查询词典 similarity method

This method uses what Professor Salton has proposed as the vector spacial model to express text as an invisible vector in hyperspherical space.It makes use of certain pre-disposal methods (reduce the dimensions,clustering thesaurus,filtering out old-fashioned words) to reduce the dimensions.It usescosines to measure the degree of similaritybetween texts and uses the total similarity as the target convergence vector.It produces clustered results by using restricted iteratives to achieve partial perfection.

该算法用Salton教授提出的向量空间模型把文本表示成不可视的超球向量空间的一个向量，采用一定的预处理手段(降维、同义词归并、停用词过滤)完成维数约减，使用余弦相似度度量文本之间的相似度，并选择总凝聚度作为目标收敛函数，通过有限次的迭代达到局部最优，输出聚类结果。

In this paper, the 3-D finite element relocating mesh method is used to calculate the temperature field and the thermal creep stress field of spillway dam and mid level outlet dam in certain roller compacted concrete gravity dam, sensitivity analysis have been down with different parameters, such as placing temperature, the location of cooling pipe, cooling temperature, time for water supply, ascended-layer of concrete, intermissive time and different placing time, and the commendatory construction scheme have been put forward in such analysis; according by the test result on the two scheme of concrete aggregate combination (basalt as coarse aggregate and limestone as fine aggregate, basalt as coarse aggregate and basalt as fine aggregate), simulation analysis on temperature field and thermal creep stress field of the commendatory construction scheme have been down, and analysis have also been down on temperature field and thermal stress field of the two different aggregate combination, the result indicates that the spillway dam and mid level outlet dam which adopted these two aggregate combination can both satisfy the require of design crack resistance in concrete, furthermore limestone as fine is better than basalt as fine aggregate; the effect of summer water storage and winter water storage on the temperature field and thermal stress field have been analyzed, comparing with winter water storage, in summer water storage scheme the maximum tensile stress at abnormal concrete in upstream fill is decreased by 0.1～0.3MPa and there are no evidence change of the maximum tensile stress at other parts, which indicate that summer water storage is avail for the crack resistance of upstream fill; according to the simulation calculating result and comparing temperature simulation calculating results and temperature controlling measures of some similarity projects both completed and construction, synthesis appraise have been carried to the design temperature controlling measures of dam, and the temperature controlling measures of this project have been brought forward, all these have great reference value on the design of temperature controlling measures and the optimization of the construction scheme.

本文采用三维有限元浮动网格法仿真计算程序，对某碾压混凝土重力坝的溢流坝段和中孔坝段分别进行了三维有限元温度场和温度徐变应力仿真计算分析，对浇筑温度、冷却水管的布置方式、冷却水温、通水时间、浇筑升程和间歇时间、不同开始浇筑日期等参数进行了敏感性分析，在此基础上提出了推荐的施工方案；根据两种骨料方案(玄武岩粗骨料+灰岩细骨料方案；玄武岩粗骨料+玄武岩细骨料方案)的混凝土性能试验研究成果，对推荐的施工方案进行了温度场和温度徐变应力仿真计算，并对比分析了两种不同骨料情况下的温度场和温度应力，结果表明溢流坝段及中孔坝段采用上述两种骨料均能满足混凝土的抗裂设计要求，且灰岩细骨料优于玄武岩细骨料；计算分析了夏季蓄水和冬季蓄水对坝体温度场和温度应力的影响，夏季蓄水方案与冬季蓄水方案相比，坝体上游变态混凝土区域最大拉应力小0.1～0.3MPa，其他部位最大拉应力无明显变化，夏季蓄水对坝体上游面混凝土的抗裂有利；根据仿真计算成果并通过比较国内一些已建和在建的类似工程的温度仿真计算成果及采取的温控措施，对大坝的设计温控措施进行了综合评价，并提出了该工程的温控措施，对温控设计和优化施工方案具有重要参考价值。

The Nei's genetic similarity coefficient was calculated by DPS software, 7 species of Michelia were divided into three groups with UPGMA method.

应用Nei距离法计算各种间的相似系数，采用UPGMA法进行聚类分析，7种含笑种可分为3大类。

When inspects the connection degree between the objective project and the ideal point or negative ideal point is inspected, the existence of an opposit set is fully considered. By introducing the connection vector distance, the relative similarity scale is calculated, which to some degree improves the the traditional TOPSIS method.

该方法将理想点与负理想点视为确定不确定系统中相互对立的集合，在考察目标方案与理想点或负理想点的联系度时，充分考虑了对立集合的存在；并通过引入联系向量距离的概念，计算相对贴近度，从而在一定程度上克服了传统TOPSIS法的不足。

And the author summarized the main identifiable features at the genera level. Some pictures of new reported species have been drawn. In the thesis, the author studied its geographical elements, compared the species abundance, the generic similarity coefficient, the phytogeographical elrments,and analyzed the floristic spectrum using the method of Principal Component Analysis . According to the comparison between the area of Pangquangou Nature Reserve and other 8 areas, The abundance of the bryophytes of Pangquangou Nature Reserve lower than the other 8 area.

通过物种丰富度、属相似系数、区系谱主成分分析、区系地理成分分析等多种方法与内蒙古七老图山、山东崂山、福建鹫东麓、新疆东部天山和吉林省长白山、河南云台山、河北小五台山、滦河上游地区8个地区的苔藓植物区系进行了比较，发现庞泉沟自然保护区苔藓植物物种丰富度最低。

The invention provides a method and a device which are capable of remarkably improving tamber conversion quality and ensuring the similarity of the converted tamber.

本发明提出了一种能够显著改进音色转换的质量，并保证转换的声音相似度的方法和装置。

In order to solve the similitude problem of shaking table scale modle test of dynamic interaction of pile-soil-bridge structure in ground of soil liquefaction, based on the theorem of Bockingham π widely applied at present, the dimensional analysis method is used, and the constitutive strain-stress relationship of material between model and prototype and the dynamic response similarity of pile-soil interface are considered at the same time.

基于目前广泛应用的Bockingham π定理，主要采用量纲分析方法，并且结合考虑模型与原型之间的材料变形应力-应变本构关系及桩－土接触边界动力响应相似性，求解液化场地桩－土－桥梁结构动力相互作用振动台试验的模型设计相似关系，同时提出人工质量问题的解决办法。

Taking gyrating parts as an example,the cost estimating method based on similarity is verified and analyzed by the example.

以回转类零件为例，对基于相似性的成本估算方法进行了实例应用验证和分析。

Firstly, this thesis lucubrates in the method theory of character space and does a lot of experiments and researches in the two steps, character expressing and measure of similarity. Realize the object recognition system based on the character subspace, which adopts the effective and ameliorative means to solve the problems existing in the course of recognition such as illumination and pose estimation, so enhances the robustness of recognition.

首先深入研究特征空间方法原理，并对识别过程中的两个关键步骤：特征表达和相似性度量做了具体实验和研究工作，实现基于特征空间目标识别系统，其中采用了几种有效的改进方法，有效的解决了识别过程中存在的诸如光照以及3D目标姿态估计等问题，提高了识别鲁棒性。

A method of computing certain inaccessible distances or heights based on similarity of geometric figures and attributed to Thales presaged more abstract approach to geometry taken by Euclid in his Elements , one of the most influential books ever written.

一种方法计算某些无法距离或高度相似性的基础上几何数字和归因于泰勒斯预示较抽象的做法所采取的欧几里得几何的元素，其中最具影响力的书籍写。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失