为了提高推荐算法评分预测的准确度,该文在Trust Walker模型的基础上,提出了一个改进的基于信任网络和随机游走策略的评分预测模型——Referential User Walker模型。该模型通过随机游走策略,利用信任网络中的信任朋友对目标物品或与目...为了提高推荐算法评分预测的准确度,该文在Trust Walker模型的基础上,提出了一个改进的基于信任网络和随机游走策略的评分预测模型——Referential User Walker模型。该模型通过随机游走策略,利用信任网络中的信任朋友对目标物品或与目标物品相似的物品的评分进行评分预测,并在信任网络中找到最可信的Top N评分参考用户,同时引入信任度权重,降低了噪声数据的影响。实验结果表明,与Trust Walker模型相比,Referential User Walker模型的评分预测准确度有所提高。展开更多
High-level ab initio calculations of theΛ-S states for aluminum monoiodide(AlCl)molecule are performed by utilizing the explicitly correlated multireference configuration interaction(MRCI-F12)method.The Davidson corr...High-level ab initio calculations of theΛ-S states for aluminum monoiodide(AlCl)molecule are performed by utilizing the explicitly correlated multireference configuration interaction(MRCI-F12)method.The Davidson correction and scalar relativistic correction are investigated in the calculations.Based on the calculation by the MRCI-F12 method,the spin-orbit coupling(SOC)effect is investigated with the state-interacting technique.The adiabatic potential energy curves(PECs)of the 13Λ-S states and 24Ωstates are calculated.The spectroscopic constants of bound states are determined,which are in accordance with the results of the available experimental and theoretical studies.Finally,the transition properties of 0^(+)(2)-X0^(+),1(1)-X0^(+),and 1(2)-X0^(+)transitions are predicted,including the transition dipole moments(TDMs),Franck-Condon factors(FCFs),and the spontaneous radiative lifetimes.展开更多
文摘为了提高推荐算法评分预测的准确度,该文在Trust Walker模型的基础上,提出了一个改进的基于信任网络和随机游走策略的评分预测模型——Referential User Walker模型。该模型通过随机游走策略,利用信任网络中的信任朋友对目标物品或与目标物品相似的物品的评分进行评分预测,并在信任网络中找到最可信的Top N评分参考用户,同时引入信任度权重,降低了噪声数据的影响。实验结果表明,与Trust Walker模型相比,Referential User Walker模型的评分预测准确度有所提高。
基金the National Key Research and Development Program of China(Grant No.2017YFA0403300)the National Natural Science Foundation of China(Grant Nos.11874177,11874179,and 11574114)+1 种基金the Natural Science Foundation of Jilin Province,China(Grant No.20180101289JC)the High Performance Computing Center of Jilin University and High Performance Computing Cluster Tiger@IAMP(Theoretical Simulation Laboratory of Generalized Atomic,Molecular,and Energy Researches at Institute of Atomic and Molecular Physics).
文摘High-level ab initio calculations of theΛ-S states for aluminum monoiodide(AlCl)molecule are performed by utilizing the explicitly correlated multireference configuration interaction(MRCI-F12)method.The Davidson correction and scalar relativistic correction are investigated in the calculations.Based on the calculation by the MRCI-F12 method,the spin-orbit coupling(SOC)effect is investigated with the state-interacting technique.The adiabatic potential energy curves(PECs)of the 13Λ-S states and 24Ωstates are calculated.The spectroscopic constants of bound states are determined,which are in accordance with the results of the available experimental and theoretical studies.Finally,the transition properties of 0^(+)(2)-X0^(+),1(1)-X0^(+),and 1(2)-X0^(+)transitions are predicted,including the transition dipole moments(TDMs),Franck-Condon factors(FCFs),and the spontaneous radiative lifetimes.
