## The Final Stage of Grief (about bad data) is Acceptance

I recently gave a talk at the Fifth Elephant 2019. The talk was a discussion about how to use math to handle unfixably bad data. The slides are available here.. Go check it out.

more ...Posts listed on the homepage are the more popular or interesting ones. Click here for the chronological blog listing.

I recently gave a talk at the Fifth Elephant 2019. The talk was a discussion about how to use math to handle unfixably bad data. The slides are available here.. Go check it out.

more ...I recently gave a talk at CrunchConf 2018. The talk was a about the various impossibility theorems that make a person concerned with AI Ethics must content with. The slides are available here.. Go check it out.

more ...Consider a data set, a sequence of point $@ (x_1, y_1), (x_2, y_2), \ldots, (x_k, y_k)$@. We are interested in discovering the relationship between x and y. Linear regression, at it's simplest, assumes a relationship between x and y of the form $@ y = \alpha x + \beta + e$@. Here, the variable $@ e …

more ...I've written a number of posts here about a/b testing, and readers have probably observed that I favor the Bayesian approach. I'm very happy to announce that Wingify (my employer) has release SmartStats - a fully Bayesian A/B testing engine. I've always maintained that you should A/B test …

more ..."So, how much experience do you have with Big Data and Hadoop?" they asked me. I told them that I use Hadoop all the time, but rarely for jobs larger than a few TB. I'm basically a big data neophite - I know the concepts, I've written code, but never at …

more ...I'm a former high frequency trader. And following the tradition of G.H. Hardy, I feel the need to make an apology for my former profession. Not an apology in the sense of a request for forgiveness of wrongs performed, but merely an intellectual justification of a field which is …

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- Measuring Bernoulli Probabilities in the Presence of Delayed Reactions
- Has your conversion rate changed? An introduction to Bayesian timeseries analysis with Python.
- Attribution Theory is Misguided
- Bandit Algorithm and A/B Testing Tutorial
- How to measure a changing conversion rate (with python code)
- Analyzing conversion rates with Bayes Rule (Bayesian statistics tutorial)