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Journal of Zhejiang University SCIENCE B

ISSN 1673-1581(Print), 1862-1783(Online), Monthly

Development and application of bionic systems consisting of tumor-cell membranes

Abstract: Malignant tumors pose a serious threat to human health but during the past decade, great progress has been made in the treatment of tumors. The tumor-cell membrane is well constructed and can be used to solve problems in tumor therapy. Tumor-cell membranes exhibit not only high biocompatibility due to their homology but also enhanced therapeutic effects when combined with nanotechnology. Meanwhile, nanomaterials show high selectivity, sensitivity, and clinical transformation potential. Enhanced immunotherapy or tumor vaccines have potential clinical application because of tumor-membrane surface-specific antigens. Several studies have confirmed the feasibility and advantages of using tumor-cell membrane-incorporated nanosystems for tumor therapy. Considering all this, we focus in this review on the application of tumor-cell-membrane bionic platforms and, in the summary, provide ideas for new scientific developments.

Key words: Tumor cell membrane?Nanomedicine?Biomimetic nanoparticle; Drug delivery; Targeted therapy

Chinese Summary  <26> 复杂完整性约束:在现代智能交通系统中衡量模型可信性

作者:胡文涛,江大伟,伍赛,陈珂,陈刚
机构:浙江大学,浙江省大数据智能计算重点实验室,中国杭州,310027
目的:由于使用的列车运行数据偏离系统应用的数据特征,现代智能交通系统部署的模型推理结果可能不可靠。本文旨在研究部署在系统中的模型使用的数据变化对模型性能的影响,通过研究衡量模型可信性方法,实现在现实场景中无需标注数据实时检测部署在系统中的模型可信性。
创新点:1.提出一种复杂完整性约束概念,在无标注数据的情况下,衡量模型使用数据的不安全程度。2.为实现现代智能交通系统实时检测模型的可信性,我们设计一种新颖的算法,利用位向量索引技术和规则推理系统,快速发现模型应用数据的复杂完整性约束。
方法:1.通过输入部署在现代智能交通系统模型中的训练数据,系统构建面向输入数据的索引向量从而避免对大规模数据进行多次。2.通过规则推理系统和支持度剪枝技术,将语意重复的冗余约束和一些无意义的约束忽略,得到有效的复杂完整性约束。3.利用完整性约束计算违反约束的数据在数据集中的比例从而衡量模型使用的数据不安全程度。4.通过使用真实的列车运行数据集测试,分析复杂完整性约束衡量的数据不安全程度和模型性能的关系,从而验证复杂完整性约束的可行性和有效性。
结论:1.模型使用的数据偏离模型训练数据特征会影响模型的性能。2.通过发现复杂完整性约束,衡量模型使用的数据不安全程度,可以快速检测部署的模型可信性。3.通过对模型可信性的研究,可以无需标注而快速发现不可信的模型,从而及时重新部署可信模型,提升现代智能交通系统的稳定性。

关键词组:现代智能交通系统;列车运行控制;约束发现;可信机器学习


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DOI:

10.1631/jzus.B2200156

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On-line Access:

2022-06-16

Received:

2022-03-28

Revision Accepted:

2022-05-19

Crosschecked:

2022-09-16

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