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cs.DB2026
Stop Indexing at Full Precision: Revisiting Clustering for Vector Embeddings
Leonardo Kuffo, Peter Boncz
In this study, we revisit three widely used techniques in vector search and utilize them to optimize vector embedding indexing through clustering: dimensionality reduction, quantiz…
cs.DB2025
Bang for the Buck: Vector Search on Cloud CPUs
Leonardo Kuffo, Peter Boncz
Vector databases have emerged as a new type of systems that support efficient querying of high-dimensional vectors. Many of these offer their database as a service in the cloud. Ho…
cs.DB2025
PDX: A Data Layout for Vector Similarity Search
Leonardo Kuffo, Elena Krippner, Peter Boncz
We propose Partition Dimensions Across (PDX), a data layout for vectors (e.g., embeddings) that, similar to PAX [6], stores multiple vectors in one block, using a vertical layout f…