SGER: Frame-based Ecosystem Modeling

9314432 Starfield这个研究项目将为模拟生态系统动力学发展一个范例。范式使用从人工智能借鉴的框架语法，分别对系统的不同状态进行建模。在每个框架内，简单的模型（数值或定性）模拟相应生态状态的关键过程。“恶魔”会观察状态定义背后的假设是否被违背了，如果违背了，就切换到不同框架下的不同模型。这种方法极大地促进了建立动态生态系统模型的过程。它使快速测试假设成为可能，并导致易于理解的模型，从而促进思想的交流。它也适用于包括正在进行的过程（如竞争和草食）和零星事件（如火灾）之间的相互作用的模型，其分辨率足够简单，可以理解，但足够复杂，可以提供信息性的意外结果。生态系统极其复杂，生态学家一直在寻求以现实的方式对这些系统进行建模的方法。该项目对使用新开发的计算机技术的建模方法做出了重大贡献，这是人工智能方法的跨学科应用。在现实的生态环境中，这种方法可能是理解重要问题的有力手段，例如种群和栖息地的保护或气候变化等长期动态模式。G(i M &amp； G() i M”&amp；​!!!F N N(时代新罗马符号&amp； Arial " h; e; e； e 9 I 1黛博拉·约翰逊黛博拉·约翰逊

9314432 Starfield This research project will develop a paradigm for simulating dynamics of ecological systems. the paradigm models the different states of the systems separately, using the syntax of frames as borrowed from Artificial Intelligence. Within each frame, simple models (either numerical or qualitative) simulate the key processes for the corresponding ecological state. "Demons" watch to see whether the assumptions underlying the definition of the state are transgressed, and if so, switch to a different model in a different frame. This approach greatly facilitates the process of building dynamic ecosystem models. It makes it possible to rapidly test hypotheses, and leads to models that are easy to understand and therefore facilitates the communication of ideas. It also lends itself to models which include interactions between ongoing process (such as competition and herbivory and sporadic events (such as fires) at a level of resolution that is simple enough to comprehend but sufficiently complex to give informative unanticipated results. %%% Ecological systems are exceedingly complex and ecologist have been pursuing ways to model these systems in realistic ways. This project is a substantial contribution to the modeling approach using newly developed computer technology that is an interdisciplinary application of methods in Artificial Intelligence. This approach could be a powerful means of understanding important issues, such as conservation of populations and habitats or long-term dynamic patterns such as climate change, in realistic ecological contexts. & ( u & G(` i M & G( ) i M " & ! ! ! F N N ( Times New Roman Symbol & Arial " h ; e ; e ; e 9 I 1 Deborah Johnson Deborah Johnson