The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Statistical topic models represented by Latent Dirichlet Allocation (LDA) and its variants are ubiquitously applied to understanding large corpora. Meanwhile, topic models based on bag-of-words (Bow) rarely adopt contextual information, which encompasses enormous amount of serviceable knowledge in a document, into the probabilistic framework. This shortcoming of LDA leads to its failing to learn contextual...
Testability plays an important role in the readiness of equipment as a good design for testability (DFT) can greatly decrease the fault detection and isolation time, which will accelerate the maintenance actions. Testability verification is a procedure to check that whether the testability indexes such as fault detection rate (FDR) and fault isolation rate (FIR) meet the requirement in the contract...
In this paper, we propose a security-oriented transmission scheme with the help of multiple relays in Cognitive Radio (CR). To maximise the Secrecy Capacity (SC) of the source-destination link in CR, both beamfor-ming and cooperative jamming technologies are used to improve the performance of the Secondary User (SU) and protect the Primary User (PU). The effectiveness of the proposed scheme is demonstrated...
To solve the problem of grid resource allocation for tasks, an allocation algorithm based on improved particle swarm optimization was proposed. This algorithm leaded the cross operation, variation operation and select operation of the GA to the Particle Swarm Optimization Algorithm, it effectively overcame the inherent flaw of getting local optimal value by particle swarm algorithm and find the global...
In the HLA framework, aimming at the ship repair enterprise, this paper establishes a evaluation simulation system based on multi-agent,then designs the simulation process of system and completes the implementation details of the agent model. A results of simulation example shows that the system can provide a rational assessment of repair capabilities, in order to provide important support for enterprise...
In this paper, cost function for routing is studied. By introduction of improved cost function, an improved algorithm is proposed. Compared with the original algorithm, the improved algorithm is more stable and the feasible solution obtained is closer to the upper bound of optimal solution. The optimal solution lies between the upper bound and the feasible solution, so the feasible solution is even...
Summary form only given. In mobile relay networks, relay nodes in mobility generally have variable channel conditions and limited residual energy, which may affect the network performance. In this paper, we proposed a cross-layer design jointly incorporating best relay selection and power allocation strategies to increase the cooperative network lifetime while minimizing the overall power consumption...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.