169 research outputs found
Exploiting Event Log Event Attributes in RNN Based Prediction
In predictive process analytics, current and historical process data in event logs are used to predict future. E.g., to predict the next activity or how long a process will still require to complete. Recurrent neural networks (RNN) and its subclasses have been demonstrated to be well suited for creating prediction models. Thus far, event attributes have not been fully utilized in these models. The biggest challenge in exploiting them in prediction models is the potentially large amount of event attributes and attribute values. We present a novel clustering technique which allows for trade-offs between prediction accuracy and the time needed for model training and prediction. As an additional finding, we also find that this clustering method combined with having raw event attribute values in some cases provides even better prediction accuracy at the cost of additional time required for training and prediction.Peer reviewe
Modeling of IoT devices in Business Processes: A Systematic Mapping Study
[EN] The Internet of Things (IoT) enables to connect the physical world to digital business processes (BP). By using the IoT, a BP can, e.g.: 1) take into account real-world data to take more informed business decisions, and 2) automate and/or improve BP tasks. To achieve these benefits, the integration of IoT and BPs needs to be successful. The first step to this end is to support the modeling of IoT-enhanced BPs. Although numerous researchers have studied this subject, it is unclear what is the current state of the art in terms of current modeling solutions and gaps. In this work, we carry out a Systematic Mapping Study (SMS) to find out how current solutions are modelling IoT into business processes. After studying 600 papers, we identified and analyzed in depth a total of 36 different solutions. In addition, we report on some important issues that should be addressed in the near future, such as, for instance the lack of standardization.This research has been funded by Internal Funds KU Leuven (Interne
Fondsen KU Leuven) and the financial support of the Spanish State Research
Agency under the project TIN2017-84094-R and co-financed with ERDF.Torres Bosch, MV.; Serral, E.; Valderas, P.; Pelechano Ferragud, V.; Grefen, P. (2020). Modeling of IoT devices in Business Processes: A Systematic Mapping Study. IEEE. 221-230. https://doi.org/10.1109/CBI49978.2020.00031S22123
DMN for Data Quality Measurement and Assessment
Data Quality assessment is aimed at evaluating the suitability
of a dataset for an intended task. The extensive literature on data
quality describes the various methodologies for assessing data quality
by means of data profiling techniques of the whole datasets. Our investigations
are aimed to provide solutions to the need of automatically
assessing the level of quality of the records of a dataset, where data profiling
tools do not provide an adequate level of information. As most of
the times, it is easier to describe when a record has quality enough than
calculating a qualitative indicator, we propose a semi-automatically business
rule-guided data quality assessment methodology for every record.
This involves first listing the business rules that describe the data (data
requirements), then those describing how to produce measures (business
rules for data quality measurements), and finally, those defining how to
assess the level of data quality of a data set (business rules for data quality
assessment). The main contribution of this paper is the adoption of
the OMG standard DMN (Decision Model and Notation) to support the
data quality requirement description and their automatic assessment by
using the existing DMN engines.Ministerio de Ciencia y Tecnología RTI2018-094283-B-C33Ministerio de Ciencia y Tecnología RTI2018-094283-B-C31European Regional Development Fund SBPLY/17/180501/00029
Explain, Adapt and Retrain: How to improve the accuracy of a PPM classifier through different explanation styles
Recent papers have introduced a novel approach to explain why a Predictive
Process Monitoring (PPM) model for outcome-oriented predictions provides wrong
predictions. Moreover, they have shown how to exploit the explanations,
obtained using state-of-the art post-hoc explainers, to identify the most
common features that induce a predictor to make mistakes in a semi-automated
way, and, in turn, to reduce the impact of those features and increase the
accuracy of the predictive model. This work starts from the assumption that
frequent control flow patterns in event logs may represent important features
that characterize, and therefore explain, a certain prediction. Therefore, in
this paper, we (i) employ a novel encoding able to leverage DECLARE constraints
in Predictive Process Monitoring and compare the effectiveness of this encoding
with Predictive Process Monitoring state-of-the art encodings, in particular
for the task of outcome-oriented predictions; (ii) introduce a completely
automated pipeline for the identification of the most common features inducing
a predictor to make mistakes; and (iii) show the effectiveness of the proposed
pipeline in increasing the accuracy of the predictive model by validating it on
different real-life datasets
OC-PM: Analyzing Object-Centric Event Logs and Process Models
Object-centric process mining is a novel branch of process mining that aims
to analyze event data from mainstream information systems (such as SAP) more
naturally, without being forced to form mutually exclusive groups of events
with the specification of a case notion. The development of object-centric
process mining is related to exploiting object-centric event logs, which
includes exploring and filtering the behavior contained in the logs and
constructing process models which can encode the behavior of different classes
of objects and their interactions (which can be discovered from object-centric
event logs). This paper aims to provide a broad look at the exploration and
processing of object-centric event logs to discover information related to the
lifecycle of the different objects composing the event log. Also, comprehensive
tool support (OC-PM) implementing the proposed techniques is described in the
paper
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