搜索结果: 31-45 共查到“知识库 离散数学”相关记录173条 . 查询时间(3.56 秒)
Reconstruction and Clustering in Random Constraint Satisfaction Problems
Random quantity structure solution space threshold
2015/8/20
Random instances of Constraint Satisfaction Problems (CSP’s) appear to be hard for all known algorithms, when the number of constraints per variable lies in a certain interval. Contributing to the gen...
The Capacity Region of a Class of Deterministic Interference Channels
Capacity Region Deterministic Interference Channels
2015/8/12
The Capacity Region of a Class of Deterministic Interference Channels.
The capacityregion is establishedfor those discrete memoryless broabst channel.9p(y,t~x) for wbicb Z(X; Y) >Z(X; Z) holds for au input distributions. ‘ l%e capacity region for this class of channels r...
The Feedback Capacity of Degraded Broadcast Channels
Feedback Capacity Degraded Broadcast Channels
2015/8/12
e fact that the capacity region of the discrete memoryless physically degraded broadcast channel is not increased by feedback is establisked.
Mixed state estimation for a linear Gaussian Markov model
Discrete dynamical system Boolean state of continuous linear transmission Boolean state variables noise markov chain
2015/8/10
We consider a discrete-time dynamical system with Boolean and continuous states, with the continuous state propagating linearly in the continuous and Boolean state variables, and an additive Gaussian ...
Mixed linear system estimation and identification
Statistical estimation Convex relaxation Interior-point methods
2015/8/7
We consider a mixed linear system model, with both continuous and discrete inputs and outputs, described by a coefficient matrix and a set of noise variances. When the discrete inputs and outputs are ...
FAST WAVE COMPUTATION VIA FOURIER INTEGRAL OPERATORS
Wave equations Fourier integral operators discrete symbol calculus random sampling separated approximation multiscale computations
2015/7/14
This paper presents a numerical method for “time upscaling” wave equations, i.e., performing time steps not limited by the Courant-FriedrichsLewy (CFL) condition. The proposed method leverages recent ...
An unstructured-grid, finite-volume, nonhydrostatic, parallel coastal ocean simulator
Nonhydrostatic Unstructured grid Parallel Internal gravity wave
2015/6/30
A finite-volume formulation is presented that solves the three-dimensional, nonhydrostatic Navier–Stokes equations with the Boussinesq approximation on an unstructured, staggered, z-level grid, with t...
Reconstruction of vector fields for semi-Lagrangian advection on unstructured, staggered grids
Interpolation Vector fields Unstructured Staggered grids Semi-Lagrangian advection
2015/6/30
Applying the semi-Lagrangian method to discretize the advection of momentum eliminates the Courant number constraint associated with explicit Eulerian momentum advection in coastal ocean models. Key s...
An Application of a Variable Window Discrete Scan Statistic in Molecular Biology
Amino acids Moving sums Product-type approximation Scan statistic
2015/3/18
In this article a variable window discrete scan statistic is introduced for a
conditional scan statistic. This statistic is used to test the null hypothesis that the
observations are randomly distri...
On the Discrete Differential Geometry of Surfaces in S4
integrable klein lie quaternion touch
2014/12/8
The Grassmannian space GC(2, 4) embedded in CP5 as the Klein quadric of twistor theory has a natural interpretation in terms of the geometry of “round” 2-spheres in S4. The incidence of two lines in C...
Cycle symmetries and circulation fluctuations for discrete-time and continuous-time Markov chains
Haldane equality current fluctuations fluctuation theorems
2014/12/5
In probability theory, equalities are much less than inequalities. In this paper, we find a series
of equalities which characterize the symmetry of the forming times of a family of similar cycles
fo...
On Hyperbolicity of 13-Moment System
Hyperbolicity of 13-Moment System hyperbolicity region
2014/9/26
We point out that the thermodynamic equilibrium is not an interior point of the
hyperbolicity region of Grad’s 13-moment system. With a compact expansion of the
phase density, which is compacter tha...
分布式离散多智能体系统在固定和切换拓扑下的编队控制
多智能体系统 采样 分布式编队控制 固定和切换拓扑
2014/2/25
研究多智能体系统在分布式采样控制下固定拓扑和时变通信拓扑时的追踪和编队问题. 首先分析目标系统 在没有输入时的稳定性; 然后分别给出在固定和时变通信拓扑下使各智能体完成追踪和编队的控制协议, 并给出了系统稳定时采样间隔需满足条件的充分性和必要性证明; 最后通过仿真研究验证了所提出算法的有效性.