Ghazaleh Baghbani

10 Questions 14 Answers 0 Followers

Questions related from Ghazaleh Baghbani

How to unstandardize predictive data in R?

I used nnet package in R to train the neural network and make prediction. At first, because the data were large, i used the formula (x-xmin)/(xmax-xmin) to standardize them in range of 0 to 1....

19 March 2016 7,110 2 View

How do I use bayesian network to find neural network parameters?

hi, I want to use bayesian network to determine the neural network parameters such as weights, number of hidden neurons ,.... .(simultaneously) I know that there are bayesian neural net approach...

10 July 2015 9,048 1 View

What is the difference between a Bayesian network and Bayesian neural network?

Can anybody explain to me the difference between Bayesian networks and Bayesian neural networks? Thanks

19 June 2015 2,837 7 View

How can I change standardized predicted values of neural network into non-standard values?

I used nnet package in R to train the neural network and make prediction. At first, because the output values were large, i used the formula (x-xmin)/(xmax-xmin) to standardize them in range of...

04 June 2015 241 6 View

How can factors considered for neural network in R?

I have 3 input variables and and 1 output variable. I should define factor in 3 levels for the output variable and use the neural network to predict the output variable in 3 levels. I mean that I...

20 April 2015 2,081 6 View

How can I predict the output variable( in 3 levels) in neural network?

I clustered some kinds of flowers into 3 groups. E.g cluster 1 has 2 kinds of flowers,cluster 2 has 15 kinds of flowers and the last cluster has 18 kinds of flowers. Now i want to predict the...

10 April 2015 8,687 3 View

How can I perform cross validation in neural network?

I have 62 data with 1 output and 7 input variables. i split the data into 40 data for training/validation and 22 data for testing the neural network. the R square is so small ( negative) and the...

03 April 2015 182 8 View

How can I select the input variables in neural network?

I have 7 variables as inputs (4 of them are dummy) and 1 variable as output. I would like to forecast the output variable with neural network. Is there any way to choose the most relevant...

02 April 2015 8,575 4 View

Can anyone help regarding the results in neural network prediction?

I used nnet function in R to train the neural network.but when i want to predict the output variable in test data, it returns all 1? why it happens? Thanks

30 March 2015 1,482 10 View

How can I evaluate clusters in clustering mixed data?

I want to do clustering and evaluating the clusters.I have mixture of nominal and discrete numerical data. I did clustering and now i want to use some useful indices to choose the best number of...

26 March 2015 8,766 10 View