Source code for pm4py.algo.transformation.ocel.features.objects.object_num_attributes

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from pm4py.objects.ocel.obj import OCEL
from typing import Optional, Dict, Any
from enum import Enum
from pm4py.util import exec_utils

[docs]class Parameters(Enum): OBJECT_NUM_ATTRIBUTES = "num_obj_attr"
[docs]def apply(ocel: OCEL, parameters: Optional[Dict[Any, Any]] = None): """ Enables the extraction of a given collection of numeric object attributes in the feature table (specified inside the "num_obj_attr" parameter) Parameters ---------------- ocel OCEL parameters Parameters of the algorithm: - Parameters.OBJECT_NUM_ATTRIBUTES => collection of numeric attributes to consider for feature extraction Returns ---------------- data Extracted feature values feature_names Feature names """ if parameters is None: parameters = {} data = [] feature_names = [] ordered_objects = list(ocel.objects[ocel.object_id_column]) object_num_attributes = exec_utils.get_param_value(Parameters.OBJECT_NUM_ATTRIBUTES, parameters, None) if object_num_attributes is not None: feature_names = feature_names + ["@@event_num_"+x for x in object_num_attributes] attr_values = {} for attr in object_num_attributes: values = ocel.objects[[ocel.object_id_column, attr]].dropna(subset=[attr]).to_dict("records") values = {x[ocel.object_id_column]: x[attr] for x in values} attr_values[attr] = values for obj in ordered_objects: data.append([]) for attr in object_num_attributes: data[-1].append(float(attr_values[attr][obj]) if obj in attr_values[attr] else 0.0) return data, feature_names