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arXiv 2204.12902cs.SI
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基于个性化PageRank的分散内容搜索图扩散方案

A Graph Diffusion Scheme for Decentralized Content Search based on Personalized PageRank

Nikolaos Giatsoglou, Emmanouil Krasanakis, Symeon Papadopoulos, Ioannis Kompatsiaris

摘要:

去中心化正在成为未来互联网的一个关键特征。然而,最先进的去中心化技术中缺少有效的搜索算法,例如分布式哈希表和区块链。这是令人惊讶的,因为分散式搜索在早期的点对点(P2P)文献中得到了广泛的研究。在这项工作中,我们采用了一个新的前景分散搜索在P2P网络的启发,在密集的信息检索和图形信号处理的进步。特别是,我们根据P2P节点存储的文档生成P2P节点的潜在表示,并使用图形过滤器(如个性化PageRank)将其扩散到网络的其余部分。然后,我们使用扩散表示引导搜索查询相关的内容。我们的初步方法是成功的,在附近的节点定位相关的文件,但准确性急剧下降的存储文件的数量,突出需要更复杂的技术。

英文摘要:

Decentralization is emerging as a key feature of the future Internet. However, effective algorithms for search are missing from state-of-the-art decentralized technologies, such as distributed hash tables and blockchain. This is surprising, since decentralized search has been studied extensively in earlier peer-to-peer (P2P) literature. In this work, we adopt a fresh outlook for decentralized search in P2P networks that is inspired by advancements in dense information retrieval and graph signal processing. In particular, we generate latent representations of P2P nodes based on their stored documents and diffuse them to the rest of the network with graph filters, such as personalized PageRank. We then use the diffused representations to guide search queries towards relevant content. Our preliminary approach is successful in locating relevant documents in nearby nodes but the accuracy declines sharply with the number of stored documents, highlighting the need for more sophisticated techniques.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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