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Hierarchical Model

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Alimama Tech
Alimama Tech
Mar 14, 2023 · Artificial Intelligence

Bayesian Hierarchical Calibration for Online Advertising Scoring

Bayesian hierarchical calibration applies a lightweight, interpretable Bayesian GLM with variational inference to correct pre‑ and post‑click scoring biases, using risk‑aware objectives that reduce calibration error by up to 66%, lift revenue by 5%, and cut conversion costs, while handling cold‑start and dimension‑wise sparsity in online advertising.

Hierarchical Modeladvertisingbayesian
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Bayesian Hierarchical Calibration for Online Advertising Scoring
Architect
Architect
Nov 30, 2015 · Databases

A Historical Overview of Database Models: From Hierarchical to Relational and Beyond

This article traces the evolution of database models—from early hierarchical and network structures through the relational revolution and entity‑relationship diagrams to modern distributed and multi‑tenant designs—highlighting key concepts, technical challenges, and the theoretical foundations that shaped today’s data storage systems.

Data ModelingDatabaseHierarchical Model
0 likes · 27 min read
A Historical Overview of Database Models: From Hierarchical to Relational and Beyond