axiom of subsets

Method of Infrared Spectrum Analysis of Hydrocarbon Mixed Gas Based on Multilevel and SVM-Subset;

层次式SVM子集含烃类混合气体光谱分析方法

This paper discusses the problem of the cardinality of the sums and differences of subsets of integers.

考虑了整数群子集自身和及自身差势的问题,基于对前人给出的几类整数群上超差集合构造的研究,通过对典型有限和超差集合A1的有限分解,即A1={0,2}∪{3,7,11,…,4k-1}∪{4k,4k+2}∪{4},其中k是不小于3的正整数,证明给出了整数群上一类无限的和超差集合的构造,使集合的势从有限上升为无限,拓展了前人的理论成果。

This paper analyzed the time complexity of traveling salesman problem, then put forward some improvement towards the genetic algorithm for solving this problem: dividing the population into some small subset and imposing heuristic crossover operator on the individual,which can inherit the good information of the parent individual well.

分析了旅行商问题的时间复杂度特点,针对用遗传算法求解旅行商问题中存在的一些问题提出了改进算法,此算法将群体分为若干小子集,并用启发式交叉算子,以较好地利用父代个体的有效信息,达到快速收敛的效果。

In order to construct a new practical and fast iterative image reconstruction method, the ordered subsets(OS) technique is combined with the least square(LS) reconstruction of images in medical tomography.

为推导一种新的快速图像迭代重建方法,首先将有序子集(orderedsubsets,OS)技术应用到最小二乘图像重建迭代算法(leastsquarereconstruction,LS);然后对仿真Phantom模型数据和实际医用正电子发射断层成像仪(PET)数据进行重建,并研究了在不同子集划分下的重建结果,同时分析比较了不同子集的选取对OSLS重建图像质量以及重建收敛速度的影响。

In this paper, we study the characterizations and properties of α-paraLindelf subsets, α-metaLindelf subsets and δ-paraLindelf subsets of a topological space and their behaviours under some mappings.

研究了拓扑空间的α－ｐａｒａＬｉｎｄｅｌ¨ｏｆ子集、α－ｍｅｔａＬｉｎｄｅｌ¨ｏｆ子集及δ－ｐａｒａＬｉｎｄｅｌ¨ｏｆ子集的刻画、性质以及在某些映射下的行为。

Application of evidence theory to the ship security assessment using fuzzy subset;

引入模糊子集的证据理论在船舶安全评估中的应用

An order on the setof fuzzy subsets in a ring;

环中模糊子集的一种序关系

The events of evidence body space were seen as fuzzy subsets,with the fuzzy probability introduced,and the opinion(or knowledge) of experts could be described much better,and the basic probabilityassignment was also given.

将证据体空间中的事件视为模糊子集,并引入模糊概率,更好地描述了专家意见(或知识),给出了质量分配函数的表示。

From the nonlinear equations of fluid mechanics,we derive a simplified nonlinear solution of momentum,corresponding the accumulation of the energy.

非晶合金内部微观不均匀，分布着大量微小有序原子集团（ｃｌｕｓｔｅｒ）和位错。

So, feature subset selection becomes one of the important research issues in the process of microcalcification identification.

因此,特征子集选择问题成为微钙化点病变类型识别中的重要问题。

The paper has introduced the concept of fuzzy entropy of fuzzy sets theory to image segmentation,and we give out one new image segmentation algorithm,that is according to the characteristic of infrared image,using a linear fuzzy subject function to calculate the maximum fuzzy entropy,then to fine the image segmentation threshold.

文中将模糊子集论中的模糊熵概念引入到阈值分割技术中去,提出了一种新的图像分割方法,即根据红外图像的特点,不需要计算灰度的后验概率,直接通过选取一线性隶属函数来计算最大模糊熵,进而确定图像分割阈值。

Through the caculation and analysis of the fuzziness and nearness of the fuzzy sets, the following conclusions are obtained: the uncertainties of germ terminal velocities are larger than grits ; the effects of sizes of germ and grits on the terminal velocities are more than water contents.

在此基础上建立了悬浮速度模糊子集及其隶属函数。