LUYANG ZHANG
 Total activity 5
 Last activity
 Member since
 Following 0 users
 Followed by 0 users
 Votes 0
 Subscriptions 2
Activity overview
Latest activity by LUYANG ZHANG
LUYANG ZHANG created a post,
Question about converting a matrix to indicator matrix in gurobi
AnsweredHi, suppose I have a matrix/vector containing decision variable x, such as v = [x_1, 2*x_2, x_3+x_4,...], now I want to convert it into a binary matrix such as k_i = 0 if v_i = 0, k_i = 1 if v_i >...

LUYANG ZHANG commented,
Hi Jaromil, thanks for replying. Here is the log info for barrier: Read MPS format model from file /project/large_scale_lp/MPS/1_day_out_SellerID1000_500.mps Reading time = 483.99 seconds : 2642357...

LUYANG ZHANG created a post,
Wrong algo of dual simplex
AnsweredHi team, I'm using GUROBI to solve a largesize MPS file which is roughly about 60G. This problem contains 26423572 rows, 265646022 columns, 962620739 nonzeros I tried with three methods, which ar...