In this paper, we present a new line search and trust region algorithm for unconstrained optimization problems. The trust region center locates at somewhere in the negative gradient direction with the current best ite...In this paper, we present a new line search and trust region algorithm for unconstrained optimization problems. The trust region center locates at somewhere in the negative gradient direction with the current best iterative point being on the boundary. By doing these, the trust region subproblems are constructed at a new way different with the traditional ones. Then, we test the efficiency of the new line search and trust region algorithm on some standard benchmarking. The computational results reveal that, for most test problems, the number of function and gradient calculations are reduced significantly.展开更多
In this paper, we propose and analyze a non-monotone trust region method with non-monotone line search strategy for unconstrained optimization problems. Unlike the traditional non-monotone trust region method, our alg...In this paper, we propose and analyze a non-monotone trust region method with non-monotone line search strategy for unconstrained optimization problems. Unlike the traditional non-monotone trust region method, our algorithm utilizes non-monotone Wolfe line search to get the next point if a trial step is not adopted. Thus, it can reduce the number of solving sub-problems. Theoretical analysis shows that the new proposed method has a global convergence under some mild conditions.展开更多
随着内地和台湾地区交流的日益密切和频繁,加强两岸术语研究工作的交流与互鉴变得尤为重要。文章对台湾地区术语建设的管理结构、历时发展、已有成果,两岸共同编纂术语工具书的合作成果,“乐词网”术语搜索及资源在线平台,两岸共同建设...随着内地和台湾地区交流的日益密切和频繁,加强两岸术语研究工作的交流与互鉴变得尤为重要。文章对台湾地区术语建设的管理结构、历时发展、已有成果,两岸共同编纂术语工具书的合作成果,“乐词网”术语搜索及资源在线平台,两岸共同建设的“中华语文知识库”及其他语料库进行了详细介绍和全面梳理。对台湾地区在Web of Science(WOS)核心合集数据库中与术语相关的研究进行了主题抽样分析,借助文献计量学工具VOSviewer进行了可视化呈现。揭示了台湾地区学者在国际核心期刊上发表的术语相关研究的发展趋势和热点议题。以期为众多两岸术语研究者、语言爱好者提供研究与学习的素材和途径,助力两岸学者的沟通与合作,并确定未来协作努力的方向,也为两岸的术语建设、制定科技发展战略提供有益的参考和支撑。展开更多
文摘In this paper, we present a new line search and trust region algorithm for unconstrained optimization problems. The trust region center locates at somewhere in the negative gradient direction with the current best iterative point being on the boundary. By doing these, the trust region subproblems are constructed at a new way different with the traditional ones. Then, we test the efficiency of the new line search and trust region algorithm on some standard benchmarking. The computational results reveal that, for most test problems, the number of function and gradient calculations are reduced significantly.
文摘In this paper, we propose and analyze a non-monotone trust region method with non-monotone line search strategy for unconstrained optimization problems. Unlike the traditional non-monotone trust region method, our algorithm utilizes non-monotone Wolfe line search to get the next point if a trial step is not adopted. Thus, it can reduce the number of solving sub-problems. Theoretical analysis shows that the new proposed method has a global convergence under some mild conditions.
文摘随着内地和台湾地区交流的日益密切和频繁,加强两岸术语研究工作的交流与互鉴变得尤为重要。文章对台湾地区术语建设的管理结构、历时发展、已有成果,两岸共同编纂术语工具书的合作成果,“乐词网”术语搜索及资源在线平台,两岸共同建设的“中华语文知识库”及其他语料库进行了详细介绍和全面梳理。对台湾地区在Web of Science(WOS)核心合集数据库中与术语相关的研究进行了主题抽样分析,借助文献计量学工具VOSviewer进行了可视化呈现。揭示了台湾地区学者在国际核心期刊上发表的术语相关研究的发展趋势和热点议题。以期为众多两岸术语研究者、语言爱好者提供研究与学习的素材和途径,助力两岸学者的沟通与合作,并确定未来协作努力的方向,也为两岸的术语建设、制定科技发展战略提供有益的参考和支撑。
