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stelios loizidis


Last seen: 7 Tage ago
18 total contributions since 2019

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Question


How the results are stored in a .xlsx file?
Hello, I have the following problem: I want to calculate the RMSE. More specifically I run the algorithm five times and then ad...

etwa ein Monat ago | 1 answer | 0

1

answer

Question


Save data from for-loop and their use
Hello, I have the following problems. I have matrices: SatTrDatax_Norm (4X200) and SatTrDatay_Norm (4x50). I want to apply wave...

etwa 2 Monate ago | 1 answer | 0

1

answer

Question


How to run a code several times using a for loop
Hello, I have the following problem: I want to run the following code for 50 interations, and saving the values of matrix A1, B...

3 Monate ago | 2 answers | 0

2

answers

Question


Select the correct data from matrix
Hello. I have the following problem: For a product I predict the prices it will have the next day (24 prices). I use 5 models to...

4 Monate ago | 1 answer | 0

1

answer

Question


Data comparison and selection the smallest
Hello. I have a matrix A which has size of 24X5. I want each row in matrix A to be selected the smallest and stored in matrix B....

4 Monate ago | 2 answers | 0

2

answers

Question


Create a matrix through replacement, from another matrix
Hello. I have a matrix A (5X5) and I want to create a matrix B (of the same size as A) and its values come from matrix A. Also, ...

4 Monate ago | 1 answer | 0

1

answer

Question


Create a matrix with values in a specific position from another matrix
Hello, I have a matrix with hourly prices for a product. That, is 24 prices for one day. Also, these prices are for one month. I...

4 Monate ago | 1 answer | 0

1

answer

Question


Forecasting Prices with Learning Machine
Hello. I am new to Learning machine development. In short, I want to do the following: I have some product prices for 216 and I ...

5 Monate ago | 0 answers | 0

0

answers

Question


Price forecasting using ARIMA Model
Hello, I have this theme: I want to forecast market prices using ARIMA models. For example I have ARIMA1(1,1,4), ARIMA2(0,1,1) ...

6 Monate ago | 1 answer | 0

1

answer

Question


Remove random columns from a big matrix?
Hello, I have this issue: I want to randomly remove 3000 columns from a big matrix with size 1600X8500. below I have a code I w...

etwa ein Jahr ago | 2 answers | 0

2

answers

Question


How will I reduce the time it takes to calculate data?
Hello. In an excel file I put some data and then I creared a big matrix (1200X2000) on Matlab based on this data. Then I took ...

etwa ein Jahr ago | 1 answer | 0

1

answer

Question


finding data from a big matrix
Hello, I have the followin question: I have a big matrix A (1140X837).With help of Matlab I calculated the following data [av ...

mehr als ein Jahr ago | 0 answers | 0

0

answers

Question


Calculate a matrix through a for loop
Hello, I have the following code to which I am trying to find variable B. Veriable B is a matrix that will include the data in ...

mehr als ein Jahr ago | 0 answers | 0

0

answers

Question


How do we create weighted average for a matrix?
Hello, I have a matrix e.g [ 5 3 3 1 3 4 5 2 5 0 0 0 3 4 5 2] For this matrix I have to make a weighted average fo...

mehr als ein Jahr ago | 0 answers | 0

0

answers

Question


Select random data from a matrix and replace it
Hello, I have the following problem: I have a matrix e.g 1 0 1 0 1 1 1 1 0 0 1 1 1 1 1 1 1 0 0 1 and I try to do this: Whe...

mehr als ein Jahr ago | 3 answers | 0

3

answers

Question


Data Processing of a Matrix
Hellow, I have stuck to a point of the code I am writing. In summary, there is a matrix (ReviewMatrix) that carries data from a...

mehr als ein Jahr ago | 0 answers | 0

0

answers

Question


How do I create a new matrix using other matrix data?
Hellow, The following code reads as follows: First, a matrix is imported from the reviewMatrix.mat file. ReviewMatrix ia a matr...

mehr als ein Jahr ago | 0 answers | 0

0

answers

Question


Excel file with three columns and compare the data
Hellow, I have an excel file with three columns (visitors,lacation,score). I want to find out which visitors went to the same l...

mehr als ein Jahr ago | 1 answer | 0

1

answer