基本类
- 与 基本类 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Then,it notices that all infi-nite matrix operators between the sequence spaces with the WGHP may form a topologicalalgebra.It also studies the weak sequentially completeness of this class of topological al-gebras and some other basic properties.
其次发现了具有WGHP序列空间上无穷矩阵算子所成之拓扑代数,并研究了这类无穷矩阵拓扑代数的弱序列完备性等一些基本性质。
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A large scale manually annotated Chinese corpus and a number of well-conducted experiments were used to identify the following points of the hidden Markov model based part-of-speech tagging scheme for Chinese texts. The results are:① The Bigram model is better than the Trigram model in terms of the performance-cost ratio.② An annotated corpus of about 70000 words tokens would be sufficient for training the Bigram model, to produce system performance of about 93% tagging accuracy for ambiguous word tokens and 97% tagging accuracy for all word tokens in the texts.③ The Bigram model can be suited to different application domains quite well.
论文在经过人工分词和词类标注的大规模汉语语料库的支持下,通过一系列对比实验,对基于隐Markov模型的汉语词类自动标注算法进行了系统的考察,并得出结论:① Bigram模型的"性能价格比"较Trigram模型更令人满意;②以7万词次左右的标注语料库训练Bigram模型即已基本够用(此时,兼类词词类标注正确率及文本词类标注正确率分别可达93%和97%以上);③ Bigram模型对不同领域具有一定的适应性。
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While I was writing this program I also started to develop my basic set of DirectDraw wrapper classes.
当我写这个程序,我也开始发展我的DirectDraw的包装类的基本设置。
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The following results are made from this research: Assessing data quality and band combination of different bands in line with geo-target features in desertification areas, and determining basic bands for desertification monitoring. And understanding and studying the spectral features and variation rules of geo-targets in the experimental area, raising that it is the basis of geo-targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo-targets, realizing that in a great extent spectral-integrated-form-based classification method can remove the phenomenon of "different spectrum with same objects" resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo-target with similar spectral forms and much different values of whole reflectionratio. It is suggested that "red edge" range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel-based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. The remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed.
研究结果如下:首先针对荒漠化地区的地物特征,对高光谱数据不同波段的数据质量、波段组合进行了评价,提出了适用于荒漠化监测的基本波段选择集;初步了解和掌握了研究地区的地物光谱特性及变异规律,进一步明确了掌握地物光谱特征和变异规律是用成像光谱仪数据提取地物信息的基础;发现了基于光谱整体形状的分类方法在很大程度上能够消除由于传感器、地物目标观测方向之间的角度变化引起的反射率曲线整体平移的&同物异谱&现象,对于谱形相似而整体反射率的值相差较大的两类地物,通过引入均值和方差图像参与分类得到解决;研究还表明在植被&红边&范围内的波段是进行荒漠化监测的主要特征波段,这些波段与植被生物量和盖度都有密切的关系,是开展精细植被分类研究和植被定量反演的重要基础;像元的导数光谱分析可以消除土壤背景的影响,是进行植被生物量和盖度定量反演的有力工具;建立了荒漠化监测主要评价因子的定量反演模型,并分析了模型的适用性。
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The NJ tree assumably reflected their geographical distribution and breeding actuality.
聚类结果基本反映了各鸡群的地理分布和选育现状。
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The basic idea of Frequent-Wavelet is to pass time series through the atrous smooth filters set, and then cluster the derived subsequences, so the problem of FTS mining is converted to the problem of FIS mining.
Frequent-Wavelet算法的基本原理是使时间序列通过多孔平滑滤波器组,然后对来自多个尺度序列的子序列进行聚类,从而将时间序列的频繁模式挖掘问题转化为项目序列的频繁模式挖掘问题。
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The analysis results of species in avifaunal subregions of China by cluster method and PAE method were basically consistent, which supported two realms (palaearctic realm and oriental realm) of zoogeographical region divided by the line of Qinling Mountains.
用聚类方法和PAE方法对鸟类亚区分布格局的分析结果基本一致,都支持我国鸟类动物地理区系归属于古北界和东洋界,两界以喜马拉雅山脉和秦岭山脉一带构成两界的分界线。
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The reinforced compound nanometer apatite material is one kind of compound of nanometer apatite component and at least one kind of medical polymer material and formed in an azeotropic solution system.
纳米磷灰石增强复合材料及其制备方法。复合材料的基本组成为纳米磷灰石类成分与至少一种医用高分子材料成分在共沸溶液体系中形成的复合物。
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Flavonoids, derivatives of chromone or chromane, are built upon a C6-C3-C6 flavone skeleton in which the three-carbon bridge between the phenyl groups is commonly cyclized with oxygen. There are diverse group of plants containing flavone, isoflavone, flavonol, chalcone, ect.
黄酮类化合物系色原烷或色原酮的衍生物,其基本骨架具有C_6—C_3—C_6的特点,即指两个苯环通过中央三碳链相互连接而成的一系列化合物。
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It was designed to exploit the full discovery potential of LHC, to search for Higgs particle and heavy Wand Z-objects, for super-symmetric particles, for compositeness of the fundamental fermions, and to investigate the CP violation in B-physics.
寻找黑格斯粒子是ATLAS最主要的目的,同时它也将用来寻找较重的类W、Z玻色子、超对称粒子,研究基本费米子的结构以及研究B衰变中的CP破坏。
- 推荐网络例句
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Do you know, i need you to come back
你知道吗,我需要你回来
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Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.
1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。
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Chapter Three: Type classification of DE structure in Sino-Tibetan languages.
第三章汉藏语&的&字结构的类型划分。