exploring
and graphing data, before moving onto statistical tests that are
the foundations of the rest of the book (for example correlation
and regression). You will then stride confidently into intermediate
level analyses such as ANOVA, before ending your journey with
advanced techniques such as MANOVA and multilevel models. Although
there is enough theory to help you gain the necessary conceptual
understanding of what you're doing, the emphasis is on applying
what you learn to playful and real-world examples that should make
the experience more fun than you might expect. Like its sister
textbooks, Discovering Statistics Using R is written in an
irreverent style and follows the same ground-breaking structure and
pedagogical approach. The core material is augmented by a cast of
characters to help the reader on their way, together with hundreds
of examples, self-assessment tests to consolidate knowledge, and
additional website material for those wanting to learn more. Given
this book's accessibility, fun spirit, and use of bizarre
real-world research it should be essential for anyone wanting to
learn about statistics using the freely-available R software.
Recent advances in the understanding of star formation and
evolution have been impressive and aspects of that knowledge are
explored in this volume. The black hole stellar endpoints are
studied and geodesic motion is explored. The emission of
gravitational waves is featured due to their very recent
experimental discovery.The second aspect of the text is space
exploration which began 62 years ago with the Sputnik Earth
satellite followed by the landing on the Moon just 50 years ago.
Since then Mars has been explored remotely as well as flybys of the
outer planets and probes which have escaped the solar system. The
text explores many aspects of rocket travel. Finally possibilities
for interstellar travel are discussed.All these topics are treated
in a unified way using the Matlab App to combine text, figures,
formulae and numeric input and output. In this way the reader may
vary parameters and see the results in real time. That experience
aids in building up an intuitive feel for the many specific
problems given in this text.
In unserer Arbeit [ 7] werden beschrEinkte lineare Funktionale auf
verschiedenen R umen stetiger Funktionen untersucht und zwar die
Gultig eit von Riesz-Darstellungss tzen. W hrend wir uns dort auf
stetige Funktionen beschr nken, nehmen wir hier die R ume
Lebesgue-integrierbarer Funktionen hinzu. Ein Aspekt der obigen
Arbeit ist der Zusammenhang zwischen dem BV[O,
l]-Hausdorff-Momentenproblem und dem C[O, l]-Riesz-Dar-
stellungssatz: einmal kann man den C[O, l]-Riesz-Satz durch An-
wendung des BV[O, l]-Hausdorff-Momentenproblems beweisen (vgl.
[20], [39]), aber umgekehrt l t sich das Hausdorff-Momentenproblem
Uber den Riesz-Darstellungssatz IBsen (vgl. [19], [25]). Es stellt
sich daher die Frage, ob ein hnlicher . Zusammenhang nach- gewiesen
werden kann zwischen den Riesz-Darstellungss tzen fUr verschiedene
R ume stetiger bzw. Lebesgue-integrierbarer Funk- tionen und
gewissen Momentenproblemen mit Belegungsfunktionen aus den dualen R
umen. Dazu wollen wir zun chst einmal verschiedene Funktionenr ume
definieren. Fur reel Ie Zahlen a und b, a
Aufbauend auf einer frUheren Untersuchung (vgl. Nr. 2 des
Literatur- Verzeichnisses) wurde am Forschungsinstitut fUr
Rationalisierung ein EDV-Programmsystem entwickelt, das in dem
vorliegenden Bericht seinen Niederschlag gefunden hat. Aufgabe des
Programmsystems ist es, aIle im Zusammenhang mit der DurchfUhrung
von Multimoment-Studien (im folgen- den MM-Studien) anfallenden
Arbeiten, die maschinell ausgefUhrt werden konnen, einem Rechner zu
Ubertragen. Der Name MAVAMM ist die AbkUrzung fUr MAschinelle
yorbereitung und uswertung von ulti ment-Aufnahmen. Die Zielsetzung
einer maschinellen Datenverarbeitung bei MM-Studien loBt sich wie
folgt charakterisieren: 1. Verwirklichung einer umfassenden
Rationalisierung von MM-Studien Maschinelle AusfUhrung oller
formalisierbaren Arbeiten wie Auszah- len, Sortieren, Schreiben und
Rechnen, die mit dem Erstellen der Aufnahmebogen, der Aufbereitung
des Erhebungsmaterials und der Aus- wertung einschlieBlich der
statistischen Analyse der Beobachtungs- ergebnisse verbunden sind.
2. Erweiterung der ErschlieBungstechnik und damit der
Aussagemoglich- keiten von MM-Aufnahmen Nutzung verschiedener
zusatzlicher Auswertungsmoglichkeiten, z.B. nach
Beobachtungs-Objekten, Aufnahme-Bereichen, Aufnahme-Uhrzeit und
Aufnahme-Tagen sowie Ausgabe der Ergebnisse in anschaulicher Form.
Moglichkeit zum NachprUfen der modellbedingten Voraussetzun- gen
fUr die Anwendung des MM-Verfahrens aufgrund der differenzier- ten
Darstellung der Ergebnisse und ihrer statistischen Analyse. 3.
Schnellere Bereitstellung von Untersuchungsergebnissen Die
Vorbereitung von MM-Aufnahmen nimmt wenig Zeit in Anspruch und die
Auswertungsergebnisse stehen unmittelbar nach AbschluB der Er-
hebungen, d.h. wenn sie noch aktuell sind, zur VerfUgung. 5 4.
Berechnung genauerer Auswertungsergebnisse Die bei einer manuellen
Auswertung von HH-Aufnahmen maglichen Uber- tragungs-, Sortier-,
Rechen- und Schreibfehler werden weitgehend ausgeschaltet.
In information technology, the concepts of cost, time, delivery,
space, quality, durability, and price have gained greater
importance in solving managerial decision-making problems in supply
chain models, transportation problems, and inventory control
problems. Moreover, competition is becoming tougher in imprecise
environments. Neutrosophic sets and logic are gaining significant
attention in solving real-life problems that involve uncertainty,
impreciseness, vagueness, incompleteness, inconsistency, and
indeterminacy. Neutrosophic Sets in Decision Analysis and
Operations Research is a critical, scholarly publication that
examines various aspects of organizational research through
mathematical equations and algorithms and presents neutrosophic
theories and their applications in various optimization fields.
Featuring a wide range of topics such as information retrieval,
decision making, and matrices, this book is ideal for engineers,
technicians, designers, mathematicians, practitioners of
mathematics in economy and technology, scientists, academicians,
professionals, managers, researchers, and students.
This textbook presents an introduction to generalized linear
models, complete with real-world data sets and practice problems,
making it applicable for both beginning and advanced students of
applied statistics. Generalized linear models (GLMs) are powerful
tools in applied statistics that extend the ideas of multiple
linear regression and analysis of variance to include response
variables that are not normally distributed. As such, GLMs can
model a wide variety of data types including counts, proportions,
and binary outcomes or positive quantities. The book is designed
with the student in mind, making it suitable for self-study or a
structured course. Beginning with an introduction to linear
regression, the book also devotes time to advanced topics not
typically included in introductory textbooks. It features chapter
introductions and summaries, clear examples, and many practice
problems, all carefully designed to balance theory and practice.
The text also provides a working knowledge of applied statistical
practice through the extensive use of R, which is integrated into
the text. Other features include: * Advanced topics such as power
variance functions, saddlepoint approximations, likelihood score
tests, modified profile likelihood, small-dispersion asymptotics,
and randomized quantile residuals * Nearly 100 data sets in the
companion R package GLMsData * Examples that are cross-referenced
to the companion data set, allowing readers to load the data and
follow the analysis in their own R session
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