In this paper, a constrained parameter evolutionary learning (CPEL) algorithm for Bayesian network (BN) parameters learning under scarce data is proposed, which can be applied to UAV autonomous mission decision-making...
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In this paper, a constrained parameter evolutionary learning (CPEL) algorithm for Bayesian network (BN) parameters learning under scarce data is proposed, which can be applied to UAV autonomous mission decision-making. In detail, firstly qualitative domain knowledge is employed into BN parameters learning process to reduce the parameter search space where two types of qualitative domain knowledge with experts' confidence are presented;and then evolutionary strategy is introduced into the process to avoid the problem that classical learning technique falls into local optimum easily in which the special encoding for the BN parameters is presented and some evolutionary strategies are discussed. Moreover, the global convergence of the proposed algorithm is proven. According to numerical experiments, it's demonstrated that the CPEL algorithm has better accuracy and timeliness performance than the classical EM algorithm under the same condition. Additionally, a case study of the proposed algorithm in UAV autonomous mission decision-making has been conducted, showing that CPEL algorithm can satisfy the need of UAV autonomous mission decision-making in a complex dynamic environment.
New constructionMonsanto has started up new plant at its William G. Krummrich site in Sauget, Ill., to make phosphate esters. Capacity is 24 million pounds annually. Another 24 million pound-per-year unit is slated to...
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New constructionMonsanto has started up new plant at its William G. Krummrich site in Sauget, Ill., to make phosphate esters. Capacity is 24 million pounds annually. Another 24 million pound-per-year unit is slated to go into operation at firm's Delaware River plant, Bridgeport, N.J., by midyear. Phosphate ester plasticizers are flame retardant *** Sulphuris building pilot plant in Belle Chasse, La., to test processing on large scale of nickel-cobalt ore from deposit at Greenvale in Queensland, Australia. Firm and its Australian partnerMetals Exploration, N.L., are also continuing to study commercial feasibility of Greenvale nickel *** 200 million gallon-per-year methanol plant will be built byCelanese Chemical. Construction of facility will start shortly at Celanese's Clear Lake, Tex., site and will be completed fourth-quarter 1971. Unit will useImperial Chemical Industries'low-pressure methanol *** Aluminum'stitanium division will expand and modernize its mill capacity. Result will be tripling of titanium ...
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