2012 IEEE International Conference on Bioinformatics and Biomedicine 2012
DOI: 10.1109/bibm.2012.6392629
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Aligning ligand binding cavities by optimizing superposed volume

Abstract: We describe an optimization-based method that seeks the superposition of ligand binding cavities that maximizes their overlapping volume. Our method, called DFO-VASP, iteratively uses Boolean set operations to evaluate overlapping volume in intermediate superpositions while searching for the maximal one. Our results verify that the superpositions identified are biologically relevant, and demonstrate that DFO-VASP generally discovers cavity superpositions with similar or occasionally larger overlapping volume t… Show more

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Cited by 4 publications
(4 citation statements)
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“…In these approaches, we use the measures of convergence (e.g., trust-region radius, model gradient) to determine a suitable level of accuracy with which to evaluate the objective; we start with low-accuracy requirements, and increase the required accuracy as we converge to a solution. In a DFO context, this framework is the basis of [19], and a similar approach was considered in [15] in the context of analyzing protein structures. This framework has also been recently extended in a derivative-based context to higherorder regularization methods [7,26].…”
Section: Derivative-free Optimizationmentioning
confidence: 99%
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“…In these approaches, we use the measures of convergence (e.g., trust-region radius, model gradient) to determine a suitable level of accuracy with which to evaluate the objective; we start with low-accuracy requirements, and increase the required accuracy as we converge to a solution. In a DFO context, this framework is the basis of [19], and a similar approach was considered in [15] in the context of analyzing protein structures. This framework has also been recently extended in a derivative-based context to higherorder regularization methods [7,26].…”
Section: Derivative-free Optimizationmentioning
confidence: 99%
“…We will need to be able to solve the lower-level problem to sufficient accuracy that we can guarantee x k −x * 2 ≤ , for a suitable accuracy > 0. We can guarantee this accuracy by ensuring we terminate with k sufficiently large, given an estimate x 0 − x * 2 , using the a priori bounds (15)…”
Section: Ensuring Accuracy Requirementsmentioning
confidence: 99%
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“…trust-region radius, model gradient) to determine a suitable level of accuracy with which to evaluate the objective; we start with low accuracy requirements, and increase the required accuracy as we converge to a solution. In a DFO context, this framework is the basis of [25], and a similar approach was considered in [27] in the context of analyzing protein structures. This framework has also been recently extended in a derivative-based context to higher-order regularization methods [28,29].…”
mentioning
confidence: 99%