Giuseppe D'Amico

Last seen: environ 4 ans il y a | Actif depuis 2020

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Question

divide a matrix based on the presence of a coefficient
Hi everyone, I need a hand. I have 87600 x 4 matrices where, in the fourth column, there is a value that differentiates between...

plus de 4 ans il y a | 2 réponses | 0

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Question

How to calculate MAPE for type double
I have to vector of type double; target_2019 and output_2019. How can i calculate MAPE?

presque 5 ans il y a | 1 réponse | 0

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Question

How to remove elements from two arrays when one of them has a zero
Hi everyone, I'll explain my problem. I have two arrays of the same length which are called respectively: target_2019 and outpu...

presque 5 ans il y a | 1 réponse | 0

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Question

move in a 4-axis chart
I made the following graph with 4 axes, the problem is that if I try to move by zooming in on the graph only two axes change at ...

presque 5 ans il y a | 1 réponse | 0

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Question

how to create a chart with two x axes, one of which with month / day
x1 = linspace(0,17508,17508); plot(x1,target_2019,x1,output_2019) xlabel("quarter hour") ylabel("Reactive Power") title("Ser...

presque 5 ans il y a | 1 réponse | 0

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Question

How to see the number of parameters and effective parameters on a neural network trained with trainbr?
Hi everyone, I'm training TDNN neural networks for reactive energy prediction. I have trained several networks and have found th...

presque 5 ans il y a | 1 réponse | 0

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Question

HELP, how can I improve the neural network?
Hi everyone, I really need help from someone who knows the subject and knows how to address me correctly. I am creating neural n...

presque 5 ans il y a | 1 réponse | 0

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Question

How can i fix this error?
Hi everyone, I'm using the following script which was made by another person for the prediction of various types of time series....

environ 5 ans il y a | 1 réponse | 0

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Réponse apportée
Forecast for Reactive Power (HELP PLEASE!!!)
ok thank you, I downloaded the experimental app, could you give me some advice on how to set the trainingoptions? is the "adam"...

environ 5 ans il y a | 0

Question

Forecast for Reactive Power (HELP PLEASE!!!)
hi everyone, I'm new and I've been working with neural networks for a few months. In particular, the work I am doing is making a...

environ 5 ans il y a | 2 réponses | 0

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Question

Reuse a NARX neural network after it has been trained
Hello everyone, I have created a NARX neural network for the prediction of reactive power, giving it input temporal data and act...

environ 5 ans il y a | 1 réponse | 0

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Question

Data pre - processing for artificial Neural Network
Hi everyone, I have a question. I am using the advance scripts made by Matlab for the creation of neural networks (by neural net...

environ 5 ans il y a | 1 réponse | 0

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Question

transform data from hourly to quarter hourly
Hi everyone, I kindly ask you for help for a problem that I am facing, basically I have hourly data of active power produced by ...

environ 5 ans il y a | 1 réponse | 0

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Question

how to decrease the error autocorrelation of a neural network
Hi all, I'm building neural networks, whose task is the prediction of time series of reactive power knowing the active power. F...

environ 5 ans il y a | 1 réponse | 0

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Question

how to make my network more performing?
Hi everyone, I'm building a neural network for the prediction of the reactive power of an HV / MV substation knowing the reactiv...

environ 5 ans il y a | 1 réponse | 0

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Question

Why can't I use the mae error with the Levenber-Marquardt algorithm?
Hi, I'm training a neural network using a script I got using the matlab tool on neural networks.In particular I am using a timed...

environ 5 ans il y a | 1 réponse | 0

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Réponse apportée
why do I have an error on the length function?
can you give me theoretical information on autocorrelation? What are the lags?

environ 5 ans il y a | 0

Question

why do I have an error on the length function?
hi, I have a file of 70080 lines of which I want to obtain the autocorrelation graph, why do I get this error? I state that prev...

environ 5 ans il y a | 3 réponses | 0

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Question

how to convert double .mat file to a column of numbers on excel
Hi everyone, I have the following .mat file made up of data that I want to report in an excel column? how can i save this data i...

environ 5 ans il y a | 1 réponse | 0

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Question

how to manage the input data to a neural network (time series)
Hi everyone, I'm using the machine learning and deep learning toolbox to train neural networks for predicting time series. At t...

environ 5 ans il y a | 1 réponse | 0

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Question

doubt about student license
hi, I have a matlab student license which allows me to use all available toolboxes. I was wondering, is it possible to use this...

environ 5 ans il y a | 1 réponse | 0

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Question

make two curves similar as a parameter changes
Hello everyone, I have a question not exactly simple to ask you. I have an .xlsx file whose data I cannot upload as it is sensi...

environ 5 ans il y a | 1 réponse | 0

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Question

autocorrelation of time series
hi all, I'm trying to carry out the autocorrelation of a historical series of which here I insert a part of the starting file as...

environ 5 ans il y a | 1 réponse | 0

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Question

use of correlation analysis and neural networks for the prediction of reactive power knowing the active power
Hi everyone, I'm an engineering trainee taking my first steps in the field of statistics. What I have to do during my internshi...

environ 5 ans il y a | 1 réponse | 0

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Réponse apportée
create csv files by extracting data from a starting csv file
ok, I'll wait

environ 5 ans il y a | 0

Question

how to extract certain lines from a csv file
Hi everyone, I really need a hand. I have a csv file containing many lines which cannot be opened in excel. I would like to crea...

environ 5 ans il y a | 1 réponse | 0

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Question

create csv files by extracting data from a starting csv file
Hi everyone, I am writing to you as not being familiar with matlab I do not know the commands and I would need your help to crea...

environ 5 ans il y a | 3 réponses | 0

3

réponses