2010 IEEE Symposium on Computational Intelligence in Bioinformatics and Computational Biology最新文献

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Classifying Cytochrome c Oxidase subunit 1 by translation initiation mechanism using side effect machines 利用副作用机对细胞色素c氧化酶亚基1的翻译起始机制进行分类
J. Schonfeld, D. Ashlock
{"title":"Classifying Cytochrome c Oxidase subunit 1 by translation initiation mechanism using side effect machines","authors":"J. Schonfeld, D. Ashlock","doi":"10.1109/CIBCB.2010.5510703","DOIUrl":"https://doi.org/10.1109/CIBCB.2010.5510703","url":null,"abstract":"Cytochrome c oxidase subunit 1 (cox1) is unusual among mitochondrial genes in that instead of using AUG or one of the recognized alternative start codons it often appears to use an unknown means for initiating translation. However, the frequency of this unusual behavior as well as the underlying molecular mechanism are unknown. In this paper we use side effect machines to probe for signal in the sequence. Evolved side effect machines were able to correctly classify cox1 genes with ambiguous start codons 80.1% of the time. Side effect machines are finite state machines that have side effects associated with their states. In this study a simple side effect, a counter for the number of times the state was entered, is used. The problem is found to be challenging, a substantial majority of replicates found no signal, but some classifiers with statistically significant classification ability were located.","PeriodicalId":340637,"journal":{"name":"2010 IEEE Symposium on Computational Intelligence in Bioinformatics and Computational Biology","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117230663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
A comparative study of the time-series data for inference of gene regulatory networks using B-Spline 用b样条推断基因调控网络的时间序列数据比较研究
Haixin Wang, James E. Glover, Lijun Qian
{"title":"A comparative study of the time-series data for inference of gene regulatory networks using B-Spline","authors":"Haixin Wang, James E. Glover, Lijun Qian","doi":"10.1109/CIBCB.2010.5510596","DOIUrl":"https://doi.org/10.1109/CIBCB.2010.5510596","url":null,"abstract":"In this paper, the quantitative analysis of time-series gene expression data on inference of gene regulatory networks is performed. Time-series gene data are modeled by the B-Spline algorithm to improve the overall smooth expression curves which can further reduce over-fitting. The effect of the different sizes of observed time-series data on gene regulatory networks inference is analyzed. The stochastic errors introduced by the B-Spline algorithm to the system are evaluated. The precision of different sizes of time-series data on parameter estimations is compared. With application of the B-Spline to generate continuous curves, simulation results can be much more accurate and inference results are significantly improved. Both synthetic data and experimental data from microarray measurements are used to demonstrate the effectiveness of the proposed method.","PeriodicalId":340637,"journal":{"name":"2010 IEEE Symposium on Computational Intelligence in Bioinformatics and Computational Biology","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117034059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
DGA: Decomposition with genetic algorithm for multiple sequence alignment 基于遗传算法的多序列比对分解
F. Naznin, R. Sarker, D. Essam
{"title":"DGA: Decomposition with genetic algorithm for multiple sequence alignment","authors":"F. Naznin, R. Sarker, D. Essam","doi":"10.1109/CIBCB.2010.5510595","DOIUrl":"https://doi.org/10.1109/CIBCB.2010.5510595","url":null,"abstract":"Multiple sequence alignment is one of the most important issues in molecular biology as it plays an important role such as in life saving drug design. In this paper, we divide given sequences into two or more subsequences and then combine them together in order to find better multiple sequence alignments by applying a new GA based approach to the combined sequences. We also introduce new ways of generating an initial population and of applying the genetic operators. We have carried out experiments for the BAliBASE benchmark database using the sum of pair objective function with the PAM250 score matrix. To evaluate our proposed approach, we have compared with well known methods such as T-Coffee, MUSCLE, MAFFT and ProbCons. The experimental results show that better multiple sequence alignments may be obtained with higher number of divisions, however the computation time increases with the number of decompositions. The overall performance of the proposed Decomposition with GA (DGA) method is better than the existing methods and the GA method (without decompositions).","PeriodicalId":340637,"journal":{"name":"2010 IEEE Symposium on Computational Intelligence in Bioinformatics and Computational Biology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128526920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Towards a temporal modeling of the genetic network controlling Systemic Acquired Resistance in Arabidopsis thaliana 拟南芥系统获得性抗性遗传网络的时间模型研究
A. Tchagang, Heather L. Shearer, Sieu Phan, Hugo Bérubé, Fazel Famili, P. Fobert, Youlian Pan
{"title":"Towards a temporal modeling of the genetic network controlling Systemic Acquired Resistance in Arabidopsis thaliana","authors":"A. Tchagang, Heather L. Shearer, Sieu Phan, Hugo Bérubé, Fazel Famili, P. Fobert, Youlian Pan","doi":"10.1109/CIBCB.2010.5510589","DOIUrl":"https://doi.org/10.1109/CIBCB.2010.5510589","url":null,"abstract":"We studied defense mechanism of the Arabidopsis thaliana subjected to Salicylic Acid (SA) treatment for 0, 1, and 8 hours using a broader application of the frequent itemset approach. Four genotypes of the plant were used in this study, Columbia wild type, mutant npr1-3, double mutant tga1 tga4 and triple mutant tga2 tga5 tga6. We defined the major patterns of transcription regulation governing pathogen defense mechanism, thereby creating a model of the Systemic Acquired Resistance (SAR) at three time points. The temporal model describes the relationships among the regulators and defines groups of genes that are subject to similar regulation. The results obtained offered a first glimpse into the temporal pattern of the transcription regulatory network during SAR in Arabidopsis thaliana. We found that most of the genes that responded to SA challenge are in fact dependent on one or more of the NPR1 and TGA factors tested in this study.","PeriodicalId":340637,"journal":{"name":"2010 IEEE Symposium on Computational Intelligence in Bioinformatics and Computational Biology","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129421803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Using decision trees to study the convergence of phylogenetic analyses 用决策树研究系统发育分析的收敛性
Grant R. Brammer, T. Williams
{"title":"Using decision trees to study the convergence of phylogenetic analyses","authors":"Grant R. Brammer, T. Williams","doi":"10.1109/CIBCB.2010.5510326","DOIUrl":"https://doi.org/10.1109/CIBCB.2010.5510326","url":null,"abstract":"In this paper, we explore the novel use of decision trees to study the convergence properties of phylogenetic analyses. A decision learning tree is constructed from the evolutionary relationships (or bipartitions) found in the evolutionary trees returned from a phylogenetic analysis. We treat evolutionary trees returned from multiple runs of a phylogenetic analysis as different classes. Then, we use the depth of a decision tree as a technique to measure how distinct the runs are from each other. Decision trees with shallow depth reflect non-convergence since the evolutionary trees can be classified with little information. Deep decision tree depths reflect convergence. We study Bayesian and maximum parsimony phylogenetic analyses consisting of thousands of trees. For some datasets studied here, a single distinguishing bipartition can classify the entire tree collection suggesting non-convergence of the underlying phylogenetic analysis. Thus, we believe that decision trees lead to new insights with the potential for helping biologists reconstruct more robust evolutionary trees.","PeriodicalId":340637,"journal":{"name":"2010 IEEE Symposium on Computational Intelligence in Bioinformatics and Computational Biology","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126692368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Paroxysmal Atrial Fibrillation diagnosis based on feature extraction and classification 基于特征提取与分类的阵发性心房颤动诊断
B. Pourbabaee, C. Lucas
{"title":"Paroxysmal Atrial Fibrillation diagnosis based on feature extraction and classification","authors":"B. Pourbabaee, C. Lucas","doi":"10.1109/CIBCB.2010.5510702","DOIUrl":"https://doi.org/10.1109/CIBCB.2010.5510702","url":null,"abstract":"Paroxysmal Atrial Fibrillation (PAF), a really life threatening disease, is the result of irregular and repeated depolarization of the atria. In this paper, patients with PAF disease and their different episodes can be detected by extracting statistical and morphological features from ECG signals and classifying them by applying artificial neural network (ANN), Bayes optimal classifier and K-nearest neighbor (k-NN) classifier. Consequently, we become successful to diagnose about 93% of PAF patients among healthy cases and also detect their ECG signal different episodes such as those far from the PAF episode and the ones which are immediately before PAF episode with the correct classification rates (CCR) of more than 90%.","PeriodicalId":340637,"journal":{"name":"2010 IEEE Symposium on Computational Intelligence in Bioinformatics and Computational Biology","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124512601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Identification of a gene expression core signature for Duchenne muscular dystrophy (DMD) via integrative analysis reveals novel potential compounds for treatment 通过综合分析鉴定杜氏肌营养不良症(DMD)的基因表达核心特征,揭示了新的潜在治疗化合物
Noru Ichim-Moreno, M. Aranda, C. Voolstra
{"title":"Identification of a gene expression core signature for Duchenne muscular dystrophy (DMD) via integrative analysis reveals novel potential compounds for treatment","authors":"Noru Ichim-Moreno, M. Aranda, C. Voolstra","doi":"10.1109/CIBCB.2010.5510485","DOIUrl":"https://doi.org/10.1109/CIBCB.2010.5510485","url":null,"abstract":"Duchenne muscular dystrophy (DMD) is a recessive X-linked form of muscular dystrophy and one of the most prevalent genetic disorders of childhood. DMD is characterized by rapid progression of muscle degeneration, and ultimately death. Currently, glucocorticoids are the only available treatment for DMD, but they have been shown to result in serious side effects. The purpose of this research was to define a core signature of gene expression related to DMD via integrative analysis of mouse and human datasets. This core signature was subsequently used to screen for novel potential compounds that antagonistically affect the expression of signature genes. With this approach we were able to identify compounds that are 1) already used to treat DMD, 2) currently under investigation for treatment, and 3) so far unknown but promising candidates. Our study highlights the potential of meta-analyses through the combination of datasets to unravel previously unrecognized associations and reveal new relationships.","PeriodicalId":340637,"journal":{"name":"2010 IEEE Symposium on Computational Intelligence in Bioinformatics and Computational Biology","volume":"577 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115824424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Integrating multiple scoring functions to improve protein loop structure conformation space sampling 集成多重评分函数,提高蛋白质环结构构象空间采样
Yaohang Li, I. Rata, E. Jakobsson
{"title":"Integrating multiple scoring functions to improve protein loop structure conformation space sampling","authors":"Yaohang Li, I. Rata, E. Jakobsson","doi":"10.1109/CIBCB.2010.5510687","DOIUrl":"https://doi.org/10.1109/CIBCB.2010.5510687","url":null,"abstract":"In this article, we present a new protein structure modeling approach based on multi-scoring functions sampling. The rationale is to integrate multiple carefully-selected physics-or knowledge-based scoring functions to tolerate insensitivity and inaccuracy existing in an individual scoring function so as to improve protein structure modeling accuracy. We apply the multi-scoring function sampling approach to protein loop backbone structure modeling. Our computational results show that sampling the scoring function space of a physics-based soft-sphere potential function and a knowledge-based scoring function based on pairwise atoms distance has led to resolution improvement in the predicted decoy populations in a set of 12-residue benchmark loop targets.","PeriodicalId":340637,"journal":{"name":"2010 IEEE Symposium on Computational Intelligence in Bioinformatics and Computational Biology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129936165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Neural grammar networks for toxicology 毒理学的神经语法网络
Christopher J. F. Cameron, Eddie Y. T. Ma, Timothy C. Kremer
{"title":"Neural grammar networks for toxicology","authors":"Christopher J. F. Cameron, Eddie Y. T. Ma, Timothy C. Kremer","doi":"10.1109/CIBCB.2010.5510322","DOIUrl":"https://doi.org/10.1109/CIBCB.2010.5510322","url":null,"abstract":"In this paper we compare two methods for toxicity prediction: a novel method called a neural grammar network (NGN) and a more conventional Quantitative Structure Activity Relation (QSAR) approach based on a feed forward artificial neural network (ANN). Focusing each round of training and prediction on target organisms and specific organ systems sufficiently narrows down the parameters for us to do useful toxicity prediction. We represent the molecules in the dataset two ways. Simplified Molecular Input Line Entry Specification (SMILES) are input to the NGN while Feature vectors (or chemical descriptors) are input to the ANN. We perform training and testing on a regression-type problem wherein we predict the Lethal Dose for 50% (LD50) of the population of a given organism for the molecules in each dataset. The results of the experiment indicates that the SMILES-NGN method outperformed the ANN method in QSAR. The SMILES-NGN estimates were closer to their targets for 87% of the trials on randomized training data (as described in Section II.B) and 62% on grouped data when compared to ANN. The results also showed less variance in 87% of cases for NGN-SMILES estimates compared to ANN. Using a toxicity prediction method such as the one presented here allows the prediction of toxicity without the need for costly lab experiment (and which are, by definition, lethal to the test subjects).","PeriodicalId":340637,"journal":{"name":"2010 IEEE Symposium on Computational Intelligence in Bioinformatics and Computational Biology","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116708041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
An exploration of individual RNA structural elements in RNA gene finding RNA基因发现中单个RNA结构元件的探索
N. Erho, K. Wiese
{"title":"An exploration of individual RNA structural elements in RNA gene finding","authors":"N. Erho, K. Wiese","doi":"10.1109/CIBCB.2010.5510328","DOIUrl":"https://doi.org/10.1109/CIBCB.2010.5510328","url":null,"abstract":"This paper explores the use of RNA structural elements for RNA gene finding. A classification experiment is performed in which several support vector machine models, based on the properties of individual RNA secondary structure elements, are trained and tested, revealing the structural elements which have properties useful for RNA gene finding. The study finds that the external loop and structure elements with classification accuracies of over 84% and the stemloop, hairpin, and tail elements with classification accuracies around 70% are the most likely structural elements to be successfully exploited by future RNA gene finders.","PeriodicalId":340637,"journal":{"name":"2010 IEEE Symposium on Computational Intelligence in Bioinformatics and Computational Biology","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114418308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
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