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CHRONOPROF: Profiling Time Series Forecasters and Classifiers in Mobile Networks with Explainable AI

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xai-chronoprof-wowmom-dspace.pdf (1.807Mb)
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URI: https://hdl.handle.net/20.500.12761/1918
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Author(s)
Fernández, Pablo; Bravo Aramburu, Iñaki; Kamath, Anirudh; Fiandrino, Claudio; Widmer, Joerg
Date
2025-05
Abstract
The next-generation of mobile networks will increasingly rely on Artificial Intelligence (AI)/Machine Learning (ML) for effective network automation, resource orchestration and management. This translates into performing classification and regression tasks on time series data. Unfortunately, the existing AI/ML models are inherently complex and hard to interpret, which hinders their deployment in production networks. Further, the vast majority of the existing EXplainable Artificial Intelligence (XAI) techniques are either primarily conceived for computer vision and natural language processing and thus fail to provide useful insights. In this paper, we take the research on XAI for time series classification and regression tasks one step further proposing ChronoProf, a new tool that builds on legacy XAI techniques. By creating a linearized version of the original model for different observations, ChronoProf provides insights about the dynamic changes in the model decision-making process across observations and is agnostic to the influence of feature magnitude, which is a key limitation of legacy explainers. Thus, ChronoProf highlights the real influence of model parameters on the output. Our extensive evaluation with real-world mobile traffic traces shows that ChronoProf is able to measure the feature importance, especially in classification tasks where linearized explanations across observations show high consistency.
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Files
xai-chronoprof-wowmom-dspace.pdf (1.807Mb)
Identifiers
URI: https://hdl.handle.net/20.500.12761/1918
Metadata
Show full item record

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