Knowledge & Data · Software component

Fusion Weight Selector

Software componentKnowledge & DataKnowledge & Dataarc:FusionWeightSelector

A retrieval-preparation component that sets the dense/sparse fusion weight per query from query characteristics such as technical terms, product codes or natural-language phrasing.

Responsibility. Chooses the hybrid-search alpha for each query.

Also known as: Dynamic alpha selection

Direct neighbourhood (hover for relationship types)

Relationships

is invoked by dependency

Dense-Sparse Hybrid Retriever Ch6.2B

Classification

Patterns: Lower alpha for technical terms/product codes, higher alpha for conceptual natural-language questions

Sources

Ch6.2B: T. Nguyen, "Production Vector Database Deployment," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 6.2B. ISBN: 9798244538229.