PMID- 12964195 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20040316 LR - 20030909 IS - 0192-8651 (Print) IS - 0192-8651 (Linking) VI - 24 IP - 14 DP - 2003 Nov 15 TI - Development of a multipopulation parallel genetic algorithm for structure solution from powder diffraction data. PG - 1766-74 AB - Previously, the genetic algorithm (GA) approach for direct-space crystal structure solution from powder diffraction data has been applied successfully in the structure determination of a range of organic molecular materials. In this article, we present a further development of our approach, namely a multipopulation parallel GA (PGA), which is shown to give rise to increased speed, efficiency, and reliability of structure solution calculations, as well as providing new opportunities for further optimizing our GA methodology. The multipopulation PGA is based on the independent evolution of different subpopulations, with occasional interaction (e.g., transfer of structures) allowed to occur between the different subpopulations. Different strategies for carrying out this interpopulation communication are considered in this article, and comparisons are made to the conventional single-population GA. The increased power offered by the PGA approach creates the opportunity for structure determination of molecular crystals of increasing complexity. CI - Copyright 2003 Wiley Periodicals, Inc. FAU - Habershon, Scott AU - Habershon S AD - School of Chemical Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom. FAU - Harris, Kenneth D M AU - Harris KD FAU - Johnston, Roy L AU - Johnston RL LA - eng PT - Journal Article PL - United States TA - J Comput Chem JT - Journal of computational chemistry JID - 9878362 EDAT- 2003/09/10 05:00 MHDA- 2003/09/10 05:01 CRDT- 2003/09/10 05:00 PHST- 2003/09/10 05:00 [pubmed] PHST- 2003/09/10 05:01 [medline] PHST- 2003/09/10 05:00 [entrez] AID - 10.1002/jcc.10326 [doi] PST - ppublish SO - J Comput Chem. 2003 Nov 15;24(14):1766-74. doi: 10.1002/jcc.10326.