Title page for ETD etd-08202012-162249


Type of Document Master's Thesis
Author Meng, Fan
Author's Email Address mengfan@vt.edu
URN etd-08202012-162249
Title Design and Implementation of Convex Analysis of Mixtures Software Suite
Degree Master of Science
Department Electrical and Computer Engineering
Advisory Committee
Advisor Name Title
Wang, Yue J. Committee Chair
Wang, Yue J. Committee Chair
Lu, Chang-Tien Committee Member
Lu, Chang-Tien Committee Member
Xuan, Jianhua Committee Member
Xuan, Jianhua Committee Member
Keywords
  • R script
  • R script
  • Graphic User Interface
  • Graphic User Interface
  • Convex Analysis of Mixtures
  • Convex Analysis of Mixtures
  • Compartment Modeling
  • Compartment Modeling
Date of Defense 2012-08-07
Availability restricted
Abstract
Various convex analysis of mixtures (CAM) based algorithms have been developed to address real world blind source separation (BSS) problems and proven to have good performances in previous papers. This thesis reported the implementation of a comprehensive software CAM-Java, which contains three different CAM based algorithms, CAM compartment modeling (CAM-CM), CAM non-negative independent component analysis (CAM-nICA), and CAM non-negative well-grounded component analysis (CAM-nWCA). The implementation works include: translation of MATLAB coded algorithms to open-sourced R alternatives. As well as building a user friendly graphic user interface (GUI) to integrate three algorithms together, which is accomplished by adopting Java Swing API.

In order to combine R and Java coded modules, an open-sourced project RCaller is used to handle the establishment of low level connection between R and Java environment. In addition, specific R scripts and Java classes are also implemented to accomplish the tasks of passing parameters and input data from Java to R, run R scripts in Java environment, read R results back to Java, display R generated figures, and so on. Furthermore, system stream redirection and multi-threads techniques are used to build a simple R messages displaying window in Java built GUI.

The final version of the software runs smoothly and stable, and the CAM-CM results on both simulated and real DCE-MRI data are quite close to the original MATLAB version algorithms. The whole GUI based open-sourced software is easy to use, and can be freely distributed among the communities. Technical details in both R and Java modules implementation are also discussed, which presents some good examples of how to develop software with both complicate and up to date algorithms, as well as decent and user friendly GUI in the scientific or engineering research fields.

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