Trust models provide a framework to create and manage trust relationships among the different entities of a Public Key Infrastructure (PKI). These trust relationships are verified through the certification path validation process, which involves: path discovery, signature verification and revocation status checking. When trust relationships are bidirectional, multiple paths can exist between tw...

Establishing trust on certificates across multiple domains requires an efficient certification path discovery algorithm. Previously, small exmaples are used to analyze the performance of certification path discovery. In this work, we propose and implement a simulation framework and a probability search tree model for systematic performance evaluation. Built from measurement data collected from ...

In order to solve the problem of path planning for spacecraft cluster reach dynamic target point under premise considering obstacle avoidance. view fixed search radius, it will be difficult find a better value when is close point. This paper converts orbital dynamics each member into an optimization constraints, and proposes improved CPSO algorithm based on coordination. The method traditional ...

The traditional A* algorithm has several problems in practical applications, such as many path turning points, redundant nodes, and long running time. it is sometimes impossible to plan the theoretical optimal route. To solve above problem, this paper presents an optimized algorithm, adaptive adjustment step three-time Bezier curve are used of large angles, time search path. Moreover, aiming at...

Pathfinding is a core component of many games especially real-time strategy games. The paper proposed a smooth path generation strategy based on the A * algorithm. Firstly, adopted an admissible heuristics function, and a key-point optimization is applied to make the path to be connected by a series of key points. Secondly, the paper applied Catmull-Rom splines to the key points interpolation, ...

For path planning of the mobile robot in dynamic environment, this paper proposed an approach to safe path planning based on compact maps. This algorithm utilizes an efficient stream decimation algorithm of massive mesh to build compact maps of the environment models. And it uses a knowledge based genetic algorithm to find the global optimal safe path. The fitness of the algorithm is linear wit...

Status of this Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Abstract This document specifies the requirements for Delegated Path Validation (DPV) and Delegated Path Discovery (DPD) for Public Key Certificates. It also specifies the requirements for DPV and DPD policy management.

A novel approach is presented to select multiple key frames within an isolated video shot where there is camera motion causing significant scene change. This is achieved by determining the dominant motion between frame pairs whose similarities are represented using a directed weighted graph. The shortest path in the graph, found using the search algorithm, designates the key frames. The overall...