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In this letter, we propose a novel cooperative caching scheme for the next-generation Internet — content oriented networking (CON), trying to minimize the content access delay for mobile users. We formulate the caching problem as a mixed integer programming model and propose a heuristic solution based on Lagrangian relaxation. Simulation results show that this scheme can greatly reduce content access...
The Internet has become the main information resource, but the retrieval capacity of traditional search engines is poorly text-based or single-modal. In this paper, based on the category structure and conjunction reference analysis of the cross-media objects and their primary features, we intent to solve the problem of the heterogeneous and incompatibility among various categories of media features,...
Cloud computing is a promising technology to facilitate development of large-scale, on-demand, flexible computing infrastructures. However, improving dependability of cloud computing is critical for realization of its potential. In this paper, we describe our efforts to quantify security for Clouds to facilitate provision of assurance for quality of service, one of the factors contributing to dependability...
One of the key concerns in the conceptualisation of a single object is understanding the context under which that object exists (or can exist). This contextual understanding should provide us with clear conceptual identification of an object including implicit situational information and detail of surrounding objects. For example in learning terms, a learner should be aware of concepts related to...
Web services provide the potential to offer interoperability of distributed business-to-business application integration between autonomous organisations, regardless of platforms, operating systems or languages. For both user and vendor organisations, this raises immediate problems of trust, security, privacy and prevention of malicious attacks. Until these problems are addressed and solved properly,...
The Web service technology allows the dynamic composition of a workflow (or a business flow) by composing a set of existing Web services scattered across the Internet. While a given Web service may have multiple service instances taking pan in several workflows simultaneously, a workflow often involves a set of service instances that belong to different Web services. In order to establish trust relationships...
To access the content of digital texts efficiently, it is necessary to provide more sophisticated access than keyword based searching. Genescene provides biomedical researchers with research findings and background relations automatically extracted from text and experimental data. These provide a more detailed overview of the information available. The extracted relations were evaluated by qualified...
This paper presents our research on devising a dependability assessment method for SOAP-based Web services using network level fault injection. We compare existing DCE middleware dependability testing research with the requirements of testing SOAP RPC-based applications and derive a new method and fault model for testing Web services. From this, we have implemented an extendable fault injector framework...
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