- 凭样检验
- base: adj. 1.贱的，劣的；卑下的，低级的；卑鄙的。 2. ...
- sample: n. 1.样品，货样。 2.标本；榜样，实例。 3.【统 ...
- population-based sample: 选自人群的样本
- based: 基准; 立基于; 是过去分词; 向基底的; 以...作基础,基于.; 以……作基础,基于……; 以…为基础的
- based on: 此处; 基准样式; 以...为基础,根据; 以…为基础
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based on sample中文什么意思
- 凭样检验
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例句与用法
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- Based on sample of the index from april 3 , 1991 to may 31 , 2001 , arima models have been built with tsp computer software guided by route of " from general to specific " . the models built have better fit goodness and one point forward prediction is highly precise . but ultra - sample prediction by c + + program shows prediction precision reduces fast as the length of prediction grows , long term prediction of the index is impossible
建模表明利用tsp统计软件结合从“一般到特殊”的建模方法，所建的模型对已有数据的拟合较好，向前一步单点预测准确性较高，但利用c语言程序进行进一步分析表明时间序列分析模型对深圳成分指数的长期预测效果明显降低。 - The controlling part of the comprehensive measuring instrument is 16 bits single - chip microprocessor 80c196kc . it is based on sampling theory and uses synchronous sampling algorithm to measure ac parameters of power system . it has many advantages as followed : complete functions , perfectperformance , portability , high - reliability , low cost and so on
该仪器以16位单片机80c196kc作为核心控制器件，采用同步采样法测量理论及实时数据处理方法，具有功能齐全、可靠性高、性能价格比高、便于携带等优点。 - Samples for strontium isotopic screened were selected by way of the test of cathodoluminescence , observation of thin sections , and analysis of sr and mn . the mn / sr value of all samples presented in this paper are less than 2 , and the cathodoluminescence is dull , however , the samples from the cambrian underwent diagenetic alteration to a certain degree , and the plotted points of the thickness and 87sr / 86sr value are somewhat discrete . the strontium isotope evolution curve drawn from the data with relatively low 87sr / 86sr value are consistent with other curves based on samples from different areas of the world , supporting the notion of global consistency of strontium isotope composition of marine carbonates
根据锯同位素地层学的基本原理，利用已有的锯同位素演化曲线，笔者确定重庆秀山寒武系剖面寒武系底界、下一中寒武统界线和中一上寒武统界线都应适当下移；另外尝试确定了重庆秀山寒武纪剖面一些关键点的年龄，累积厚度1380m处的年龄为503 ? 509ma ，累积厚度1900m处的年龄约为500ma ，这对秀山寒武系剖面下、中寒武统和中、上寒武统界线的确定具有参考价值。 - Then it describes the framework of dm system , focusing on the analysis of three most common web dm technologies . because web daily record mining model is of great deficiency : such as low accuracy , high cost and inefficiency , it is unfit for electronic documents . vector space model ( vsm ) as well as document filtration based on sample leaning is actually a way of documentary comparison and model filtration , in this way vector dimensions as well as their arithmetic cost are very huge but ineffiently
接着描述了数据挖掘系统的原型框架，并着重对最常用的三种web数据挖掘技术进行了分析： web日志挖掘采用的模型有较大的缺陷：精度较低、模型代价太大、效率不高，不适合电子文档的数据挖掘；向量空间模型vsm法和基于示例学习的文档过滤法其实都是一种文档比较、过滤模型的方法，这种方法的主要缺陷是向量的维数和计算开销非常巨大，挖掘效率低。 - It makes sampling data regularized by means of man - machine interactive mode and procedure method , respectively . the driven data of the cutter guide is generated , which is based on sampling data processed . it proposes an intelligent data reduction algorithm which bases on the combination of straightness of curves , equidistance and distance deviation principle
首先采集并分析了内轮廓数据,分别运用程序处理方式和人机交互方式实现采样数据点的规则化处理;根据处理后的测点数据生成磨头驱动数据;并提出了一种基于曲线曲率、等距及距离偏差带的自适应数据压缩方法。