# [CASE STUDY] Label the Same Data with 3 Different Schemas: Binary, Multi-class, Hierarchical Comparison

> Source: https://sukruyusufkaya.com/en/learn/veri-etiketleme-kalite/schema-karsilastirma-binary-multiclass-hierarchical
> Updated: 2026-05-13T13:03:21.941Z
> Category: Veri Etiketleme & Kalite Yönetimi
> Module: Module 1: The Anatomy of Data Labeling
**TLDR:** Label the same 1,000 Turkish review dataset with three different schemas (binary, 5-class fine-grained, hierarchical), train models, and compare performance + cost + utility. A complete case study showing the practical impact of schema decisions.