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Paulo Cerqueira


Last seen: 10 maanden ago
16 total contributions since 2019

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Answered
Sparse solver for non-square regressor matrix.
If anyone's interested, "SuiteSparseQR: Multifrontal Multithreaded Rank-Revealing Sparse QR Factorization" by Timothy Davis deta...

10 maanden ago | 0

| accepted

Question


Sparse solver for non-square regressor matrix.
When using the backslash operator to solve the least squares problem for , where is highly sparse and non-square, MATLAB seems...

11 maanden ago | 1 answer | 0

1

answer

Solved


Replace 0 indices in array with 1's
Take a incoming vector, and replace 0's with ones

ongeveer een jaar ago

Solved


write a function to calculate the snr after quantizing the signal in dB
osig : original signal qsig : quantized signal qerror : quantization error HINT: snr = 10×log10(sum(osig × osig)/sum...

ongeveer een jaar ago

Solved


Multiply by 3
Given the variable x as your input, multiply it by three and put the result in y.

ongeveer een jaar ago

Solved


Free passes for everyone!
_Simply return the name of the coolest numerical computation software ever_ *Extra reward* (get a _freepass_): Once a mont...

ongeveer een jaar ago

Solved


Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.
Submit your answer to this problem a multiple of 5 seconds after the hour. Your answer is irrelevant; the only thing that matte...

ongeveer een jaar ago

Solved


length of a vector
Find twice the length of a given vector.

ongeveer een jaar ago

Solved


square root
Find the square root (y) of an input (x).

ongeveer een jaar ago

Solved


easy problem
Find the last element of the array

ongeveer een jaar ago

Solved


Find the dimensions of a matrix
Just find the number of columns of the given matrix. Example x = [1 2 3 4 5 6] y = 2

ongeveer een jaar ago

Solved


dễ dàng
cho 2 số. tính tích của chúng

ongeveer een jaar ago

Solved


Chào các bạn.
Cho 3 số. Tính tổng của chúng

ongeveer een jaar ago

Solved


Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

ongeveer een jaar ago

Solved


Multiply 2 numbers
Very easy, you just have to multiply 2 numbers but you cannot use the following signs (*, /, - ,^) ,mtimes , times, cross, pro...

ongeveer een jaar ago

Solved


Find the nearest integer
Given a vector of integers and a real number find the closest integer. EX: >> a = [2 4 5 6 8 10]; >> b = 4.6; >> nea...

ongeveer een jaar ago