Question

generate ARCH data set
Hi, I need to create an ARCH(1) data vector (1000,1). Parameters are alpha0=0.1 and alpha1 = 0.4. errors follow a standard no...

11 years ago | 0 answers | 0

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answers

Question

least absolute deviation matlab
Hi, Is the a way to do parameter estimation using Least Absolute deviation with constraints in matlab. If so, please let ...

11 years ago | 1 answer | 0

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answer

Question

summary statistics in matlab
Hi, Can someone please let me know if there's a command in matlab to get more than one summary statistics in one command like...

11 years ago | 2 answers | 0

2

answers

Question

write matlab output to minitab
Hello, Can someone please let me know if there's a code that I can use to export a data set I have generated in matlab to MIN...

11 years ago | 0 answers | 0

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answers

Question

integrate definite integrals matlab
Hi What is wrong with the following code please? thanks int((5*x)/((x^3-(7*x))^4), x=-1..1)

11 years ago | 1 answer | 0

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answer

Question

constrained mle estimation of Arma
Hi, Can someone please let me know how to estimates arma models using mle with the constraint that parameter estimates are po...

11 years ago | 0 answers | 0

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answers

Question

round off in matlab
Hi, I am running a large simulation in matlab. I have noticed that matlab rounds off after 4 decimal places and this affects...

11 years ago | 1 answer | 0

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answer

Question

selecting values of a vector
Hi, Is there a way to pick the element of a vector which is closest to 1. Let's say A = [ 113; 14; 6; 43; 9; 2 ] I wa...

11 years ago | 1 answer | 0

1

answer

Question

stopped in debugger question
Hi, I was running a program with a dbstop if NAN/inf line. The program ran and gave results. however, at the bottom where ...

11 years ago | 1 answer | 1

1

answer

Question

compute aic in matlab
Hi , Anybody know how to calculate the CORRECTED AIC in matlab? I have a code which calculates the aic but I need to find ...

11 years ago | 0 answers | 0

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answers

Question

LS Estimates aren't accurate
Hello Can you please help me correct this? I am not getting the correct estimates from the following code.

11 years ago | 1 answer | 0

1

answer

Question

delete rows with a special number
Hi , can someone please help me to delete the entire rows with 99? A= [ 0.0125 0.9025 99.0000 99.0000 ...

11 years ago | 2 answers | 0

2

answers

Question

using a seed for normal random number
Hi, I am using the following code in a simulation. I need to use a seed to generate the same random numbers. can you please h...

11 years ago | 1 answer | 0

1

answer

Question

writing fmincon funtion in matlab
Hi, Can someone please elp me to do the following optimization problem unsin FMINCON . I have a hard time writng the function th...

11 years ago | 2 answers | 0

2

answers

Question

sum of a series
Hi, Can someone please help me to write the following code using a summation for i = 1:1000 v(i) =y(i) - a0- a1...

11 years ago | 2 answers | 0

2

answers

Question

delete rows of a matrix
I have a vector A = [ 1 0 2; 0 3 4; 3 5 0; 0 0 0; 1 1 1 ] I need to delete the ro...

11 years ago | 2 answers | 0

2

answers

Question

Matrix is singular, RCOND=NAN
I am using the following code in a simulation and get a warning message. Is there any way to correct it? lb = 0.00...

11 years ago | 2 answers | 0

2

answers

Question

Please expalin the error
I am using the following code in a simulation program x= lsqlin(C,d,A,b,Aeq,beq,lb,ub,x0,options) When I use lb = [0.0...

11 years ago | 1 answer | 0

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Question

Please help with the Inequality
In the following code: x = lsqlin(C,d,A,b,Aeq,beq,lb,ub,x0,options) lb and ub are such that lb<=x<=ub. Is the...

11 years ago | 1 answer | 0

1

answer

Question

delete certain elements in a matrix
Is there any way to delete certain rows(with a pattern) in a matrix like to delete rows 1,6,11,21,26,..... using a loop T...

11 years ago | 3 answers | 0

3

answers

Question

How to deal with this
Hi, I have a large matrix that is generated in a simulation. I have noticed that some of the columns are NAN (entire colum...

11 years ago | 1 answer | 0

1

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Question

please help with the error
Can someone please help with the error? clc; clear; warning off; runs =100; p=1; ...

11 years ago | 2 answers | 0

2

answers

Question

assign subscrips to vectors
I have 5 vectors yt1, yt2, yt3,yt4,yt5 of size 200*1. I need to assign subscripts so that I can call the vector I want in sid...

11 years ago | 3 answers | 0

3

answers

Question

symbolic expantion in matlab
hi, I need to expand [1- (a1+b1)B ] / (1-b1B) and get a polynomial. Can someone help me with this please? Thanks.

11 years ago | 1 answer | 0

1

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Question

Variable calculations with matlab
Hi, is it possible to get variable expressions in matlab? For example: From >> y = (a+b)^2 Can I get >> ...

11 years ago | 1 answer | 0

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Question

sum of coefficients less than 1
Can someone please modify the following code so that it has a constraint that the sum of ar1 and ar2 is less than one. Thanks...

11 years ago | 1 answer | 0

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Question

Please expalin the error
Hi , for the data set y, I need to fit an ar model and calculate the best order using aic. I used the following code to ...

11 years ago | 1 answer | 0

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Question

find ar oder using aic
I have a data set y. I need to find the best ar order using AIC. Can some one help me with the code please? thanks

11 years ago | 1 answer | 0

1

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Question

Can you help me fix this?
*Im using the following function* function beta = arima(y, p, q, C, sigma) if nargin < 4 C = 0; end if ...

11 years ago | 1 answer | 0

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Question

Remove zeros from matrix
Please help me trim the zeros off the top the the X matrix. Thanks function Beta = nnARMAParam(y, p, q, C, sigma) if na...

11 years ago | 1 answer | 0

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