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freebil


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Last seen: 6 Monate vor |  Aktiv seit 2012

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Gaussian Mixture pdf plot
Hello. I have a gaussian with probability 0.2 and (m1,sigma1), another with probability 0.3 and (m2,sigma2) and one with probabi...

etwa 8 Jahre vor | 3 Antworten | 0

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Gelöst


Circle area using pi
Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.

etwa 8 Jahre vor

Gelöst


Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

etwa 8 Jahre vor

Gelöst


Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

etwa 8 Jahre vor

Gelöst


Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

etwa 8 Jahre vor

Gelöst


Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

etwa 8 Jahre vor

Gelöst


Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

etwa 8 Jahre vor

Gelöst


Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

etwa 8 Jahre vor

Gelöst


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

etwa 8 Jahre vor

Beantwortet
performance analysis of LDPC code
See my blog post with matlab code <https://freebil.com/?p=40>

etwa 8 Jahre vor | 0

Beantwortet
Hi,,is there anyone who could help in implementing the DECODER of LDPC code?
See my blog post with matlab code <https://freebil.com/?p=40>

etwa 8 Jahre vor | 0

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Beantwortet
Hi, I am trying to make a parity check matrix from non-systematic to systematic. Hence I am attaching my code below. Somewhat it is correct, but there are some problems. It would be really great if someone could help me in this. Thanks
You have to do gauss jordan elimination to convert a parity check matrix to upper triangular form. For example, H=[1 1 0 1 ...

etwa 8 Jahre vor | 0

Beantwortet
need help with a for loop
In the second line of the for loop, b is 3x1 and (A*x(a)) is 3x3. So, you cant sum these. For summing, they must have identical ...

etwa 8 Jahre vor | 0

Gelöst


Add two numbers
Given a and b, return the sum a+b in c.

etwa 8 Jahre vor

Gelöst


Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

etwa 8 Jahre vor

Gelöst


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

etwa 8 Jahre vor

Gelöst


Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

etwa 8 Jahre vor

Frage


create sparse upper triangular matrix with only 1s
Hello. I want to create a sparse upper triangular with size 10^5x10^5. Is it possible? m = triu(ones(10^5); and m = ...

etwa 8 Jahre vor | 1 Antwort | 0

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Generator matrix for repetition coding
Hello. I would like to be able to make generator repetition matrices for given vectors. If I have the vector u = [1 0 0 1]...

etwa 8 Jahre vor | 1 Antwort | 0

1

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Frage


The variable g in a parfor cannot be classified..
Can anyone help me with this? parfor j=1:N z1r=normrnd(Z1(1),Z1(2)); %Random sample from distribution of...

fast 10 Jahre vor | 1 Antwort | 0

1

Antwort

Beantwortet
I cannot install Matlab 2014a on OS X Yosemite 10.10 public beta
Try this but i dont know if it will work.. 1- find Matlab application file under Applications folder 2- Right (Control) clic...

fast 10 Jahre vor | 0

Frage


Osx Yosemite 10.10
Public beta of OS X yosemite is out now. I installed this and now matlab doesn't work. You can’t use this version of the app...

fast 10 Jahre vor | 3 Antworten | 1

3

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create big matrix with only 0s and 1s
I want to run the following n = 10^6; m = n/2; H = sparse(m,n); parfor jj=1:n pos = sample(cumulative); H(...

mehr als 10 Jahre vor | 1 Antwort | 0

1

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Frage


problem with parfor and big sparse matrix
I have the following code but I have to run it for n>10^6. For n=10^5 the memory is over. I have 16gb. Is there any efficient wa...

mehr als 10 Jahre vor | 0 Antworten | 0

0

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convert a double array to something like logical
Hello. I want to concert every 1-> 1 0 0 0 0 0 0 2-> 0 1 0 0 0 0 0 3-> 0 0 1 0 0 0 0 4-> 0 0 0 1 0 0 0 5-> 0 0 0 ...

fast 11 Jahre vor | 3 Antworten | 0

3

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Floating point to fixed point
Hello. I want to convert some floating point values to fixed point with the best precision i can have for 20 bits. My range of v...

fast 11 Jahre vor | 1 Antwort | 0

1

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Frage


problem with parfor loop
Is it possible to parfor this? for iter=1:50 for i=1:100 x(:,i)= rand(3,1) end end

fast 11 Jahre vor | 1 Antwort | 0

1

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Frage


count rectangles on big matrices
Hello. I have very large sparse matrices with zero and one only and i have to count all the rectangles that there are in it. Fo...

fast 11 Jahre vor | 2 Antworten | 0

2

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Beantwortet
problem with parfor loop
Thanks for your answer. Actually, the code is for edge = 1:sum(num_of_edges) var_node = edge_2_var_node(edg...

fast 11 Jahre vor | 0

Frage


problem with parfor loop
I have the following code parfor edge = 1:1000 var_node = edge_2_var_node(edge, num_of_variable_nodes) ...

fast 11 Jahre vor | 2 Antworten | 0

2

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