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The Semantic Web is gaining immense popularity-and with it, the Resource Description Framework (RDF)broadly used to model Semantic Web content. However, access control on RDF stores used for single machines has been seldom discussed in the literature. One significant obstacle to using RDF stores defined for single machines is their scalability. Cloud computers, on the other hand, have proven useful...
Information extraction (IE) from corpora is texts analysis in order to extract structured information such as Named Entities (NE) which may be names of person, organization, address, date, location etc. ... GATE is a software toolkit written in Java from 1995 and widely used worldwide by many communities (scientists, companies, teachers, students) for natural language processing. We have experimented...
Data provenance is becoming increasingly important in distributed computing environments. Data provenance is used for inspecting and verifying data quality, data usability, and data reliability. This paper proposes a data provenance architecture based on semantic web services for managing data provenance. This architecture can record and query semantic provenance information. In detail, we present...
Question matching is a key stone in web intelligent question answering system. A novel question matching algorithm based on ontology and description logic is presented in the paper. Domain knowledge represented by ontology is very important in question matching. Concepts and relations between concepts are extracted from both standard and user questions, then the concepts and relations in standard...
Due to the advent of knowledge-based economy and virtual enterprise business model, the enterprises get the knowledge not only from themselves but also from others. In order to support knowledge retrieval in virtual enterprises, the distributed case-based reasoning system (DCBRs) plays an important role for enabling knowledge-driven virtual enterprises. Hence, this paper aims to develop a mechanism...
Meteorological and oceanographic (METOC) systems that support the needs of the warfighter often involve configuring support for querying dispersed METOC data. The joint METOC broker language (JMBL) has been established as the interface to query METOC data sources for machine to machine communication. To cover a wide spectrum of data needs, the JMBL standard has grown in complexity. This complexity...
The size of publicly indexable World Wide Web has probably surpassed 14.3 billion documents and as yet growth shows no sign of leveling off. As more information becomes available on the Web it is more difficult to provide effective search services for Internet users. Since, it is assumed that users do not always formulate search queries using the best terms. So, search engines invoke query expansion...
Ontology merging and integration is a collaborative process. We overcome the traditional integration approaches and propose bridge ontology architecture to cope with representational heterogeneity among ontologies for interoperability. It handles all the possible complications of relationships among the ontologies during matching and mapping phases. Proposed architecture accommodates class-based,...
Distributed repositories, containing digital documents are usually maintained and managed independently according to organization/users own requirements. Same information (i.e. documents containing same information) in different repositories, may be represented differently, makes it hard to retrieve desired information. Keyword based information retrieval technique helps in improving recall of user...
As the processes of urbanization and globalization continue to gain momentum, issues relating to interdependencies among water, food, nutrition and public health policy have increased in complexity and scope. Thus, it is no longer sufficient for subject-matter experts to develop models for each of their underlying domains of expertise (e.g., nutrition, healthcare, and land and water management) independently...
Disruption-tolerant networks aim at reliable delivery of messages to their intended destinations even when continuous end-to-end paths are not available. Frequent network disruptions result in poor connectivity to name servers that can resolve destination names to specific network identifiers such as DNS names, IP addresses, or phone numbers. Disruptions also make it virtually impossible to keep dynamic...
As a revival paradigm for information sharing among distributed nodes in the network, P2P technology can pave the way for decentralized computing and enable more robust e-business applications. Peer-to-peer system is a continuously evolving system consisting of multiple heterogeneous information sources, and a huge number of users with diverse characteristics and needs. Currently, many research projects...
The retrieval for educational course materials is mainly based on the keyword based match, educational course materials can not be achieved in a semantic way. The paper proposed the onto-query system, a specific semantic query system for educational domain. The paper first constructs the ontology for the instructional materials titled computer network and visualizes the representation of the ontology...
Wireless sensor networks (WSN) generate large volumes of raw data which possess natural heterogeneity. WSNs are normally application specific with no sharing or reusability of sensor data among applications. In order for applications and services to be developed independently of particular WSNs, sensor data need to be enriched with semantic information. In this paper, we propose a semantic Web architecture...
Semantic Web service descriptions are typically multi-parameter constructs. Discovering semantically relevant services given a desirable service description is typically addressed by performing a pairwise, logic-based match between the requested and offered parameters. However, little or no attention is given to combining these partial results to compile the final list of candidate services. Instead,...
Distributed intelligent software agents (DISA) are software agents that help out users and act on their behalf. Such agents might be robots or virtual software systems. They are able to intelligent if they interact with their environment in an approach that would generally be observed as intelligent if that communication were carried out by a human being. As a result, gathering information from Web...
A lot of high quality and wealthy data are hidden in backend database and search engines can not index this page, which is called Deep Web. It is mostly accessible through query interfaces. SDWS, a semantic search engine for Deep Web is presented. We are studying and implementing semantic Web technology to the each process of Deep Web information integrated, and expertise in Deep Web discovering,...
The growing amount of distributed data over the internet leads to increasing needs for interoperability. Being able to take into account the meaning of information is a real challenge for suitable data sharing. The semantic web and the ontologies are relevant technologies to provide semantic cooperation of heterogeneous sources. We propose a complete architecture OWSCIS (Ontology and Web Service based...
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