7,880 Hits in 5.6 sec


2011 International Journal of Semantic Computing (IJSC)  
This article introduces a distributional structured semantic space which enables data model independent natural language queries over RDF data.  ...  The process of allowing users to expressively query relationships in RDF while abstracting them from the underlying data model represents a fundamental problem for Web-scale Linked Data consumption.  ...  A Distributional Structured Semantic Space for Querying RDF Graph Data 441 Fig. 3 . 3 Construction of the base spaces and of the final distributional structured semantic space (T-Space).  ... 
doi:10.1142/s1793351x1100133x fatcat:4ws744oufnf65i632tpaqoapjq

A Multidimensional Semantic Space for Data Model Independent Queries over RDF Data

Andre Freitas, Joao Gabriel Oliveira, Edward Curry, Se´n O'Riain
2011 2011 IEEE Fifth International Conference on Semantic Computing  
This article introduces a multidimensional semantic space model which enables data model independent natural language queries over RDF data.  ...  The process of allowing users to expressively query relationships in RDF while abstracting them from the underlying data model represents a fundamental problem for Web-scale Linked Data consumption.  ...  In the space of structure indexes for RDF, Semplore [16] is a search engine for Linked Data which uses a hybrid query formalism, combining keyword search with structured queries.  ... 
doi:10.1109/icsc.2011.89 dblp:conf/semco/FreitasOCO11 fatcat:wtl3o2ar7jhrbptp36ihkwiqt4

A Distributed Process Infrastructure for a Distributed Data Structure [article]

Marko A. Rodriguez
2008 arXiv   pre-print
In an effort to provide a seamless integration of the data contained in RDF repositories, the Linked Data community is providing specifications for linking RDF data sets into a universal distributed graph  ...  This essay discusses the importance of adding a distributed RDF process infrastructure to the current distributed RDF data structure.  ...  Introduction The Semantic Web community has introduced a set of standards and protocols for representing, querying, and manipulating a distributed, directed labeled graph of web resources.  ... 
arXiv:0807.3908v1 fatcat:ipjhhp4tcbfhbdfpvvkijkqtq4

Learned Semantic Index Structure Using Knowledge Graph Embedding and Density-Based Spatial Clustering Techniques

Yuxiang Sun, Seok-Ju Chun, Yongju Lee
2022 Applied Sciences  
Using a learned semantic index structure for semantic search, we can efficiently discover interlinked data distributed across multiple resources.  ...  We propose a hybrid strategy between the index and distributed approaches based on KGE to increase join query performance.  ...  Data Availability Statement: Not applicable. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/app12136713 fatcat:cxjs4zzlzrekfponwf7ahaqis4

An Approach Towards Classifying and Navigating RDF data based on Pattern Structures

Mehwish Alam, Amedeo Napoli
2015 International Conference on Formal Concept Analysis  
This paper proposes a new approach based on Formal Concept Analysis (FCA) to create a navigation space over semantic web data.  ...  Afterwards, SPARQL queries can be posed over this navigation space to access these distributed resources from one platform for information retrieval purposes.  ...  Section 4 details the framework of semantic pattern structures for creating schema rich navigation space over RDF data. Section 5 defines the querying mechanism over the obtained navigation space.  ... 
dblp:conf/icfca/AlamN15 fatcat:7figtxdpr5bbhb6jxf2if732b4

Querying the Web of Data: A Formal Approach [chapter]

Paolo Bouquet, Chiara Ghidini, Luciano Serafini
2009 Lecture Notes in Computer Science  
In this paper, we propose a preliminary model for such an open collection of graphs which goes beyond the standard single-graph RDF semantics, describes three different ways in which a query can be answered  ...  The increasing amount of interlinked RDF data has finally made available the necessary building blocks for the web of data.  ...  In this section we propose a more structured formal semantics for the graph space where the notion of data resource (identified by a URI) is explicitly modelled.  ... 
doi:10.1007/978-3-642-10871-6_20 fatcat:r76noon23fg4lglrriqrg5fqgy

Workshop on semantic data management

Reto Krummenacher, Karl Aberer, Atanas Kiryakov, Rajaraman Kanagasabai
2011 SIGMOD record  
The International Workshop on Semantic Data Management (SemData) was held in Singapore co-located with the VLDB Conference 2010, with the goal of serving as a platform for the discussion and investigation  ...  of various aspects related to semantic databases and data management in the large.  ...  The index was represented in form of a parameterized structure index called PIG that summarizes the structure of general graph-based data like RDF; the structure index was a graph too that simulates the  ... 
doi:10.1145/1942776.1942784 fatcat:5hnsvbartvb6fomiqt2rciua3y

Teaching Learning Based Optimization in Semantic Web of Distributed RDF

2019 International journal of recent technology and engineering  
Semantic web data use as a unified data model in various areas, such as Bioinformatics, media data, Wikipedia, social networks, and government open data.  ...  The major problem on the web is to handle the large volume of the data that also has other challenges like query processing and optimization over widely distributed RDF data.  ...  INTRODUCTION The semantic Web is like a huge single database made through structured metadata, vocabularies and linking between open data.  ... 
doi:10.35940/ijrte.b3191.078219 fatcat:fjikl576r5foxmwwtckm6fpzd4

Chapter 7 Scalable Knowledge Graph Processing Using SANSA [chapter]

Hajira Jabeen, Damien Graux, Gezim Sejdiu
2020 Lecture Notes in Computer Science  
This chapter introduces Scalable Semantic Analytics Stack (SANSA), that addresses the challenge of dealing with large scale RDF data and provides a unified framework for applications like link prediction  ...  In the meantime, the distributed data processing technologies have also advanced to deal with big data and large scale knowledge graphs.  ...  This layer also gives access to a mechanism for RDF data compression in order to lower the space and processing time when querying RDF data (c.f Sect. 3.2).  ... 
doi:10.1007/978-3-030-53199-7_7 fatcat:zx4suhofwngsxbigtars4y4s3u

Statistics based Optimization Technique for Query Processing

Semantic web consists of the data in the structure manner and query searching methods can access these structured data to provide effective search result.  ...  These methods involve in the use of many features which are selected from the user query. This in-turn increases the cost of a query in the semantic web.  ...   Abstract: Semantic web consists of the data in the structure manner and query searching methods can access these structured data to provide effective search result.  ... 
doi:10.35940/ijitee.b1044.078219 fatcat:rczr2baelbf7rptssn4mg5ctv4

A survey on self‐organized semantic storage

Hannes Mühleisen, Tilman Walther, Robert Tolksdorf
2011 International Journal of Web Information Systems  
Distributing the task of storing and querying semantic information onto multiple computers is a way of achieving this performance.  ...  A case is made for self-organization in a distributed storage system as the key to excellence in the relevant non-functional requirements: scalability, adaptability and robustness.  ...  To date, no "silver bullet" for the distributed storage of semantic information in the standardized form of RDF graphs has been proposed.  ... 
doi:10.1108/17440081111165866 fatcat:j6lwe3t6kndajdbsf26y264bdq

Natural language queries over heterogeneous linked data graphs

Andre Freitas, Edward Curry
2014 Proceedings of the 19th international conference on Intelligent User Interfaces - IUI '14  
The demand to access large amounts of heterogeneous structured data is emerging as a trend for many users and applications.  ...  However, the effort involved in querying heterogeneous and distributed third-party databases can create major barriers for data consumers.  ...  Once the space is built, the RDF graph data is embedded into the space (step 2), defining the τ − Space, a structured distributional semantic vector space.  ... 
doi:10.1145/2557500.2557534 dblp:conf/iui/FreitasC14 fatcat:tggaavvaavh6vk26maazwwlzti

Querying linked data graphs using semantic relatedness: A vocabulary independent approach

André Freitas, João Gabriel Oliveira, Seán O'Riain, João C.P. da Silva, Edward Curry
2013 Data & Knowledge Engineering  
Ideally, a query mechanism for Linked Data should abstract users from the representation of data.  ...  This work focuses on the investigation of a vocabulary independent natural language query mechanism for Linked Data, using an approach based on the combination of entity search, a Wikipedia-based semantic  ...  The construction of an approach based on a vector space model provides a distributional structured semantic index for semantic search over data graphs, targeting queries with additional vocabulary independency  ... 
doi:10.1016/j.datak.2013.08.003 fatcat:evewv24ulvhrfa2f3tuadempta

RDF Stores for Enhanced Living Environments: An Overview [chapter]

Petteri Karvinen, Natalia Díaz-Rodríguez, Stefan Grönroos, Johan Lilius
2019 Lecture Notes in Computer Science  
We present a literature analysis of RDF stores and identify promising candidates for implementation of consumer Smart Spaces.  ...  The amount of linked data has brought with it a number of specialized databases that are capable of storing and processing RDF data, called RDF stores.  ...  The RDF graphs in Oracle 11g are modelled using relational tables and views that are optimized for semantic data. RDF graphs can be accessed in the system by using mixed SQL and SPARQL queries.  ... 
doi:10.1007/978-3-030-10752-9_2 fatcat:47bng7lnkfg3zhhhhxbxp3awpu

Graph-Based RDF Data Management

Lei Zou, M. Tamer Özsu
2017 Data Science and Engineering  
(natural language question/answering) for users to access a RDF repository.  ...  The increasing size of RDF data requires efficient systems to store and query them.  ...  RDF [34] , a distributed, memory-based graph engine for web-scale RDF data.  ... 
doi:10.1007/s41019-016-0029-6 fatcat:vvon32ikfze2pogwdc4abihmjm
« Previous Showing results 1 — 15 out of 7,880 results