~/talk

A smooth ride: Online car buying and selling at mobile.de

on YouTube 27m
Talkat Berlin Buzzwords 2022 · 2022-06-12..06-14· [machine-learning]

speaker

name:Ricardo Kawase
links:none on file

resources

video:https://youtu.be/bpr0ZQq_hLk
slides:none on file

summary

mobile.de runs a suite of production data products: price prediction using XGBoost/H2O with BigQuery + Airflow and a Scala REST API, a personalized search ranking using historical snapshots and a learning to rank lambdaMART model deployed to Elasticsearch LTR, weekly-retrained fraud detection stacks, and financing-intent scores. Site stats: 12 million monthly users, 1.6 million live listings, 40k dealer customers. Early LTR A/B tests show a 6–7% uplift versus business-rule ranking, later iterations net 1–2% gains, and user exposure to fraud falls below 1% overall.

AI-written summary · about

chapters (6)

  1. 0:00Introduction to mobile.de
  2. 7:40Search ranking with ML
  3. 13:22Market price prediction
  4. 19:01Fraud detection system
  5. 23:55Account takeover prevention
  6. 24:35Q&A session

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