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sasrec

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AI Recommendation System & Data Engineering Lakehouse processing 21M+ records. Bridges distributed Databricks PySpark Medallion pipelines (Delta Lake SCD-2) with a 6-model PyTorch deep learning recommendation ensemble, 10-shard Neon serverless vector search (pgvector), sub-10ms serving, and an interactive React 19 cinema portal.

  • Updated Sep 15, 2026
  • Python

A reproducible, resource-aware solution for the Kaggle OTTO multi-objective recommendation competition, featuring co-visitation retrieval, target-aware candidates, LambdaMART ranking, and neural retrieval experiments.

  • Updated Jul 24, 2026
  • Python

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