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Alexander


Last seen: 2 months ago |  Active since 2014

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Question


Meaning of step, epoch and episode in RL?
RL Designer App. I want to train an agent (PPO). I see that number of epochs in it is 3. In train options there are also epis...

2 years ago | 0 answers | 0

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answers

Question


where is my home license?
mathworks site does not show my home license. What happens?

2 years ago | 0 answers | 0

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answers

Question


How to realize linear function (filter?) with saturation?
Initial signal equals ones, then minus ones (it can switch many times): u = [ones(15,1);-ones(5,1)]; If u==1 then output shoul...

3 years ago | 1 answer | 1

1

answer

Question


How to divide ROI label?
How to divide ROI label into two parts after auto recognition?

3 years ago | 0 answers | 1

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answers

Answered
Where is Speech2Text in AudioLabeler?
I should run setup.m file in speech2text folder.

3 years ago | 0

| accepted

Question


Where is Speech2Text in AudioLabeler?
In AudioLabeler I don't see Speech2Text AddOn though I've installed it. Why? ('one-two-three...' audio file recognition example)...

3 years ago | 1 answer | 0

1

answer

Question


How to use GA in Reinforcement Learning instead of Gradient descent?
I made my Environment (reset and step functions) but I want to use Genetic algorithm for NN tuning instead of gradient descent. ...

4 years ago | 1 answer | 0

1

answer

Question


Why Import Tool can't read csv files?
Previous versions can read csv files. But the new ones show the error "can't read utf16-LE". But the first line of data is read ...

6 years ago | 0 answers | 0

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answers

Question


How divide states (run and stop, normal and alarms, summer and winter) in Stateflow for ventilation?
What is the best Stateflow structure (states) for ventilation system? It can be stopped or run. Run automatically or manually. T...

7 years ago | 1 answer | 0

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answer

Question


can Matlab use lighting protocols: DALI, DMX?
I study using MatLab with Arduino. For lighting control there are such protocols as DALI and DMX. I saw in Arduino SPI, I2C, UAR...

8 years ago | 0 answers | 0

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answers

Question


Find a formula for the first harmonic
The procedure. We have a time-series (N last terms) x(1:N). Find Discrete Fourier Transfom h(1:N) = DFT(x). Find the Inverse DFT...

9 years ago | 0 answers | 0

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answers

Solved


Swap the input arguments
Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...

9 years ago

Solved


Pizza value using expression with parentheses
Pizza prices are typically listed by diameter, rather than the more relevant feature of area. Compute a pizza's value (cost per ...

9 years ago

Solved


Too mean-spirited
Find the mean of each consecutive pair of numbers in the input row vector. For example, x=[1 2 3] ----> y = [1.5 2.5] x=[1...

9 years ago

Solved


Create a row array using double colon operator
Create a row array from 9 to 1, using the double colon operator.

9 years ago

Solved


Distance walked 1D
Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...

9 years ago

Solved


Fahrenheit to Celsius using multiple statements
Given a Fahrenheit value F, convert to a Celsius value C. While the equation is C = 5/9 * (F - 32), as an exercise use two state...

9 years ago

Solved


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

9 years ago

Solved


Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

9 years ago

Solved


Simple equation: Annual salary
Given an hourly wage, compute an annual salary by multiplying the wage times 40 and times 50, because salary = wage x 40 hours/w...

9 years ago

Solved


Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

9 years ago

Solved


Who Has the Most Change?
You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

9 years ago

Solved


Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

9 years ago

Solved


Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

9 years ago

Solved


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.

9 years ago

Solved


Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

9 years ago

Solved


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...

9 years ago

Solved


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...

9 years ago

Solved


Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

9 years ago

Solved


Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

9 years ago

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