AWS Big Data

MARCH 4, 2024

Lake Formation tag-based access control (LF-TBAC) is an authorization strategy that defines permissions based on attributes. Data files in snapshots are stored in one or more manifest files that contain a row for each data file in the table, its partition data, and its metrics. In Lake Formation, these attributes are called LF-Tags.

Snapshot 108

Snapshot Data Lake Metadata Recreation/Entertainment 108

Occam's Razor

APRIL 25, 2011

and meet many many many executives and hear about their digital marketing strategies, challenges and outcomes. Your SEO strategy is buying links, expired domains, et. Bring a structured approach to your measurement strategy, bring some process, let a Web Analytics Measurement Model be the foundation of your program.

Marketing 126

Marketing Measurement Metrics Testing 126

The Unofficial Google Data Science Blog

JUNE 30, 2016

A naïve way to solve this problem would be to compare the proportion of buyers between the exposed and unexposed groups, using a simple test for equality of means. Random forest with default R tuning parameters (Breiman, 2001). Although it may seem sensible at first, this solution can be wrong if the data suffer from selection bias.

Statistics 44

Statistics Optimization Modeling Experimentation 44

Domino Data Lab

MAY 20, 2021

Working with highly imbalanced data can be problematic in several aspects: Distorted performance metrics — In a highly imbalanced dataset, say a binary dataset with a class ratio of 98:2, an algorithm that always predicts the majority class and completely ignores the minority class will still be 98% correct. In their 2002 paper Chawla et al.

Machine Learning 136

Machine Learning Metrics Data mining Knowledge Discovery 136