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multinom.m Multinomial distribution (small N , m ).

% MULTINOM file multinom.m Multinomial distribution % Version of 8/24/96% Multinomial distribution (small N, m) N = input('Enter the number of trials ');m = input('Enter the number of types '); p = input('Enter the type probabilities ');M = 1:m; T = zeros(m^N,N);for i = 1:N a = rowcopy(M,m^(i-1));a = a(:); a = colcopy(a,m^(N-i));T(:,N-i+1) = a(:); % All possible strings of the types endMT = zeros(m^N,m); for i = 1:mMT(:,i) = sum(T'==i)'; endclear T % To conserve memory disp('String frequencies for type k are in column matrix MT(:,k)')P = zeros(m^N,N); for i = 1:Na = rowcopy(p,m^(i-1)); a = a(:);a = colcopy(a,m^(N-i)); P(:,N-i+1) = a(:); % Strings of type probabilitiesend PS = prod(P'); % Probability of each stringclear P % To conserve memory disp('String probabilities are in row matrix PS')
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Some matching problems

Cardmatch.m Sampling to estimate the probability of one or more matches when one card is drawn from each of n d identical decks of c cards. The number n s of samples is specified.

% CARDMATCH file cardmatch.m Prob of matches in cards from identical decks % Version of 6/27/97% Estimates the probability of one or more matches % in drawing cards from nd decks of c cards each% Produces a supersample of size n = nd*ns, where % ns is the number of samples% Each sample is sorted, and then tested for differences % between adjacent elements. Matches are indicated by% zero differences between adjacent elements in sorted sample c = input('Enter the number c of cards in a deck ');nd = input('Enter the number nd of decks '); ns = input('Enter the number ns of sample runs ');X = 1:c; % Population values PX = (1/c)*ones(1,c); % Population probabilitiesN = nd*ns; % Length of supersample U = rand(1,N); % Matrix of n random numbersT = dquant(X,PX,U); % Supersample obtained with quantile function; % the function dquant determines quantile% function values of random number sequence U ex = sum(T)/N; % Sample averageEX = dot(X,PX); % Population mean vx = sum(T.^2)/N - ex^2; % Sample varianceVX = dot(X.^2,PX) - EX^2; % Population variance A = reshape(T,nd,ns); % Chops supersample into ns samples of size ndDS = diff(sort(A)); % Sorts each sample m = sum(DS==0)>0; % Differences between elements in each sample % Zero difference iff there is a matchpm = sum(m)/ns; % Fraction of samples with one or more matches Pm = 1 - comb(c,nd)*gamma(nd + 1)/c^(nd); % Theoretical probability of matchdisp('The sample is in column vector T') % Displays of results disp(['Sample average ex = ', num2str(ex),]) disp(['Population mean E(X) = ',num2str(EX),]) disp(['Sample variance vx = ',num2str(vx),]) disp(['Population variance V(X) = ',num2str(VX),]) disp(['Fraction of samples with one or more matches pm = ', num2str(pm),]) disp(['Probability of one or more matches in a sample Pm = ', num2str(Pm),])
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Questions & Answers

what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
How can I make nanorobot?
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
how can I make nanorobot?
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
A fair die is tossed 180 times. Find the probability P that the face 6 will appear between 29 and 32 times inclusive
Samson Reply

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Source:  OpenStax, Applied probability. OpenStax CNX. Aug 31, 2009 Download for free at http://cnx.org/content/col10708/1.6
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