查询词典 similarity transformation

Currently familiar formulas called normalized correlation, which are used for evaluating the similarity degree of digital watermarks, showed their big shortage when expressing the similarity degree of extracted watermark and original watermark in inverse similarity.

摘要当前常见的作为评价数字水印相似程度公式的归一化相关值，在表示提取出的水印与原始水印反面相似时存在很大的不足。

Quantifying similarity/difference between two objects plays an important role in many contexts The quality of the similarity/difference scores can be improved by considering the semantic information related to the features of objects A flexible semantic distance function called X Dist is proposed, which can utilize the semantic information to measure the difference between two objects based on a solution to the transportation problem from linear optimization With a ground distance function for single features being a metric, X Dist is also a metric This property is very useful for making searching efficient, but is not investigated in the previous research Moreover, the experimental results show X Dist can be as good as the previously studied similarity measures in nearest neighbor searching, discriminative power and computing speed

量化对象间相似性/差别的方法具有广泛的用途，利用相关的语义信息能够得到更好的量化结果提出了一个量化对象间语义差别的距离函数XDist，它基于线性优化中的运输问题模型和相关的语义信息量化两个对象之间的差别在量化特征的差别函数是度量的情况下，XDist是一个度量，在提高搜索的效率方面具有优势，弥补了以往研究的不足，而且实验初步表明，此函数在最近邻查询效果、差别分辨力和计算速度方面能与已有函数相媲美1 引言量化对象间相似性/差别的方法具有广泛的用途，例如数据挖掘中的聚类；信息检索中的相似文档查询；协同过滤中的相似用户查询；CBR中的相似案例查询集合是对象特征表示的常用结构，集合的元素是与对象特征相关的项，它们可以

Cuspidate with 33％ identity and 50％ similarity to taxadien-5α-ol-O-acetyltransferase, 34％ identity and 52％ similarity to 10-deacetylbaceatin Ⅲ-10-O-acetyltransferase, and 33％ identity and 49％ similarity to taxane 2α-O-benzoyltransferase, respectively, moreover, it contained the conserved HXXXDG motif that is found in other transacylases, this sequence element has been suggested to function in acyl group transfer from acyl CoA to the substrate alcohol.

No.AF448807）在氨基酸水平与大部分植物来源的酰基转移酶具有较大的同源性，其中与东北红豆杉紫杉二烯-5α-醇-乙酰转移酶的一致性达33％、相似性达50％，与东北红豆杉紫杉10-去乙酰巴卡亭Ⅲ-10-0-乙酰转移酶的一致性达34％、相似性达52％，与东北红豆杉紫杉二烯2α-0-苯甲酰转移酶的一致性达33％、相似性达49％，并且在TS4的氨基酸序列中还发现酰基转移酶家族成员特有保守序列HXXXDG，这个序列单元被认为在将酰基CoA转移至醇类底物的过程中发挥作用。

Sequence analysis and homology alignment showed that MD1 had 93% similarity with matK in maize chloroplast genome, a gene encoding maturase included in type Ⅱ intron splicing of RNA transcript; MD2 had 99% similarity with gene PP2C, encoding serine / threonine protein phosphatase type 2C in extremely drought tolerant Sporobolus stapfianus; and MD3 had 99% similarity with rice gene encoding metacaspase, belonging to aspartic acid specific cysteine caspases.

序列分析和同源性比对表明，MD1与玉米叶绿体基因组中编码参与RNA转录本Ⅱ型内含子剪切的成熟酶的matK基因有93%的相似性，MD2与极端耐旱的Sporobolus stapfianus的丝氨酸／苏氨酸2C型蛋白磷酸酶基因PP2C的相似性达99%，MD3与属天冬氨酸特异性半胱氨酸蛋白酶类的水稻metacaspase基因有99%的相似性。

Results of sequence and homology analysis show that MD 1 has 97% similarity with mark in maize chloroplast genome,a gene encoding RNA maturase involved in group Ⅱ intron splicing of RNA transcript;MD2 has 99% similarity with the gene serine/threonine phosphorylase 2C in Sporobolus stapfianus;and MD3 has 99% similarity with rice the gene encoding metacaspase,an arginine/lysine-specific cysteine protease.

序列分析和同源性比对表明，MD1与编码成熟酶的玉米叶绿体基因matK有97%的相似性，MD2与极端耐旱植物Sporobolus stapfianus编码丝氨酸/苏氨酸蛋白磷酸酶的PP2C基因有99%的相似性，MD3与属精氨酸/赖氨酸特异性半胱氨酸蛋白酶类的水稻metacaspase酶基因有99%的相似性。根据MD2片段序列，结合电子克隆和RT-PCR方法，克隆出一条1731 bp的全长cDNA序列，它编码388个氨基酸。

The plum-apricot germplasm resources were analyzed by RAPD markers. The results showed that plum-apricot was more close to the related species with low polymorphism. The clustering results were indicated that most plum-apricots were more close to Chinese plum with the similarity of morphological description, thus the female parent for plum-apricot was probably plum in the occurrence naturally. The result of S allele-specific PCR amplification showed that plum-apricot had only one band with the similarity with plum, thus evolution similarity of plum-apricot was more close to plum than apricot.

5对参试杏梅种质资源的RAPD分析表明，杏梅与其近缘种之间亲缘关系较近，多态性相对较少；聚类分析结果显示大部分的杏梅与中国李的遗传距离较近，与形态学上的描述基本一致，因此杏梅种质资源在自然界中产生时，其母本可能为李；同时S等位基因的扩增结果显示杏梅与李的扩增条数一致，都为一条，因此推断杏梅与李的进化趋同性可能较杏更近。

Based on the structural-alignment and geometric similarity model, a new approach to Chinese word similarity computation is proposed. By separating the word concept description into two parts of attribute space and case space, which respectively process the structural alignment and calculate the distance of sememes aligned, the word concept similarity is made of the two parts distance with different weight.

基于结构对齐和几何相似模型，把词语概念描述分解为属性部分和语义角色部分，各部分结构分别对齐后，计算对齐义原的关系距离，加权组合计算词语的相似度。

Then, divided significant region into two groups:self-similarity and non-self-similarity blocks by fractal coding and pre-set threshold, picked up the robustest pseudo-Zernike moments among the pseudo-Zernike moments of the self-similarity blocks.Finally, embedded the watermark by quantizing the magnitudes of the robustest pseudo-Zernike moments.

算法首先利用归一化技术和不变质心理论在图像中提取出重要区域；然后利用分形编码及设置的阈值将重要区域分成自相似性块和非自相似性块并计算自相似性块的伪Zernike矩，从中选出最鲁棒的矩；最后通过量化调制伪Zernike矩幅值将水印嵌入其中。

The main contributions of the thesis are as follows: Using invariants and matrix theory, especially the special properties of eigenvalues and eigenvectors of the so called irreducible matrix, we put forward several effective new algorithms for the complete matching problem under Euclidean transformation, similarity transformation and general affine transformation.

论文的主要贡献如下：利用不变量和矩阵理论，特别是巧妙地利用了不可约矩阵的特征值和特征向量的特殊性质，提出了求解欧氏变换、相似变换和一般仿射变换下完全匹配情形的点模式匹配问题的几种非常有效的新算法。

We proposed a general theory and method for objects recognition based on geometric features and studied its application under orthogonal transformation, similarity transformation and affine transformation.

提出了基于几何特征进行物体识别的一般理论和方法，分别研究了它在正交变换、相似变换和仿射变换下的应用。

Finally it offers the analysis of the fault-tolerance system as well as its test verification.

这样，运行于空间环境中的系统的设计目标就是在保证系统实时性

However, it is still difficult to find out the real reason of the increase of the keratinized gingiva during the orthodontic extrusion whether it is due to the proliferation of the gingival tissue or to its elastic nature, that is because the proliferation of the fibroblasts as well as the connective tissue changes in volume and the intra-fibers spaces were all immeasurable in most of the studies.

然而，仍然难以找到真正的原因增加的角化牙龈在正畸挤压它是否是由于扩散的牙龈组织或其弹性性质，这是因为增殖的成纤维细胞以及作为结缔组织的变化量和内部纤维空格都是不可估量的，大多数的研究。