Data mining a prostate cancer dataset using rough sets

• Author(s): Revett, Kenneth ; Magalhães, Paulo Sérgio ; Santos, Henrique Dinis dos
• Date: 2006
• Persistent ID: http://hdl.handle.net/1822/6401
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): Rough sets; Cancer classifier; Machine learning; Prostate cancer dataset; Reducts
• Document Type: Conference Object
• Language: English

Description

Prostate cancer remains one of the leading causes of cancer death worldwide, with a reported incidence rate of 650,000 cases per annum worldwide. The causal factors of prostate cancer still remain to be determined. In this paper, we investigate a medical dataset containing clinical information on 502 prostate cancer patients using the machine learning technique of rough sets. Our preliminary results yield a classification accuracy of 90%, with high sensitivity and specificity (both at approximately 91%). Our results yield a predictive positive value (PPN) of 81% and a predictive negative value (PNV) of 95%. In addition to the high classification accuracy of our system, the rough set approach also provides a rule-based inference mechanism for information extraction that is suitable for integration into a rule-based system. The generated rules relate directly to the attributes and their values and provide a direct mapping between them.