Identification of secondary and tertiary motifs in DNA sequences through naive Bayesian text classification
by Villalobos, Rodney V., Ph.D., WALDEN UNIVERSITY, 2007, 92 pages; 3247593

Abstract:

Faced with uncertain data and an unpredictable return on computational tool investment, researchers are opting for laboratory studies over in silico (computer based) studies. This study addressed the lack of efficiency in identifying motifs (biologically significant amino sequences) in deoxyribonucleic acid (DNA) sequences via naïve Bayesian text classification. DNA is a nucleic acid that carries genetic information in cells. A naïve Bayesian text classifier is a machine-learning tool that uses automated means of determining metadata and has been used to identify e-mail worms, viruses, and spam. This quantitative study utilized a naïve Bayesian text classification algorithm as the primary data collection technique. The data were analyzed using the independent t test and the chi-square goodness of fit test to address the research questions. Based on the tests conducted, naïve Bayesian text classification is not effective in identifying and classifying motifs. The results do suggest that secondary and tertiary motifs can be found in DNA sequences using machine learning. Given these 2 conclusions, the study adds to the area of research by furthering ways to help researchers handle large amounts of data that may point to more effective drugs, faster development of these drugs to the marketplace, and improvement to the care and cure of diseases.

 
AdviserRuth Maurer
SchoolWALDEN UNIVERSITY
SourceDAI/B 67-12, p. , Apr 2007
Source TypeDissertation
SubjectsBioinformatics; Computer science
Publication Number3247593
Adobe PDF Access the complete dissertation:
 

» Find an electronic copy at your library.
  Use the link below to access a full citation record of this graduate work:
  http://gateway.proquest.com/openurl%3furl_ver=Z39.88-2004%26res_dat=xri:pqdiss%26rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation%26rft_dat=xri:pqdiss:3247593
  If your library subscribes to the ProQuest Dissertations & Theses (PQDT) database, you may be entitled to a free electronic version of this graduate work. If not, you will have the option to purchase one, and access a 24 page preview for free (if available).

About ProQuest Dissertations & Theses
With over 2.3 million records, the ProQuest Dissertations & Theses (PQDT) database is the most comprehensive collection of dissertations and theses in the world. It is the database of record for graduate research.

The database includes citations of graduate works ranging from the first U.S. dissertation, accepted in 1861, to those accepted as recently as last semester. Of the 2.3 million graduate works included in the database, ProQuest offers more than 1.9 million in full text formats. Of those, over 860,000 are available in PDF format. More than 60,000 dissertations and theses are added to the database each year.

If you have questions, please feel free to visit the ProQuest Web site - http://www.proquest.com - or call ProQuest Hotline Customer Support at 1-800-521-3042.