| 1. | Through assigning every feature an appropriate relevant weight , a better classification performance can be reached
通过赋予每个特征一个恰当的权值可以提高分类的效果。 |
| 2. | Experiment results show that the proposed method achieves the better classification effect and the better posterior probability distribution than other methods
实验结果表明，与同类算法相比，所提出的基于最大熵估计的概率建模方法具有优良的性能。 |
| 3. | As the conventional vein analysis method can only partly reflect some of the vein properties from the remote sense images , the best classification results can not be obtained
而常规的纹理分析方法由于只能部分地反映遥感图像的某些纹理性质，并非具有最佳分类效果。 |
| 4. | One is weighted ; another is not weighted . experimental results show that it can obtain better classification , as well as the recognition results of mix pixel are improved at some degree
实验结果表明，采用加权的融合方法，可以取得更好的分类效果，对混合像元的识别也有一定的改善。 |
| 5. | But the value of a is given directly by domain expert based on experience or requirement , which depend on expert ' s knowledge excessively , therefore do not gain the best classification result possibly
而它一般由领域专家根据经验或需要直接给出，这种人为的参与过分依赖于专家知识，从而可能使实际分类结果在规则数、准确率方面达不到最优。 |
| 6. | The features are eventually calculated by the euclidean norms of the clusters . the combination of features extracted from wave structures , wavelet coefficients and frequency spectrum get better classification result than one kind of feature
本文还提取了舰船辐射噪声的波形特征，包络小波分解系数频率特征并与前述能量特征相结合，取得了比单个类型特征更好的分类效果。 |
| 7. | The radar targets identification based on svm is studied in chapter 5 . with the balance of the empirical risk minimum and complication , the method has a better classification performance . the validity of these methods are verified by experiments on simulated data
支持向量机方法在理论上摆脱了bp网络的缺陷,同时实现了经验风险和推广能力的折衷,实验结果证明了该方法的有效性。 |
| 8. | Simulation results show that the rbfnn has better classification performance . ( 2 ) grasp force planning algorithm . by the sumt technique , this dissertation provided a minimum grasp force algorithm to solve the multifingered grasp force problem
首先根据已有信息建立了抓取模式的知识库,然后分别采用bp网络和rbf网络研究了抓取模式的分类问题,仿真结果表明后者具有更好的分类性能; ( 2 )抓取的力规划。 |
| 9. | Visual interpretation , on the other hand , usually produces better classification results that are more compatible with traditional lup . the disadvantage of this approach is the high demand on human resources and time if the production of lup relies entirely on visual interpretation
另一方面，目视解译通常能产生与传统土地利用图相容、效果更佳的分类。但是，如果完全依靠目视解译来绘制土地利用图，则弊端极为明显，即：对人力资源和时间的要求过高。 |
| 10. | ( 2 ) the influence to classification result is highly effected by using different classifier , for example , the center - vector algorithm obtains better classification results than other two algorithms . with the character feature , the average recall is 80 . 73 % , and the average precision is 82 . 94 % , and with the chinese - word feature , the average recall is 83 . 6 % , and the average precision is 85 . 97 % . different corpuses influence the classification result . for example , the average recall is 89 . 31 % and the average precision is 88 . 33 % , by using the news web pages as corpus from the web site " www . sina . com . cn " , which adopt the center - vector algorithm to structure classifier and select chinese - word as feature
对三种分类器分别以字、词为特征进行分类测试、分析发现：使用相同的分类算法，用词作为特征项，比以字作为特征的分类效果好；用不同的算法构造分类器对分类效果的影响很大，如中心向量算法在字、词特征下的分类效果优于其他两算法；在以字为特征的情况下，该算法的平均查全率80 . 73 ，平均查准率82 . 94 ；在以词为特征的情况下，该算法的平均查全率83 . 6 ，平均查准率85 . 97 ；选用语料不同对分类效果也有影响，如用新浪网( www . sina . com . cn )网页语料进行测试，使用中心向量法分类器和词作为特征的情况下，平均准确率为89 . 31 ，平均查全率为88 . 33 。 |
