Sergey Porotsky

10 Questions 92 Answers 0 Followers

Questions related from Sergey Porotsky

How to detect spurious correlation in a statistical dataset with binary variables?

The term “spurious correlation” refers to a high correlation that is actually due to some third factor. Consider some statistical dataset, where both input factors and output parameter are binary....

18 January 2021 8,100 25 View

RNN/LSTM Networks : How to take into account different values of times on different time-series?

LSTM tools of the Matlab allow us to perform classification of the time-series. It is assumed, that different time-series can have different length, but they should have same interval of...

14 October 2020 3,610 3 View

Deep Learning : How on one model to take into account both dynamic (time-series) and static features ?

Matlab tools for Deeep Learning allow us to solve classification tasks with static features (e.g., pixels values of images) and tasks with dynamic features (time-series). For time-series it is...

07 September 2020 10,101 6 View

How to evaluate two-dimensional probability based on two one-dimensional (marginal)?

Suppose we have statistics N(m1, m2), where m1 is the value of the first factor, m2 is the value of the second factor, N(m1, m2) is the number of observations corresponding to the values of...

24 April 2020 6,575 9 View

How to estimate Confidence Interval for calculated Posterior Probability on the SVC (Support Vector Classification) method?

On the traditional statistics tasks simultaneously with Probability Value calculation usually we can also estimate Confidence Interval for this Probability value (with some pre-defined Confidence...

29 April 2019 4,932 3 View

Comparison of Deep Learning with SVM, Logistic Regression, etc ?

I've read several times that on the problems of large dimension (Image Recognition, Text Mining, ...), the Deep Learning method gives significantly higher accuracy than the "classical" methods...

06 May 2018 5,122 13 View

How to use SVM for Data Sets with Missing Data?

Values of some parameters for some objects are missing (blank). How to use (transform) SVM classification method for such Data Sets? Please, give me advises, links, references, articles, etc....

21 May 2017 2,876 12 View

Classification (Supervised Learning) Task: How to use simultaneously two cohorts with partially different sets of features ?

I should solve binary classification task. For training (and further for new object recognition) I can use two cohorts. First have M1 records (for N1 features + label), second has M2 records (for...

01 January 1970 2,761 11 View

How Reliable Are Causal Inferences Produced by Statistical Processing Methods (in Regards with Nobel Prize in Economics 2021) ?

In recent years, quite a few reports have been published of the results based on the statistical information processing. For example, a study establishes that the use of a certain remedy (some...

01 January 1970 4,433 3 View

How to evaluate significance of a factor for a phenomenon?

Dear friends, hello! I have been interested in one question for a long time and I really want to discuss it with you. I will be glad to any of your responses. Thanks a lot in advance. Regards,...

01 January 1970 8,707 25 View