Results 31 to 40 of about 220,741 (318)

Query Language for Complex Similarity Queries [PDF]

open access: yes, 2012
For complex data types such as multimedia, traditional data management methods are not suitable. Instead of attribute matching approaches, access methods based on object similarity are becoming popular. Recently, this resulted in an intensive research of indexing and searching methods for the similarity-based retrieval. Nowadays, many efficient methods
Pavel Zezula   +2 more
openaire   +3 more sources

Rancang Bangun Plugin Protégé Menggunakan Ekspresi SPARQL-DL Dengan Masukan Bahasa Alami

open access: yesIJCCS (Indonesian Journal of Computing and Cybernetics Systems), 2017
Semantic web is a technology that allows us to build a knowledge base or ontology for the information of the web page can be understood by computers. One software for building ontology-based semantic web is a protégé. Protege allows developers to develop
Muhammad Fahrurrozi, Azhari SN
doaj   +1 more source

Local properties of query languages [PDF]

open access: yesTheoretical Computer Science, 1996
AbstractIn this paper we study the expressiveness of local queries. By locality we mean — informally — that in order to check if a tuple belongs to the result of a query, one only has to look at a certain predetermined portion of the input. Examples include all relational calculus queries.
Dong, Guozhu   +2 more
openaire   +1 more source

A Natural Language Interface to Relational Databases Using an Online Analytic Processing Hypercube

open access: yesAI, 2021
Structured Query Language (SQL) is commonly used in Relational Database Management Systems (RDBMS) and is currently one of the most popular data definition and manipulation languages. Its core functionality is implemented, with only some minor variations,
Fadi H. Hazboun   +2 more
doaj   +1 more source

Query Expansion for Effective Retrieval Results of Hindi–English Cross-Lingual IR

open access: yesApplied Artificial Intelligence, 2019
Information retrieval (IR) is the science of identifying documents or sub-documents from a collection of information or database. The collection of information does not necessarily be available in only one language as information does not depend on ...
Ganesh Chandra, Sanjay K. Dwivedi
doaj   +1 more source

On the expressive power of query languages [PDF]

open access: yesACM Transactions on Information Systems, 1994
Two main topics are addressed. First, an algebraic approach is presented to define a general notion of expressive power. Heterogeneous algebras represent information systems and morphisms represent the correspondences between the instances of databases, the correspondences between answers, and the correspondences between queries.
Wüthrich, Beat, Schäuble, Peter
openaire   +3 more sources

A query language for analyzing networks [PDF]

open access: yesProceedings of the 18th ACM conference on Information and knowledge management, 2009
With more and more large networks becoming available, mining and querying such networks are increasingly important tasks which are not being supported by database models and querying languages. This paper wants to alleviate this situation by proposing a data model and a query language for facilitating the analysis of networks.
Dries, Anton   +3 more
openaire   +4 more sources

Research on Technology of Generating Multi-table SQL Query Statement by Natural Language

open access: yesJisuanji kexue yu tansuo, 2020
SQL (structured query language) query generation from natural language is not only one of the most important parts of constructing intelligent database query system, but also one of the difficulties in the individualized operation and maintenance of ...
CAO Jinchao, HUANG Tao, CHEN Gang, WU Xiaofan, CHEN Ke
doaj   +1 more source

Effective Approaches to Neural Query Language Identification

open access: yesComputational Linguistics, 2022
Query language identification (Q-LID) plays a crucial role in a cross-lingual search engine. There exist two main challenges in Q-LID: (1) insufficient contextual information in queries for disambiguation; and (2) the lack of query-style training ...
Xingzhang Ren   +6 more
doaj   +1 more source

Improved Centralized XML Query Processing Using Distributed Query Workload

open access: yesIEEE Access, 2021
eXtensible Markup Language (XML) is used widely to transfer data among a wide variety of systems. Due to an increase in query workloads and management of larger datasets, centralized processing is no longer feasible for XML query processing.
Samini Subramaniam   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy