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Contribution Details
| Type | Journal Article |
| Scope | Discipline-based scholarship |
| Title | Dynamic Interleaving of Content and Structure for Robust Indexing of Semi-Structured Hierarchical Data |
| Organization Unit | |
| Authors |
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| Item Subtype | Original Work |
| Refereed | Yes |
| Status | Published in final form |
| Language |
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| Journal Title | Proceedings of the VLDB Endowment |
| Publisher | Association for Computing Machinery |
| Geographical Reach | international |
| ISSN | 2150-8097 |
| Volume | 13 |
| Number | 10 |
| Page Range | 1641 - 1653 |
| Date | 2020 |
| Abstract Text | We propose a robust index for semi-structured hierarchical data that supports content-and-structure (CAS) queries specified by path and value predicates. At the heart of our approach is a novel dynamic interleaving scheme that merges the path and value dimensions of composite keys in a balanced way. We store these keys in our trie-based Robust Content-And-Structure index, which efficiently supports a wide range of CAS queries, including queries with wildcards and descendant axes. Additionally, we show important properties of our scheme, such as robustness against varying selectivities, and demonstrate improvements of up to two orders of magnitude over existing approaches in our experimental evaluation. |
| Official URL | http://www.vldb.org/pvldb/vol13/p1641-wellenzohn.pdf |
| Digital Object Identifier | 10.14778/3401960.3401963 |
| Other Identification Number | merlin-id:20733 |
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