Query optimization is the main problem of query processing research, thus in particular discusses cost estimated, query plan, search Spaces and so on related problems.
查询优化是查询处理研究的一个主要问题，为此着重分析研究了查询优化所涉及的代价估计、查询规划和搜索空间等相关问题。
This paper makes a brief summary of the main models and research framework of supply chain game theory and discusses the concerned problems deserving further studies.
文章对供应链博弈的主要模型及研究进展作了简要综述，并提出一些值得继续探讨的问题。
The main character of this paper is the combination between theory and practice to solve the practice problems by using transport theory, operation research.
本论文以理论联系实际为主要特点，运用运输理论、运筹学、计量经济学的原理和方法来解决实际问题。
应用推荐