Dissertation > Excellent graduate degree dissertation topics show

Text classification based on natural language processing, analysis and research

Author: ZhangChunYan
Tutor: LiuFaSheng
School: Jiangxi University of Technology
Course: Applied Computer Technology
Keywords: Nature Language Processing Text Classification Data Mining Feature Selection and Extraction
CLC: TP391.1
Type: Master's thesis
Year: 2011
Downloads: 118
Quote: 0
Read: Download Dissertation

Abstract


Nowadays, with the information technology development, machine learning and pattern recognition in computer science are more and more mature and widely applied to many areas, one of the important research direction is based on the statistics of natural language processing. Due to the rise of the Internet, the electronic text information based on natural language description is exploding, the information processing based on natural language is one of the biggest target how effective these information acquisition and management. These questions raised a lot of research and applications on natural language, of which text categorization as the basis for information retrieval problems, is especially paid attention.Text categorization mainly divided into two stages, using natural language processing, machine learning, pattern recognition, text mining technology to realize. Therefore, the value of text classification theory research reflected in these technologies. Text classification can effectively improve the effect of online information retrieval, not only to improve the information of acquisition modes, but also an important aspect of content security. Therefore classified the performance has become the focus of attention, the research of text classification task and engineering application, will be having the important meaning.In the existing research results, text categorization and related technologies have been done some research. The beginning of the thesis introduces the status of the text classification and the research significance; Then it introduces text classification process and the related technologies in the process, it also has researched the Chinese word segmentation method, feature selection method, text classification algorithm ; the thesis introduces the design of the text categorization, the process in order to eliminate ambiguity for three characters long ambiguous phrases of overlap type and process stop words, the best match points of lexical was improved, meanwhile based on KL dispersion degree feature selection method and combining the characteristics of TFIDF weights, such a feature selection can compare to accurately express the text, lay a good foundation for classification, Finally to the Bayes algorithm, simple vector distance classification and KNN (K nearest neighbors) algorithm, the thesis had found out the classification results compared with time complexity and selected a better practical algorithm.

Related Dissertations

  1. Research on Text Classification Based on Biomimetic Pattern Recongnition,TP391.1
  2. Tourism Comments on the Internet’s Semantic Analysis and Usefulness Research,TP391.1
  3. A Study on Healthcare Product Marketing Based on Data Mining Technology,F426.72
  4. Gao Zhong-ying academic thought and experience and use of Bufei Decoction treatment of common diseases of the respiratory system drug law,R249.2
  5. Bing- thick academic thought and clinical experience and empirical studies apply to turtle soups treatment of chronic kidney disease,R249.2
  6. The Design and Implementation of Bicluster Data Analyzing Software,TP311.52
  7. Research on Clustering Algorithm Based on Mutation Particle Swarm Optimization,TP18
  8. Research on Fuzzy C-Mean Clustering Algorithm Based on Particle Swarm Optimization and Shuffled Frog Leaping Algorithm,TP18
  9. Research on Clustering Algorithm Based on Genetic Algorithm and Rough Set Theory,TP18
  10. Based on data mining research tax audit case selection,F812.42
  11. Community-oriented education, personalized learning system and its implementation,TP391.6
  12. Association rule mining based Intrusion Detection System Research and Implementation,TP393.08
  13. Data warehouse technology in the banking customer management systems research and implementation,TP315
  14. Design to E-learning System in Senior Vocational School Base on Moodle,TP311.52
  15. Design and Development of Teaching Quality Assessment System Based on Data Mining,TP311.13
  16. Based on Data Distribution Characteristics of Text Classification,TP391.1
  17. The Application of Association Rules Algorithm in Higher Vocational Colleges’ Endorsement of Impoverished Students,G717
  18. Based on Data Mining Technologies in Urban Water Supply Analysis and Decision,F299.24;F224
  19. Research on Application of Data Mining Technology in Degree of Satisfaction Analysis of Television Customers,TP311.13
  20. Web Usage Mining and the Research of Personalized Recommendation,TP311.13
  21. Data Mining of Application in the School Management and Training Students,TP311.13

CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Text Processing
© 2012 www.DissertationTopic.Net  Mobile