The text discusses how traditional keyword search algorithms often miss the mark in search-driven applications, focusing on exact word matches rather than understanding context or meaning. Semantic search uses vector embeddings to capture the meaning and context of words, delivering smarter, more relevant results. With filters, users can refine their searches by location, category, or custom fields. The guide provides a step-by-step tutorial on setting up a semantic search with filters in PostgreSQL using pgvector, pgai, and pgvectorscale extensions. It covers creating embeddings from the review text column, setting up vectorizer automation, applying filters to refine results, and invoking the `semantic_search` function to perform searches with optional filters. The implementation demonstrates how to build a powerful semantic search engine with filtering capabilities in PostgreSQL, combining simplicity with performance.