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Efficient XML-to-SQL Query Translation [chapter]

Rajasekar Krishnamurthy, Raghav Kaushik, Jeffrey F Naughton
2004 Proceedings 2004 VLDB Conference  
We then show that the SQL queries output by previously published algorithms often blindly reflect the hierarchical nature of the XML schema, even when it is clearly unnecessary.  ...  We demonstrate that it is possible to translate path expression queries (an important class of XML queries) into a single SQL query, even in the presence of recursion in the XML schema and the XML query  ...  graph T , where annot(u) = annot(v) = R.C and R.C is bijectively mapped.  ... 
doi:10.1016/b978-012088469-8.50016-4 dblp:conf/vldb/KrishnamurthyKN04 fatcat:yad7ndt26vggpc5cprlmet5jei

The Future is not One-dimensional: Complex Event Schema Induction by Graph Modeling for Event Prediction [article]

Manling Li, Sha Li, Zhenhailong Wang, Lifu Huang, Kyunghyun Cho, Heng Ji, Jiawei Han, Clare Voss
2022 arXiv   pre-print
Intrinsic evaluations based on schema matching and instance graph perplexity, prove the superior quality of our probabilistic graph schema library compared to linear representations.  ...  To build and evaluate such schemas, we release a new schema learning corpus containing 6,399 documents accompanied with event graphs, and we have manually constructed gold-standard schemas.  ...  Government is authorized to reproduce and distribute reprints for governmental purposes notwithstanding any copyright annotation therein.  ... 
arXiv:2104.06344v3 fatcat:uvcwnqggrfhi3dz5nfe5gxi7rq

Semantic multimedia

Werner Bailer, Bernard Mérialdo, Yiannis Kompatsiaris, Tat-Seng Chua
2011 Multimedia tools and applications  
Based on a narratological and computational background, they introduce a model and a schema for the annotation of the narrative features, as well as a software annotation tool.  ...  In Extending MPEG-7 For Ef f icient Annotation of Complex Web 3D Scenes Malamos et al. present an annotation scheme based on MPEG-7 for describing 3D scenes encoded in X3D.  ... 
doi:10.1007/s11042-011-0855-5 fatcat:gnhwqmlhwnfh7fkz32dzjlkazy

Supporting retrieval of diverse biomedical data using evidence-aware queries

Eithon Cadag, Peter Tarczy-Hornoch
2010 Journal of Biomedical Informatics  
We address diverse information retrieval via a simple framework for representing coverage and evidence that operates in parallel with an arbitrary schema, and a language upon which queries on the schema  ...  Furthermore, we used two additional annotation sets generated from the full query graph, where 20% and 80% of the annotations for each protein were randomly selected as results.  ...  Fig. 10 . 10 Frequency curves of the full graph ('No query' Table 3 3 Example of annotations found for the protein PNMT_HUMAN (P11086).  ... 
doi:10.1016/j.jbi.2010.07.005 pmid:20643225 pmcid:PMC3059407 fatcat:st7manmpwrg2fls2hnfofwbxua

Quality Awareness over Graph Pattern Queries

Philippe Rigaux, Virginie Thion
2017 Proceedings of the 21st International Database Engineering & Applications Symposium on - IDEAS 2017  
We also show how to simply extend a generic state-of-the-art algorithm for graph pa ern queries evaluation in order to implement quality awareness at evaluation time and we study its complexity.  ...  We examine the problem of quality awareness when querying graph databases.  ...  and annotations to RDF data graphs.  ... 
doi:10.1145/3105831.3105871 dblp:conf/ideas/RigauxT17 fatcat:zt35hzo3bbemngzxwsf6pmzpza

Provenance-Aware Knowledge Representation: A Survey of Data Models and Contextualized Knowledge Graphs

Leslie F. Sikos, Dean Philp
2020 Data Science and Engineering  
This paper is a critical review of data models, annotation frameworks, knowledge organization systems, serialization syntaxes, and algebras that enable provenance-aware RDF statements.  ...  [18] , GSMM [51] ; -extensions of the RDFS semantics: Annotated RDF Schema [52, 53] ; -purpose-designed implementation techniques -using annotations: RDF/XML Source Declaration, 25 resource annotation  ...  The semantics of named graphs extends the RDF(S) semantics.  ... 
doi:10.1007/s41019-020-00118-0 fatcat:gzavypx5ejeufjmjmc3yhwcdzy

The SphereSearch Engine for Unified Ranked Retrieval of Heterogeneous XML and Web Documents

Jens Graupmann, Ralf Schenkel, Gerhard Weikum
2005 Very Large Data Bases Conference  
For Web data the XML-oriented query engine is leveraged to provide very rich search options that cannot be expressed in traditional Web search engines: concept-aware and link-aware querying that takes  ...  Web pages in HTML or PDF are automatically converted into XML format, with the option of generating semantic tags by means of linguistic annotation tools.  ...  But SphereSearch also deviates from and significantly extends prior work by interpreting all data as a graph structure rather than trees.  ... 
dblp:conf/vldb/GraupmannSW05 fatcat:de4blj4r5zatzmgmsfaq3knl3u

Sync your data: update propagation for heterogeneous protein databases

Kajal T. Claypool, Elke A. Rundensteiner
2005 The VLDB journal  
This represents a significant challenge to the scientific community, forcing scientists to be continuously aware of the frequent changes made to public data sources, and more importantly aware of the potential  ...  [RR87] have proposed a fixed set of linear schema transformations for an extended ER model.  ...  The schema model is a graph model that is loosely based on the XML Schema model and can represent schemas from the XML, relational and object models 1 .  ... 
doi:10.1007/s00778-005-0155-7 fatcat:452kfcw37zcgfpbdcq5luh2bka

Efficient XML-to-SQL Query TranslationWhere to Add the Intelligence? [chapter]

R KRISHNAMURTHY, R KAUSHIK, J NAUGHTON
2004 Proceedings 2004 VLDB Conference  
To support this claim, we present a translation algorithm that exploits translation time information to generate efficient SQL for path expression queries over tree schemas. * Work done while the authors  ...  graph T , where annot(u) = annot(v) = R.C and R.C is bijectively mapped.  ...  For example, in the annotated schema graph shown in Figure 2 , consider schema nodes 14 and 39, which are columncompatible. Now, 14 | 4 39 is true.  ... 
doi:10.1016/b978-012088469-8/50016-4 fatcat:p3i6uzqccfhgpbgx3uqp4nxqnu

SADGA: Structure-Aware Dual Graph Aggregation Network for Text-to-SQL [article]

Ruichu Cai, Jinjie Yuan, Boyan Xu, Zhifeng Hao
2022 arXiv   pre-print
Based on the proposed unified modeling, we further devise a structure-aware aggregation method to learn the mapping between the question-graph and schema-graph.  ...  The structure-aware aggregation method is featured with Global Graph Linking, Local Graph Linking, and Dual-Graph Aggregation Mechanism.  ...  As future work, we will extend SADGA to other heterogeneous graph tasks and other alignment tasks.  ... 
arXiv:2111.00653v3 fatcat:znwo4wg2vnhbzle4yr3oninaze

Schema-Guided Paradigm for Zero-Shot Dialog [article]

Shikib Mehri, Maxine Eskenazi
2021 arXiv   pre-print
We introduce the Schema Attention Model (SAM) and improved schema representations for the STAR corpus.  ...  To this end, we leverage the schema-guided paradigm, wherein the task-specific dialog policy is explicitly provided to the model.  ...  To this end, we extend the schema representation by incorporating user utterances into the schema graph. As shown in Figure 2 , our schema graph incorporates nodes corresponding to user utterances.  ... 
arXiv:2106.07056v1 fatcat:wgcjoskpxrc4hiy36v2jchwumi

Wide-area motion imagery (WAMI) exploitation tools for enhanced situation awareness

Erik Blasch, Guna Seetharaman, Kannappan Palaniappan, Haibin Ling, Genshe Chen
2012 2012 IEEE Applied Imagery Pattern Recognition Workshop (AIPR)  
For enhanced exploitation and analysis, there is a need to develop WAMI methods for situation awareness.  ...  Multi-source data fusion using exploitation context from the video needs to be linked to semantically extracted elements for situation awareness to aid an operator in rapid image understanding.  ...  can be linked between large graphs and images.  ... 
doi:10.1109/aipr.2012.6528198 dblp:conf/aipr/BlaschSPLC12 fatcat:iv3ek6pdpfdkxkgob5ogynr56e

R2BA - Rationalizing R2RML Mapping by Assertion

Rita Berardi, Vania Vidal, Marco A. Casanova
2015 Proceedings of the 17th International Conference on Enterprise Information Systems  
To address this problem, this paper extends a semi-automatic method to define R2RML mappings to include design rational, thereby helping publishers to document the design process and final users to consume  ...  having to create a new graph based on the relational schema to know what has to be annotated; (ii) Since the DR graph is created in all steps of R 2 BA, it can be consumed whenever it is needed, without  ...  The search for unmapped neighbors follows an annotation strategy up to a certain depth in the DR graph.  ... 
doi:10.5220/0005337700050014 dblp:conf/iceis/BerardiVC15 fatcat:uiae5uqz5nfcrij6xbhdc2u3xu

A Query Language for Multi-version Data Web Archives [article]

Marios Meimaris, George Papastefanatos, Stratis Viglas, Yannis Stavrakas, Christos Pateritsas, Ioannis Anagnostopoulos
2016 arXiv   pre-print
In this way, schema evolution is captured by annotating schema elements with schema changes. Definition 5.  ...  Moreover, we extend this hierarchical attribution to generic metadata annotations instead of strictly temporal.  ... 
arXiv:1504.01891v3 fatcat:wazigr2bsnamve3wpo2avfnzq4

Towards a knowledge graph for open healthcare data

Kawtar YOUNSI DAHBI
2020 International Journal of Advanced Trends in Computer Science and Engineering  
To support the construction of the KG4OGD, we propose a knowledge representation model for both OGD Metadata and content as a schema model for the KG4OGD.  ...  In this, work we propose to construct the KG4OGD, a knowledge graph that drives the transformation of open government raw data to valuable knowledge.  ...  Extracted data is published in the KG according to a specific schema which improves their quality and consistency [20] [19] [22] or without a schema (schema-less Knowledge graphs).  ... 
doi:10.30534/ijatcse/2020/216942020 fatcat:pyl5yxism5dmlh26hoojzrv2gq
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