Manas Ranjan Prusty

11 Questions 10 Answers 0 Followers

Questions related from Manas Ranjan Prusty

What is the value of the area under the roc curve (AUC) to conclude that a classifier is excellent?

The AUC value lies between 0.5 to 1 where 0.5 denotes a bad classifer and 1 denotes an excellent classifier. Is there any quantitative value for the AUC in order to segregate the quality of a...

20 May 2015 8,372 13 View

How can I find the Receiver Output Characteristics (ROC) and area under roc curve (AUC) for multi-class classification using MATLAB?

Friends, I am stuck up with finding the AUC for multi class classification. perfcurve command in matlab is documented to be used for binary classification. SO now I am not able to find a way to...

13 May 2015 6,076 2 View

What is the relation between number of input variables, number of neurons in a single hidden layer and a single output in artificial neural network?

Does the inputs and the neurons in a single hidden layer have any relation with the multiclass single output. For example, I have labels for a multiclass output ranging from 1-9 along with 3 input...

06 April 2015 2,371 7 View

What does ten times ten-fold cross validation of data set mean and its importance?

It is said that we should go for a ten times ten-fold cross validation. What does this mean and how is this done? What is the actual need of doing so?

07 January 2015 3,959 8 View

How can I analyse some datasets using svm or neural nets, is it advisable to always write ones own code or are packages also good?

In-built packages are available in MATLAB for support vector machine and neural networks implementation. How can I analyze and test data sets? Can I use these packages or do I have to write...

07 January 2015 4,440 7 View

What is the maximum number of variables that can be handled by fuzzy inference system ?

Is there any exact number of variables that can be handled properly (rule base and membership functions) as input variables to a fuzzy inference system. I have been able to handle maximum 4 input...

10 November 2014 1,200 3 View

How to classify different trend of events happening online based on the database of the trends previously used for training?

I would like to explain this question with an example. It is bit lengthy but please bear with me. Let say, I have 3 events and each have a specific trend of time dependent data for a particular...

28 October 2014 2,416 1 View

What are the techniques used to transform a data to a higher dimension?

I want to classify some time series events. Due to the occurrence of an event, particular parameter continuously changes w.r.t time. This changing trend of the parameter is different for different...

28 October 2014 667 4 View

Does increasing the number of neurons in a 2-layered neural network anyway help in classification problems?

I aim at solving a classification problem using two-layered neural network with back propagation algorithm. Will my accuracy increase if I increase the no of neurons in the hidden layer of this...

17 September 2014 9,239 5 View

How do we construct the output membership function for classification problems where classes do not have interpolating properties?

I am stuck on a classification problem using fuzzy inference system. I have read that fuzzy logic can be used for classification problems. But how to construct the output membership function for...

02 September 2014 8,777 7 View

How can we handle data which are time dependent for classification using fuzzy rule base system?

I am having some events which are time dependent. For example, a malfunctioning of a component caused substantial change in some parameters and that may lead to another event after a certain...

07 February 2014 4,204 2 View