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In order to explore the inherent law of serious collisions and provide a reference to determine the result of accidents, this paper proposed a new model of vessel collision analysis and prediction based on data mining. After collecting complete vessel collision accidents reports, indexes of the severity of vessel collision were extracted and quantified. By using the method of factor analysis, the...
The discrete time/cost trade-off problem (DTCTP) only focuses on renewable or nonrenewable resource-constraints separately, this paper extends the DTCTP to a new multi-resource constrained discrete time/cost trade-off problem (MRCDTCTP), which involves multiple renewable and nonrenewable resource-constraints simultaneously. The objective is to minimize the project total cost under the contract duration,...
Firstly, the paper makes a briefly analysis and comment about the fuzzy c-means clustering algorithm. Then a new kind of hybrid genetic algorithm is proposed on the base of the combination of genetic algorithm and simulated annealing algorithm, and it is applied in fuzzy c-means clustering. It overcomes the locality and the Sensitivity to initial clustering central of fuzzy c-means clustering, by...
This paper proposes an algorithm for QoS multicast routing with multiple constraints using genetic algorithm. It considers multiple QoS parameters such as delay, bandwidth, jitter and losing rate. The algorithm utilizes the tree-coding to save the encoding space and cut down the decoding operation, designs the improved crossover and the mutation operations based on the tree-coding. The experiment...
For effects of the parameters of fuzzy controller with nonlinear scaling factors on a system's performance and the parameters are interactive, this paper proposes a parameters self-adaptive fuzzy controller based on genetic algorithm (GA). Simulation results show that the proposed fuzzy controller has better dynamics and static property. When the parameters or structure of plant is changed, the presented...
For effects of the parameters of fuzzy controller with nonlinear scaling factors on a system's performance and the parameters are interactive, this paper proposes a method based on genetic algorithm (GA) to tune and optimize the parameters. Simulation results show that system which adopted the parameters derived from the method has better dynamics and static property. When the parameters or structure...
TF-IDF formula can represent effectively the text characteristics; the immunity system (TIS) has many characteristics, including the distributional protection, multiplicity, auto-adapted in the information processing, it is robust and expansibility, memory ability, fault-tolerant ability, dynamic stability as well as exceptionally examines. The paper analyzes characteristics of many illegal emails...
In recent years, computing high-technology manufacturing (HTM) labor productivity (LP) level and growth rate has gained a renewed interest in both growth economists and trade economists. Measuring LP performance has become an area of concern for companies and policy makers. HTM LP is complex to conduct due to its nonlinearity of influenced factors. Support vector machines (SVM) have been successfully...
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