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GRASP: Plan-Guided Graph Retrieval with Adaptive Fusion and Reranking on Semi-Structured Knowledge Bases

Announce Type: replace Abstract: Semi-structured knowledge bases (SKBs) embed textual documents in a typed graph of entities and relations, and underpin applications such as product search, academic paper search, and precision-medicine inquiries. Existing hybrid retrieval systems on SKBs either use the graph only for query expansion, mix textual and structural branches under a global weighting, or rely on fine-tuned graph-traversal generators. We present GRASP, a three-stage SKB retrieval...

arXiv CS 8d ago

Unix GC Remastered

Introduction The AF_UNIX garbage collector is an interesting piece of the kernel. It exists because sockets can be sent with SCM_RIGHTS but they can become unreachable from user-space while still being kept alive by the kernel, which is not memory efficient; in this situation, the garbage collector intervenes to free them. Not long ago, the subsystem was rewritten from scratch on top of a graph/Strongly-Connected-Components model; but it is still bug prone.

Hacker News 4h ago