In this study an integrated decision method for the multi-prediction results of tropical cyclone movements by using genetic algorithm(GA)has been adopted.A genetic learning artifi-cial neural network(GLANN)as a learni...In this study an integrated decision method for the multi-prediction results of tropical cyclone movements by using genetic algorithm(GA)has been adopted.A genetic learning artifi-cial neural network(GLANN)as a learning mechanism for track prediction was developed through training with the huge samples of typhoon tracks from 1884 to 2002.The prediction of typhoon motion is to consider how to suit the dynamic change of environment,where typhoon passed through.The neural network structure is described by GA.A fitness function for choice of GA is given to approach the maximum of fitness(the minimum of the errors).Parallel comparing analyses for prediction abilities of unusual typhoon tracks in recent years by GLANN with multi-forecast methods were conducted.More types of cases were employed in the comparing analyses,which consist of the typhoon,Winnie,No.11,in 1997,characterized by a long life over the ocean and in the mainland with severe effect on China,the 10 unusual typhoon tracks in the 1990s,the tracks with landfall and affected action in 1998 and the typhoons born in the Northwestern Pacific and the South China Sea in 2000,including the 24—48 h forecast,etc.The results indicated that for prediction ability of typhoon tracks,specially for unusual typhoons,GA decision-making developed in this study is superior to the others.展开更多
In 1948, the first clinical paper adopting the protocol of randomized and controlled design was published in British Medical Journal by Bradford Hill,a noted British biostatistician, who introduced rigorous theory of ...In 1948, the first clinical paper adopting the protocol of randomized and controlled design was published in British Medical Journal by Bradford Hill,a noted British biostatistician, who introduced rigorous theory of mathematical statistics into clinical design the first time and successfully evaluated the therapeutic effect of streptomycin on tuberculosis.展开更多
Abundant sensor data are now available online from a wealth of sources,which greatly enhance research efforts on the Digital Earth.The combination of distributed sensor networks and expanding citizen-sensing capabilit...Abundant sensor data are now available online from a wealth of sources,which greatly enhance research efforts on the Digital Earth.The combination of distributed sensor networks and expanding citizen-sensing capabilities provides a more synchronized image of earth’s social and physical landscapes.However,it remains difficult for researchers to use such heterogeneous Sensor Webs for scientific applications since data are published by following different standards and protocols and are in arbitrary formats.In this paper,we investigate the core challenges faced when consuming multiple sources for environmental applications using the Linked Data approach.We design and implement a system to achieve better data interoperability and integration by republishing real-world data into linked geo-sensor data.Our contributions include presenting:(1)best practices of re-using and matching the W3C Semantic Sensor Network(SSN)ontology and other popular ontologies for heterogeneous data modeling in the water resources application domain,(2)a newly developed spatial analysis tool for creating links,and(3)a set of RESTful OGC Sensor Observation Service(SOS)like Linked Data APIs.Our results show how a Linked Sensor Web can be built and used within the integrated water resource decision support application domain.展开更多
In this study a new hybrid aggregation operator named as the generalized intuitionistic fuzzy hybrid Choquet averaging（GIFHCA） operator is defined.Meantime,some desirable properties are studied, and several importan...In this study a new hybrid aggregation operator named as the generalized intuitionistic fuzzy hybrid Choquet averaging（GIFHCA） operator is defined.Meantime,some desirable properties are studied, and several important cases are examined.Furthermore,we define the generalized Shapley GIFHCA （GS-GIFHCA） operator,which does not only overall consider the importance of elements and their ordered positions,but also globally reflect the correlations among them and their ordered positions.In order to simplify the complexity of solving a fuzzy measure,we further define the generalizedλ-Shapley GIFHCA（GλS-GIFHCA） operator.展开更多
基金supported jointly by the Science and Teclmology Minis try of China under item"973"Air Environmental&Its Contolling(Grant G199045700)Special Project of Landfall Typhoon(Grant No.2001DIA20026).
文摘In this study an integrated decision method for the multi-prediction results of tropical cyclone movements by using genetic algorithm(GA)has been adopted.A genetic learning artifi-cial neural network(GLANN)as a learning mechanism for track prediction was developed through training with the huge samples of typhoon tracks from 1884 to 2002.The prediction of typhoon motion is to consider how to suit the dynamic change of environment,where typhoon passed through.The neural network structure is described by GA.A fitness function for choice of GA is given to approach the maximum of fitness(the minimum of the errors).Parallel comparing analyses for prediction abilities of unusual typhoon tracks in recent years by GLANN with multi-forecast methods were conducted.More types of cases were employed in the comparing analyses,which consist of the typhoon,Winnie,No.11,in 1997,characterized by a long life over the ocean and in the mainland with severe effect on China,the 10 unusual typhoon tracks in the 1990s,the tracks with landfall and affected action in 1998 and the typhoons born in the Northwestern Pacific and the South China Sea in 2000,including the 24—48 h forecast,etc.The results indicated that for prediction ability of typhoon tracks,specially for unusual typhoons,GA decision-making developed in this study is superior to the others.
文摘In 1948, the first clinical paper adopting the protocol of randomized and controlled design was published in British Medical Journal by Bradford Hill,a noted British biostatistician, who introduced rigorous theory of mathematical statistics into clinical design the first time and successfully evaluated the therapeutic effect of streptomycin on tuberculosis.
文摘Abundant sensor data are now available online from a wealth of sources,which greatly enhance research efforts on the Digital Earth.The combination of distributed sensor networks and expanding citizen-sensing capabilities provides a more synchronized image of earth’s social and physical landscapes.However,it remains difficult for researchers to use such heterogeneous Sensor Webs for scientific applications since data are published by following different standards and protocols and are in arbitrary formats.In this paper,we investigate the core challenges faced when consuming multiple sources for environmental applications using the Linked Data approach.We design and implement a system to achieve better data interoperability and integration by republishing real-world data into linked geo-sensor data.Our contributions include presenting:(1)best practices of re-using and matching the W3C Semantic Sensor Network(SSN)ontology and other popular ontologies for heterogeneous data modeling in the water resources application domain,(2)a newly developed spatial analysis tool for creating links,and(3)a set of RESTful OGC Sensor Observation Service(SOS)like Linked Data APIs.Our results show how a Linked Sensor Web can be built and used within the integrated water resource decision support application domain.
基金supported by the National Natural Science Foundation of China(Nos.71201089,71201110, 71071018 and 71271217)the Natural Science Foundation Youth Project of Shandong Province,China (ZR2012GQ005)the Specialized Research Fund for the Doctoral Program of Higher Education(No. 20111101110036)
文摘In this study a new hybrid aggregation operator named as the generalized intuitionistic fuzzy hybrid Choquet averaging（GIFHCA） operator is defined.Meantime,some desirable properties are studied, and several important cases are examined.Furthermore,we define the generalized Shapley GIFHCA （GS-GIFHCA） operator,which does not only overall consider the importance of elements and their ordered positions,but also globally reflect the correlations among them and their ordered positions.In order to simplify the complexity of solving a fuzzy measure,we further define the generalizedλ-Shapley GIFHCA（GλS-GIFHCA） operator.
