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XML stream processing using tree-edit distance embeddings

Garofalakis Minos, Kumar Amit

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URIhttp://purl.tuc.gr/dl/dias/12DCEC49-3FB5-4CFB-9587-A761D5EFB408-
Identifierhttp://dl.acm.org/citation.cfm?id=1061326&dl=ACM&coll=DL&CFID=723856831&CFTOKEN=21128548-
Identifierhttps://doi.org/10.1145/1061318.1061326-
Languageen-
Extent54 pagesen
TitleXML stream processing using tree-edit distance embeddingsen
CreatorGarofalakis Minosen
CreatorΓαροφαλακης Μινωςel
CreatorKumar Amiten
PublisherAssociation for Computing Machineryen
Content SummaryWe propose the first known solution to the problem of correlating, in small space, continuous streams of XML data through approximate (structure and content) matching, as defined by a general tree-edit distance metric. The key element of our solution is a novel algorithm for obliviously embedding tree-edit distance metrics into an L1 vector space while guaranteeing a (worst-case) upper bound of O(log2n log*n) on the distance distortion between any data trees with at most n nodes. We demonstrate how our embedding algorithm can be applied in conjunction with known random sketching techniques to (1) build a compact synopsis of a massive, streaming XML data tree that can be used as a concise surrogate for the full tree in approximate tree-edit distance computations; and (2) approximate the result of tree-edit-distance similarity joins over continuous XML document streams. Experimental results from an empirical study with both synthetic and real-life XML data trees validate our approach, demonstrating that the average-case behavior of our embedding techniques is much better than what would be predicted from our theoretical worst-case distortion bounds. To the best of our knowledge, these are the first algorithmic results on low-distortion embeddings for tree-edit distance metrics, and on correlating (e.g., through similarity joins) XML data in the streaming model.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2015-10-29-
Date of Publication2005-
SubjectXMLen
Bibliographic CitationM. Garofalakis and A. Kumar, "XML stream processing using tree-edit distance embeddings", ACM Trans. Dat. Syst., vol. 30, no. 1, pp. 279-332, Mar. 2005. doi:10.1145/1061318.1061326en

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