PSSP with dynamic weighted kernel fusion based on SVM-PHGS

作者: Mohammad Hossein Zangooei , Saeed Jalili

DOI: 10.1016/J.KNOSYS.2011.11.002

关键词:

摘要: Since 1960s, researchers have proposed several prediction methods, for protein secondary structure (PSSP), whereas the accuracy of them is no more than 80%. In this case, there an urgent need to introduce a high method. One learning method called support vector machines (SVMs) has shown comparable or better results neural networks on bioinformatics applications. This research proposes based SVM which been improved by new parallel multi class (PMC) method, hierarchical grid search (PHGS), cross validation (CV) technique and weighted kernel fusion (WKF) The presented PHGS applied regularize parameters SVM's function important impact accuracy. Using suitable input data particular problem can improve remarkably. Also our Position Scoring Matrix (PSSM) profiles are used as information it. goals study calibrate different functions' result in order determine classes accurately. right choice issue creating supreme performance so we propose dynamic weight allocation non-linear analysis system. obtained classification accuracies 84.65% 83.94% RS126 CB513 datasets respectively they very promising with regard other methods literature problem. evaluating behavior comparison state arts independent dataset used. show that comprehensibility WKF SVM-PHGS much methods.

参考文章(67)
Fred E. Cohen, Irwin D. Kuntz, Tertiary Structure Prediction Prediction of Protein Structure and the Principles of Protein Conformation. pp. 647- 705 ,(1989) , 10.1007/978-1-4613-1571-1_17
Jagath C. Rajapakse, Minh N. Nguyen, Multi-class support vector machines for protein secondary structure prediction. Genome Informatics. ,vol. 14, pp. 218- 227 ,(2003) , 10.11234/GI1990.14.218
Bogdan Gabrys, Dymitr Ruta, An Overview of Classifier Fusion Methods ,(2000)
Bernhard Schölkopf, Koji Tsuda, Jean-Philippe Vert, Kernel Methods in Computational Biology MIT Press. ,(2004)
Marianne J. Rooman, Jean-Pierre A. Kocher, Shoshana J. Wodak, Prediction of protein backbone conformation based on seven structure assignments: Influence of local interactions Journal of Molecular Biology. ,vol. 221, pp. 961- 979 ,(1991) , 10.1016/0022-2836(91)80186-X
Scott Montgomerie, Shan Sundararaj, Warren J Gallin, David S Wishart, Improving the accuracy of protein secondary structure prediction using structural alignment. BMC Bioinformatics. ,vol. 7, pp. 301- 301 ,(2006) , 10.1186/1471-2105-7-301
Zafer Aydin, Yucel Altunbasak, Mark Borodovsky, Protein secondary structure prediction for a single-sequence using hidden semi-Markov models BMC Bioinformatics. ,vol. 7, pp. 178- 178 ,(2006) , 10.1186/1471-2105-7-178