查询词典 piecewise linearization

Using normal distribution transform probability model to represent a laser range scan.Not need features corresponded,but transform the discrete scan date to the piecewise continuous and differentiable probability density function,and using Newton's algorithm to optimize scan matching,so can build the 2D global map.

利用正态分布转换概率模型来表示激光扫描，不需利用特征对应，而是通过将扫描得到的离散数据点转换成分段连续可微的概率密度函数，并利用牛顿优化算法来进行扫描匹配，从而建立2维全局地图。

Because the piecewise linear chaos function is adopted in the encryption system, it is difficult to avoid the local linearity.

且在该加密系统中，由于采用了分段线性函数作为混沌函数，因此难以避免便于攻击的局部线性等特点。

The contour is second-order continuous piecewise cubic but not a linear function, and a storage structure of contour information was also studied.

研究结果表明：内插结果是具有整体二阶连续的分段三次函数而不是线性函数；该内插方法与常规方法相比，存贮结构节省60%~70%的存贮空间，并且更适用于基于等高线的各种地学分析。

At last ,the piecewise linear interpolation function is applied to deal with complicated constraints conditions for solving the objective function .The simulation results on the three gorges cascaded hydropower system long term optimal dispatch under the flood and dry power price and comparison with other algorithms show that it is greatly efficient to solve engineering optimal problems with complicated constraints.

针对模型中复杂的约束条件，采用分段线性插值函数实现了对目标函数的求解，并通过对丰枯电价下三峡梯级水电系统长期优化调度问题的计算及与其它算法的对比，验证了该算法可运用在解决具有复杂约束条件的工程优化问题中。

To obtain more practically optimal solutions for production planning in chemical enterprises, piecewise linear function and polynomial function were used to model nonlinear unit consumptions.The optimal solutions obtained by the two approaches were compared in case studies.

为了得到更切合实际的化工企业生产计划优化结果，采用分段线性函数和多项式函数对非线性单耗问题建模并进行比较。

After that, based on the CVaR optimization model with transaction costs, we simulate smoothly the piecewise linear function in objective function separately, and obtain the continuous smooth CVaR optimization model. As an application, we explain via an example when the smooth simulation model is applied in the big scale investment portfolio choice problems, its convergence and stability has the enhancement comparing with the above linear model.

其次，在带交易费用的CVaR最优化模型的基础上，将模型目标函数进行了平滑模拟，得到连续平滑的CVaR最优化模型，并经过实例说明，对于较大规模投资组合选择问题，经过平滑模拟后的模型其解的收敛性和稳定性较之原模型的解都得到了提高。

Each generator offers a piecewise linear supply function, within his capacity of generation, into the market and wishes to maximize his expected profit.

当电力市场需求函数表示为市场价格与有界随机需求冲击的非线性函数时，每个发电商在其发电容量范围内向电力市场提交一个分段线性供应函数，以获取最大化利润。

By constructing the piecewise linear function from samples, it is able to approximate the measured metric more precisely. Compared with current popular sampling algorithms, FASM algorithm can provide more precise estimation of metric under the same samples. In the condition of retaining the same approximation errors, our adaptive sampling methodology only requires fewer samples, which will save sampling costs considerably during sampling process.

与当前常用的抽样算法相比，在采集相同的样本数量情况下，本文的拟合模型对指标进行的估计更准确、稳定；而在保持相同的拟合误差时，自适应抽样算法则可显著减少所需采集的样本数量，节约数据采集过程的代价。

The improvements consist of two parts: 1 generalizing the PDE based approach to contrast enhancement to adapt to any specified stretch function for global and local contrast enhancement; 2 proposing a piecewise linear stretch function design method to achieve better histogram equalization.

改进包含两个方面：1 修改并推广了原有的基于PDE的灰度增强方法，使之可适用于任何设定的灰度拉伸函数；2给出了一种通用的分段线性拉伸函数设计方法，它较采用累积直方图作为灰度变换函数可达到更好的直方图均衡化效果。

Based on the factors of mass economy,the paper establishes a multi- warehouse location model which takes the sum of minimized supply costs,transport costs and fixed costs as the goal and within which supply costs are expressed by piecewise linear cost function,solves the model with a genetic algorithm and shows an example.

在考虑规模经济的因素下，以最小化项目的供货成本、运输成本与固定成本之和为总目标建立了一个多仓库选址模型，其中把供货成本用分段线性函数表示，体现了厂商存在的规模经济效应，并采用遗传算法对模型进行求解。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。