SeethaRam Janapala, Shiladitya Roy, Jackson John, Luca Columbu, Joseph Carrozza, Robert Zack, and Charles Tappert REFACTORING A KEYSTROKE BIOMETRIC SYSTEM.

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Presentation transcript:

SeethaRam Janapala, Shiladitya Roy, Jackson John, Luca Columbu, Joseph Carrozza, Robert Zack, and Charles Tappert REFACTORING A KEYSTROKE BIOMETRIC SYSTEM

Biometric Authentication System (BAS)

Bio Feature Extractor

Biometric Authentication System (BAS)

BAS Accuracy Calculator

Refactoring Objectives  Fix errors and warnings in the code.  Remove deprecated elements and replace with supported ones.  Conform to coding standards.  Rewrite memory management components to support large data sets.  Improve system performance.  Enable applications to run standalone without an IDE.

Completed Tasks  Modified code to efficiently use threads, collections, files, and buffering techniques to improve the system speed, manage the memory, and avoid OutOfMemory errors.  Now the system uses only 60MB-120MB memory and less CPU allowing the user to run the system in the background and continue his/her work.60MB-120MB memory and less CPU

Completed Tasks  Preserve dichotomy data so subsequent runs did not need to re-dichotomize.  Changed BAS defaults to support odd valued NN’s.  Removed all unnecessary buttons to save dichotomy data as we are already storing the data by default.

Completed Tasks  Parameterized the 'lowest N choices' for test results which can be used for larger nearest neighbor choice.  Converted Perl and Python scripts to Java.  Added error handling and improved logging.  Results saved in HTML format.