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- W2076888175 abstract "A novel variational method for construction of free energy profiles from molecular simulation data is presented. The variational free energy profile (VFEP) method uses the maximum likelihood principle applied to the global free energy profile based on the entire set of simulation data (e.g from multiple biased simulations) that spans the free energy surface. The new method addresses common obstacles in two major problems usually observed in traditional methods for estimating free energy surfaces: the need for overlap in the re-weighting procedure and the problem of data representation. Test cases demonstrate that VFEP outperforms other methods in terms of the amount and sparsity of the data needed to construct the overall free energy profiles. For typical chemical reactions, only ~5 windows and ~20-35 independent data points per window are sufficient to obtain an overall qualitatively correct free energy profile with sampling errors an order of magnitude smaller than the free energy barrier. The proposed approach thus provides a feasible mechanism to quickly construct the global free energy profile and identify free energy barriers and basins in free energy simulations via a robust, variational procedure that determines an analytic representation of the free energy profile without the requirement of numerically unstable histograms or binning procedures. It can serve as a new framework for biased simulations and is suitable to be used together with other methods to tackle with the free energy estimation problem." @default.
- W2076888175 created "2016-06-24" @default.
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- W2076888175 creator A5029666960 @default.
- W2076888175 creator A5076436548 @default.
- W2076888175 creator A5089169254 @default.
- W2076888175 date "2012-12-26" @default.
- W2076888175 modified "2023-10-17" @default.
- W2076888175 title "A New Maximum Likelihood Approach for Free Energy Profile Construction from Molecular Simulations" @default.
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- W2076888175 doi "https://doi.org/10.1021/ct300703z" @default.
- W2076888175 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3580863" @default.
- W2076888175 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/23457427" @default.
- W2076888175 hasPublicationYear "2012" @default.
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