Are Regression and Backpropagation basically the same ?

While learning Deep Learning using regression (Euclidean Loss), I stumbled on a question: Back-propagation minimizes the cost wrt the gradient descent and regression minimizes the cost of...

04 May 2017 5,631 0 View

How to use MATLAB deep learning without GPU?

03 April 2017 8,154 15 View

Using matlab example DL for regression based count?

I am trying to learn DL with an example.However, running the following code (attached in image) results in an error : Undefined function 'categories' for input arguments of type 'double'. I...

02 March 2017 1,012 3 View

Deep Learning with matlab: How to use a pretrained model?

I am new to DL. I am working in Matlab. I do not have a GPU in my laptop. I have a model which has three files; deploy.prototxt, solver.prototxt and train_val.prototxt. I wish to use the interface...

02 March 2017 478 3 View

KNN Classification problem. Why the test result is always the first label of training sample?

Hello everyone I've a training set of 17 observations. The dimensions of training and testing data are X= 17x7660 (features, each row is feats from each obs) Y= 17 x 1 (label for each row)...

10 November 2016 2,740 8 View

How to train data for a video classification?

09 October 2016 7,022 5 View

How to find no-fee ISI journals in Image Processing?

Hello, I've noticed that some of the journals I was targeting to publish a paper in were very expensive. I was wondering if there is any list or service which lists journals according to their...

06 July 2016 1,878 2 View

How to determine IOF for an image?

For image enhancement quality measures, one of them is Index of Fuzziness. Can anyone tell me how to find it? Is there a function already in Matlab 2013?

05 June 2016 5,697 1 View

How to find difference of entropy at different scales of an image?

Hello, Finding the entropy of an image at each pixel can be done using moving window. If an image is downsampled, how to find the difference of entropy among original and downsampled version of...

04 May 2016 4,068 6 View

Making equations and inferences from data?

Hello, I've a question regarding how researchers come up with equations in their work? For instance, y=ax + b or y=x^a +b whether a weight has to be multiplied or raised at a power of another...

03 April 2016 7,067 1 View

How to compare 2 samples recruited with different sampling methods?

If I want to compare characteristics of 2 groups of patients, one group is recruited from a random sample of the general public while another group is from a sample with a fixed gender (male to...

26 February 2021 3,526 3 View

Do you consider undergoing a structure literature review / Meta analysis and getting numerical findings sort of quantitative method?

I am looking for a classification of the research methods included in literature review papers or Meta analysis ones .

22 February 2021 1,131 4 View

Can I do two kinds of mixed method in explanatory research?

Dear distinguish professors and scholars, I have a research in measuring two kinds: think tank capacity and research impact on policy. Can I do two kinds of mixed methods in order to find, "Is...

20 February 2021 6,897 1 View

Algorithms to filter corrective max and min from a set of data?

I've got this 5 year Direct Normal Irradiance data I downloaded from https://re.jrc.ec.europa.eu/. I ordered this by year and by every 24 hours because I need the DNI curve by max in summer, min...

17 February 2021 2,777 5 View

How to analyse a (perceptual) study using differing/comparable sets of stimuli?

I plan on running an online perceptual experiment that has, let's say, 100 unique video stimuli altogether. Since these are too many to be rated by every participants, I would like to present the...

15 February 2021 7,444 2 View

How to analyse a split-plot design in stata ?

I have run an split-plot design experiment evaluating the efficacy of a treatment (with 3 whole plots and 4 sub-plots), and I am planning to analyse the collected data in Stata. However, I do...

14 February 2021 7,800 7 View

Can I use a likert survey for criterion sampling in a qualitative study or would that make it mixed methods?

I am doing a phenomenographic study on the reading experiences of avid v. Neutral v. Non-Readers. If I use a likert survey to criterion sample for participants, does that make it a mixed method...

09 February 2021 8,594 3 View

How to create the context-mechanism-outcome configuration (CMOc) in the realist methodology?

In the realist methodology (especially by Raymond Pawson et al), the CMOc is a common structure to explain what works, for whom, in what circumstances, and why? I'm always asked about the...

08 February 2021 2,792 1 View

Recommendations for sample size in visual qualitative research (using children's drawings)?

Hi everyone! Asking for a little help, if I may. I am working on a research project, where I aim to analyse children's drawings about Covid-19. I am fairly new to using visual data in qualitative...

07 February 2021 9,530 3 View

How do I create a categorical variable, level of exposure, and a dummy dichotomous, yes-no, variable for the Harvard Trauma Questionnaire Part 1?

I am using the Harvard Trauma Questionnaire (HTQ) Trauma Events scale (original version) that has 17 items (17 different traumatic events) with 4 response options, indicating 4 levels of exposure:...

04 February 2021 1,509 3 View