一个封闭的多跳转注意力融合网络,用于提取跨语义的不良药物事件关系
Ed-Drissiya El-Allaly1, Ali Oubelkacem1, Hamid Bourray1
1Computer Science Department, Faculty of Sciences, Moulay Ismail University, Zitoune, B.P. 11201 Meknes, Morocco.
Journal of healthcare informatics research
|February 9, 2026
概括
本研究介绍了GMAFNet,这是一种新的深度学习模型,可以有效地从文本中提取不良药物事件 (ADE) 关系. GMAFNet实现了高准确度,超过了现有的药监监测方法.
科学领域:
- 药监和药物安全 药监和药物安全
- 生物医学自然语言处理
- 机器学习用于医疗保健
背景情况:
- 药物不良事件 (ADE) 实体之间的句间关系的自动提取对于药物监测至关重要.
- 当前的深度学习模型面临的挑战是同时利用实体,句子和文档级信息来实现高效的表示学习.
- 相关实体对与预定义关系的稀疏性对模型培训构成重大问题.
研究的目的:
- 提出一个新的门式多跳转注意力融合网络 (GMAFNet),以更好地提取句间ADE关系.
- 解决代表性学习现有方法的局限性和稀疏性问题.
- 提高从非结构化文档中提取ADE关系的效率和准确性.
主要方法:
- 在三个层面进行特征提取:实体层面 (适应性本地化上下文聚合),句子层面 (细心的层次上下文聚合) 和文档层面 (细心的全球-本地聚合上下文聚合).
- 使用一种新的门式多跳注意力机制,将提取的特征融合在一起.
- 应用一个不对称的焦点损失函数来缓解数据稀疏的问题.
主要成果:
- 在n2c2 2018挑战基准数据集中,GMAFNet获得了97.27%的优异F1得分.
- 该模型表现出强大的通用性,在CDR数据集上达到78.19%的F1得分,在GDA数据集上达到87.10%.
- 在提取复杂的句际ADE关系方面,GMAFNet的性能超过了最先进的系统.
结论:
- 拟议的GMAFNet系统对于提取句间ADE关系非常有效.
- 多级特征融合和不对称的焦点损失对模型的性能做出了重大贡献.
- GMAFNet在自动化药物监测和药物安全分析方面取得了重大进展.
相关概念视频
Nuclear Fusion
33.9K
The process of converting very light nuclei into heavier nuclei is also accompanied by the conversion of mass into large amounts of energy, a process called fusion. The principal source of energy in the sun is a net fusion reaction in which four hydrogen nuclei fuse and ultimately produce one helium nucleus and two positrons.
A helium nucleus has a mass that is 0.7% less than that of four hydrogen nuclei; this lost mass is converted into energy during the fusion. This reaction produces about...
A helium nucleus has a mass that is 0.7% less than that of four hydrogen nuclei; this lost mass is converted into energy during the fusion. This reaction produces about...
33.9K
Protein Networks
4.6K
An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
4.6K
Underflow Gates
420
Underflow gates are vital for controlling water flow in irrigation canals. The three main types of underflow gates — vertical, radial, and drum gates — serve different purposes while ensuring effective flow management. Vertical gates move up and down, generating a free-flowing water jet; radial gates pivot to regulate the flow; and drum gates rotate for precise adjustments. The flow through these gates is influenced by downstream conditions, resulting in free or drowned outflow.Free and...
420
Network Covalent Solids
16.2K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
16.2K
Ligand-Gated Ion Channel Receptor: Gating Mechanism
4.1K
Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
4.1K
Local Anesthetics: Adverse Effects
815
While local anesthetics are generally safe and well-tolerated, they can occasionally cause adverse effects that vary in severity. Local anesthetics can induce toxicity at two distinct levels. They can either produce local effects through direct contact with the neural elements or be absorbed into the bloodstream from the injection site, leading to systemic effects.
Once absorbed into the systemic circulation, local anesthetics can affect the organs that depend on the functioning of sodium...
Once absorbed into the systemic circulation, local anesthetics can affect the organs that depend on the functioning of sodium...
815


