Unable to retrieve attribute 'x'

回答済み

Seungmin Song

2023年02月08日 14:00

• 
• 

Hello, 

I keep getting unable to retrieve 'x' error 

I need some direction which way to look for to fix this

Could you please help me on this, Thanks

 

def GeoIndCom(lst_num, eps):
    x_list = z
    pi_list= []
    dQ = metrics.euclidean

    # delta = 1.05

    for i in range(int(lst_num)):
        pi_list.append(float(100))

    print(x_list)
    print(pi_list)
    print(len(x_list))
    print(len(pi_list))

    p_matrix, pre_prob, post_prob = optql(x_list, pi_list, dQ, epsilon=eps)

    f = open("./EM/EM_Uniform_41_" + str(eps) + ".txt", 'w')

    for i in range(len(x_list)):
        str_temp = ""
        for j in range(len(x_list)):
            #print(p_matrix[i,j], end="\t")
            str_temp = str_temp + str(p_matrix[i,j]) + ","

        str_temp = str_temp[0:len(str_temp)-1] + "\n"
        f.write(str_temp)

    f.close()

#
grid_num_list = [110.0]
eps_list = [5.0]

for i in range(len(grid_num_list)):            
    cur_grid_num = grid_num_list[i]
    for k in range(len(eps_list)):
        cur_eps = eps_list[k]
        print("==========================================================================")
        print("Grid Num: ", cur_grid_num)
        print("Epsilon : ", cur_eps)
        print("==========================================================================")
        GeoIndCom(cur_grid_num, cur_eps)
#
print('finished333333')

0

• 正式なコメント

  

  Simranjit Kaur

  • Gurobi Staff

  2026年11月13日 01:49

  This post is more than two years old. Some information may not be up to date. For current information, please check the Gurobi Documentation or Knowledge Base. If you need more help, please create a new post in the community forum, or try Gurobot, our chatbot interface offering instant, expert-level support.
• 

  Riley Clement

  • Gurobi Staff

  2023年02月09日 11:50

  Hi Seungmin,

  Note that the output you provide shows that you have an infeasible model, meaning no solution exists.

  I can see in the traceback on the line ending in "line 278, in optql" that the optql function is trying to access the solution values (the "X" attribute) which of course do not exist if there is no solution.

  The following article in our knowledge base may be a good starting point to help you understand why the model is infeasible: "How do I resolve the error Model is infeasible or unbounded"?
  
  - Riley

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