graph model中文什么意思

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1. The second part is the foudamental part of the research . we give an account of qos metric , graph model and the existing problem , and the research of present on multicast routing algorithm
   第二部分是研究的基础部分，主要介绍了qos的描述参数、数学模型、存在问题以及组播路由算法研究现状。
2. By directed acyclic graph model , video server can select correct substreams by network bandwidth and terminal capability to get any frame rate , spatial resolution but coarse granular scalability presentation of video
   通过该模型,视频流媒体服务器能够根据网络带宽,终端能力,正确地选择子码流进行传输播放。
3. The definition and the factor graph model for ldpc codes are summarized . message passing decoding algorithm is presented in details on bsc channel , and the convergence conditions of the algorithm are analyzed
   阐述了ldpc码的定义及因子图模型，以bsc信道为例，具体介绍了消息传递译码算法，并给出了其译码收敛条件的分析。
4. Especially with the successful application of power bond graph modeling technique in the dynamic performance analysis of hydraulic system , the researches in this field have been advanced greatly
   特别是功率键合图建模技术在液压系统动态特性研究领域中的成功应用，为其提供了强有力的技术手段，大大推动了这方面研究工作的进展。
5. A file format is proposed based on the generic model and iso base media file format . we first create a directed acyclic graph model to describe the substreams and relationships among those substreams in a scalable video stream
   本文首先建立了一个有向无环图模型,该模型能够描述可扩展视频编码码流中各子码流和子码流间复杂的依赖关系。