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If $$X=left(begin{array}{c}X_{1}\X_{2}end{array}right)sim Nleft[left(begin{array}{c}mu_{X_{1}}\mu_{X_{2}}end{array}right),left(begin{array}{cc}sigma_{X_{1}}\sigma_{X_{1}X_{2}} & sigma_{X_{2}}end{array}right)right]$$ and $$Ysim logNleft(mu_{Y},sigma_{Y}right)$$ then, which is the distribution of $YX=left(begin{array}{c}YX_{1}\YX_{2}end{array}right)$? is it lognormal?...
Asked on 12/05/2021 by AAE
1 answerFor a kernel function, we have two conditions one is that it should be symmetric which is easy to understand intuitively because dot products are symmetric as well and our...
Asked on 12/05/2021
1 answerFrom the paper that introduced attention mechanisms (Bahdanau et al 2014: Neural Machine Translation by Jointly Learning to Align and Translate), it seems that the translating part...
Asked on 12/05/2021
1 answerWhat is the best way to analyze these data: Subjects are divided in two "Group" (Treatment A and B). "Weight" is recorded before and 3 months after treatment. Outcome variable:...
Asked on 12/05/2021
1 answerI am building a time series forecasting model in which I am considering the macroeconomic indicators as predictors.I wanted to understand 3 thingsHow do I generally go about feature selection...
Asked on 12/05/2021
1 answerI would like to use the glm() function in R to run a multivariate logistic regression. I have also run bi-variate statistics for each variable but want a test that...
Asked on 12/05/2021 by B.Kenobi
1 answerFor a residuals vs fitted plot, we use the fitted values $hat{Y} = beta_0 + beta_1 + cdots + beta_p x_p$ on the horizontal axis and the residuals on...
Asked on 12/05/2021
1 answerAfter reading the answer in How do I normalize a bimodal distribution?, I began to think about the concept more broadly. With OLS on zero-constrained variables, the residuals signal...
Asked on 12/05/2021
0 answerI am doing a numerical experiment about linear regression modeling with presence of both continuous and categorical variables. As done in classical regression modeling practice, the categorical variable is firstly...
Asked on 12/05/2021 by emberbillow
1 answerIn the documents I've seen on boosting and bagging, it seems that they're always talked about in the context of decision trees. What are some other methods in which the...
Asked on 12/05/2021
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