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age 28
visits member for 3 years, 4 months
seen 15 hours ago

PhD Biostatistician


Oct
19
comment $\frac{d}{dx}(b^TAx)$ where $b, x \in R^{n\times 1}$ and $A \in R^{n\times n}$
Wikipedia's article on Matrix calculus may help with the definition of vector derivatives.
Oct
19
awarded  Nice Question
Oct
19
awarded  Student
Oct
19
asked Hilbert's 19th problem: Why do we care?
Oct
18
comment biased Maximum Likelihood estimation
MLEs are not required to be unbiased. I'm confused as to what you're asking.
Oct
18
revised Covariance of bi-variate normal distribution
re-Fixed LaTeX and added normal distribution tag
Oct
18
suggested approved edit on Covariance of bi-variate normal distribution
Oct
18
comment an independent probability problem
Your #1 and #2 are the same.
Oct
18
revised Convergence in probability of Sn / n
Replaced 'the easiest' way with 'one way' since I don't know for sure if it's the easiest way
Oct
18
answered Convergence in probability of Sn / n
Oct
17
awarded  Vox Populi
Oct
17
awarded  Suffrage
Oct
17
revised L'Hôpital's rule in real analysis
Converted his math to LaTeX. Added limit tag as its a limit question.
Oct
17
suggested approved edit on L'Hôpital's rule in real analysis
Oct
16
comment What is the relationship of $\mathcal{L}_1$ (total variation) distance to hypothesis testing?
It's an Asymptotics course taught by Mark Low. No textbook, though. We basically discuss a lot of the research he's done in the last 15 or so years, so his publications would be the equivalent of the course textbook.
Oct
15
awarded  Citizen Patrol
Oct
15
comment How to prove $n < n!$ if $n > 2$ by induction?
Is the ''suppose it's true for all $k\leq n$'' necessary in the way you proved it? Seems you only need to suppose it's true for k to prove it's true for k+1. That is, is strong induction necessary for this?
Oct
15
awarded  Editor
Oct
15
awarded  Autobiographer
Oct
15
comment How to prove $n < n!$ if $n > 2$ by induction?
Akito was missing the $'s in his LaTeX.