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2024-04-22 07:14:34

A Hybrid Process for Integration of Organic Electrochemical Transistors for High Uniformity & Reliability
Tommy Meier, Yeohoon Yoon, Laura Teuerle, Ali Solgi, Karl Leo, Hans Kleemann
2024-06-13 07:22:29

Interlinking User Stories and GUI Prototyping: A Semi-Automatic LLM-based Approach
Kristian Kolthoff, Felix Kretzer, Christian Bartelt, Alexander Maedche, Simone Paolo Ponzetto
2024-06-12 06:59:48

Exploring Waveform Variations among Neutron Star Ray-tracing Codes for Complex Emission Geometries
Devarshi Choudhury, Anna L. Watts, Alexander J. Dittmann, M. Coleman Miller, Sharon M. Morsink, Tuomo Salmi, Serena Vinciguerra, Slavko Bogdanov, Sebastien Guillot, Michael T. Wolff, Zaven Arzoumanian…
2024-06-17 03:55:57

🔊 #NowPlaying on KEXP's #SundaySoul
Ray Alexander Technique:
🎵 Save Me
2024-04-30 07:34:40

Self-supervised learning for classifying paranasal anomalies in the maxillary sinus
Debayan Bhattacharya, Finn Behrendt, Benjamin Tobias Becker, Lennart Maack, Dirk Beyersdorff, Elina Petersen, Marvin Petersen, Bastian Cheng, Dennis Eggert, Christian Betz, Anna Sophie Hoffmann, Alexander Schlaefer
arXiv:2404.18599v1 Announce Type: new
Abstract: Purpose: Paranasal anomalies, frequently identified in routine radiological screenings, exhibit diverse morphological characteristics. Due to the diversity of anomalies, supervised learning methods require large labelled dataset exhibiting diverse anomaly morphology. Self-supervised learning (SSL) can be used to learn representations from unlabelled data. However, there are no SSL methods designed for the downstream task of classifying paranasal anomalies in the maxillary sinus (MS).
Methods: Our approach uses a 3D Convolutional Autoencoder (CAE) trained in an unsupervised anomaly detection (UAD) framework. Initially, we train the 3D CAE to reduce reconstruction errors when reconstructing normal maxillary sinus (MS) image. Then, this CAE is applied to an unlabelled dataset to generate coarse anomaly locations by creating residual MS images. Following this, a 3D Convolutional Neural Network (CNN) reconstructs these residual images, which forms our SSL task. Lastly, we fine-tune the encoder part of the 3D CNN on a labelled dataset of normal and anomalous MS images.
Results: The proposed SSL technique exhibits superior performance compared to existing generic self-supervised methods, especially in scenarios with limited annotated data. When trained on just 10% of the annotated dataset, our method achieves an Area Under the Precision-Recall Curve (AUPRC) of 0.79 for the downstream classification task. This performance surpasses other methods, with BYOL attaining an AUPRC of 0.75, SimSiam at 0.74, SimCLR at 0.73 and Masked Autoencoding using SparK at 0.75.
Conclusion: A self-supervised learning approach that inherently focuses on localizing paranasal anomalies proves to be advantageous, particularly when the subsequent task involves differentiating normal from anomalous maxillary sinuses. Access our code at
2024-06-04 07:16:37

Gapless superconductivity in the low-frequency electrodynamic response of two-dimensional granular In/InO$_x$ composites
Xinyang Zhang, Jinze Wu, Alexander Palevski, Aharon Kapitulnik