Say What You See: Building Multimodal Content Signals at Scale

This post details the technical implementation of the Multimodal Content System, focusing on the enrichment pipelines for images and reviews. It describes the image classification and quality scoring process, review tag extraction and snippet generation, and sentiment aggregation. It also elaborates on the topic mapping architecture, database schema, and the specific pipelines for topic-based image curation and review snippet extraction, including deduplication and ranking strategies. The serving layer using Couchbase and the overall infrastructure scale are also discussed.