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    <title>Notebooks   </title>
    <link>http://bactra.org/notebooks</link>
    <description>Cosma's Notebooks</description>
    <language>en</language>

  <item>
    <title>Probability Theory</title>
    <link>http://bactra.org/notebooks/2009/11/09#probability</link>
    <description>
&lt;P&gt;One of my advisers in graduate school was a probability theorist, as was his
adviser before him; I've not bothered to check, but I wouldn't be astonished if
the chain went back to someone like Bernoulli.  The fact that the chain could
go back that far shows that mathematical probability is an old concept, almost
as old as any other part of modern science; on the other hand, my adviser's
adviser came just after the generation, between the wars, which made
probability a respectable and rigorous branch of mathematics and removed
countless obscurities from its applications, and the first serious use of
statistical methods in the sciences came only about a hundred years before
that.  Now of course error analysis is the first thing my students learn when
they enter the lab.  (Well, almost the first thing, after &quot;if you don't write
it down, it never happened&quot; and &quot;Cosma can be bribed with chocolate.&quot;)  I am
conditioned to attack every problem as some kind of stochastic process; but a
few generations back nobody had any but the vaguest idea what a stochastic
process was.

&lt;P&gt;Pet peeves: Physicists who do not distinguish between a random variable (&quot;X
= the roll of a die&quot;) and the value it takes (&quot;x=5&quot;).  People who report
numbers without error-bars or confidence-intervals.  Bayesians.

&lt;P&gt;Cf. &lt;a href=&quot;math.html&quot;&gt;math in general&lt;/a&gt;,
	&lt;a href=&quot;stochastic-processes.html&quot;&gt;stochastic processes&lt;/a&gt;,
	&lt;a href=&quot;statistics.html&quot;&gt;statistics&lt;/a&gt;,
	&lt;a href=&quot;information-theory.html&quot;&gt;information theory&lt;/a&gt;,
	&lt;a href=&quot;stat-mech.html&quot;&gt;statistical mechanics&lt;/a&gt;,
	&lt;a href=&quot;ergodic-theory.html&quot;&gt;ergodic theory&lt;/a&gt;,
	&lt;a href=&quot;learning-inference-induction.html&quot;&gt;machine learning,
statistical inference and induction&lt;/a&gt;,
	&lt;a href=&quot;chaos.html&quot;&gt;dynamics&lt;/a&gt;;
	&lt;a href=&quot;large-deviations.html&quot;&gt;large deviations&lt;/a&gt;;
	&lt;a href=&quot;empirical-process-theory.html&quot;&gt;empirical process theory&lt;/a&gt;

&lt;ul&gt;Recommended, big-picture:
	&lt;li&gt;Patrick Billingsley, &lt;cite&gt;Probability and Measure&lt;/cite&gt;
	&lt;li&gt;Harald Cram&amp;eacute;r, &lt;cite&gt;Mathematical Methods of
Statistics&lt;/cite&gt; [&lt;a href=&quot;../reviews/cramer-on-math-stat/&quot;&gt;Review&lt;/a&gt;]
	&lt;li&gt;Feller, &lt;cite&gt;An Introduction to Probability Theory and Its
Applications&lt;/cite&gt;, vol. I [I've not finished vol. II yet...]
	&lt;li&gt;Bert Fristedt and Lawrence Gray, &lt;cite&gt;A Modern Approach to
Probability Theory&lt;/cite&gt; [Extremely thorough measure-theoretic text; nice
treatment of stochastic processes]
	&lt;li&gt;Geoffrey Grimmett and David Stirzaker, &lt;cite&gt;Probability and Random
Processes&lt;/cite&gt; [Maybe the best contemporary textbook for those who do not
need measure-theoretic probability]
	&lt;li&gt;Ian Hacking
		&lt;ul&gt;
		&lt;li&gt;&lt;cite&gt;The Emergence of Probability&lt;/cite&gt; [Where that
strange two-faced notion came from, and why]
		&lt;li&gt;&lt;cite&gt;The Taming of Chance&lt;/cite&gt; [Putting chance to work
in the 19th century]
		&lt;/ul&gt;
	&lt;li&gt;Mark Kac
		&lt;ul&gt;
		&lt;li&gt;&lt;cite&gt;Engimas of Chance&lt;/cite&gt;
		&lt;li&gt;&lt;cite&gt;Probability and Related Topics in Physical
Science&lt;/cite&gt;
		&lt;li&gt;&lt;cite&gt;Statistical Independence in Probability, Analysis and
Number Theory&lt;/cite&gt;
		&lt;/ul&gt;
	&lt;li&gt;Olav Kallenberg, &lt;cite&gt;Foundations of Modern Probability&lt;/cite&gt;
[My preferred textbook when teaching stochastic processes]
	&lt;li&gt;Michel Lo&amp;egrave;ve, &lt;cite&gt;Probability Theory&lt;/cite&gt;
	&lt;li&gt;David Pollard, &lt;cite&gt;A User's Guide to Measure-Theoretic
Probability&lt;/cite&gt;
	&lt;li&gt;&lt;a href=&quot;http://www.mth.kcl.ac.uk/~streater/&quot;&gt;R. F. Streater&lt;/a&gt;,
&quot;Classical and Quantum Probability,&quot;
&lt;a href=&quot;http://arxiv.org/abs/math-ph/0002049&quot;&gt;math-ph/0002049&lt;/a&gt; [&quot;There are
few mathematical topics that are as badly taught to physicists as probability
theory.&quot;]
	&lt;li&gt;Aram Thomasian, &lt;cite&gt;The Structure of Probability Theory&lt;/cite&gt;
	&lt;/ul&gt;

&lt;ul&gt;Recommended, close-ups:
	&lt;li&gt;Philippe Barbe, &quot;An Elementary Approach to Extreme
Values Theory&quot;, &lt;a href=&quot;http://arxiv.org/abs/0811.0753&quot;&gt;arxiv:0811.0753&lt;/a&gt;
	&lt;li&gt;Clark Glymour, &quot;Instrumental Probability&quot;, &lt;cite&gt;Monist&lt;/cite&gt;
&lt;strong&gt;84&lt;/strong&gt; (2001): 284--300 [&lt;a href=&quot;http://www.hss.cmu.edu/philosophy/glymour/glymour2001.pdf&quot;&gt;PDF reprint&lt;/a&gt;]
	&lt;li&gt;Alexander E. Holroyd and Terry Soo, &quot;A Non-Measurable Set from
Coin-Flips&quot;, &lt;a href=&quot;http://arxiv.org/abs/math.PR/0610705&quot;&gt;math.PR/0610705&lt;/a&gt;
[A cute construction to help students see the point of measure-theoretic
probability]
	&lt;li&gt;Jakob Rosenthal, &quot;The Natural-Range Conception of Probability&quot;,
&lt;a href=&quot;http://philsci-archive.pitt.edu/archive/00004978/&quot;&gt;phil-sci/4978&lt;/a&gt;
[Defends the thesis that &quot;the probability of an event is the proportion of
initial states that lead to this event in the space of all possible initial
states, provided that this proportion is approximately the same in any not too
small interval of the initial state space. This idea can also be expressed by
saying that in the types of situations that give rise to probabilistic
phenomena we may expect to find an initial state space such that any
'reasonable' density function over this space leads to the same probabilities
for the possible outcomes.&quot;]
	&lt;/ul&gt;

&lt;ul&gt;To read, historical:
	&lt;li&gt;Lorraine Daston, &lt;cite&gt;Classical Probability in the
Enlightenment&lt;/cite&gt; [&lt;a
href=&quot;http://pup.princeton.edu/titles/4295.html&quot;&gt;blurb&lt;/a&gt;]
	&lt;li&gt;Gerd Gigerenzer, Zeno Switjtink, Theodore Porter, Lorraine Daston,
John Beatty and Lorenz Kr&amp;uuml;ger, &lt;cite&gt;The Empire of Chance: How Probability
Changed Science and Everyday Life&lt;/cite&gt;
	&lt;li&gt;Kendall and Plackett (eds.), &lt;cite&gt;Studies in the History of
Statistics and Probability&lt;/cite&gt;
	&lt;li&gt;Andrei Kolmogorov, &lt;cite&gt;Foundations of Probability Theory&lt;/cite&gt;
	&lt;li&gt;Glenn Shafer and Vladimir Vovk, &quot;The Sources of Kolmogorov's
Grundbegriffe&quot;, &lt;cite&gt;Statistical Science&lt;/cite&gt; &lt;strong&gt;21&lt;/strong&gt; (2006):
70--98 = &lt;a href=&quot;http://arxiv.org/abs/math.ST/0606533&quot;&gt;math.ST/0606533&lt;/a&gt;
	&lt;li&gt;Jan von Plato, &lt;cite&gt;Creating Modern Probability&lt;/cite&gt;
	&lt;/ul&gt;

&lt;ul&gt;To read, philosophical and foundational:
	&lt;li&gt;Jill North, &quot;Symmetry and Probability&quot;, &lt;a
href=&quot;http://philsci-archive.pitt.edu/archive/00002978/&quot;&gt;phil-sci/2978&lt;/a&gt;
	&lt;li&gt;Michael Strevens, &lt;cite&gt;Bigger than Chaos: Understanding Complexity
through Probability&lt;/cite&gt;
	&lt;/ul&gt;

&lt;ul&gt;To read, pedagogical:
	&lt;li&gt;Blom, Holst and Sandell, &lt;cite&gt;Problems and Snapshots from the
World of Probability&lt;/cite&gt; [&quot;It is obvious that the authors have had fun in
writing this book...&quot;]
	&lt;li&gt;Morris DeGroot, &lt;cite&gt;Probability and Statistics&lt;/cite&gt; [Sainted
founder of the CMU department of statistics, still fondly recalled as &quot;Morrie&quot;
by the senior faculty, as in, &quot;What would Morrie do?&quot;]
	&lt;li&gt;F. M. Dekking, C. Kraaikamp, H. P. Lopuha&amp;auml; and L. E. Meester,
&lt;cite&gt;A Modern Introduction to Probability and Statistics: Understanding How
and Why&lt;/cite&gt; [&lt;a
href=&quot;http://www.springeronline.com/sgw/cda/frontpage/0,11855,5-0-22-34951942-0,00.html&quot;&gt;Blurb&lt;/a&gt;]
	&lt;li&gt;Alvin W. Drake, &lt;cite&gt;Fundamentals of Applied Probability
Theory&lt;/cite&gt; [Gets rapturous reviews from students who've used it; this is a
nearly infallible sign of quality in a textbook]
	&lt;li&gt;Feller, &lt;cite&gt;An Introduction to Probability Theory and Its
Applications&lt;/cite&gt; vol. II
	&lt;li&gt;Allan Gut, &lt;citE&gt;Probability: A Graduate Course&lt;/cite&gt; [From the
back: &quot;'I know it's trivial, but I have forgotten why'. This is a slightly
exaggerated characterization of the unfortunate attitude of many mathematicians
toward the surrounding world. The point of departure of this book is the
opposite.  This textbook on the theory of probability is aimed at graduate
students, with the ideology that rather than being a purely mathematical
discipline, probability theory is an intimate companion of statistics.&quot;
&lt;a
href=&quot;http://www.springeronline.com/sgw/cda/frontpage/0,11855,5-0-22-34953310-0,00.html&quot;&gt;Blurb&lt;/a&gt;]
	&lt;li&gt;Emmanuel Lesigne, &lt;cite&gt;Heads or Tails: An Introduction to Limit
Theorems in Probability&lt;/cite&gt;
[&lt;a
href=&quot;http://www.ams.org/bookstore?fn=20&amp;arg1=probability&amp;item=STML-28&quot;&gt;blurb&lt;/a&gt;]
	&lt;li&gt;Papoulis, &lt;cite&gt;Probability, Random Variables and Stochastic
Processes&lt;/cite&gt;
	&lt;li&gt;Peter Olofsson, &lt;cite&gt;Probability, Statistics, and Stochastic
Processes&lt;/cite&gt;
	&lt;li&gt;Sidney Resnick, &lt;cite&gt;A Probability Path&lt;/cite&gt;
	&lt;li&gt;A. Shiryaev, &lt;cite&gt;Probability Theory&lt;/cite&gt;
	&lt;li&gt;Stroock, &lt;cite&gt;Probability Theory: An Analytic View&lt;/cite&gt;
	&lt;li&gt;Paul Vitanyi, &quot;Randomness,&quot; &lt;a
href=&quot;http://arxiv.org/abs/math.PR/0110086&quot;&gt;math.PR/0110086&lt;/a&gt;
	&lt;/ul&gt;

&lt;ul&gt;To read, technical:
	&lt;li&gt;Sergio Albeverio and Song Liang, &quot;Asymptotic expansions for the
Laplace approximations of sums of Banach space-valued random variables&quot;, &lt;a
href=&quot;http://dx.doi.org/10%2E1214/009117904000001017&quot;&gt;&lt;cite&gt;Annals of
Probability&lt;/cite&gt; &lt;strong&gt;33&lt;/strong&gt; (2005): 300--336&lt;/a&gt; = &lt;a
href=&quot;http://arxiv.org/abs/math.PR/0503601&quot;&gt;math.PR/0503601&lt;/a&gt;
	&lt;li&gt;David J. Aldous and Antar Bandyopadhyay, &quot;A survey of max-type
recursive distributional equations&quot;, &lt;a
href=&quot;http://arxiv.org/abs/math.PR/0401388&quot;&gt;math.PR/0401388&lt;/a&gt; = &lt;a
href=&quot;http://dx.doi.org/10%2E1214/105051605000000142&quot;&gt;&lt;cite&gt;Annals of Applied
Probability&lt;/cite&gt; &lt;strong&gt;15&lt;/strong&gt; (2005): 1047--1110&lt;/a&gt;
	&lt;li&gt;David Balding, Pablo A. Ferrari, Ricardo Fraiman and Mariela Sued,
&quot;Limit theorems for sequences of random trees&quot;, &lt;a
href=&quot;http://arxiv.org/abs/math.PR/0406280&quot;&gt;math.PR/0406280&lt;/a&gt; [Abstract: &quot; We
consider a random tree and introduce a metric in the space of trees to define
the &quot;mean tree&quot; as the tree minimizing the average distance to the random
tree. When the resulting metric space is compact we show laws of large numbers
and central limit theorems for sequence of independent identically distributed
random trees. As application we propose tests to check if two samples of random
trees have the same law.&quot;  I wonder if the same technique could be applied to
other kinds of random graphs, e.g., random &lt;a
href=&quot;complex-networks.html&quot;&gt;scale-free networks&lt;/a&gt;?]
	&lt;li&gt;Patrick Billinglsey, &lt;cite&gt;Convergence of Probability Measures&lt;/cite&gt;
	&lt;li&gt;Sourav Chatterjee, &quot;A new method of normal approximation&quot;,
&lt;a href=&quot;http://arxiv.org/abs/math/0611213&quot;&gt;arxiv:math/0611213&lt;/a&gt;
	&lt;li&gt;Bernard Chazelle, &lt;Cite&gt;The Discrepency Method: Randomness and
Complexity&lt;/cite&gt;
	&lt;li&gt;Irene Crimaldi and Luca Pratelli, &quot;Two inequalities for conditional
expectations and convergence results for filters&quot;, &lt;a
href=&quot;http://dx.doi.org/10.1016/j.spl.2005.04.039&quot;&gt;&lt;cite&gt;Statistics and
Probability Letters&lt;/cite&gt; &lt;strong&gt;74&lt;/strong&gt; (2005): 151--162&lt;/a&gt;
	&lt;li&gt;Victor De La Pena and Evarist Gine, &lt;cite&gt;Decoupling: From
Dependence to Independence&lt;/cite&gt;
	&lt;li&gt;Persi Diaconis and Svante Janson, &quot;Graph limits and exchangeable
random graphs&quot;, &lt;a href=&quot;http://arxiv.org/abs/0712.2749&quot;&gt;arxiv:0712.2749&lt;/a&gt;
	&lt;li&gt;Peter G&amp;aacute;cs, &quot;Uniform test of algorithmic randomness over a
general space&quot;, &lt;a
href=&quot;http://dx.doi.org/10.1016/j.tcs.2005.03.054&quot;&gt;&lt;cite&gt;Theoretical Computer
Science&lt;/cite&gt; &lt;strong&gt;341&lt;/strong&gt; (2005): 91--137&lt;/a&gt; [&quot;The algorithmic
theory of randomness is well developed when the underlying space is the set of
finite or infinite sequences and the underlying probability distribution is the
uniform distribution or a computable distribution. These restrictions seem
artificial. Some progress has been made to extend the theory to arbitrary
Bernoulli distributions (by Martin-Lof) and to arbitrary distributions (by
Levin). We recall the main ideas and problems of Levin's theory, and report
further progress in the same framework....&quot;]
	&lt;li&gt;Janos Galambos and Italo Simonelli, &lt;cite&gt;Bonferroni-type
Inequalities with Applications&lt;/cite&gt;
	&lt;li&gt;J. A. Gonzalez, L. I. Reyes, J. J. Suarez, L. E. Guerrero, and
G. Gutierrez, &quot;A mechanism for randomness,&quot; &lt;a
href=&quot;http://arxiv.org/abs/nlin.CD/0202022&quot;&gt;nlin.CD/0202022&lt;/a&gt; [Color me
skeptical, from the abstract]
	&lt;li&gt;Oliver Johnson and Andrew Barron, &quot;Fisher Information inequalities
and the Central Limit Theorem,&quot;
&lt;a href=&quot;http://arxiv.org/abs/math.PR/0111020&quot;&gt;math.PR/0111020&lt;/a&gt;
	&lt;li&gt;Oliver Johnson and Richard Samworth, &quot;Central Limit Theorem and
convergence to stable laws in Mallows distance&quot;, &lt;a
href=&quot;http://arxiv.org/abs/math.PR/0406218&quot;&gt;math.PR/0406218&lt;/a&gt;
	&lt;li&gt;Mark Kac, &lt;cite&gt;Selected Papers&lt;/cite&gt;
	&lt;li&gt;Olav Kallenberg, &lt;cite&gt;Probabilitic Symmetries and Invariance
Principles&lt;/cite&gt; [&quot;This is the first comprehensive treatment of the three
basic symmetries of probability theory - contractability, exchangeability, and
rotatability - defined as invariance in distribution under contractions,
permutations, and
rotations.&quot;  &lt;a
href=&quot;http://www.springeronline.com/sgw/cda/frontpage/0,11855,5-0-22-44478323-0,00.html&quot;&gt;Blurb&lt;/a&gt;]
	&lt;li&gt;National Research Council (USA), &lt;cite&gt;Probability and
Algorithms&lt;/cite&gt; [&lt;a
href=&quot;http://www.nap.edu/books/0309047765/html/&quot;&gt;online&lt;/a&gt;]
	&lt;li&gt;Victor H. de la Pena, Tze Leung Lai and Qi-Man Shan, &lt;cite&gt;Self-Normalized Processes: Limit Theory and Statistical Applications&lt;/cite&gt; [&lt;a href=&quot;http://www.springer.com/math/probability/book/978-3-540-85635-1&quot;&gt;blurb&lt;/a&gt;]
	&lt;li&gt;Revesz, &lt;cite&gt;The Laws of Large Numbers&lt;/cite&gt;
	&lt;li&gt;R. Schweizer and A. Sklar, &lt;cite&gt;Probabilistic Metric Spaces&lt;/cite&gt;
	&lt;li&gt;Glenn Shafer and Vladimir Vovk, &lt;cite&gt;Probability and Finance: It's
Only a Game!&lt;/cite&gt; [Yet Another Foundation of Probability, this time from
game-theory.]
	&lt;li&gt;Christopher G. Small and D. L. McLeish, &lt;cite&gt;Hilbert Space
Methods in Probability and Statistical Inference&lt;/cite&gt;
	&lt;li&gt;Jerzy Tyszkiewicz, Arthur Ramer and Achim Hoffmann, &quot;The Temporal
Calculus of Conditional Objects and Conditional Events,&quot; &lt;a
href=&quot;http://arxiv.org/abs/cs.AI/0110003&quot;&gt;cs.AI/0110003&lt;/a&gt;
	&lt;li&gt;Jerzy Tyszkiewicz, Achim Hoffmann and Arthur Ramer, &quot;Embedding
Conditional Event Algebras into Temporal Calculus of Conditionals,&quot; &lt;a
href=&quot;http://arxiv.org/abs/cs.AI/0110004&quot;&gt;cs.AI/0110004&lt;/a&gt;
	&lt;/ul&gt;
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