查询词典 similarity principle

In this paper, we study various features of hyperlinked web pages including indegree and outdegree distribution, content similarity, link similarity and etc.

在本文中我们研究了链接网页间多种属性，包括网页的入度、出度分布，内容相似度和链接相似度等，并且引入了语义相似度的概念。

In the matching stage, the angle of feature vectors is used as the similarity measure in the high dimensional space directly. This similarity measure is invariant to the linear transformation of feature vectors. Compared with SIFT and normalized correlation, the proposed method needs no primary features such as edges, corners, gradient or shapes which are very unstable in low contrast and low NSR images.

在匹配过程中，以向量之间夹角的大小作为相似度度量，直接利用图像的灰度信息在高维向量空间中考虑图像之间的相似度，克服了在低照度、低信噪比的图像中求边缘、角点、梯度和形状等特征的困难，不受向量模大小以及向量平移的影响，即相似度的计算是线性光照不变的。

The cattle BMPRⅠA gene full-long cDNA is 4067bp, which encodes 532 amino acids and shares 91%, 93%, 89%, 88%, 91% and 82% similarity in nucleic acid sequences and 97%, 95%, 96%, 95%, 97% and 91% similarity in amino acid sequences with human, chimpanzee, mouse, rat, dog and red jungle fowl, respectively.

克隆得到了牛BMPRⅠA基因4067bp的cDNA全长序列，通过核酸序列分析发现，该基因编码532个氨基酸，与人、黑猩猩、小鼠、大鼠、犬和红原鸡在核酸序列上分别有91%，93%，89%，88%，91%和82%的同源性；在氨基酸序列上分别有97%，95%，96%，95%，97%和91%的同源性。

The methods of computing for similar coefficient were Discriminance of Minimal Difference of Parameters, Discriminance of Limen of Tree Compositive Character and Synthetic Weight Similarity of Parameters. The contribution of all parameters were considering as same for DMDP and DLTC, but it estimate s the similarity between parameters according to the limen for DLTC. DMDP was based on the principal component analysis for wood transverse section micrograph characters and computing the similar coefficient according to the contribution of every parameter.

其中最小差值差数判别法与树种综合特征阈值法是将每个特征参数对木材横切面显微图像特征的贡献率视为一致，只是树种综合特征阈值法是以阈值的大小来判断特征的相似性，而综合加权相似法是建立在对木材横切面显微图像特征参数的主成分分析的基础上，根据每个特征参数的贡献率大小计算相似系数。

Based on the Web site Link Structure, in view of the transition probability matrix in Markov prediction model, a measurement method based on row similarity and column similarity was proposed.

基于网站链接结构，针对Markov预测模型中的转移概率矩阵，提出一种基于行相似与列相似的相似度度量方法。

This approach was based on the NonSubsampled Contourlet Transform. The means and variables of NSCT coefficients matrix in different subbands and various directions were extracted to form the feature vectors which were regarded as indexes of texture images in image database. Two similarity functions were used to compute the similarity between images. A texture retrieval system based on query image was developed.

该方法利用非下采样Contourlet变换对图像进行分解，提取不同子带和不同方向变换系数矩阵的均值和方差为特征向量，作为数据库中纹理图像的索引，并利用两种不同的相似度函数计算图像之间的相似度，建立了一套基于示例查询图像的纹理图像检索系统。

Concept semantic space and similarity measure based on it Concept semantic space and similarity measure based on it is proposed.

概念语义空间与相似性度量提出了概念语义空间的概念及其建立在该空间基础上的相似性度量。

Similarity search in many new database applications can generally be referred as similarity search in metric space.

3对允许时间偏移的序列间相似性搜索，由于可以处理异常数据以及允许不同长度的时间序列间进行匹配，因此应用日益广泛。

A clone from each genotype was randomly selected as representative for sequencing. The obtained 16S rDNA gene sequences had a similarity of 87%-100% with those in the GenBank (www. ncbi. nlm. nih. gov), and more than half of them had a similarity lower than 97%, being of new species. Based on phylogenetic analysis, the bacteria in the two soils were classified into 10 groups, with 5 groups in common. The dominant bacterial groups in the two soils differed obviously. In primeval forest soil, the dominant group was Proteobacteria, which had 39 genotypes, occupying 58.0% of all the clones; while in the soil of degraded ecosystem the dominant groups were Acidobacteria and Proteobacteria, which had 19 and 15 genotypes occupying 32.5% and 30.5% of all the clones, respectively. In the soil of degraded ecosystem, Proteobacteria group decreased while Acidobacteria group increased markedly, compared with those in primeval forest soil.

从每种基因型中随机选择一个克隆子作为代表进行测序分析，所有序列与GenBank数据库中序列的同源性为87%~100%，且两样地中均有超过一半的基因型序列与数据库中已知序列同源性低于97%，属于分类在"种"地位上的新发现细菌；通过系统发育研究将两样地的细菌分为10大类群，两样地共同拥有5大类群，但两样地的细菌优势类群明显不同，原生土壤为Proteobacteria，含39种基因型，占总克隆子数的58.0%，退化生态系统土壤为Acidobacteria和Proteobacteria，分别含19种和15种基因型，占总克隆子数的32.5%和30.5%；与原生土壤细菌类群相比，退化生态系统土壤Proteobacteria类群明显减少，Acidobacteria类群明显增加。

Through obtaining anonymous users' browsing path set, on the basis of the new definition of path similarity, building the users' browsing path similarity matrix, and based on this, designing anonymous users' browsing path clustering algorithm to obtain the clustering result set and calculate various cluster centers, the typical anonymous users' browsing path was got.

通过获取的匿名用户浏览路径集，依据新的路径相似度定义，建立用户浏览路径相似度矩阵，并在此基础上设计实现了匿名用户浏览路径聚类算法，获得聚类结果集，并计算各类的中心，得到典型匿名用户路径。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？