mean error

The investigation on average value error represented by arithmetic mean error of a series of measurement

用测量列的算术平均误差表示平均值的误差的实质探讨

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The quantizer can perform dynamic quantization for wavelet coefficients after the determination of the best quantization steps { qi} that minimize the average mean square error at a given bit rate.

在为DWT系数确定好一组使给定码率下均方误差（MSE）最小化的最佳量化步长{qi}后，该量化器将能够实现小波系数的动态量化。

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In the forest stand whose crown closure is under 0.5, the average value of mean square error is 0.502m, distributed between 0 to 0.7m and the frequency is 82.8% and the frequency whose mean square error is under 1m is 91.4%.

在郁闭度小于0.5林分中，平均中误差为0.502m，集中分布在0~0.7m范围内，频率为82.8%，中误差小于1m的频率为91.4%。

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It uses double resolutions of wavelet in time& frequency domains and the nonlinear fitting ability of neural network to compress practical disturbance signals, taking the compression rate and root mean squared error as evaluation indices.

利用小波时域和频域的双重分辨率和神经网络的非线性函数逼近能力，以压缩比、均方误差为压缩效果的评价指标，对实际扰动信号进行数据压缩。

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The result showed that the correlation ratio between actual township's total population and the total population calculated by spatialization equaled 0.91 and mean error percentage was 16.5%.

结果为通过空间化得到的各乡镇的人口数与各乡镇的实际人口数的相关系数为0.91，平均误差为16.5%。

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The average mean square error of height anomaly is ± 0.173 m in three areas.

3个地区高程异常中误差平均值为±0.173m。

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Discussion on the total mean square error of gravity survey in Mountainous Region

山区重力测量总均方误差的讨论

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The main purpose of this paper is to give a mean value estimates of error terms of number theoretic function.

主要目的是给出一个数论函数误差项的均值估计。

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mean error of porosity by kerosene mass method and helium porosimetry method is 8.5%, and the same by ct dual scan method and kerosene mass method is 7.8%. this shows that measuring porosity of core by ct is successful.

饱和煤油法与氦孔隙计法测量孔隙度之间的平均误差为8.5%，CT两次扫描法与饱和煤油法之间的误差为7.8%，说明利用CT测量岩心的孔隙度是成功的。

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Meanwhile the average of mean square error of spectrums within 46 spectrum bands is reduced to 9.69.

46个谱段的光谱失真均方误差平均值减小到9.69，有效地保护了光谱信息。

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By optimizing the mapping scheme between source and channel modulation symbols in a joint source-channel coding/ modulation system, under the distortion measurement of end-to-end mean square error, the proposed scheme has better performance than that of the traditional tandem coding system.

在信源-信道联合编码/调制中，通过优化信源和信道调制符号间的映射关系，在端到端均方误差的失真度量标准下，可以得到比传统级联编码系统更好的性能。

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The matching error function based on subblock mean with the constant subblock division costs almost the same time to different matching images, which is very suitable for the real-time applications such as video compression.

子块划分的恒常性，也保证了基于子块均值的匹配误差函数对于不同的匹配图像所消耗的时间大致相同，非常适合于实时视频压缩等应用。

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Secondly three quantitive criteria: equivalent mean error, equivalent variance error and equivalent skewness error to measure the first to the third moment of two histograms and obtain the final results of chosen algorithms are proposed.

其次提出等效均值偏量、等效方差偏量、等效偏态差三个检验指标，对经第一步选择出的方法做进一步定量评价，从而得到最终的算法性能检验结果。

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