通过软标签融合多组学数据,提升鼻咽癌放疗后远处转移预测准确率
Multi-Omics Fusion with Soft Labeling for Enhanced Prediction of Distant Metastasis in Nasopharyngeal Carcinoma Patients after Radiotherapy
- 采用多核晚期融合结合软标签机制,缓解组学数据差异影响
- 在NPC-ContraParotid数据集上预测性能显著优于传统方法
- 适用于复杂癌症数据建模,尤其适合临床预后预测场景
组学数据融合已成为医学图像处理中的关键预处理方法,有助于提升多种研究的效能。然而,不同数据来源与医学影像设备间的差异带来了不确定性,阻碍了组学数据的有效整合。为克服这一挑战,本研究提出一种新型融合方法,旨在降低组学数据内在差异的影响。多核晚期融合方法因其在高维空间中有效映射特征的能力而广受青睐。传统方法受限于标签拟合僵化,在复杂鼻咽癌(NPC)数据集上表现不佳,难以应对高维特征。为此,本文引入软标签策略,增强两组间差异区分度,提供更灵活的标签分配结构。实验基于NPC-ContraParotid数据集验证了模型的稳健性与有效性,表明其在预测鼻咽癌患者放疗后远处转移方面具有重要应用潜力。
原文摘要 · Abstract (English)
Omics fusion has emerged as a crucial preprocessing approach in the field of medical image processing, providing significant assistance to several studies. One of the challenges encountered in the integration of omics data is the presence of unpredictability arising from disparities in data sources and medical imaging equipment. In order to overcome this challenge and facilitate the integration of their joint application to specific medical objectives, this study aims to develop a fusion methodology that mitigates the disparities inherent in omics data. The utilization of the multi-kernel late-fusion method has gained significant popularity as an effective strategy for addressing this particular challenge. An efficient representation of the data may be achieved by utilizing a suitable single-kernel function to map the inherent features and afterward merging them in a space with a high number of dimensions. This approach effectively addresses the differences noted before. The inflexibility of label fitting poses a constraint on the use of multi-kernel late-fusion methods in complex nasopharyngeal carcinoma (NPC) datasets, hence affecting the efficacy of general classifiers in dealing with high-dimensional characteristics. This innovative methodology aims to increase the disparity between the two cohorts, hence providing a more flexible structure for the allocation of labels. The examination of the NPC-ContraParotid dataset demonstrates the model's robustness and efficacy, indicating its potential as a valuable tool for predicting distant metastases in patients with nasopharyngeal carcinoma (NPC).
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