The multi-signature method can improve the accuracy of entity resolution. However,it will bring the redundant computation problem in the parallel processing framework. In this paper,a multisignature based parallel ent...The multi-signature method can improve the accuracy of entity resolution. However,it will bring the redundant computation problem in the parallel processing framework. In this paper,a multisignature based parallel entity resolution method called multi-sig-er is proposed. The method was implemented in MapReduce-based framework which first tagged multiple signatures for each input object and utilized these signatures to generate key-value pairs,then shuffled the pairs to the reduce tasks that are responsible for similarity computation. To improve the performance,two strategies were adopted. One is for pruning the candidate pairs brought by the blocking technique and the other is for eliminating the redundancy according to the transitive property. Both strategies reduce the number of similarity computation without affecting the resolution accuracy. Experimental results on real-world datasets show that the method tends to handle large datasets rather than small datasets,and it is more suitable for complex similarity computation as compared to simple similarity matching.展开更多
A new collapse model of the trapdoors,three-dimensional rectangular trapdoor(3DRT),is presented for ground surface collapse.Undrained stability of 3DRT is examined with the upper bound method of plasticity limit analy...A new collapse model of the trapdoors,three-dimensional rectangular trapdoor(3DRT),is presented for ground surface collapse.Undrained stability of 3DRT is examined with the upper bound method of plasticity limit analysis theory.The soil where the trapdoors are located is assumed to be a perfectly plastic model with a Tresca yield criterion.Block analysis technique is employed to investigate the collapse of 3DRT.The model is divided into five different block types and added up to ten rigid blocks.According to the law of conservation of energy,the critical stability ratios of 3DRT are obtained through a search proceeding.The results of upper bound solution for 3DRT are given,and three trapdoor models with depth various are discussed during the application in the stability analysis of square trapdoors.The critical stability ratios can be used in the design of underground excavation and support force.展开更多
基金National Natural Science Foundation of China(No.61402100)the Fundamental Research Funds for the Central Universities of China(No.17D111205)
文摘The multi-signature method can improve the accuracy of entity resolution. However,it will bring the redundant computation problem in the parallel processing framework. In this paper,a multisignature based parallel entity resolution method called multi-sig-er is proposed. The method was implemented in MapReduce-based framework which first tagged multiple signatures for each input object and utilized these signatures to generate key-value pairs,then shuffled the pairs to the reduce tasks that are responsible for similarity computation. To improve the performance,two strategies were adopted. One is for pruning the candidate pairs brought by the blocking technique and the other is for eliminating the redundancy according to the transitive property. Both strategies reduce the number of similarity computation without affecting the resolution accuracy. Experimental results on real-world datasets show that the method tends to handle large datasets rather than small datasets,and it is more suitable for complex similarity computation as compared to simple similarity matching.
基金the Fundamental Research Funds for the Provincial Universities,China(No.702/000007020303)。
文摘A new collapse model of the trapdoors,three-dimensional rectangular trapdoor(3DRT),is presented for ground surface collapse.Undrained stability of 3DRT is examined with the upper bound method of plasticity limit analysis theory.The soil where the trapdoors are located is assumed to be a perfectly plastic model with a Tresca yield criterion.Block analysis technique is employed to investigate the collapse of 3DRT.The model is divided into five different block types and added up to ten rigid blocks.According to the law of conservation of energy,the critical stability ratios of 3DRT are obtained through a search proceeding.The results of upper bound solution for 3DRT are given,and three trapdoor models with depth various are discussed during the application in the stability analysis of square trapdoors.The critical stability ratios can be used in the design of underground excavation and support force.
