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Prediction of cohesion energy of polymers using topological indices

机译:使用拓扑指数预测聚合物的内聚能

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The quantitative structure-property relationship(QSPR)study of the cohesion energy(Ecoh)values for a training set of 60 polymers was carried out using only topological indices as input parameters.A general four-parameter correlation was obtained to predict E_(coh)values by stepwise multilinear regression analysis(MLRA),with squared correlation coefficient(R~2)equal to 0.9775 and standard error of estimation(s)2455 J/mol.The mean relative error(MRE)of E_(coh)prediction was 5.82 %.The stability of the proposed model was validated using Leave-One-Out cross-validation,randomization experiments and external test set.The model requires only topological indices for the predictions and its advantage is relative ease in calculation of descriptors which makes it easy to apply.
机译:仅使用拓扑指数作为输入参数,对60个聚合物的训练集进行了内聚能(Ecoh)值的定量结构-性质关系(QSPR)研究,获得了一个通用的四参数相关性来预测E_(coh)通过逐步多线性回归分析(MLRA)确定相关值,平方相关系数(R〜2)等于0.9775,估计标准误差为2455 J / mol.E_(coh)预测的平均相对误差(MRE)为5.82使用留一法交叉验证,随机化实验和外部测试集验证了所提出模型的稳定性。该模型仅需要拓扑索引进行预测,其优点是描述符的计算相对容易,因此很容易申请。

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