2 papers
cs.CR2026
SHARD: cell-keyed residual splitting for alignment-resistant private dense retrieval
Sergey Kurilenko
Dense retrieval systems expose document geometry when vector stores are compromised, and a global protective transform can often be aligned from known pairs. We study SHARD, which…
cs.CR2026
Hybrid privacy-aware semantic search: SVD-truncated document geometry and CKKS-encrypted query reranking under a restricted threat model
Sergey Kurilenko
Semantic search creates an asymmetric disclosure problem: query embeddings may reveal user intent, while returning exact provider vectors distributes reusable representations. We e…