Retrieval and Ranking Architectures

CP4285 Modern Recommendation Systems — Week 06 QR code for the Week 06 slide deckScan for the slides
soc-n.us/cp4285-t2610-w06

CP4285 Instruction Team

15 Sep 2026

01 Overview

Week 6: Retrieval and Ranking Architectures

Learning outcomes

  • Explain industrial recommendation pipelines.
  • Design retrieval-ranking architectures.
  • Analyze scalability trade-offs.

  • Evaluate how ranking affects different stakeholders.

02 Pipeline Design

Candidate generation, ranking, and re-ranking

TODO: add two-tower architectures and systems trade-offs. ## Ethics Thread: Visibility allocation ::: {.callout-warning} TODO: examine stakeholder impacts of ranking choices. ::: —

Summary

🔑 Pipeline stages allocate both computation and visibility.

Next week: project design critique workshop.