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悲观估计
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  pessimistic estimate
     Based on a study of the rectification of the inflection point of curves, fuzzy compensation and the optimistic and pessimistic estimate of the production trend, fuzzy forecasting techniques of logistic curves are developed.
     本文通过对Logistic曲线拐点的调整、模糊补偿和生产趋势乐悲观估计等方法的研究,建立了Logistic曲线Fuzzy预测方法。
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  “悲观估计”译为未确定词的双语例句
     In the data mining prototype system, Apriori algorithm of association rules mining, ID3 algorithm of decision tree classification, C4. 5 pessimism estimate algorithm of decision tree classification and C4. 5 reduced-error pruning algorithm of decision tree classification are realized.
     在数据挖掘原型系统中,实现了关联分析的Apriori算法、分类的ID3决策树算法、C4.5的悲观估计决策树算法和C4.5决策树的消除误差修剪算法(reduced-error pruning)。
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  相似匹配句对
     b) a G-M estimator of ω'1α, ω'2β and ω'1α+ω'2β under L (Xβ, Aα; δ21V, δ22U} respectively.
     b)G-M估计
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     An Estimator of Reflection Coefficients
     反射系数的估计
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     pessimistic and indifferent.
     悲观、冷漠。
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  pessimistic estimate
A pessimistic estimate of the time required for an eye to evolve.
      
For the calculations here, we used a slightly more pessimistic estimate of V-ch1 = Vch2 = 1.5.
      
However, it would be prudent to allow for the more pessimistic estimate of the Panel.
      
In the version of the algorithm that participated in the challenge, we used a more pessimistic estimate of the positive class probability for PNB.
      
This figure represents a pessimistic estimate of the telescope confusion limit for broadband spectral-line work.
      
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Based on a study of the rectification of the inflection point of curves, fuzzy compensation and the optimistic and pessimistic estimate of the production trend, fuzzy forecasting techniques of logistic curves are developed.Inspection of examples shows that the techniques,easy in operation and generally applicable,are ideal for forecasting harbour handling capacity.

本文通过对Logistic曲线拐点的调整、模糊补偿和生产趋势乐悲观估计等方法的研究,建立了Logistic曲线Fuzzy预测方法。经实例检验表明,该方法具有可操作性好、通用性强的特点,是一种理想的港口吞吐量预测方法。

The effect of the multiple-user interference, the receiver shot noise, ambient light interference, the receiver dark current and the thermal noise are taken into account. A probability union bound and the pessimistic estimation method are used that decision errors may occur on condition that two decision measurements are equal. The upper bounds of the bit error (BER) of infrared Overlapping Pulse-Position Modulation (OPPM)/Code Division Multiple Access (CDMA) correlation receiver without optical hard-limiters,...

The effect of the multiple-user interference, the receiver shot noise, ambient light interference, the receiver dark current and the thermal noise are taken into account. A probability union bound and the pessimistic estimation method are used that decision errors may occur on condition that two decision measurements are equal. The upper bounds of the bit error (BER) of infrared Overlapping Pulse-Position Modulation (OPPM)/Code Division Multiple Access (CDMA) correlation receiver without optical hard-limiters, with single optical hard-limiters and with double optical hard-limiters for arbitrary λa and λc are derived. Moreover, the performance analysis and comparisons for aforementioned three receivers are presented by computer simulation.

考虑系统存在多用户干扰、背景光干扰、接收机散粒噪声、暗电流和热噪声的情况下,使用概率的 并集界以及有两个判决量度相等也发生判决错误的悲观估计法,推导任意λa,λc下红外OPPM—CDMA 系统的相关接收机、单光硬限幅器相关接收机和双光硬限幅器相关接收机的误比特率上限.最后通过计算机 仿真对该3种接收机的误码特性进行分析和比较。

According to the transmitted signal formats of a single user and the multi-pulse detection receiver in an optical direction detection overlapping pulse position modulation code division multiple access system, the probability union bound and the pessimistic estimation methods that decision errors occur on condition that two decision measurements are equal are utilized to derive the upper bound on the bit error of OPPM-CDMA multi-pulse detection receiver for arbitrary λa and λc signature codes such as optical...

According to the transmitted signal formats of a single user and the multi-pulse detection receiver in an optical direction detection overlapping pulse position modulation code division multiple access system, the probability union bound and the pessimistic estimation methods that decision errors occur on condition that two decision measurements are equal are utilized to derive the upper bound on the bit error of OPPM-CDMA multi-pulse detection receiver for arbitrary λa and λc signature codes such as optical orthogonal codes and extended quadratic congruence codes. Moreover, the performances of OPPM-CDMA multi-pulse detection receiver in terms of bit error is compared with those of traditional OPPM-CDMA correlation receivers with different parameters.

根据光OPPM-CDMA信号格式和多脉冲检测接收机原理,使用概率并集域以及有两个判决量度相等也发生判决错误的悲观估计法获得基于任意λa、λc地址码(如光正交码、扩展二次同余码)的光OPPM-CDMA多脉冲检测接收机的误比特率上限,并比较了不同参数下OPPM-CDMA多脉冲检测接收机与OPPM-CDMA相关接收机的误码特性。

 
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