With the fast development of Internet and data volume increase in Internet, Internet is playing more important role in information spreading in recent years. It is reported that social network is a typical complex net...
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With the fast development of Internet and data volume increase in Internet, Internet is playing more important role in information spreading in recent years. It is reported that social network is a typical complex network expressed with scale free degree. Emergency cases are happening more and more often in China and all over the world, the governments has realized that it is necessary to monitor and manage the information spreading on social network. In this paper, a new experiment platform frame, which is based on SPA (Spreading Activation) model and social centrality, is proposed to validate the information spreading speed in social network, to help the administration department to manage social network more efficiently.
Agent-based evacuation modeling approach is gained more and more attention for investigating human cognitive capabilities and social behaviors in building fires. This paper mainly overviews the research about various ...
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Agent-based evacuation modeling approach is gained more and more attention for investigating human cognitive capabilities and social behaviors in building fires. This paper mainly overviews the research about various agent-based evacuation models. For the decision-making reflects the intelligence of agent individual, we define three types of behavior decision-making models for agent individual based on the collected literatures and sum up the characteristics of each type. Aiming at crowd' important influence on evacuation processes, we also sum up two types of agent-based crowd modeling approaches to simulate crowd evacuation processes and give corresponding cases. Finally, after summing up the existing problems, the outlooks of the research from computational experiments point of view is proposed.
Considering the linear wireless sensor network application scenarios, such as road, bridge, tunnel and metro where linear network and multi-hop traffic pattern make the energy consumption unbalanced. The nodes near th...
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We are interested in developing a multi-goal generator to provide detailed goal representations that help to improve the performance of the adaptive critic design (ACD). In this paper we propose a hierarchical structu...
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ISBN:
(纸本)9781467314886
We are interested in developing a multi-goal generator to provide detailed goal representations that help to improve the performance of the adaptive critic design (ACD). In this paper we propose a hierarchical structure of goal generator networks to cascade external reinforcement into more informative internal goal representations in the ACD. This is in contrast with previous designs in which the external reward signal is assigned to the critic network directly. The ACD control system performance is evaluated on the ball-and-beam balancing benchmark under noise-free and various noisy conditions. Simulation results in the form of a comparative study demonstrate effectiveness of our approach.
Because the structure and function of a high-rise building is complex and the density of occupants is high, and the rescue from outside is very difficult, safe and timely evacuation is an important issue under high-ri...
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In this paper, a hierarchical neural network with cascading architecture is proposed and its application to classification is analyzed. This cascading architecture consists of multiple levels of neural network structu...
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The discrete weld seam feature points acquired in the course of arc-welding robot's teaching can not be used to control robot's movement, while a continuous curve which describes weld seam's space position...
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The discrete weld seam feature points acquired in the course of arc-welding robot's teaching can not be used to control robot's movement, while a continuous curve which describes weld seam's space position is suitable for guiding the welding process. So an interpolation-point cubic parametric spline method is proposed to fit a 3D weld seam. Weld seam feature points should be analysed in order to estimate the linearity of local weld seam, the value of interpolation points within nonlinear weld seam may be evaluated by quadratic function interpolation. Experiment result indicates that even if the feature points are sparse, the fitted curve may pass through all feature points precisely and there is no disturbance between adjacent feature points.
Initial point location and seam tracking are two main functions of intelligent welding robots. According to the features of the butt seams in container manufacture, this paper presents a novel initial point location u...
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Initial point location and seam tracking are two main functions of intelligent welding robots. According to the features of the butt seams in container manufacture, this paper presents a novel initial point location using the geometric relationship between two seams. An image-based visual seam tracking control method is proposed, which is based on the target and current image features of the seams. The target image feature is corrected in the welding process to compensate the curve of the tracking rails. The experiments are well conducted to verify the effectiveness of the proposed methods. The new systems can be applied in the real welding tasks.
Important users are high-status vertices in social networks. They are everywhere in most fields of society and have big impact on those around them. Although a lot of effort has been made on identifying important user...
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ISBN:
(纸本)9781467330930
Important users are high-status vertices in social networks. They are everywhere in most fields of society and have big impact on those around them. Although a lot of effort has been made on identifying important users, the efficient methods still need to be developed, especially for the web users from Sina microblog, which is the most popular social networking sites in China and has unique characteristics. In this paper, a machine learning-based method which only uses several attributes on Naive Bayes Classifiers (NBC) and Back Propagation Neural Network (BPNN) was proposed to identify important users. Initial experiments indicate that our method is effective. The result of "high" category has more than 55% accuracy rate. We find the NBC can identify more important users while BPNN has higher accuracy rate. What's more, the numbers of follower and followings in Sina microblog is independent.
For spectators and public transport demand during the 16th Asian Games and the first Asian Para Games held in Guangzhou in 2010, Aided Decision-Making System of Public Transportation management for Guangzhou Asian Gam...
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ISBN:
(纸本)9781467313971
For spectators and public transport demand during the 16th Asian Games and the first Asian Para Games held in Guangzhou in 2010, Aided Decision-Making System of Public Transportation management for Guangzhou Asian Games had been developed to support public transport management decision. It can help public transport managers to enhance the level of public transport management from experience-based formulation and manual implementation to scientific computation-based formulation and automatic implementation by intelligentsystems, to guarantee the traffic demand effectively during the games, and to improve the management of public transportation significantly.
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