The use of ontologies is a key step forward for describing the semantics of information on the Web. It is becoming more and more important to make the information machine-readable, since the volume of data is continuo...
详细信息
ISBN:
(纸本)0889864306
The use of ontologies is a key step forward for describing the semantics of information on the Web. It is becoming more and more important to make the information machine-readable, since the volume of data is continuously growing. In the educational area, metadata are considered to be helpful in such a process. We propose to enrich the description of educational resources by introducing several levels of description of concepts, and to make them machine- readable by using a formal language of ontology, OWL. Using both this ontology and the expressive power of an OWL query language to query pedagogical resources will improve the retrieval and interchange of educational resources.
In this paper we present an example of a part of a pedagogical ontology for a grande école. OWL is intended to help users to formalize ontologies and to be a support for the semantic Web, for example to enable th...
详细信息
ISBN:
(纸本)0769521819
In this paper we present an example of a part of a pedagogical ontology for a grande école. OWL is intended to help users to formalize ontologies and to be a support for the semantic Web, for example to enable the interchange of resources and the inference of knowledge while querying these resources.
In this paper, we study and predict the economic indebtedness for the autonomic of Spain. In turn, we use model of neural network. In this study, we assess the feasibility of the Time-Delay neural network as an altern...
详细信息
ISBN:
(纸本)9728865007
In this paper, we study and predict the economic indebtedness for the autonomic of Spain. In turn, we use model of neural network. In this study, we assess the feasibility of the Time-Delay neural network as an alternative to these classical forecasting models. This neural network permits accumulate more values of pass and a best prediction of the future. We show the MSE assignment to check the good forecasting of indebtedness economic.
In this paper we study cellular evolutionary algorithms, a kind of decentralized heuristics, and the importance of the induced exploration/exploitation balance on different problems. It is shown that, by choosing sync...
详细信息
ISBN:
(纸本)0780385152
In this paper we study cellular evolutionary algorithms, a kind of decentralized heuristics, and the importance of the induced exploration/exploitation balance on different problems. It is shown that, by choosing synchronous or asynchronous update policies, the selection pressure, and thus the exploration/exploitation tradeoff, can be influenced directly, without using additional ad hoc parameters. Synchronous algorithms of different neighborhood-to-topology ratio, and asynchronous update policies are applied to a set of benchmark problems. Our conclusions show that the update methods of the asynchronous versions, as well as the ratio of the decentralized algorithm, have a marked influence on its convergence and on its accuracy.
Querying and integrating sources of structured data from the Web in most cases requires similarity-based concepts to deal with data level conflicts. This is due to the often erroneous and imprecise nature of the data ...
详细信息
The various aspects of the application of multiagent decision support system (DSS) for transportation management are discussed. The DSS prototype assists operators in their management task, helping them to configure c...
详细信息
ISBN:
(纸本)1581138644
The various aspects of the application of multiagent decision support system (DSS) for transportation management are discussed. The DSS prototype assists operators in their management task, helping them to configure consistent control plans for the whole road networks. For the prototype, a simulator was implemented, which, based on the actual bus schedules, emulates the exploitation support system. The implementation of the prototype, that required the integration of various software technologies and tools, has been initially complex and required suitable amount of programming work.
Due to the convenience of pervasive information environment, many people use various computing devices to perform plenty kinds of tasks. In the field of education, there are various applications to facilitate learner,...
详细信息
Due to the convenience of pervasive information environment, many people use various computing devices to perform plenty kinds of tasks. In the field of education, there are various applications to facilitate learner, especially for e-learning. However, some computing devices suffer from the limited resources and cannot accept rich information content. Therefore, the information content has to be tailored into different kinds of presentation depending on the types of computing devices. Context sensitivity is an application software system's ability to sense and analyze context from various sources. In this paper, we aim to customize static documents using context-sensitive middleware (CSM) to sense the computing device, and then using the agent-based parser to provide suitable content representation dynamically.
Much progress has been made in terms of boosting the effectiveness of backtrack style search methods. In addition, during the last decade, a much better understanding of problem hardness, typical case complexity, and ...
详细信息
We study the P versus NP problem through membrane systems. Language accepting P systems are introduced as a framework allowing us to obtain a characterization of the P ≠ NP relation by the polynomial time unsolvabili...
详细信息
The paper has two aims: on one hand, to characterize the nature of the relationship between the latency of an asynchronous pipeline and the stage latencies when the latency of the stages is data-dependent. On the othe...
详细信息
The paper has two aims: on one hand, to characterize the nature of the relationship between the latency of an asynchronous pipeline and the stage latencies when the latency of the stages is data-dependent. On the other hand, to find the closed-form expression which relates the mean value of the latency of the pipeline with the parameters which characterize the behaviour of the constituting stages. To attain these two goals, we have followed an empirical approach; we have developed a model of an asynchronous pipeline with n stages, the latency of the stages has been modelled using a probability density function and the pipeline behaviour has been simulated. From the results, we have defined linear equations which estimate the mean latency of the pipeline without needs of simulation. Finally, we have designed and implemented a 32/spl times/32 bit asynchronous pipelined multiplier, and we have tested the estimations on it.
暂无评论