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Cost-Sensitive Decision Support for Industrial Batch Processes
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.
Kanthal AB, S-73427 Hallstahammar, Sweden..
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.ORCID iD: 0000-0002-8466-356X
2023 (English)In: Sensors, E-ISSN 1424-8220, Vol. 23, no 23, article id 9464Article in journal (Refereed) Published
Abstract [en]

In this work, cost-sensitive decision support was developed. Using Batch Data Analytics (BDA) methods of the batch data structure and feature accommodation, the batch process property and sensor data can be accommodated. The batch data structure organises the batch processes' data, and the feature accommodation approach derives statistics from the time series, consequently aligning the time series with the other features. Three machine learning classifiers were implemented for comparison: Logistic Regression (LR), Random Forest Classifier (RFC), and Support Vector Machine (SVM). It is possible to filter out the low-probability predictions by leveraging the classifiers' probability estimations. Consequently, the decision support has a trade-off between accuracy and coverage. Cost-sensitive learning was used to implement a cost matrix, which further aggregates the accuracy-coverage trade into cost metrics. Also, two scenarios were implemented for accommodating out-of-coverage batches. The batch is discarded in one scenario, and the other is processed. The Random Forest classifier was shown to outperform the other classifiers and, compared to the baseline scenario, had a relative cost of 26%. This synergy of methods provides cost-aware decision support for analysing the intricate workings of a multiprocess batch data system.

Place, publisher, year, edition, pages
MDPI , 2023. Vol. 23, no 23, article id 9464
Keywords [en]
Batch Data Analytics (BDA), feature-oriented, cost-sensitive learning, decision support, machine learning
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-65129DOI: 10.3390/s23239464ISI: 001115971100001PubMedID: 38067837Scopus ID: 2-s2.0-85179140167OAI: oai:DiVA.org:mdh-65129DiVA, id: diva2:1821379
Available from: 2023-12-20 Created: 2023-12-20 Last updated: 2024-06-05Bibliographically approved
In thesis
1. Cost-Conscious Analytics and Decision Support for Industrial Batch Processes
Open this publication in new window or tab >>Cost-Conscious Analytics and Decision Support for Industrial Batch Processes
2024 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The iron and steel industry is compelled to innovate for survival amid escalating market competition, regulatory stringency, and elevated customer expectations. Significantly, the industry’s 7.2% contribution to global greenhouse gas emissions necessitates a sustainable and efficient approach. Central to this transformation is the adoption of advanced analytics, facilitated by leaps in computational technology, allowing real-time analysis of vast data sets and enabling valuable operational insights.

This study investigates the steel industry as a case study for legacy industries’ technology adoption, focusing on the integral role of Batch Data Analytics (BDA), Machine Learning (ML), and Cost-Sensitive Learning (CSL) as methodological cornerstones. BDA, through consolidation of batch processes, supports more efficient industrial operations. As a primary tool for extracting process data insights, ML fosters the develop-ment of focused datasets, while by connecting performance indicators to cost-oriented properties, CSL encourages a value-centric approach.

Legacy industries, including the iron and steel industry, present unique challenges in adapting to disruptive technologies, yet successful navigation provides abundant opportunities for innovation and growth. The introduction and assimilation of advanced analytics and disruptive technologies within established business models and processes are pivotal for these industries’ survival and growth. Given its significant economic role and continued reliance on fossil fuels, the steel industry exemplifies these challenges and opportunities.

The thesis details practical, real-world applications of these concepts, utilising case studies from Kanthal’s factory in Hallstahammar. These case studies highlight how advanced analytics can be applied to optimise processes, reduce costs, and improve productivity in actual industrial operations. They underscore the importance of contextualised data in batch processing settings and the need for improved data connectivity and interoperability.

Including intuitive and value-aligned Key Performance Indicators (KPIs), this research underscores the significance of a value-centric approach facilitated by CSL. The selected KPIs should accurately capture the processes’ value under investigation, aligning research objectives with the organisation’s operational goals.

Place, publisher, year, edition, pages
Eskilstuna: Mälardalens universitet, 2024
Series
Mälardalen University Press Licentiate Theses, ISSN 1651-9256 ; 362
National Category
Energy Systems
Research subject
Energy- and Environmental Engineering
Identifiers
urn:nbn:se:mdh:diva-67178 (URN)978-91-7485-655-2 (ISBN)
Presentation
2024-10-03, Gamma, Mälardalens universitet, Västerås, 09:15 (English)
Opponent
Supervisors
Available from: 2024-06-05 Created: 2024-06-05 Last updated: 2024-09-12Bibliographically approved

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Mählkvist, SimonKyprianidis, Konstantinos

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