A Privacy-Preserving Incentive Mechanism for Participatory Sensing Systems

Algorithm 1

User selection.

INPUT: set of user willingness , , ,

PARAMETERS: flag

OUTPUT: set of feedback information ,

 sort the of in ascending order

 initialization: for to ,

 while   &&   ;

   ; for to do

   if   &&  

    if

      , , , −1;

    end;

   else break;

  end;

 end;

 return ;