How Can I show this using caucy inequality?

To better see This question you can See here: https://stats.stackexchange.com/questions/321445/how-do-i-show-this-using-the-cauchy-schwarz-inequality I asked it there. there is a good answer there...

01 February 2018 5,992 1 View

Why using leave out idea in problems?

I'm not sure why sometimes in problems leave out version of estimators uses. for example when we want standard the data instead of dividing numbers on whole of the sample's standard deviation,...

01 February 2018 4,471 4 View

How to simulate high dimensional tests like articles.

I have studying two sample tests on high dimensional datasets. I have a problem with simulating this test with changing \eta like what is in Feng and Sun article page 33 linked below.Any help will...

05 June 2017 6,073 0 View

Any source for Behrens-Fisher setting Definition?

Hi!I should Say I know what Behrens-Fisher Setting is, But I need a source (book, article or etc.) that contains a definition of Behrens-Fisher setting to make a reference to it in my thesis.any...

10 November 2016 8,213 1 View

Obtain lasso regression coeficient based LS when X'X = I

I need to obtain coefficients of lasso regression based in coefficients of Least Square regression method when $X'X = I $. any help will be appreciated.

03 April 2016 1,984 1 View

How this high dimensional test statistic has been obtained?

Hi! I was reading this article of Feng and Sun. But I was wondering How the statistic has been obtained! any Idea?thanks.

01 February 2016 3,696 0 View

Is there any faster algorithm for Gassian blur?

02 March 2015 9,972 6 View

What is the Best Database Structure for Big Data?

02 March 2015 8,110 9 View

Sampling in twitter

I want to do a research just for fun! I need to sampling in twitter! What I need is a method to do find random account in twitter with equal chance of selection. Has anyone any suggestion to doing...

08 September 2014 1,066 2 View

How can I determine pilot sampling size?

I have a population size 450 and I want to do a pilot survey. How can I determine pilot sampling size?

03 April 2014 3,056 5 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 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

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

Can NFL theorem be valid in infinite search space in ML?

NFL theorem is valid for algorithms training in fixed training set. However, the general characteristic of algorithms in expanded or open dataset has not been proved yet. Could you show your...

01 March 2021 1,189 3 View

Does anyone know how to plot my station to a section plot on Ocean Data View (ODV)?

I made a vertical section plot with WOA .nc file on ODV, and now I want to plot my stations (csv. file) in it. Does anyone know how to import my points to the section? They are two different...

01 March 2021 3,610 1 View

How to address this issue in the analysis of Real-Time PCR results?

To dear Researchers, I was analyzing a series of concentration for estimation of Real-Time PCR efficiency. The concentration was 1:10. I used MS-excel to evaluate Slope. The result of slope was -8...

01 March 2021 8,683 4 View

How to arrange coordinates and extract climate dataset out of MPI-ESM-MR netcdf files?

Have a nice day everyone, I'm stuck in extracting datasets out of MPI-ESM-MR netcdf files because the latitude ranges from -3*10^6 to 3*10^6 and longitude ranges -5,9*10^6 to 5,9*10^6. Plus, the...

28 February 2021 912 3 View

Is there any Machine Learning/AI algorithm that lets you predict with incomplete features without missing value imputation process?

For instance, the model is trained with A,B,C,D,E features to predict F target. Then, I want to make prediction on a new data, but with only A,C,D,E is known without doing missing value imputation...

28 February 2021 1,556 6 View