Titlebook: Web Information Systems and Applications; 19th International C Xiang Zhao,Shiyu Yang,Jianxin Li Conference proceedings 2022 The Editor(s) (

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Zhiyuan Ma,Dan Meng,Chao Kong,Liang Zhou,Mengfei Li,Wan Taon this book, the focus is on a problem arising particularly in real number computations: the problem of veri?edor reliablecomputations. Since real numbersare objects c- taining an in?nite amount of information, they cannot be represented precisely on a computer. This leads to the well-known problems

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Yi Zhang,Zhi Deng,Dan Meng,Liang Zhou,Mengfei Li,Qijie Liu,Chao Kongnt of reliability cost and reliability worth [2]. The ability to assess the costs associated with providing reliable service is reasonably well established and accepted [3, 4]. In contrast, the ability to assess the worth of providing reliable service is not well established and considerable work wi