... reduce hardware costs, yet maintain an application’s overall accuracy A maximum relative representation error (MRRE) [18] is used as one of the indices of floating-point arithmetic accuracy, as shown ... Oracle Research Laboratory, The Olivetti & Oracle Research Laboratory Face Database of Faces, http://www.cam-orl.co.uk/facedatabase.html [18] I Koren, Computer Arithmetic Algorithms, A K Peters, Natick, ... how neural network-based face detector can employ the minimal number of bits in an FPU to reduce hardware resources, yet maintain a face detector’s overall accuracy This paper is outlined as follows...