SMILE cannot create a network, error -42

[BayesFusionUser123]

I got an error when creating a network using the code below:

Code: Select all

from functools import partial
import pysmile
import pysmile_license


def create_cpt_node(net, id, name, outcomes, x_pos, y_pos):
    
    handle = net.add_node(pysmile.NodeType.CPT, id)
    
    net.set_node_name(handle, name)
    net.set_node_position(handle, x_pos, y_pos, 85, 55)
    
    initial_outcome_count = net.get_outcome_count(handle)
    
    for i in range(0, initial_outcome_count):
        net.set_outcome_id(handle, i, outcomes[i])
    
    for i in range(initial_outcome_count, len(outcomes)):
        net.add_outcome(handle, outcomes[i])
        
    return handle


def construct_SMILE_network_with_n_parents(n_parents):
    """
    Construct SMILE predefined network and save it to output folder
    
    Build a causal DAG:
    
    P_1 -> T -> O
    P_2 -> T -> O
    ...
    P_n -> T -> O
    
    """
    var_unique_val_dict = {}
    var_unique_val_dict["T"] = ["T___1", "T___0"]
    var_unique_val_dict["O"] = ["O___1", "O___0"]
    for i in range(n_parents):
        var_unique_val_dict[f"P_{i + 1}"] = [f"P_{i + 1}___1", f"P_{i + 1}___0"]
    #endfor
    
    
    predefined_hybrid_net = pysmile.Network()

    # (1) add all nodes properly
    x = 10
    var_to_val_list_dict = {}

    for var_name in var_unique_val_dict.keys():
        #print(var_name)
        var_val_list = var_unique_val_dict[var_name]
        var_to_val_list_dict[var_name] = var_val_list
        create_cpt_node(predefined_hybrid_net, var_name, var_name, var_val_list, 10, x)
        x += 10
    #endfor

    print("SMILE var_to_val_list_dict:")
    for var_n, var_val_list in var_to_val_list_dict.items():
        print(f"{var_n}: {var_val_list}")
    #endfor
    
    
    # (2)
    for i in range(n_parents):
        parent = f"P_{i+1}"
        predefined_hybrid_net.add_arc(parent, "T")
        print(f"method-[construct_SMILE_network_with_n_parents] add_arc: {parent} -> T")
    #endfor
    predefined_hybrid_net.add_arc('T', "O")
    
    return predefined_hybrid_net


SMILE_net = construct_SMILE_network_with_n_parents(37)

The error message is like below:

Code: Select all

Traceback (most recent call last):
  File "20260430_SMILE_network_creation_error_-42.py", line 75, in <module>
    SMILE_net = construct_SMILE_network_with_n_parents(37)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "20260430_SMILE_network_creation_error_-42.py", line 67, in construct_SMILE_network_with_n_parents
    predefined_hybrid_net.add_arc(parent, "T")
pysmile.SMILEException: SMILE Error -42 in function Network.AddArc

Could you please tell me the reason of this error, how to correct it and what does error -42 mean?
Thanks.

[shooltz[BayesFusion]]

Error code -42 indicates an out-of-memory exception caught by SMILE. In your case, it's most likely at add_arc call used to connect P_{i+1} and T.

In SMILE, the single CPT can have 2^31 elements - with all binary nodes this would be a node with 30 parents.