Stories by jmount

What is a good Sharpe ratio?

Why does designing a simple A/B test seem so complicated?

Neural net image salad again (with code)

Betting with their money

I do not believe Google invented the term “A/B test”

Wanted: a perfect scatterplot (with marginals)

R in a 64 bit world (indexing large structures)

Erdös Writing Like a Programmer

I still think you can manufacture a (slightly) unfair coin

As an R programmer have you every wondered what can be in a data.frame column?

Unfulfilled promise leaks in R

Using closures as objects in R

Don’t use the Sharpe ratio to A/B test email campaigns

Does balancing classes improve classifier performance?

New (paid) video course: Introduction to Data Science

How sure are you that large margin implies low VC dimension?

An empirical study of FORTRAN programs (1971) [pdf]

MyCoin closes its doors, $387M in investor funds vanishes

Double check your return types when modeling in R

Soft margin is not as good as hard margin

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