The text explores the complexities of search in computer science, highlighting two primary methods: semantic and keyword-based search. Semantic search, utilizing vector embeddings, enables the retrieval of semantically similar results by mapping queries in a vector space, while keyword-based search focuses on the lexical attributes of a query. The blog further discusses hybrid search, which combines both methods to enhance search accuracy, and emphasizes the significance of reranking search results to optimize relevance. It introduces LanceDB, a tool that facilitates hybrid search and reranking, offering various reranking models such as LinearCombinationReranker and CohereReranker, each with distinct approaches to refining search results. The text underscores the flexibility of LanceDB in accommodating custom reranking logic, which can significantly improve retrieval quality and downstream applications in information retrieval systems.