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Reinterpreting Maximum Entropy in Ecology: a null hypothesis constrained by ecological mechanism

机译:重新解释生态学中的最大熵:一个零假设受到约束   通过生态机制

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摘要

Simplified mechanistic models in ecology have been criticized for the factthat a good fit to data does not imply the mechanism is true: pattern does notequal process. In parallel, the maximum entropy principle (MaxEnt) has beenapplied in ecology to make predictions constrained by just a handful of statevariables, like total abundance or species richness. But an outstandingquestion remains: what principle tells us which state variables to constrain?Here we attempt to solve both problems simultaneously, by translating a givenset of mechanisms into the state variables to be used in MaxEnt, and then usingthis MaxEnt theory as a null model against which to compare mechanisticpredictions. In particular, we identify the sufficient statistics needed toparametrize a given mechanistic model from data and use them as MaxEntconstraints. Our approach isolates exactly what mechanism is telling us overand above the state variables alone.
机译:有人批评生态学中的简化机理模型,原因是对数据的良好拟合并不意味着该机理是正确的:模式确实表明了平等的过程。同时,最大熵原理(MaxEnt)已在生态学中应用,以使预测仅受少数状态变量(如总丰度或物种丰富度)的约束。但是还有一个悬而未决的问题:什么原理告诉我们要约束哪些状态变量?我们试图通过将给定的机制转换为要在MaxEnt中使用的状态变量,然后使用此MaxEnt理论作为针对该模型的空模型来同时解决这两个问题比较机械预测。特别是,我们确定了从数据中参数化给定机械模型所需的足够统计量,并将其用作MaxEntconstraints。我们的方法完全隔离了仅在状态变量之外告诉我们的机制。

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