GEORGIOS BEKAS
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Engineering Optimization specialist
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DURCHSCHNITTLICHE ANZAHL DER LIKES
Solve all the problems in CUP Challenge
Awarded to GEORGIOS BEKAS on 20 Jan 2018
Comment on a problem or solution
Awarded to GEORGIOS BEKAS on 08 Jan 2018
Accept 5 answers given by other contributors
Awarded to GEORGIOS BEKAS on 03 Jan 2018
Like a problem or solution
Awarded to GEORGIOS BEKAS on 31 Dec 2017
Solve a problem for the first time
Awarded to GEORGIOS BEKAS on 22 Oct 2017
Feeds
Frage
Genetic algorithm objective function
I want to create an objective function that will be the sum of a series of 100 variables that will have a range of values betwee...
etwa 2 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
Turning a sequence of operations into a function
I have a sequence of operations that attempts to calculate, whether there is an increase or a decrease in the next step, in comp...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Undefined function or method 'mrdivide'
I wrote the following code which is automatically generated by the ntstool of MATLAB for the training of a NARX neural network. ...
mehr als 3 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
Indexing problem. I want to insert a vector into another vector with a loop.
I have a matrix A, whose initial form is as follows: A = [5 4 3] By using the following expression: A = [A,zeros(1, 12)]; ...
fast 4 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Interpolation problem. How can I generalize for a bigger number of intervals?
Imagine that I want to express in a way that I will describe below, a number that falls into a possible range of values. E.g. t...
fast 4 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
Interpolation code. How can I deal with a strange problem.
Imagine that I want to express in a way that I will describe below, a number that falls into a possible range of values. E.g. t...
fast 4 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Creating two row matrices out of any initial matrix that would contain each element inside the initial matrix and the one in the previous column.
I am trying to create two row matices out of an initial matrix. The two row matrices need to contain each element inside the ini...
mehr als 4 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
Problem with my code?
I wrote the following code that is based on reading two csv files that I include. clc clear a = dlmread ('gb.csv') b = d...
mehr als 4 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
Reshaping an 1x365 matrix with daily observations within a year
I have a matrix with observations and its size is 1x365. It has to do with daily observations starting from the day Sunday, whic...
etwa 5 Jahre vor | 1 Antwort | 0
1
AntwortGelöst
Divisible by 9
Pursuant to the <http://www.mathworks.com/matlabcentral/cody/problems/42404-divisible-by-2 first problem> in this series, this o...
mehr als 5 Jahre vor
Gelöst
Divisible by 3
Pursuant to the <http://www.mathworks.com/matlabcentral/cody/problems/42404-divisible-by-2 first problem> in this series, this o...
mehr als 5 Jahre vor
Frage
Can you find the error in this code that aims to sum the digits of a string?
I wrote this code in order to sum the digits of any string, and to also create a loop that stops the summing process when the le...
mehr als 5 Jahre vor | 2 Antworten | 0
2
AntwortenGelöst
Determine the length of a string of characters
Determine the length of a string of characters
mehr als 5 Jahre vor
Gelöst
Accessing elements on the diagonal
Access the diagonal elements of a matrix without 'diag' function
mehr als 5 Jahre vor
Gelöst
Sum the 'edge' values of a matrix
Sum the 'edge' values of an input matrix (the values along the perimeter). Example [1 2 3 4 5 6 7 8 9] Output = ...
mehr als 5 Jahre vor
Gelöst
MATCH THE STRINGS (2 CHAR) very easy
Match the given string based on first two characters on each string. For example A='harsa'; b='harish'; result '1' ...
mehr als 5 Jahre vor
Gelöst
Kaprekar Steps
6174 is the <http://en.wikipedia.org/wiki/6174_%28number%29 Kaprekar constant>. All natural numbers less than 10,000 (except som...
mehr als 5 Jahre vor
Gelöst
Duplicates
Write a function that accepts a cell array of strings and returns another cell array of strings *with only the duplicates* retai...
mehr als 5 Jahre vor
Frage
Reading a dat file; there is a bug
I have written the following code in order for MATLAB to read a dat file that I attach. There is a bug in line 20, despite the ...
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Logic behind triple loops
Hi I am new in triple loops and trying to find a way to automate the generation of these numbers: 11000 11001 21001 ...
mehr als 5 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
BAYESIAN OPTIMIZATION OF A NEURAL NETWORK
I wrote the following code to optimize the architecture of a neural network via Bayesian optimization. What's wrong with it? ...
mehr als 5 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
Error in creating a function
What's wrong in the following expression? ObjectiveFunction = @x() sim(net, x')
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
USING A NEURAL NETWORK AS AN OBJECTIVE FUNCTION INSIDE A GENETIC ALGORITHM
I trained a neural network with the name 'net', after that I am using a genetic algorithm to do some optimization. After using ...
mehr als 5 Jahre vor | 0 Antworten | 1
0
AntwortenGelöst
find the surface area of a cube
given cube side length x, find the surface area of the cube, set it equal to y
fast 6 Jahre vor
Gelöst
Matlab Basics - Create a row vector
Write a Matlab script to create a row vector of 10 consecutive numbers x = [1 2 3 4 5 6 7 8 9 10]
fast 6 Jahre vor
Gelöst
Create a square matrix of multiples
Given an input, N, output a matrix N x N with each row containing multiples of the first element of each row. This also applies...
fast 6 Jahre vor
Gelöst
CONVERT TAN TO SIN
In a right angle triangle ABC given the tan(A) then find sin(A) For example tan(A)=3/4 then sin(A)=3/5
fast 6 Jahre vor
Gelöst
Hard limit function
Classify x data as if x>=0 then y=1 if x<0 then y=0 Example x = [ -2 -1 0 1 2] y = [ 0 0 1 1 1]
fast 6 Jahre vor
Gelöst
Replace multiples of 5 with NaN
It is required to replace all values in a vector that are multiples of 5 with NaN. Example: input: x = [1 2 5 12 10 7] ...
fast 6 Jahre vor
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