arXiv Machine Learning By Kristoffer Hjelmen Nesland (University of Stavanger, Stavanger, Norway, Solution Seeker AS, Oslo, Norway), Bjarne Grimstad (Solution Seeker AS, Oslo, Norway), Antorweep Chakravorty (University of Stavanger, Stavanger, Norway), Dan Sui (University of Stavanger, Stavanger, Norway)

Text-Informed Training Data Filtering for Enhanced Virtual Flow Meter Performance

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The paper introduces a text-informed training data filtering approach that uses large language models to combine unstructured operational text with tabular sensor data for anomaly detection and dataset masking. Applied to a virtual flow meter for oil and gas, the multimodal method reduces mean absolute percentage error from 7.1% to 5.4% compared to sensor-only filtering. Ablation studies confirm that operator comments provide additional filtering signals beyond sensor data alone.

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