case_attribute

Case Attribute Discovery

Python package to discover case attributes from an event log and their value distribution (stochastic if discrete, probability distribution if continuous).

Example of use

import pandas as pd

from pix_framework.discovery.case_attribute.discovery import discover_case_attributes
from pix_framework.io.event_log import DEFAULT_CSV_IDS

# Read event log
event_log = pd.read_csv("path_to_event_log.csv")

# Simple call
case_attributes = discover_case_attributes(
    event_log=event_log,
    log_ids=DEFAULT_CSV_IDS
)

# Call specifying the columns to not take into account for case attribute analysis
case_attributes = discover_case_attributes(
    event_log=event_log,
    log_ids=DEFAULT_CSV_IDS,
    avoid_columns=[
        DEFAULT_CSV_IDS.case, DEFAULT_CSV_IDS.activity,
        DEFAULT_CSV_IDS.start_time, DEFAULT_CSV_IDS.end_time
    ]
)

# Call specifying a confidence (or noise) threshold to allow a certain noise 
# in the variability of the attribute along the trace: 
#  - For each trace, the confidence of the most frequent value is computed (i.e. 
#  the % of activity instances from that trace with that same value). For example, 
#  a trace with 8 activity instances with 'amount'=100 and 2 with 'amount'=150 
#  will have a confidence of 0.8.
#  - The average confidence in all traces must be higher or equal to the specified
#  one to consider that column a case attribute.

case_attributes = discover_case_attributes(
    event_log=event_log,
    log_ids=DEFAULT_CSV_IDS,
    confidence_threshold=0.9
)

To see a more detailed example of use, and the format of the output, you can check this test file.