AWS Big Data
JUNE 22, 2023
If you simply run queries without considering the optimal data layout on Amazon S3, it results in a high volume of data scanned, long-running queries, and increased cost. Partitioning is a common technique to lay out your data optimally for distributed analytics engines. Another option is using AWS Glue APIs.
Occam's Razor
APRIL 8, 2013
Sometimes, we escape the clutches of this sub optimal existence and do pick good metrics or engage in simple A/B testing. You're choosing only one metric because you want to optimize it. By late 2009, that experiment was a success, too; they'd climbed back up to 4.5 But it is not routine. That metric is tied to a KPI.
The Unofficial Google Data Science Blog
JULY 11, 2017
If both variances are positive then the optimal estimator of $y_{t+1}$ winds up being "exponential smoothing," where past data are forgotten at an exponential rate determined by the ratio of the two variances. Also notice that while the state in this model is Markov (i.e.
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