I. Introduction  
A. Utility-Based Data Mining  
B. Privacy Preserving Utility Mining  

III. Preliminaries and Problem Formulation  
A. Preliminaries of Utility Mining  
B. Privacy-Preserving Utility Mining  
C. Difference between PPUM and Utility Mining  
D. The Hiding Strategies  
E. Evaluation Criteria for PPUM  

V. Open Challenges and Opportunities  

VI. Conclusion