1. Discussion with Yan on 
   (1) how to model spatial correlation in SSTA for FPGA
       e.g., how to get the first-order canonical form,
             how to obtain the coefficient in the canonical form

   (2) how to speed-up SSTA computation considering spatial correlation
       e.g., how to improve accuracy without loosing correlation,
             how to speed-up by pruning

2. Discussion with Lerong on
   (1) how to improve the spatial correlation model for DAC submission
       e.g., how to consider systematic spatial variation

   (2) experiments to do to better present the exp data

3. Revision paper for ISPD final submission.

-Jinjun