基于扩展AUC量度模型的本体算法

通过最小化扩展的AUC量度得到最优排序函数,从而将本体图(或多本体结构图)中每个顶点映射成一个实数,通过比较本体顶点对应实数间的差值判断概念间的相似程度.实验表明:新算法对于本体相似度计算和在不同本体间建立映射是有效的.     

基于变换模型的本体相似度计算与本体映射（英文）

本体相似度计算是信息检索的重要研究课题并广泛应用于计算机科学的诸多领域.运用变换模型提出本体相似度计算和本体映射的新算法.通过排序学习函数,将本体图映射成实直线,将本体图中的顶点映射成对应实数.通过比较本体图中顶点所对应实数的差值来判断两个顶点的相似程度.两个实验显示,所提出的算法对计算本体相似度和建立本体映射是有效的.     

基于变换模型的本体相似度计算与本体映射(英文)

本体相似度计算是信息检索的重要研究课题并广泛应用于计算机科学的诸多领域.运用变换模型提出本体相似度计算和本体映射的新算法.通过排序学习函数,将本体图映射成实直线,将本体图中的顶点映射成对应实数.通过比较本体图中顶点所对应实数的差值来判断两个顶点的相似程度.两个实验显示,所提出的算法对计算本体相似度和建立本体映射是有效的.     

基于BMRM迭代排序方法的本体学习算法

本体作为一种结构化数据存储和表示模型已成为信息检索领域的研究热点,并被应用于生物医学、地理科学、社会科学等诸多领域。提出基于BMRM迭代排序学习方法的本体相似度计算和本体映射算法,利用BMRM迭代得到最优参数向量,由此得到排序函数,将本体图或多本体图中的顶点映射成实数,通过两顶点对应实数间的差值来确定它们对应概念间的相似度。最后,将算法分别作用于GO本体和计算机软件本体,通过实验数据对比说明新算法对特定的应用领域具有较高的效率。     

基于primal RankRLS方法的本体映射算法

本体映射作为实现多本体间相互操作的重要手段,已广泛应用于诸多领域.应用原始RankRLS算法,将多本体图映射到实数轴,由此将本体图中每个顶点都映射成实数.通过比较两概念对应实数间的差值得到本体映射.实验表明,该算法有较高的效率.     

模糊本体中的模糊相似度计算

模糊本体作为不确定性知识表示模型,被广泛应用于计算机科学的各个领域;给出一种新模糊本体中模糊概念的模糊相似度计算方法;首先计算模糊本体图中边的模糊权重,从而得到模糊权矩阵;由正则经验模型计算模糊拉普拉斯矩阵次小特征值对应的特征向量,从而将模糊本体中的每个模糊概念映射到实直线,通过模糊概念对应实数之间的差值来得到它们的相对模糊相似度。     

基于k-部排序学习方法的本体映射算法

本体映射作为实现多本体间相互操作的重要手段,已广泛应用于诸多领域。利于k-部排序学习算法得到最优排序函数,从而将多本体结构图中每个顶点映射成一个实数,通过比较来自不同本体顶点对应实数间的差值判断概念间的相似程度。实验表明：该方法对于在不同本体间建立映射是有效的。     

成对排序本体学习算法

本体作为一种结构化数据模型已广泛应用于知识表示和信息处理,并成为近几年计算机领域的研究热点.提出基于成对排序学习方法的本体相似度计算和本体映射算法,利用Mahalanobis距离函数得到计算模型,通过梯度下降策略得到模型的最优解,从而将本体图或多本体图中的顶点对映射成实数来表示它们的相似程度.通过两个实验表明,新算法对特定的应用领域具有较高的效率.     

基于图学习的本体概念相似度计算

根据边的类型、顶点深度、边的密度和强度以及边关联的两顶点的属性计算有向边的权重,通过图学习正则化模型得到优化函数.将本体结构图中每个顶点映射成一个实数,通过比较实数间的差值判断两概念的相似程度.实验表明该方法对于计算本体概念间的相对相似度是有效的.     

基于核矩阵优化方法的本体算法

本体相似度计算和本体映射被广泛应用于查询扩展和图像检索中,已成为信息科学研究的热点内容,其核心为计算本体图中顶点间的相似度。用核矩阵表示本体图中每一对顶点的相似度,根据相邻顶点相似度大、不相邻顶点相似度小的特征,结合转换函数的光滑性得到核矩阵优化模型,求解模型得到最优核矩阵。将此方法分别应用于生物GO本体和数学学科本体,通过实验表明新本体相似度计算和本体映射算法有较高的效率。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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