arXiv subjects

Shang Huang

Publications and source records attributed to Shang Huang.

3 recordsLinked to original sources

arXiv2026

Full end-to-end diagnostic workflow automation of 3D OCT via foundation model-driven AI for retinal diseases

Optical coherence tomography (OCT) has revolutionized retinal disease diagnosis with its high-resolution and three-dimensional imaging nature, yet its full diagnostic automation in clinical practices remains constrained by multi-stage workflows and conventional single-slice single-task AI models. We present Full-process OCT-based Clinical Utility System (FOCUS), a foundation model-driven framework enabling end-to-end automation of 3D OCT retinal disease diagnosis. FOCUS sequentially performs image quality assessment with EfficientNetV2-S, followed by abnormality detection and multi-disease classification using a fine-tuned Vision Foundation Model. Crucially, FOCUS leverages a unified adaptive aggregation method to intelligently integrate 2D slices-level predictions into comprehensive 3D patient-level diagnosis. Trained and tested on 3,300 patients (40,672 slices), and externally validated on 1,345 patients (18,498 slices) across four different-tier centers and diverse OCT devices, FOCUS achieved high F1 scores for quality assessment (99.01%), abnormally detection (97.46%), and patient-level diagnosis (94.39%). Real-world validation across centers also showed stable performance (F1: 90.22%-95.24%). In human-machine comparisons, FOCUS matched expert performance in abnormality detection (F1: 95.47% vs 90.91%) and multi-disease diagnosis (F1: 93.49% vs 91.35%), while demonstrating better efficiency. FOCUS automates the image-to-diagnosis pipeline, representing a critical advance towards unmanned ophthalmology with a validated blueprint for autonomous screening to enhance population scale retinal care accessibility and efficiency.

cs.CV↗

arXiv2024

Quantum Sparse Coding and Decoding Based on Quantum Network

Sparse coding provides a versatile framework for efficiently capturing and representing crucial data (information) concisely, which plays an essential role in various computer science fields, including data compression, feature extraction, and general signal processing. In this study, we propose a symmetric quantum neural network for realizing sparse coding and decoding algorithms. Our networks consist of multi-layer, two-level unitary transformations that are naturally suited for optical circuits. Each gate is described by two real parameters, corresponding to reflectivity and phase shift. Specifically, the two networks can be efficiently trained together or separately using a quantum natural gradient descent algorithm, either simultaneously or independently. Utilizing the trained model, we achieve sparse coding and decoding of binary and grayscale images in classical problems, as well as that of complex quantum states in quantum problems separately. The results demonstrate an accuracy of 98.77\% for image reconstruction and a fidelity of 97.68\% for quantum state revivification. Our quantum sparse coding and decoding model offers improved generalization and robustness compared to the classical model, laying the groundwork for widespread practical applications in the emerging quantum era.

quant-ph↗

arXiv2017

Noether's Problem on Semidirect Product Groups

Let $K$ be a field, $G$ a finite group. Let $G$ act on the function field $L = K(x_σ : σ\in G)$ by $τ\cdot x_σ = x_{τσ}$ for any $σ, τ\in G$. Denote the fixed field of the action by $K(G) = L^{G} = \left\{ \frac{f}{g} \in L : σ(\frac{f}{g}) = \frac{f}{g}, \forall σ\in G \right\}$. Noether's problem asks whether $K(G)$ is rational (purely transcendental) over $K$. It is known that if $G = C_m \rtimes C_n$ is a semidirect product of cyclic groups $C_m$ and $C_n$ with $\mathbb{Z}[ζ_n]$ a unique factorization domain, and $K$ contains an $e$th primitive root of unity, where $e$ is the exponent of $G$, then $K(G)$ is rational over $K$. In this paper, we give another criteria to determine whether $K(C_m \rtimes C_n)$ is rational over $K$. In particular, if $p, q$ are prime numbers and there exists $x \in \mathbb{Z}[ζ_q]$ such that the norm $N_{\mathbb{Q}(ζ_q)/\mathbb{Q}}(x) = p$, then $\mathbb{C}(C_{p} \rtimes C_{q})$ is rational over $\mathbb{C}$.

math.AC↗