In LASSO, do the selected features differ from one round of implementation to another?

LASSO ( Least Absolute Shrinkage and Selection Operator) is a regularization method used in logistic regression to select the related features of a high-dimensional gene expression data sets....

04 May 2019 2,419 3 View

Where can I find information about the k-out-of-n systems and their reliability?

Dear Colleagues, I am trying to use some results on m-spacings of the gamma (and exponential) distributions on the reliability of the k-out-of-n systems. I found a way to describe the life time...

31 December 2018 8,207 4 View

Is the use of mathematical axioms good or bad in mathematics? Is it difficult to prove axioms?

Some people consider mathematical axioms as points of strength of mathematics, other say that axioms are points of weakness. My question is why?! Is it so difficult to prove mathematical axioms?

11 December 2018 4,547 15 View

What are good subjects for master theses in the field of queueing models?

I am looking for recent subjects in the area of using Markov chains in queueing models or theory for the thesis of a master student in mathematics. Thanks a lot in advance. Mohamed I Riffi

01 February 2018 6,410 5 View

Where one can find fund for his/her mathematics research?

I wounder if any one can enlighten me on the possibility of getting support for a mathematics research I am working on. Thanks so much in advance for your help. Mohamed I. Riffi

11 December 2017 4,131 4 View

How to simulate a Markov Chain?

This Fall, I am teaching my master students an introductory course on Markov chains. I am looking for an easy/clear method to explain the theoretical basis of simulating a Markov chain; i.e.;...

09 October 2017 6,180 8 View

Do we really need to use the normal approximation to the binomial probabilities when testing statistical hypothesis?

Most of statistics textbooks approximate the binomial probabilities by the normal probabilities when testing binomial hypothesis especially when the sample size n is large enough. Now, since we...

09 October 2017 4,569 5 View

What would you do if you and your colleague agree to coauthor a paper and then he decides to write the paper alone and to publish it under his name?

What do you do when you and your colleague in RG agree to write a research paper and provide him with your ideas and some proofs and then he decided is to write the paper alone and to publish it...

06 July 2017 5,227 6 View

How can one describe the follwing conditional probability?

05 June 2017 7,309 5 View

What's wrong with the computation of the probability that the exponential spacing Dn becomes less than t>0 for the first time?

04 May 2017 9,773 11 View

Why should we choose deep learning to machine learning? Why is CNN better for image classification? Can I get Typical Answer?

What Characteristics makes CNN work better?

03 March 2021 1,458 4 View

What are some of the research gaps in machine learning and artificial intelligence in africa?

i would to know some of the research gaps in the artificial intelligence field in most african countries.

03 March 2021 6,145 3 View

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 3 View

Can we block unwanted images during the x-ray prediction?

i am try to classify the x-ray images. During classification , can i block unwanted images (except x-ray image).

03 March 2021 7,100 1 View

Logistical regression using SPSS for a dichotomous dependent variable, with an independent variable of 1, 2, 5 and 10 seconds?

I have an experiment with 28 participants The independent variable is the times 1, 2, 5, and 10 used as the cross hairs during a task These 4 times were tested using 4 different blocks, each...

03 March 2021 9,692 2 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

No title

02 March 2021 3,060 3 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View