Getting possible variants of sequences from BPMN graph

[solterbeck]

Hi PM4PY guys,

I appreciate your great work very much. One question I have:

Is there any chance to get a list of the possible allowed sequences from a BPMN file? My current approach is:

• BPMN will be loaded from a given BPMN file (cfg['graphs']['bpmn'])
• Convert to a process tree
• Generate of a log out of a process tree
• Get distinct variante from log
• Print out a list of possible sequences (= distinct variants of log)

Code snippet:

 def __init__(self):
    bpmn_graph = pm4py.read_bpmn(cfg['graphs']['bpmn'])
    net, im, fm = bpmn_converter.apply(bpmn_graph)
    tree = wf_net_converter.apply(net, im, fm)  
    log = semantics.generate_log(tree, no_traces=100000)
    variants = variants_filter.get_variants(log)
    file = open(cfg['graphs']['variants'], 'w')
    i = 0
    for key in variants.keys():
        file.write(str(i) + ': ' + str(key) + '\n')
        i = i + 1
    file.close()

Statistically I can assume, that getting a log of 100000 events would meet all possible sequences. How can I then make sure, getting all sequences? Did I oversee an another possibility?

Thanks and best regards Sven

[fit-alessandro-berti]

Dear solterbeck,

If you can obtain a process tree out of the BPMN, you can use the extensive playout of the process tree to get all the combinations.

Please take a look at the "Extensive playout" section in https://pm4py.fit.fraunhofer.de/documentation#simulation

[solterbeck]

Dear Alessandro,

thanks for your quick answer. It works.