It is more reasonable that the dynamic performance index both in frequency domain and in time domain should be calculated from model calculated frequency response and unit-step response.
由参数模型计算的阶跃响应与频率特性上计算时域与频域的动态性能指标才比较合理。
Prediction probabilities for each context in the model are calculated from frequency counts, which are updated adaptively.
对模型中每个上下文的预测概率从频率数计算,进行自适应更新。
Since it is a range predicate and there are no frequency and histogram statistics available, the filter factor is calculated with the basic statistics information HIGH2KEY and LOW2KEY.
由于它是范围谓词,而且没有频度和直方图统计数据可用,过滤因子是用基础统计信息HIGH2KEY和LOW2KEY计算得出的。
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