查询词典 birational invariant

On defining the conditional threshold of discretized density evolution, a method for designing the time-invariant quantized decoder with finite levels, which can approach the optimal time-varying one and hence the continuous decoding, is proposed.

应用Shannon率失真理论以及密度进化理论，阐述了最佳量化译码的时变特性，建立了离散密度进化的条件阈值概念，提出了二元输入对称信道上逼近最佳时变量化译码、进而接近连续译码的时不变量化译码设计方法，推导了量化和积算法与最小和算法的等价条件，从误码率性能、错误平层和平均迭代次数等三个指标全面衡量量化译码性能； 5。

The state space model has a Gamma-Gamma type invariant conditional distribution. A cost model subject

我们将在一个具有Gamma-Gamma形式的状态空间模型假设下，结合一个包含移除错误成本及软体风险成本的成本模型来进行讨论。

Experimental results prove that extracted features using phase congruency is invariant to image illuminance and noise.

实验证明，相位叠合提取特征对图像的照度以及可能出现的噪声是不变的。

Experiment proved that the method based on phase congruency is the one that is invariant to illumination and magnification, robust to noise.

对要匹配的两幅图像，先计算它们的相位叠合，把它们的相位叠合映射成256个灰度级，在这一对新图像上尝试FMI-SPOMF算法，结果比较满意。

First, we extract the illuminance invariant feature using the phase-only reconstruction and the phase congruency analysis.

该方法首先利用单纯相位谱重构和相位一致性分析实现光照不变特征提取，然后利用PCA方法实现人脸图像的降维表示，降低识别所需的计算量。

In order to recognize the 2D shapes, we proposed a set of perspective invariants of a pair of coplanar conics in this paper, we suggest a perspective invariant representation of general planar curve based on ellipse, and give an algorithm using the invariants and the representation to recognize 2D shapes.

为了实现二维形状的透视投影不变性识别，本文推导出了一种共面二次曲线对的透视投影不变量，提出了一种基于椭圆的平面曲线的透视不变性表示方法，并且给出了用该不变量和不变性表示方法实现二维形状识别的算法。

We focus on a particular class of subsets in the above topological space which is named support-bounded constructible subset as an analogue of constructible subsets in module variety and is invariant under derived equivalence.

我们研究了复形拓扑空间的一类特殊的子集合，称为支撑有界可构集，它是普通模簇上可构集在导出范畴上的类比并且是导出不变的。

Secondly, by using the connection, we prove that the minimal continuous semi-flow is the minimal continuous flow if its time-one map is open, and for any minimal continuous semi-flow, there is an invariant residual set such that the restriction to the set is a minimal continuous flow.

为此，我们首先建立了它与其时间1映射极小集的联系；然后，利用这种联系证明了：若时间1映射为开映射，则它是极小的连续流，并且一般地说来，对任意极小连续半流，存在不变的剩余集，使得它在这不变集上的限制是极小的连续流。

Conley index; prime isolated invariant set; bifurcation point; discontinuity dynamical systems; finite piecewise continuous map; coding; rigorous computer assisted proof; chaos; Ikeda map

基础科学，数学，动力系统理论Conley指标；素孤立不变集；分支点；间断动力系统；有限分片连续映射；编码；计算机严格辅助证明；混沌； Ikeda映射

It is proved that any continuous time-invariant operator with fading memory can be approximated by a Volterra series.

任何具有衰减记忆的连续时不变非线性算子，都可以由Volterra级数任意逼近。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。