def get_start_activities(path, log_name, managed_logs, parameters=None):
if parameters is None:
parameters = {}
no_samples = parameters[PARAMETER_NO_SAMPLES] if PARAMETER_NO_SAMPLES in parameters else DEFAULT_MAX_NO_SAMPLES
use_transition = parameters[
PARAMETER_USE_TRANSITION] if PARAMETER_USE_TRANSITION in parameters else DEFAULT_USE_TRANSITION
activity_key = DEFAULT_NAME_KEY if not use_transition else PARAMETER_PM4PYWS_CLASSIFIER
filters = parameters[FILTERS] if FILTERS in parameters else []
parameters[pm4py_constants.PARAMETER_CONSTANT_ACTIVITY_KEY] = activity_key
parameters[pm4py_constants.PARAMETER_CONSTANT_ATTRIBUTE_KEY] = activity_key
folder = os.path.join(path, log_name)
columns = get_columns_to_import(filters, [CASE_CONCEPT_NAME, DEFAULT_NAME_KEY], use_transition=use_transition)
parquet_list = parquet_importer.get_list_parquet(folder)
overall_sa = Counter()
count = 0
for index, pq in enumerate(parquet_list):
pq_basename = Path(pq).name
if pq_basename in managed_logs:
count = count + 1
df = get_filtered_parquet(pq, columns, filters, use_transition=use_transition, parameters=parameters)
ea = Counter(start_activities_filter.get_start_activities(df, parameters=parameters))
overall_sa = overall_sa + ea
if count >= no_samples:
break
for el in overall_sa:
overall_sa[el] = int(overall_sa[el])
return dict(overall_sa)
def get_start_activities(self, parameters=None):
"""
Gets the start activities from the log
Returns
------------
start_activities_dict
Dictionary of start activities
"""
if parameters is None:
parameters = {}
parameters[constants.PARAMETER_CONSTANT_ACTIVITY_KEY] = self.activity_key
parameters[constants.PARAMETER_CONSTANT_ATTRIBUTE_KEY] = self.activity_key
if self.reduced_grouped_dataframe is not None:
parameters[constants.GROUPED_DATAFRAME] = self.reduced_grouped_dataframe
return start_activities_filter.get_start_activities(self.get_reduced_dataframe(), parameters=parameters)
def execute_script():
aa = time.time()
dataframe = csv_import_adapter.import_dataframe_from_path_wo_timeconversion(
inputLog, sep=',')
dataframe = csv_import_adapter.convert_caseid_column_to_str(
dataframe, case_id_glue=CASEID_GLUE)
dataframe = csv_import_adapter.convert_timestamp_columns_in_df(
dataframe, timest_format=TIMEST_FORMAT, timest_columns=TIMEST_COLUMNS)
dataframe = dataframe.sort_values([CASEID_GLUE, TIMEST_KEY])
dataframe_fa = attributes_filter.filter_df_keeping_spno_activities(
dataframe,
activity_key=ACTIVITY_KEY,
max_no_activities=MAX_NO_ACTIVITIES)
bb = time.time()
print("importing log time=", (bb - aa))
parameters_cde = {
constants.PARAMETER_CONSTANT_CASEID_KEY: CASEID_GLUE,
constants.PARAMETER_CONSTANT_TIMESTAMP_KEY: TIMEST_KEY,
"sort_by_column": "caseDuration",
"sort_ascending": False,
"max_ret_cases": 1000
}
cases_desc = case_statistics.get_cases_description(
dataframe, parameters=parameters_cde)
print(cases_desc)
bb2 = time.time()
print("calculating and printing cases_desc = ", (bb2 - bb))
calculate_process_schema_from_df(dataframe_fa, "NOFILTERS_FREQUENCY.svg",
"NOFILTERS_PERFORMANCE.svg")
GENERATED_IMAGES.append("NOFILTERS_FREQUENCY.svg")
GENERATED_IMAGES.append("NOFILTERS_PERFORMANCE.svg")
if DELETE_VARIABLES:
del dataframe_fa
cc = time.time()
print(
"saving initial Inductive Miner process schema along with frequency metrics=",
(cc - bb2))
dataframe_cp = case_filter.filter_on_case_performance(
dataframe,
case_id_glue=CASEID_GLUE,
timestamp_key=TIMEST_KEY,
min_case_performance=100000,
max_case_performance=10000000)
dataframe_cp_fa = attributes_filter.filter_df_keeping_spno_activities(
dataframe_cp,
activity_key=ACTIVITY_KEY,
max_no_activities=MAX_NO_ACTIVITIES)
dataframe_cp = None
if DELETE_VARIABLES:
del dataframe_cp
calculate_process_schema_from_df(dataframe_cp_fa,
"FILTER_CP_FREQUENCY.svg",
"FILTER_CP_PERFORMANCE.svg")
GENERATED_IMAGES.append("FILTER_CP_FREQUENCY.svg")
GENERATED_IMAGES.append("FILTER_CP_PERFORMANCE.svg")
if DELETE_VARIABLES:
del dataframe_cp_fa
dd = time.time()
print("filtering on case performance and generating process schema=",
(dd - cc))
if ENABLE_ATTRIBUTE_FILTER:
parameters_att = {
constants.PARAMETER_CONSTANT_CASEID_KEY: CASEID_GLUE,
constants.PARAMETER_CONSTANT_ATTRIBUTE_KEY: ATTRIBUTE_TO_FILTER,
constants.PARAMETER_CONSTANT_ACTIVITY_KEY: ATTRIBUTE_TO_FILTER,
"positive": True
}
dataframe_att = attributes_filter.apply(dataframe,
ATTRIBUTE_VALUES_TO_FILTER,
parameters=parameters_att)
# dataframe_att = attributes_filter.apply_auto_filter(dataframe, parameters=parameters_att)
print(
"all the activities in the log",
attributes_filter.get_attribute_values(dataframe_att,
ACTIVITY_KEY))
dataframe_att_fa = attributes_filter.filter_df_keeping_spno_activities(
dataframe_att,
activity_key=ACTIVITY_KEY,
max_no_activities=MAX_NO_ACTIVITIES)
if DELETE_VARIABLES:
del dataframe_att
calculate_process_schema_from_df(dataframe_att_fa,
"FILTER_ATT_FREQUENCY.svg",
"FILTER_ATT_PERFORMANCE.svg")
GENERATED_IMAGES.append("FILTER_ATT_FREQUENCY.svg")
GENERATED_IMAGES.append("FILTER_ATT_PERFORMANCE.svg")
if DELETE_VARIABLES:
del dataframe_att_fa
ee = time.time()
print("filtering on attribute values and generating process schema=",
(ee - dd))
ee = time.time()
parameters_sa = {
constants.PARAMETER_CONSTANT_CASEID_KEY: CASEID_GLUE,
constants.PARAMETER_CONSTANT_ACTIVITY_KEY: ACTIVITY_KEY
}
parameters_ea = {
constants.PARAMETER_CONSTANT_CASEID_KEY: CASEID_GLUE,
constants.PARAMETER_CONSTANT_ACTIVITY_KEY: ACTIVITY_KEY
}
start_act = start_activities_filter.get_start_activities(
dataframe, parameters=parameters_sa)
print("start activities in the log = ", start_act)
end_act = end_activities_filter.get_end_activities(
dataframe, parameters=parameters_ea)
print("end activities in the log = ", end_act)
ff = time.time()
print("finding start and end activities along with their count", (ff - ee))
if ENABLE_STARTACT_FILTER:
dataframe_sa = start_activities_filter.apply(dataframe,
STARTACT_TO_FILTER,
parameters=parameters_sa)
# dataframe_sa = start_activities_filter.apply_auto_filter(dataframe, parameters=parameters_sa)
start_act = start_activities_filter.get_start_activities(
dataframe_sa, parameters=parameters_sa)
print("start activities in the filtered log = ", start_act)
dataframe_sa_fa = attributes_filter.filter_df_keeping_spno_activities(
dataframe_sa,
activity_key=ACTIVITY_KEY,
max_no_activities=MAX_NO_ACTIVITIES)
if DELETE_VARIABLES:
del dataframe_sa
calculate_process_schema_from_df(dataframe_sa_fa,
"FILTER_SA_FREQUENCY.svg",
"FILTER_SA_PERFORMANCE.svg")
GENERATED_IMAGES.append("FILTER_SA_FREQUENCY.svg")
GENERATED_IMAGES.append("FILTER_SA_PERFORMANCE.svg")
if DELETE_VARIABLES:
del dataframe_sa_fa
gg = time.time()
if ENABLE_STARTACT_FILTER:
print("filtering start activities time=", (gg - ff))
if ENABLE_ENDACT_FILTER:
dataframe_ea = end_activities_filter.apply(dataframe,
ENDACT_TO_FILTER,
parameters=parameters_ea)
# dataframe_ea = end_activities_filter.apply_auto_filter(dataframe, parameters=parameters_ea)
end_act = end_activities_filter.get_end_activities(
dataframe_ea, parameters=parameters_ea)
print("end activities in the filtered log = ", end_act)
dataframe_ea_fa = attributes_filter.filter_df_keeping_spno_activities(
dataframe_ea,
activity_key=ACTIVITY_KEY,
max_no_activities=MAX_NO_ACTIVITIES)
if DELETE_VARIABLES:
del dataframe_ea
calculate_process_schema_from_df(dataframe_ea_fa,
"FILTER_EA_FREQUENCY.svg",
"FILTER_EA_PERFORMANCE.svg")
GENERATED_IMAGES.append("FILTER_EA_FREQUENCY.svg")
GENERATED_IMAGES.append("FILTER_EA_PERFORMANCE.svg")
if DELETE_VARIABLES:
del dataframe_ea_fa
hh = time.time()
if ENABLE_ENDACT_FILTER:
print("filtering end activities time=", (hh - gg))
if REMOVE_GENERATED_IMAGES:
for image in GENERATED_IMAGES:
os.remove(image)
def apply(dataframe, parameters=None):
"""
Gets the performance DFG
Parameters
------------
dataframe
Dataframe
parameters
Parameters of the algorithm
Returns
------------
base64
Base64 of an SVG representing the model
model
Text representation of the model
format
Format of the model
"""
if parameters is None:
parameters = {}
decreasingFactor = parameters[
"decreasingFactor"] if "decreasingFactor" in parameters else constants.DEFAULT_DEC_FACTOR
activity_key = parameters[
pm4_constants.
PARAMETER_CONSTANT_ACTIVITY_KEY] if pm4_constants.PARAMETER_CONSTANT_ACTIVITY_KEY in parameters else xes.DEFAULT_NAME_KEY
timestamp_key = parameters[
pm4_constants.
PARAMETER_CONSTANT_TIMESTAMP_KEY] if pm4_constants.PARAMETER_CONSTANT_TIMESTAMP_KEY in parameters else xes.DEFAULT_TIMESTAMP_KEY
case_id_glue = parameters[
pm4_constants.
PARAMETER_CONSTANT_CASEID_KEY] if pm4_constants.PARAMETER_CONSTANT_CASEID_KEY in parameters else CASE_CONCEPT_NAME
parameters[pm4_constants.RETURN_EA_COUNT_DICT_AUTOFILTER] = True
dataframe = attributes_filter.filter_df_keeping_spno_activities(
dataframe,
activity_key=activity_key,
max_no_activities=constants.MAX_NO_ACTIVITIES)
dataframe, end_activities = auto_filter.apply_auto_filter(
dataframe, parameters=parameters)
end_activities = list(end_activities.keys())
[dfg, dfg_perf
] = df_statistics.get_dfg_graph(dataframe,
activity_key=activity_key,
timestamp_key=timestamp_key,
case_id_glue=case_id_glue,
sort_caseid_required=False,
sort_timestamp_along_case_id=False,
measure="both")
activities_count = attributes_filter.get_attribute_values(
dataframe, activity_key, parameters=parameters)
activities = list(activities_count.keys())
dfg = clean_dfg_based_on_noise_thresh(
dfg,
activities,
decreasingFactor * constants.DEFAULT_DFG_CLEAN_MULTIPLIER,
parameters=parameters)
dfg_perf = {x: y for x, y in dfg_perf.items() if x in dfg}
start_activities = list(
start_activities_filter.get_start_activities(
dataframe, parameters=parameters).keys())
gviz = dfg_vis_factory.apply(dfg_perf,
activities_count=activities_count,
variant="performance",
parameters={
"format": "svg",
"start_activities": start_activities,
"end_activities": end_activities
})
gviz_base64 = base64.b64encode(str(gviz).encode('utf-8'))
ret_graph = get_graph.get_graph_from_dfg(dfg, start_activities,
end_activities)
net, im, fm = dfg_conv_factory.apply(dfg,
parameters={
"start_activities":
start_activities,
"end_activities": end_activities
})
return get_base64_from_gviz(gviz), export_petri_as_string(
net, im, fm
), ".pnml", "parquet", activities, start_activities, end_activities, gviz_base64, ret_graph, "dfg", "perf", None, "", activity_key
def calculate_process_schema_composite_object(path,
log_name,
managed_logs,
parameters=None):
if parameters is None:
parameters = {}
performance_required = parameters[
"performance_required"] if "performance_required" in parameters else False
no_samples = parameters[
PARAMETER_NO_SAMPLES] if PARAMETER_NO_SAMPLES in parameters else DEFAULT_MAX_NO_SAMPLES
use_transition = parameters[
PARAMETER_USE_TRANSITION] if PARAMETER_USE_TRANSITION in parameters else DEFAULT_USE_TRANSITION
activity_key = DEFAULT_NAME_KEY if not use_transition else "@@classifier"
filters = parameters[FILTERS] if FILTERS in parameters else []
parameters[pm4py_constants.PARAMETER_CONSTANT_ACTIVITY_KEY] = activity_key
if performance_required:
columns = get_columns_to_import(
filters,
[CASE_CONCEPT_NAME, DEFAULT_NAME_KEY, DEFAULT_TIMESTAMP_KEY],
use_transition=use_transition)
else:
columns = get_columns_to_import(filters,
[CASE_CONCEPT_NAME, DEFAULT_NAME_KEY],
use_transition=use_transition)
if pm4py_constants.PARAMETER_CONSTANT_ATTRIBUTE_KEY in parameters:
columns.append(
parameters[pm4py_constants.PARAMETER_CONSTANT_ATTRIBUTE_KEY])
activity_key, parameters[
pm4py_constants.PARAMETER_CONSTANT_ATTRIBUTE_KEY] = parameters[
pm4py_constants.PARAMETER_CONSTANT_ATTRIBUTE_KEY], activity_key
else:
parameters[
pm4py_constants.PARAMETER_CONSTANT_ATTRIBUTE_KEY] = activity_key
folder = os.path.join(path, log_name)
parquet_list = parquet_importer.get_list_parquet(folder)
frequency_dfg = Counter()
performance_dfg = Counter()
overall_ea = Counter()
overall_sa = Counter()
values = Counter({})
events = 0
cases = 0
count = 0
for index, pq in enumerate(parquet_list):
pq_basename = Path(pq).name
if pq_basename in managed_logs:
count = count + 1
df = get_filtered_parquet(pq,
columns,
filters,
use_transition=use_transition,
parameters=parameters)
if performance_required:
f_dfg, p_dfg = df_statistics.get_dfg_graph(
df,
activity_key=activity_key,
sort_timestamp_along_case_id=False,
sort_caseid_required=False,
measure="both")
else:
f_dfg = df_statistics.get_dfg_graph(
df,
activity_key=activity_key,
sort_timestamp_along_case_id=False,
sort_caseid_required=False)
f_dfg = Counter(f_dfg)
if performance_required:
for k in p_dfg:
if k not in performance_dfg:
performance_dfg[k] = p_dfg[k]
else:
performance_dfg[k] = (
frequency_dfg[k] * performance_dfg[k] + f_dfg[k] *
p_dfg[k]) / (frequency_dfg[k] + f_dfg[k])
frequency_dfg = frequency_dfg + f_dfg
ea = Counter(
end_activities_filter.get_end_activities(
df, parameters=parameters))
overall_ea = overall_ea + ea
sa = Counter(
start_activities_filter.get_start_activities(
df, parameters=parameters))
overall_sa = overall_sa + sa
values = values + Counter(dict(df[activity_key].value_counts()))
events = events + len(df)
cases = cases + df[CASE_CONCEPT_NAME].nunique()
if count >= no_samples:
break
returned_dict = {}
returned_dict["events"] = events
returned_dict["cases"] = cases
values = dict(values)
for el in values:
values[el] = int(values[el])
returned_dict["activities"] = values
overall_sa = dict(overall_sa)
for el in overall_sa:
overall_sa[el] = int(overall_sa[el])
returned_dict["start_activities"] = overall_sa
overall_ea = dict(overall_ea)
for el in overall_ea:
overall_ea[el] = int(overall_ea[el])
returned_dict["end_activities"] = overall_ea
returned_dict_freq = {}
for el in frequency_dfg:
returned_dict_freq[el[0] + "@@" + el[1]] = int(frequency_dfg[el])
returned_dict["frequency_dfg"] = returned_dict_freq
if performance_required:
returned_dict_perf = {}
for el in performance_dfg:
returned_dict_perf[el[0] + "@@" + el[1]] = float(
performance_dfg[el])
returned_dict["performance_dfg"] = returned_dict_perf
return returned_dict
def apply(dataframe, parameters=None):
"""
Gets the Petri net through Inductive Miner, decorated by performance metric
Parameters
------------
dataframe
Dataframe
parameters
Parameters of the algorithm
Returns
------------
base64
Base64 of an SVG representing the model
model
Text representation of the model
format
Format of the model
"""
if parameters is None:
parameters = {}
decreasingFactor = parameters[
"decreasingFactor"] if "decreasingFactor" in parameters else constants.DEFAULT_DEC_FACTOR
activity_key = parameters[
pm4_constants.
PARAMETER_CONSTANT_ACTIVITY_KEY] if pm4_constants.PARAMETER_CONSTANT_ACTIVITY_KEY in parameters else xes.DEFAULT_NAME_KEY
timestamp_key = parameters[
pm4_constants.
PARAMETER_CONSTANT_TIMESTAMP_KEY] if pm4_constants.PARAMETER_CONSTANT_TIMESTAMP_KEY in parameters else xes.DEFAULT_TIMESTAMP_KEY
case_id_glue = parameters[
pm4_constants.
PARAMETER_CONSTANT_CASEID_KEY] if pm4_constants.PARAMETER_CONSTANT_CASEID_KEY in parameters else CASE_CONCEPT_NAME
parameters[pm4_constants.RETURN_EA_COUNT_DICT_AUTOFILTER] = True
dataframe = attributes_filter.filter_df_keeping_spno_activities(
dataframe,
activity_key=activity_key,
max_no_activities=constants.MAX_NO_ACTIVITIES)
dataframe, end_activities = auto_filter.apply_auto_filter(
dataframe, parameters=parameters)
end_activities = list(end_activities.keys())
activities_count = attributes_filter.get_attribute_values(
dataframe, activity_key, parameters=parameters)
activities = list(activities_count.keys())
start_activities = list(
start_activities_filter.get_start_activities(
dataframe, parameters=parameters).keys())
[dfg, dfg_perf
] = df_statistics.get_dfg_graph(dataframe,
activity_key=activity_key,
timestamp_key=timestamp_key,
case_id_glue=case_id_glue,
sort_caseid_required=False,
sort_timestamp_along_case_id=False,
measure="both")
dfg = clean_dfg_based_on_noise_thresh(
dfg,
activities,
decreasingFactor * constants.DEFAULT_DFG_CLEAN_MULTIPLIER,
parameters=parameters)
dfg_perf = {x: y for x, y in dfg_perf.items() if x in dfg}
net, im, fm = inductive_miner.apply_dfg(dfg,
parameters,
activities=activities,
start_activities=start_activities,
end_activities=end_activities)
spaths = get_shortest_paths(net)
bpmn_graph, el_corr, inv_el_corr, el_corr_keys_map = petri_to_bpmn.apply(
net, im, fm)
aggregated_statistics = get_decorations_from_dfg_spaths_acticount(
net, dfg_perf, spaths, activities_count, variant="performance")
bpmn_aggreg_statistics = convert_performance_map.convert_performance_map_to_bpmn(
aggregated_statistics, inv_el_corr)
#bpmn_graph = bpmn_embedding.embed_info_into_bpmn(bpmn_graph, bpmn_aggreg_statistics, "performance")
bpmn_graph = bpmn_diagram_layouter.apply(bpmn_graph)
bpmn_string = bpmn_exporter.get_string_from_bpmn(bpmn_graph)
gviz = bpmn_vis_factory.apply_petri(
net,
im,
fm,
aggregated_statistics=aggregated_statistics,
variant="performance",
parameters={"format": "svg"})
gviz2 = bpmn_vis_factory.apply_petri(
net,
im,
fm,
aggregated_statistics=aggregated_statistics,
variant="performance",
parameters={"format": "dot"})
gviz_base64 = get_base64_from_file(gviz2.name)
ret_graph = get_graph.get_graph_from_petri(net, im, fm)
return get_base64_from_file(gviz.name), export_petri_as_string(
net, im, fm
), ".pnml", "parquet", activities, start_activities, end_activities, gviz_base64, ret_graph, "indbpmn", "perf", bpmn_string, ".bpmn", activity_key
def apply(dataframe, parameters=None):
"""
Gets the Petri net through Inductive Miner, decorated by frequency metric
Parameters
------------
dataframe
Dataframe
parameters
Parameters of the algorithm
Returns
------------
base64
Base64 of an SVG representing the model
model
Text representation of the model
format
Format of the model
"""
if parameters is None:
parameters = {}
decreasingFactor = parameters[
"decreasingFactor"] if "decreasingFactor" in parameters else constants.DEFAULT_DEC_FACTOR
activity_key = parameters[
pm4_constants.
PARAMETER_CONSTANT_ACTIVITY_KEY] if pm4_constants.PARAMETER_CONSTANT_ACTIVITY_KEY in parameters else xes.DEFAULT_NAME_KEY
timestamp_key = parameters[
pm4_constants.
PARAMETER_CONSTANT_TIMESTAMP_KEY] if pm4_constants.PARAMETER_CONSTANT_TIMESTAMP_KEY in parameters else xes.DEFAULT_TIMESTAMP_KEY
case_id_glue = parameters[
pm4_constants.
PARAMETER_CONSTANT_CASEID_KEY] if pm4_constants.PARAMETER_CONSTANT_CASEID_KEY in parameters else CASE_CONCEPT_NAME
parameters[pm4_constants.RETURN_EA_COUNT_DICT_AUTOFILTER] = True
dataframe = attributes_filter.filter_df_keeping_spno_activities(
dataframe,
activity_key=activity_key,
max_no_activities=constants.MAX_NO_ACTIVITIES)
dataframe, end_activities = auto_filter.apply_auto_filter(
dataframe, parameters=parameters)
end_activities = list(end_activities.keys())
activities_count = attributes_filter.get_attribute_values(
dataframe, activity_key, parameters=parameters)
activities = list(activities_count.keys())
start_activities = list(
start_activities_filter.get_start_activities(
dataframe, parameters=parameters).keys())
dfg = df_statistics.get_dfg_graph(dataframe,
activity_key=activity_key,
timestamp_key=timestamp_key,
case_id_glue=case_id_glue,
sort_caseid_required=False,
sort_timestamp_along_case_id=False)
dfg = clean_dfg_based_on_noise_thresh(
dfg,
activities,
decreasingFactor * constants.DEFAULT_DFG_CLEAN_MULTIPLIER,
parameters=parameters)
net, im, fm = inductive_miner.apply_dfg(dfg,
parameters,
activities=activities,
start_activities=start_activities,
end_activities=end_activities)
spaths = get_shortest_paths(net)
aggregated_statistics = get_decorations_from_dfg_spaths_acticount(
net, dfg, spaths, activities_count, variant="frequency")
gviz = pn_vis_factory.apply(net,
im,
fm,
parameters={"format": "svg"},
variant="frequency",
aggregated_statistics=aggregated_statistics)
gviz_base64 = base64.b64encode(str(gviz).encode('utf-8'))
ret_graph = get_graph.get_graph_from_petri(net, im, fm)
return get_base64_from_gviz(gviz), export_petri_as_string(
net, im, fm
), ".pnml", "parquet", activities, start_activities, end_activities, gviz_base64, ret_graph, "inductive", "freq", None, "", activity_key
def apply_pandas(df, parameters=None):
"""
Discovers a Petri net using Heuristics Miner
Parameters
------------
df
Pandas dataframe
parameters
Possible parameters of the algorithm,
including: activity_key, case_id_glue, timestamp_key,
dependency_thresh, and_measure_thresh, min_act_count, min_dfg_occurrences, dfg_pre_cleaning_noise_thresh,
loops_length_two_thresh
Returns
------------
net
Petri net
im
Initial marking
fm
Final marking
"""
if parameters is None:
parameters = {}
activity_key = parameters[
constants.
PARAMETER_CONSTANT_ACTIVITY_KEY] if constants.PARAMETER_CONSTANT_ACTIVITY_KEY in parameters else xes.DEFAULT_NAME_KEY
case_id_glue = parameters[
constants.
PARAMETER_CONSTANT_CASEID_KEY] if constants.PARAMETER_CONSTANT_CASEID_KEY in parameters else CASE_CONCEPT_NAME
timestamp_key = parameters[
constants.
PARAMETER_CONSTANT_TIMESTAMP_KEY] if constants.PARAMETER_CONSTANT_TIMESTAMP_KEY in parameters else xes.DEFAULT_TIMESTAMP_KEY
start_activities = pd_sa_filter.get_start_activities(df,
parameters=parameters)
end_activities = pd_ea_filter.get_end_activities(df, parameters=parameters)
activities_occurrences = pd_attributes.get_attribute_values(
df, activity_key, parameters=parameters)
activities = list(activities_occurrences.keys())
if timestamp_key in df:
dfg = df_statistics.get_dfg_graph(df,
case_id_glue=case_id_glue,
activity_key=activity_key,
timestamp_key=timestamp_key)
dfg_window_2 = df_statistics.get_dfg_graph(df,
case_id_glue=case_id_glue,
activity_key=activity_key,
timestamp_key=timestamp_key,
window=2)
frequency_triples = get_freq_triples.get_freq_triples(
df,
case_id_glue=case_id_glue,
activity_key=activity_key,
timestamp_key=timestamp_key)
else:
dfg = df_statistics.get_dfg_graph(df,
case_id_glue=case_id_glue,
activity_key=activity_key,
sort_timestamp_along_case_id=False)
dfg_window_2 = df_statistics.get_dfg_graph(
df,
case_id_glue=case_id_glue,
activity_key=activity_key,
sort_timestamp_along_case_id=False,
window=2)
frequency_triples = get_freq_triples.get_freq_triples(
df,
case_id_glue=case_id_glue,
activity_key=activity_key,
timestamp_key=timestamp_key,
sort_timestamp_along_case_id=False)
heu_net = apply_heu_dfg(dfg,
activities=activities,
activities_occurrences=activities_occurrences,
start_activities=start_activities,
end_activities=end_activities,
dfg_window_2=dfg_window_2,
freq_triples=frequency_triples,
parameters=parameters)
net, im, fm = hn_conv_factory.apply(heu_net, parameters=parameters)
return net, im, fm
def apply(dataframe, parameters=None):
"""
Gets the performance HNet
Parameters
------------
dataframe
Dataframe
parameters
Parameters of the algorithm
Returns
------------
base64
Base64 of an SVG representing the model
model
Text representation of the model
format
Format of the model
"""
if parameters is None:
parameters = {}
decreasingFactor = parameters[
"decreasingFactor"] if "decreasingFactor" in parameters else ws_constants.DEFAULT_DEC_FACTOR
activity_key = parameters[
pm4_constants.
PARAMETER_CONSTANT_ACTIVITY_KEY] if pm4_constants.PARAMETER_CONSTANT_ACTIVITY_KEY in parameters else xes.DEFAULT_NAME_KEY
timestamp_key = parameters[
pm4_constants.
PARAMETER_CONSTANT_TIMESTAMP_KEY] if pm4_constants.PARAMETER_CONSTANT_TIMESTAMP_KEY in parameters else xes.DEFAULT_TIMESTAMP_KEY
case_id_glue = parameters[
pm4_constants.
PARAMETER_CONSTANT_CASEID_KEY] if pm4_constants.PARAMETER_CONSTANT_CASEID_KEY in parameters else CASE_CONCEPT_NAME
parameters[pm4_constants.RETURN_EA_COUNT_DICT_AUTOFILTER] = True
dataframe = attributes_filter.filter_df_keeping_spno_activities(
dataframe,
activity_key=activity_key,
max_no_activities=ws_constants.MAX_NO_ACTIVITIES)
dataframe, end_activities_count = auto_filter.apply_auto_filter(
dataframe, parameters=parameters)
activities_count = attributes_filter.get_attribute_values(
dataframe, activity_key, parameters=parameters)
start_activities_count = start_activities_filter.get_start_activities(
dataframe, parameters=parameters)
activities = list(activities_count.keys())
start_activities = list(start_activities_count.keys())
end_activities = list(end_activities_count.keys())
dfg_frequency, dfg_performance = df_statistics.get_dfg_graph(
dataframe,
case_id_glue=case_id_glue,
activity_key=activity_key,
timestamp_key=timestamp_key,
measure="both",
sort_caseid_required=False,
sort_timestamp_along_case_id=False)
heu_net = HeuristicsNet(dfg_frequency,
performance_dfg=dfg_performance,
activities=activities,
start_activities=start_activities,
end_activities=end_activities,
activities_occurrences=activities_count)
heu_net.calculate(dfg_pre_cleaning_noise_thresh=ws_constants.
DEFAULT_DFG_CLEAN_MULTIPLIER * decreasingFactor)
vis = heu_vis_factory.apply(heu_net, parameters={"format": "svg"})
vis2 = heu_vis_factory.apply(heu_net, parameters={"format": "dot"})
gviz_base64 = get_base64_from_file(vis2.name)
return get_base64_from_file(vis.name), None, "", "parquet", activities, start_activities, end_activities, gviz_base64, [], "heuristics", "perf", None, "", activity_key
def apply(dataframe, parameters=None):
"""
Gets the process tree using Inductive Miner Directly-Follows
Parameters
------------
dataframe
Dataframe
parameters
Parameters of the algorithm
Returns
------------
base64
Base64 of an SVG representing the model
model
Text representation of the model
format
Format of the model
"""
if parameters is None:
parameters = {}
decreasingFactor = parameters[
"decreasingFactor"] if "decreasingFactor" in parameters else constants.DEFAULT_DEC_FACTOR
activity_key = parameters[
pm4_constants.
PARAMETER_CONSTANT_ACTIVITY_KEY] if pm4_constants.PARAMETER_CONSTANT_ACTIVITY_KEY in parameters else xes.DEFAULT_NAME_KEY
timestamp_key = parameters[
pm4_constants.
PARAMETER_CONSTANT_TIMESTAMP_KEY] if pm4_constants.PARAMETER_CONSTANT_TIMESTAMP_KEY in parameters else xes.DEFAULT_TIMESTAMP_KEY
case_id_glue = parameters[
pm4_constants.
PARAMETER_CONSTANT_CASEID_KEY] if pm4_constants.PARAMETER_CONSTANT_CASEID_KEY in parameters else CASE_CONCEPT_NAME
parameters[pm4_constants.RETURN_EA_COUNT_DICT_AUTOFILTER] = True
dataframe = attributes_filter.filter_df_keeping_spno_activities(
dataframe,
activity_key=activity_key,
max_no_activities=constants.MAX_NO_ACTIVITIES)
dataframe, end_activities = auto_filter.apply_auto_filter(
dataframe, parameters=parameters)
end_activities = list(end_activities.keys())
activities_count = attributes_filter.get_attribute_values(
dataframe, activity_key, parameters=parameters)
activities = list(activities_count.keys())
start_activities = list(
start_activities_filter.get_start_activities(
dataframe, parameters=parameters).keys())
dfg = df_statistics.get_dfg_graph(dataframe,
activity_key=activity_key,
timestamp_key=timestamp_key,
case_id_glue=case_id_glue,
sort_caseid_required=False,
sort_timestamp_along_case_id=False)
dfg = clean_dfg_based_on_noise_thresh(
dfg,
activities,
decreasingFactor * constants.DEFAULT_DFG_CLEAN_MULTIPLIER,
parameters=parameters)
tree = inductive_miner.apply_tree_dfg(dfg,
parameters,
activities=activities,
start_activities=start_activities,
end_activities=end_activities)
gviz = pt_vis_factory.apply(tree, parameters={"format": "svg"})
gviz_base64 = base64.b64encode(str(gviz).encode('utf-8'))
return get_base64_from_gviz(gviz), None, "", "parquet", activities, start_activities, end_activities, gviz_base64, [], "tree", "freq", None, "", activity_key
def apply(df, parameters=None):
"""
Discover a StarStar model from an ad-hoc built dataframe
Parameters
-------------
df
Dataframe
parameters
Possible parameters of the algorithm
Returns
-------------
perspectives_heu
Dictionary of perspectives associated to Heuristics Net
"""
if parameters is None:
parameters = {}
if len(df) == 0:
df = pd.DataFrame({"event_id": [], "event_activity": []})
dependency_thresh = parameters[
DEPENDENCY_THRESH] if DEPENDENCY_THRESH in parameters else DEFAULT_DEPENDENCY_THRESH
and_measure_thresh = parameters[
AND_MEASURE_THRESH] if AND_MEASURE_THRESH in parameters else DEFAULT_AND_MEASURE_THRESH
min_act_count = parameters[
MIN_ACT_COUNT] if MIN_ACT_COUNT in parameters else DEFAULT_MIN_ACT_COUNT
min_dfg_occurrences = parameters[
MIN_DFG_OCCURRENCES] if MIN_DFG_OCCURRENCES in parameters else DEFAULT_MIN_DFG_OCCURRENCES
dfg_pre_cleaning_noise_thresh = parameters[
DFG_PRE_CLEANING_NOISE_THRESH] if DFG_PRE_CLEANING_NOISE_THRESH in parameters else DEFAULT_DFG_PRE_CLEANING_NOISE_THRESH
decreasing_factor_sa_ea = parameters[
DECREASING_FACTOR] if DECREASING_FACTOR in parameters else 0.5
performance = parameters[
PERFORMANCE] if PERFORMANCE in parameters else False
perspectives = parameters[
PERSPECTIVES] if PERSPECTIVES in parameters else None
use_timestamp = parameters[
USE_TIMESTAMP] if USE_TIMESTAMP in parameters else True
sort_caseid_required = parameters[
SORT_CASEID_REQUIRED] if SORT_CASEID_REQUIRED in parameters else True
sort_timestamp_required = parameters[
SORT_TIMESTAMP_REQUIRED] if SORT_TIMESTAMP_REQUIRED in parameters else True
perspectives_heu = {}
r = lambda: random.randint(0, 255)
if perspectives is None:
perspectives = list(x for x in df.columns if not x.startswith("event"))
# del perspectives[perspectives.index("event_id")]
# del perspectives[perspectives.index("event_activity")]
# if "event_timestamp" in perspectives:
# del perspectives[perspectives.index("event_timestamp")]
perspectives = sorted(perspectives)
activities_occurrences = attributes_filter.get_attribute_values(
df.groupby("event_id").first().reset_index(), "event_activity")
activities_occurrences = {
x: y
for x, y in activities_occurrences.items() if y >= min_act_count
}
for p_ind, p in enumerate(perspectives):
has_timestamp = False
if "event_timestamp" in df.columns and use_timestamp:
proj_df = df[["event_id", "event_activity", "event_timestamp",
p]].dropna(subset=[p])
has_timestamp = True
else:
proj_df = df[["event_id", "event_activity", p]].dropna(subset=[p])
"""
proj_df_activities = Counter(list(proj_df["event_activity"]))
proj_df_activities = set(x for x in proj_df_activities if proj_df_activities[x] >= min_act_count)
proj_df = proj_df[proj_df["event_activity"].isin(proj_df_activities)]
print(proj_df_activities)"""
# proj_df = proj_df.groupby(["event_id", "event_activity", p]).first().reset_index()
# print('sii')
proj_df = proj_df[proj_df["event_activity"].isin(
activities_occurrences)]
proj_df_first = proj_df.groupby("event_id").first().reset_index()
if performance:
dfg_frequency, dfg_performance = df_statistics.get_dfg_graph(
proj_df,
activity_key="event_activity",
case_id_glue=p,
timestamp_key="event_timestamp",
measure="both",
sort_caseid_required=sort_caseid_required,
sort_timestamp_along_case_id=sort_timestamp_required)
else:
if has_timestamp:
dfg_frequency = df_statistics.get_dfg_graph(
proj_df,
activity_key="event_activity",
case_id_glue=p,
timestamp_key="event_timestamp",
sort_caseid_required=sort_caseid_required,
sort_timestamp_along_case_id=sort_timestamp_required)
else:
dfg_frequency = df_statistics.get_dfg_graph(
proj_df,
activity_key="event_activity",
case_id_glue=p,
sort_timestamp_along_case_id=False,
sort_caseid_required=sort_caseid_required)
if len(dfg_frequency) > 0:
this_color = COLORS[p_ind] if p_ind < len(
COLORS) else '#%02X%02X%02X' % (r(), r(), r())
parameters_sa_ea = copy(parameters)
parameters_sa_ea[constants.PARAMETER_CONSTANT_CASEID_KEY] = p
parameters_sa_ea[
constants.PARAMETER_CONSTANT_ATTRIBUTE_KEY] = "event_activity"
parameters_sa_ea[
constants.PARAMETER_CONSTANT_ACTIVITY_KEY] = "event_activity"
start_activities = start_activities_filter.get_start_activities(
proj_df, parameters=parameters_sa_ea)
end_activities = end_activities_filter.get_end_activities(
proj_df, parameters=parameters_sa_ea)
start_activities = clean_sa_ea(start_activities,
decreasing_factor_sa_ea)
end_activities = clean_sa_ea(end_activities,
decreasing_factor_sa_ea)
max_entry = dict()
max_exit = dict()
for x in dfg_frequency:
a1 = x[0]
a2 = x[1]
y = dfg_frequency[x]
if not a1 == a2:
if not a2 in max_entry or max_entry[a2][1] < y:
max_entry[a2] = [x, y]
if not a1 in max_exit or max_exit[a1][1] < y:
max_exit[a1] = [x, y]
max_entry = set(y[0] for y in max_entry.values())
max_exit = set(y[0] for y in max_exit.values())
#max_entry = {}
#max_exit = {}
dfg_frequency = {
x: y
for x, y in dfg_frequency.items()
if y >= min_dfg_occurrences or x in max_entry or x in max_exit
}
activities = list(activities_occurrences.keys())
if performance:
dfg_performance = {
x: y
for x, y in dfg_performance.items() if x in dfg_frequency
}
heu_net = HeuristicsNet(
dfg_frequency,
start_activities=start_activities,
end_activities=end_activities,
default_edges_color=this_color,
net_name=p,
activities=activities,
activities_occurrences=activities_occurrences,
performance_dfg=dfg_performance)
else:
heu_net = HeuristicsNet(
dfg_frequency,
start_activities=start_activities,
end_activities=end_activities,
default_edges_color=this_color,
net_name=p,
activities=activities,
activities_occurrences=activities_occurrences)
heu_net.calculate(
dependency_thresh=dependency_thresh,
and_measure_thresh=and_measure_thresh,
min_act_count=1,
min_dfg_occurrences=1,
dfg_pre_cleaning_noise_thresh=dfg_pre_cleaning_noise_thresh)
if len(heu_net.nodes) > 0:
perspectives_heu[p] = heu_net
return perspectives_heu