[此贴子已经被作者于2009-3-14 5:10:25编辑过]
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[分享]免费Ebook Statistical Distributions by Merran Evans
本附件包括:
sqy:
我发给论坛管理者的时候并没有提到要金币,是他们好意加的金币额度,我会发邮件请他们更正.但是我不欣赏你这种说话的口气.
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@逆水行舟:已删除sqy的帖子。
-------------wesker1999
[此贴子已经被wesker1999于2009-3-10 5:26:08编辑过]
Evans et al offer a group of probability distribution functions. Each is given a few pages in which it is described. Often with formulas for the mean and variance and median. Sometimes, there are also expressions for the skewness and kurtosis. The conciseness of the descriptions make this a handy reference guide.
You should be clear on this. The book is not one to learn about these distributions for the first time. Of course, there are an infinite number of possible distributions. But the choices in the book are many that you are likely to run across in statistical applications.
Summary: Great overview - missing Levy flights; no index
Rating: 3
This is a very good overview of a variety of statistical distributions. I particularly like the empirical distribution, which gives a detailed method for constructing a distribution from empirical data.
However, it lacks some details that I am interested in such as the Levy distribution, robust comparisons between empirical and theoretical distributions, and a focus or discussion on distribution tails.
I knocked off another star because, incredibly, the book lacks and index.
Summary: Very helpful
Rating: 4
No book can possibly cover all distributions - new ones seem to show up in every new problem that arises. This book covers the common ones, maybe all the distributions a student sees in the first stats course or two.
The coverage is quite good for routine, and some non-routine purposes. I find the characteristic functions especially helpful. Each distribution's description of how it arises is also very useful - it's the kind of information that a practitioner needs in order to apply distributions to problems in meaningful ways.
I know that no book can say everything, but a few additions would have improved this book significantly. More discussion of applications would have helped. So would a discussion of general techniques for generating random numbers - inverse distributions, rejection, etc.
The two real weaknesses I found were in the extreme value and the empirical distributions. Extreme values don't stand alone. They often arise in ways dependent on other distributions. An extreme value distribution might describe the results of many experiments that find the largest of N values drawn from distribution P - with different results according to P. These distributions don't have convenient closed forms, but are amenable to some kinds of analysis anyway.
Perhaps the authors do a reasonable job of empirical distributions in the continuous case, but discrete (categorical) cases arise more in my work. Discrete distributions must answer such questions as: given that my sampling may not have found objects of all possible types, how many unknown types are probably still out there? Lots of problems have distributions too complicated for analysis or too poorly understood for book formulas to work, and must be handled empirically. More discussion of empirical techniques would make this a much stronger reference.
Despite its soft spots, this is a very practical reference. I expect it to be a productive member of my technical library.
Summary: concise handbook
Rating: 4
This is an extremely valuable compendium of what almost any pracitioner needs to know about 40 of the most commonly used statistical distributions. It is designed as a quick lookup reference for each of the distributions. Most chapters begin with a few brief lines describing some of the applications of the distribution, and then provide a list of relevant formulae, such as for the distribution function, probability density, moments etc. Relationships to other distributions are defined, means of estimating the parameters provided, and ways of generating random numbers from the distribution are indicated.
Graphs of the distributions are shown with varying parameter values in most cases.
The book should be seen purely as a handbook on statistical distributions, not as a theoretical reference. The book is ideal for those who make use of statistical distributions in other fields, and who are not necessarily statisticians themselves. I have no formal statistics training, but use distributions extensively in my own work, and found this book very easy to understand. I have been using Johnson and Kotz monographs fairly extensively as references for the distributions in which I am interested, but find this book a much simpler reference for the basic facts of the distributions. In addition, its consistent use of notation across the chapters makes it much easier for the reader to cross reference.
I refrain from giving 5 stars to the book because of a few weaknesses, primarily omissions. Firstly, as an earlier reviewer pointed out, the lack of an index is a little annoying sometimes. Secondly, the bibliography is very slim, and so the reader interested in finding further details, proofs etc., is given very little direction. Thirdly, there are a few obvious omissions, such as the cumulative distribution function for the chi-squared distribution. Fourthly, random number generation is described only when the generation is relatively simple (for example, a method for generating random variates from a gamma distribution is described only for special cases). Finally, I would like to have seen more guidance provided in the sections on parameter estimation, such as first and second derivatives of log-likelihood functions when the estimates have to be derived iteratively.
Summary: the only book you'll ever need on distributions
Rating: 5
This is the most thorough reference on distributions that I have found. The information contained about each distribution is concisely stated in a few pages - you would probably have to look in several books to get the same material. Most useful to people writing digital simulations is instructions on how to generate the distribution using random number generators. This is especially useful if you don't have access to statistical software packages. Lack of an index detracts, but is minor. Listings are alphabetical, by distribution name, so you might have to page through the book to find one that is not in an obvious location (like continuous uniform is listed as "rectangular", but discrete uniform is listed as "discrete uniform"). You need to be familiar with basic statistics to understand the book; but you don't have to be a statistician.
如果用的是firefox,就试试换个浏览器。
不少用firefox浏览器的人都所上传附件时会出问题。
非常感谢wesker1999的建议.
我换了IE, 果然就能看到上传文件的代码了. 我重新上传了文件,并且自己试着下载了, 现在一切工作正常.
不愧是论坛前辈啊,一下就知道问题所在了. 
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