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Linnaeus University

Academic institutioneurope · se
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Research library6linked papers
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Selected work

Representative Papers

Two-Step Occupation Coding

Jul 22, 2026

This work addresses the challenging task of mapping occupational titles from free-form text to standardized classification schemes, particularly under the adverse effects of OCR-induced noise. To tackle this problem, the authors propose a two-stage decoupled architecture: first, a domain-adapted named entity recognition (NER) model precisely extracts occupational titles, and second, these extracted titles are mapped to the target taxonomy. This separation enables each stage to focus on a single, well-defined objective, substantially improving accuracy, robustness, and interpretability. The study further introduces an innovative margin-based confidence criterion—replacing conventional absolute thresholds—to refine mapping decisions. Experiments on German-language documents demonstrate that the proposed approach significantly outperforms end-to-end single-step baselines and exhibits strong potential for cross-lingual transfer. The implementation code and evaluation scripts are publicly released to facilitate reproducibility.

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Fine-grained Computation-Communication Overlap via Tile-level Signaling and Scheduling for Mixture-of-Experts

Jul 21, 2026

This work addresses the performance bottleneck in Mixture-of-Experts (MoE) models during multi-GPU deployment, where serial execution of expert computation and all-to-all communication exposes communication latency on the critical path, limiting GPU utilization. The authors propose a producer-consumer co-design that employs block-level scheduling: persistent compute kernels prioritize processing remote critical blocks, while dedicated streaming multiprocessor (SM) partitions run persistent communication kernels that initiate fine-grained communication based on block readiness. This enables efficient overlap between computation and return-phase communication without modifying underlying operators or communication primitives. Evaluated on a 4×A100 platform, the approach achieves up to 2.74× speedup for MoE layers and 2.64× end-to-end acceleration, demonstrating consistent performance gains and correctness across diverse GEMM shapes and routing strategies.

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Latent-Variable Learning of SPDEs via Wiener Chaos

Feb 12, 2026

This work proposes a novel method for learning the statistical structure of linear stochastic partial differential equations (SPDEs) with additive Gaussian noise directly from spatiotemporal observational data, without requiring prior knowledge of the driving noise or initial conditions. By integrating spectral Galerkin projection with truncated Wiener chaos expansion, the SPDE is reduced to a finite-dimensional parametric system of ordinary differential equations. A structured latent variable model is introduced, enabling joint estimation of latent states and stochastic forcing terms through variational inference. This approach achieves, for the first time, end-to-end learning of the stochastic structure of SPDEs and theoretically disentangles deterministic dynamics from stochastic forcing. It attains state-of-the-art performance on synthetic data across both bounded and unbounded one-dimensional spatial domains, accurately recovering the underlying stochastic dynamical structure of the SPDEs.

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From Lab to Factory: Pitfalls and Guidelines for Self-/Unsupervised Defect Detection on Low-Quality Industrial Images

Jun 20, 2025

Industrial metal sandblasted forgings often exhibit minute surface defects, yet existing unsupervised defect detection methods suffer from poor robustness and distorted evaluation under low-quality RGB images prevalent in real production lines. Method: This paper proposes the first unsupervised defect detection and diagnostic framework tailored to authentic industrial scenarios. It systematically analyzes the data–model coupling failure mechanism, exposing intrinsic limitations of likelihood-based approaches on degraded imagery; introduces perturbation-robustness testing, invariance diagnostics, and empirical AUROC limitation analysis to establish a more reliable empirical risk assessment paradigm; and conducts comparative validation using representative reconstruction-based (e.g., VAE) and embedding-based (e.g., PatchCore) models. Contribution/Results: The framework delivers reusable diagnostic guidelines and actionable improvement pathways, significantly enhancing defect localization reliability and deployment stability on real-world production-line data.

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Recent publications

Latest Papers

Two-Step Occupation Coding

Jul 22, 2026

This work addresses the challenging task of mapping occupational titles from free-form text to standardized classification schemes, particularly under the adverse effects of OCR-induced noise. To tackle this problem, the authors propose a two-stage decoupled architecture: first, a domain-adapted named entity recognition (NER) model precisely extracts occupational titles, and second, these extracted titles are mapped to the target taxonomy. This separation enables each stage to focus on a single, well-defined objective, substantially improving accuracy, robustness, and interpretability. The study further introduces an innovative margin-based confidence criterion—replacing conventional absolute thresholds—to refine mapping decisions. Experiments on German-language documents demonstrate that the proposed approach significantly outperforms end-to-end single-step baselines and exhibits strong potential for cross-lingual transfer. The implementation code and evaluation scripts are publicly released to facilitate reproducibility.

0 citationsRead paper

Fine-grained Computation-Communication Overlap via Tile-level Signaling and Scheduling for Mixture-of-Experts

Jul 21, 2026

This work addresses the performance bottleneck in Mixture-of-Experts (MoE) models during multi-GPU deployment, where serial execution of expert computation and all-to-all communication exposes communication latency on the critical path, limiting GPU utilization. The authors propose a producer-consumer co-design that employs block-level scheduling: persistent compute kernels prioritize processing remote critical blocks, while dedicated streaming multiprocessor (SM) partitions run persistent communication kernels that initiate fine-grained communication based on block readiness. This enables efficient overlap between computation and return-phase communication without modifying underlying operators or communication primitives. Evaluated on a 4×A100 platform, the approach achieves up to 2.74× speedup for MoE layers and 2.64× end-to-end acceleration, demonstrating consistent performance gains and correctness across diverse GEMM shapes and routing strategies.

0 citationsRead paper

Latent-Variable Learning of SPDEs via Wiener Chaos

Feb 12, 2026

This work proposes a novel method for learning the statistical structure of linear stochastic partial differential equations (SPDEs) with additive Gaussian noise directly from spatiotemporal observational data, without requiring prior knowledge of the driving noise or initial conditions. By integrating spectral Galerkin projection with truncated Wiener chaos expansion, the SPDE is reduced to a finite-dimensional parametric system of ordinary differential equations. A structured latent variable model is introduced, enabling joint estimation of latent states and stochastic forcing terms through variational inference. This approach achieves, for the first time, end-to-end learning of the stochastic structure of SPDEs and theoretically disentangles deterministic dynamics from stochastic forcing. It attains state-of-the-art performance on synthetic data across both bounded and unbounded one-dimensional spatial domains, accurately recovering the underlying stochastic dynamical structure of the SPDEs.

0 citationsRead paper

From Lab to Factory: Pitfalls and Guidelines for Self-/Unsupervised Defect Detection on Low-Quality Industrial Images

Jun 20, 2025

Industrial metal sandblasted forgings often exhibit minute surface defects, yet existing unsupervised defect detection methods suffer from poor robustness and distorted evaluation under low-quality RGB images prevalent in real production lines. Method: This paper proposes the first unsupervised defect detection and diagnostic framework tailored to authentic industrial scenarios. It systematically analyzes the data–model coupling failure mechanism, exposing intrinsic limitations of likelihood-based approaches on degraded imagery; introduces perturbation-robustness testing, invariance diagnostics, and empirical AUROC limitation analysis to establish a more reliable empirical risk assessment paradigm; and conducts comparative validation using representative reconstruction-based (e.g., VAE) and embedding-based (e.g., PatchCore) models. Contribution/Results: The framework delivers reusable diagnostic guidelines and actionable improvement pathways, significantly enhancing defect localization reliability and deployment stability on real-world production-line data.

0 citationsRead paper