Results 41 to 50 of about 983,529 (297)

Constraint Databases, Queries, and Query Languages [PDF]

open access: yes, 2000
We formally define the constraint database model, the concept of query in this model, and the basic constraint query languages provided by the relational calculus, the relational algebra, and DATALOG. We show how a computationally complete constraint query language can be obtained by augmenting the constraint relational calculus with basic programming ...
openaire   +3 more sources

A query language for XML

open access: yesComputer Networks, 1999
Abstract An important application of XML is the interchange of electronic data (EDI) between multiple data sources on the Web. As XML data proliferates on the Web, applications will need to integrate and aggregate data from multiple source and clean and transform data to facilitate exchange.
Alin Deutsch   +4 more
openaire   +1 more source

Polynomial conjunctive query rewriting under unary inclusion dependencies [PDF]

open access: yes, 2011
Ontology-based data access (OBDA) is widely accepted as an important ingredient of the new generation of information systems. In the OBDA paradigm, potentially incomplete relational data is enriched by means of ontologies, representing intensional ...
Kikot, Stanislav   +5 more
core   +1 more source

Discover, Reuse and Share Knowledge on Service Oriented Architectures

open access: yesInternational Journal of Interactive Multimedia and Artificial Intelligence, 2011
Current Semantic Web frameworks provide a complete infrastructure to manage ontologies schemes easing information retrieval with inference support. Ideally, the use of their frameworks should be transparent and decoupled, avoiding direct dependencies ...
Lei Shu   +2 more
doaj   +1 more source

Constraint Query Languages

open access: yesJournal of Computer and System Sciences, 1995
AbstractWe investigate the relationship between programming with constraints and database query languages. We show that efficient, declarative database programming can be combined with efficient constraint solving. The key intuition is that the generalization of a ground fact, or tuple, is a conjunction of constraints over a small number of variables ...
KANELLAKIS PARIS   +2 more
openaire   +3 more sources

Toward multi-lingual information retrieval system based on internet linguistic diversity measurement

open access: yesAin Shams Engineering Journal, 2019
We introduce a method for measuring the quantity of online content of a set of languages at domain level. This measurement is used for building a Multi-Lingual Information Retrieval (MLIR) system that identifies which languages are strongly represented ...
Ebtsam Mohamed   +2 more
doaj   +1 more source

Referral Practices and Utilisation of Paediatric Oncology Physiotherapy Services in Ghana: A Cross‐Sectional Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Physical rehabilitation is highly recognised in improving the quality of life of cancer survivors through prehabilitation, sequelae management and palliative care, yet its integration into routine care in Ghana has not been characterised, leading to potential gaps in service access.
Dorothy Ekua Adjabu   +5 more
wiley   +1 more source

HSM-QA: Question Answering System Based on Hierarchical Semantic Matching

open access: yesIEEE Access, 2023
In recent years, Question Answering (QA) systems have gained popularity as a means of acquiring knowledge. However, the prevalent approach of matching question-answer pairs still suffers from low precision and efficiency due to the inherent ambiguity of ...
Jinlu Zhang   +4 more
doaj   +1 more source

Beyond the Document: A Single‐Center Qualitative Study of Survivorship Care Plan Barriers and Opportunities Across Pediatric Oncology Stakeholders

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Survivorship care plans (SCPs) summarize cancer treatment and guide risk‐based follow‐up for cancer survivors, yet remain difficult to create, share, and use. Stakeholder perspectives are needed to inform usable approaches.
Molly S. Talman   +4 more
wiley   +1 more source

Querying Workflow Logs

open access: yesInformation, 2018
A business process or workflow is an assembly of tasks that accomplishes a business goal. Business process management is the study of the design, configuration/implementation, enactment and monitoring, analysis, and re-design of workflows.
Yan Tang, Isaac Mackey, Jianwen Su
doaj   +1 more source

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