Bob van Luijt
Co-Founder & CEO, Weaviate | Creator of Open-Source AI Vector Database | Agentic RAG Architect
Verified Proof of Work Artifacts
2 items catalogedEach artifact below represents an authenticated research publication, production code repository, or technical architectural framework directly authored or co-created by Bob van Luijt. Every entry undergoes editorial source verification.
Hybrid Search: Merging Sparse and Dense Retrieval for Generative Grounding
Authored the technical blueprint explaining Relative Score Fusion (RSF) and reciprocal rank fusion algorithms for combining sparse lexical matching with dense vector embeddings to maximize RAG precision.
Weighting hyperparameter tuning between keyword and vector dense scores varies by industry domain and query semantics.
Weaviate: Open-Source AI Vector Search Engine
Engineered a low-latency, cloud-native vector database written in Go featuring custom HNSW implementations, product quantization (PQ), and native GraphQL/REST/gRPC interfaces.
High-dimensional HNSW vector graphs require substantial resident memory footprints without product quantization.