Improved Transferability of Data‐Driven Damage Models Through Sample Selection Bias Correction

Damage models for natural hazards are used for decision making on reducing and transferring risk. The damage estimates from these models depend on many variables and their complex sometimes nonlinear relationships with the damage. In recent years, data‐driven modeling techniques have been used to capture those relationships. The available data to build such models are often limited. Therefore, in practice it is usually necessary to transfer models to a different context. In this article, we show that this implies the samples used to build the model are often not fully representative for the situation where they need to be applied on, which leads to a “sample selection bias.” In this article, we enhance data‐driven damage models by applying methods, not previously applied to damage modeling, to correct for this bias before the machine learning (ML) models are trained. We demonstrate this with case studies on flooding in Europe, and typhoon wind damage in the Philippines. Two sample selection bias correction methods from the ML literature are applied and one of these methods is also adjusted to our problem. These three methods are combined with stochastic generation of synthetic damage data. We demonstrate that for both case studies, the sample selection bias correction techniques reduce model errors, especially for the mean bias error this reduction can be larger than 30%. The novel combination with stochastic data generation seems to enhance these techniques. This shows that sample selection bias correction methods are beneficial for damage model transfer.     

我国《合同法》应将损害赔偿规定为违约救济的首要方式

对于违约案件 ,法院在选择对受害人的救济方式时 ,应首先考虑损害赔偿 ,还是实际履行 ?西方国家多优先适用损害赔偿 ,因为市场主体的交易目的是赢利 ,而损害赔偿能以最快速度填补受害方的利益 ,且无需违约方配合 ,便于法院执行。但我国现行《合同法》却置实际履行于首位 ,损害赔偿于末位 ,这不符合事理、法理和国际惯例 ,应予修正。     

新形势下农资价格大幅上涨对“三农”的影响分析

文章首先以湖北省襄樊市的调研数据为依据对此次农资价格整体变动情况作了说明，紧接着对本轮农资价格大幅上涨的深层次原因、趋势及其对“三农”的影响作了深入剖析。结果表明，农资生产原料价格的迅猛上涨是此次农资价格上涨的导火索与根本推动力量，农资上涨基本上冲销了中央一系列惠农政策带给农民的实惠，使农民的种粮积极性遭受很大挫伤。最后从放开价格、加强宏观调控、改变补贴方式、健全营销网络、完善储备制度、加强市场监管及监测等方面提出政策建议。     

唐代洛阳的水害

洛阳有伊、洛、、涧、谷等数条河流。唐代东都洛阳水灾频繁发生 ,共 35次之多 ,平均不足 1 0年一次 ,给洛阳城及沿岸造成严重破坏和损失。洛阳水灾发生多为五至八月份。唐代洛阳河流具有明显的季节性 ,雨季流量大 ,便于行舟 ,旱季水少河浅难以行船。针对频发的水灾 ,唐政府采取了一系列救助灾民的措施 ,同时还采取了加固堤坝、疏浚河道等防治措施     

论环境侵权中风险责任的确立

基于环境侵害具有潜伏性和不可逆转性的特点,以损害实际发生为归责前提的过错责任和无过错责任原则在环境侵权中的适用无法体现环境保护“预防为主”的思想。风险责任进入环境侵权归责体系则可以较好地解决这一问题,但风险责任的适用必须解决权利主体和义务主体的特定化问题、损害预防和经济发展的矛盾问题以及风险责任本身在侵权行为法中的立法体例问题。     

从人域契约到自然契约：生态损害赔偿法理要义之证成与功能拓展

生态损害赔偿作为我国环境保护领域最重要的救济性制度之一,其规范的目的、动机、价值、架构等诸构件决定着生境主体及其权利何以成立的基础性承载和充足性解释。生态损害赔偿制度从人域契约的“人域法”层面确立了“生境”的独特价值、独立的存在权和独立的法律人格;从自然契约的“人际法”层面打破了“人域法”理论的封闭体系,将伦理价值植入环境法律规则之中,摆脱了传统“人域法”对非政治化和非伦理化的唯理主义形式的追求和表达,复兴了中华法系“法律应当伦理化而非工具化”的灵魂与传统,确立了法益保护从“人域优先”向“人际优先”法律价值的转换,丰富了环境法理学的秩序观念和学理原则,拓展了传统人域法“主体中心主义”规则体系的界限与边界,为开启我国环境法从“主体模式保护”向“关系模式保护”生态法律观的变革与价值功能的转换提供了超越性的实践尝试与理论探索。     

Inverse gaussian accelerated test models based on cumulative damage

The failure of a system under environmental stress often can be described by an accelerated test model which incorporates the environmental variable L. Here, the failure of such a system at environmental level L is modeled as the first passage of accumulated damage to a critical threshold value. Assuming a discrete additive damage model leads to a Birnbaum–Saunders-type distribution for the failure time which can be closely approximated by an inverse Gaussian-type model. However, if a continuous damage model based on a Gaussian process is assumed, a more general family of inverse Gaussian accelerated test models is obtained. Three sets of failure data are discussed to illustrate the usefulness of this general family.     

论数+形+量结构中量词的特点

现代汉语中数量词中插入形容词的结构即数+形+量结构比较常见,例如,一大张纸,一大群人,一长根铁丝。陆俭明先 生对这种语言现象进行了详细的描写,但是还是留下了一些问题给大家讨论。例如,为什么数量词中间可以插入形容词,插入 形容词对整个结构有什么影响。从量词的特点和形容词的语义指向来看,数+形+量结构中的量词具有空间性、物质性、描写 性的特点,使得形容词能够进入该结构,形容词的语义指向不同,使整个结构有不同的表达功能。     

侵权法中的机会丧失理论

机会丧失理论即加害人的加害行为导致受害人获得利益或避免损害的机会丧失时,加害人应对此种机会的丧失承担损害赔偿责任的学说。它是对传统侵权法理论的修正和补充,并对损害、因果关系等侵权构成要件的传统学说造成了一定冲击。该理论在英美法系国家以及德国、法国等国的司法实践中多有运用,但关于其适用及其适用范围尚存诸多争议。我国机会丧失案件并不少见,但却没有采纳机会丧失理论。本文在介绍机会丧失理论的内涵及各国发展状况的基础上,着重探讨它在侵权法上适用的法律和政策方面的主要争议,并提出可供我国司法实践借鉴的建议。     

二战后中国及各受害国对日索赔失败的原因

二战结束后,根据盟国达成的协议和有关国际法规定,各受害国家向日本展开了索取战争赔偿工作。在整个索赔过程中,由于各个国家之间的争执,更为主要的是美国从自己的全球利益需要出发,改变了其对日索赔问题的态度,致使索赔工作失败。对日索赔工作的失败原因是复杂的,但毋庸置疑,美国态度的改变是最根本的,最主要的。