A cluster-based competitive particle swarm optimizer with a sparse truncation operator for multi-objective optimization

X Wang, B Zhang, J Wang, K Zhang, Y Jin - Swarm and Evolutionary …, 2022 - Elsevier
Many different types of multi-objective optimization problems, eg multi-modal problems and
large-scale problems, have been solved with high performance by numbers of tailored multi …

Multi-objective optimization of methanol production for energy efficiency and environmental sustainability

AK Wolday, AM Gujarathi, M Ramteke - Computers & Chemical …, 2023 - Elsevier
In this study, a syngas-to-methanol synthesis plant is modeled using Aspen Plus and
optimized using MATLAB-NSGA-II algorithm to simultaneously minimize total annual gas …

Fault detection and isolation using probabilistic wavelet neural operator auto-encoder with application to dynamic processes

J Rani, T Tripura, H Kodamana, S Chakraborty… - Process Safety and …, 2023 - Elsevier
Fault detection and isolation are crucial aspects that need to be considered for the safe and
reliable operation of process systems. The modern industrial process frequently employs …

Fault detection and isolation of multi-variate time series data using spectral weighted graph auto-encoders

U Goswami, J Rani, H Kodamana, S Kumar… - Journal of the Franklin …, 2023 - Elsevier
Fault or anomaly detection is one of the key problems faced by the chemical process
industry for achieving safe and reliable operation. In this study, a novel methodology …

[HTML][HTML] A graph embedding based fault detection framework for process systems with multi-variate time-series datasets

U Goswami, J Rani, H Kodamana, PK Tamboli… - Digital Chemical …, 2024 - Elsevier
Due to the enormous potential of modelling, graph-based approaches have been used for
various applications in the process industries. In this study, we propose a fault detection …

Optimisation of methanol distillation using GA and neural network hybrid

AK Wolday, M Ramteke - Materials and Manufacturing Processes, 2023 - Taylor & Francis
Distillation is an energy-intensive non-stationary process represented using non-linear
model equations and involves multiple objectives. For such processes, data-based multi …

Scale abbreviation with recursive feature elimination and genetic algorithms: An illustration with the test emotions questionnaire

S Kilmen, O Bulut - Information, 2023 - mdpi.com
Psychological scales play a key role in the assessment, screening, and diagnosis of latent
variables, such as emotions, mental health, and well-being. In practice, researchers need …

Surrogate model-based optimization of methanol synthesis process for multiple objectives: A pathway towards achieving sustainable development goals

AK Wolday, M Ramteke - Chemical Engineering Research and Design, 2024 - Elsevier
This work combines a generalized regression neural network (GRNN) with a non-dominated
sorting genetic algorithm (NSGA-II) to optimize a methanol synthesis plant for multiple …

Reconstruction error‐based fault detection of time series process data using generative adversarial auto‐encoders

J Rani, U Goswami, H Kodamana… - The Canadian Journal …, 2023 - Wiley Online Library
Faults in time series process data are typically difficult to detect due to the complex temporal
correlations of data samples. In this context, traditional unsupervised machine learning …

Fault detection using Graph Neural Differential Auto-encoders (GNDAE)

U Goswami, H Kodamana, M Ramteke - Computers & Chemical …, 2024 - Elsevier
In this study, we propose a Graph neural Differential Auto-encoder (GNDAE) model for fault
detection and process monitoring. The GNDAE framework is capable of dealing with graph …