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A Multi-Source drug combination and Omnidirectional feature fusion approach for predicting Drug-Drug interaction events 多源药物联合和全方位特征融合预测药物-药物相互作用事件。
IF 4 2区 医学 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2025-02-01 DOI: 10.1016/j.jbi.2025.104772
Shiwei Gao, Jingjing Xie, Yizhao Zhao

Background

In the medical context where polypharmacy is increasingly common, accurately predicting drug-drug interactions (DDIs) is necessary for enhancing clinical medication safety and personalized treatment. Despite progress in identifying potential DDIs, a deep understanding of the underlying mechanisms of DDIs remains limited, constraining the rapid development and clinical application of new drugs.

Methods

This study introduces a novel multimodal drug-drug interaction (MMDDI) model based on multi-source drug data and comprehensive feature fusion techniques, aiming to improve the accuracy and depth of DDI prediction. We utilized the real-world DrugBank dataset, which contains rich drug information. Our task was to predict multiple interaction events between drug pairs and analyze the underlying mechanisms of these interactions. The MMDDI model achieves precise predictions through four key stages: feature extraction, drug pairing strategy, fusion network, and multi-source feature integration. We employed advanced data fusion techniques and machine learning algorithms for multidimensional analysis of drug features and interaction events.

Results

The MMDDI model was comprehensively evaluated on three representative prediction tasks. Experimental results demonstrated that the MMDDI model outperforms existing technologies in terms of predictive accuracy, generalization ability, and interpretability. Specifically, the MMDDI model achieved an accuracy of 93% on the test set, and the area under the AUC-ROC curve reached 0.9505, showing excellent predictive performance. Furthermore, the model’s interpretability analysis revealed the complex relationships between drug features and interaction mechanisms, providing new insights for clinical medication decisions.

Conclusion

The MMDDI model not only improves the accuracy of DDI prediction but also provides significant scientific support for clinical medication safety and drug development by deeply analyzing the mechanisms of drug interactions. These findings have the potential to improve patient medication outcomes and contribute to the development of personalized medicine.
背景:在多种用药日益普遍的医学背景下,准确预测药物相互作用(ddi)是提高临床用药安全性和个性化治疗的必要条件。尽管在识别潜在ddi方面取得了进展,但对ddi潜在机制的深入了解仍然有限,制约了新药的快速开发和临床应用。方法:引入基于多源药物数据和综合特征融合技术的新型多模态药物-药物相互作用(MMDDI)模型,提高DDI预测的准确性和深度。我们利用了真实世界的DrugBank数据集,其中包含丰富的药物信息。我们的任务是预测药物对之间的多重相互作用事件,并分析这些相互作用的潜在机制。MMDDI模型通过特征提取、药物配对策略、融合网络和多源特征集成四个关键阶段实现精确预测。我们采用先进的数据融合技术和机器学习算法对药物特征和相互作用事件进行多维分析。结果:MMDDI模型对三个代表性预测任务进行了综合评价。实验结果表明,MMDDI模型在预测精度、泛化能力和可解释性方面优于现有技术。其中,MMDDI模型在测试集上的准确率达到93%,AUC-ROC曲线下面积达到0.9505,具有优异的预测性能。此外,该模型的可解释性分析揭示了药物特征与相互作用机制之间的复杂关系,为临床用药决策提供了新的见解。结论:MMDDI模型不仅提高了DDI预测的准确性,而且通过深入分析药物相互作用机制,为临床用药安全和药物开发提供了重要的科学支持。这些发现有可能改善患者的用药效果,并有助于个性化医疗的发展。
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引用次数: 0
Valley-Forecast: Forecasting Coccidioidomycosis incidence via enhanced LSTM models trained on comprehensive meteorological data 山谷预报:利用综合气象数据训练的增强型LSTM模型预测球孢子菌病发病率。
IF 4 2区 医学 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2025-02-01 DOI: 10.1016/j.jbi.2025.104774
Leif Huender , Mary Everett , John Shovic
Coccidioidomycosis (cocci), or more commonly known as Valley Fever, is a fungal infection caused by Coccidioides species that poses a significant public health challenge, particularly in the semi-arid regions of the Americas, with notable prevalence in California and Arizona. Previous epidemiological studies have established a correlation between cocci incidence and regional weather patterns, indicating that climatic factors influence the fungus’s life cycle and subsequent disease transmission. This study hypothesizes that Long Short-Term Memory (LSTM) and extended Long Short-Term Memory (xLSTM) models, known for their ability to capture long-term dependencies in time-series data, can outperform traditional statistical methods in predicting cocci outbreak cases. Our research analyzed daily meteorological features from 2001 to 2022 across 48 counties in California, covering diverse microclimates and cocci incidence. The study evaluated 846 LSTM models and 176 xLSTM models with various fine-tuning metrics. To ensure the reliability of our results, these advanced neural network architectures are cross analyzed with Baseline Regression and Multi-Layer Perceptron (MLP) models, providing a comprehensive comparative framework. We found that LSTM-type architectures outperform traditional methods, with xLSTM achieving the lowest test RMSE of 282.98 (95% CI: 259.2-306.8) compared to the baseline’s 468.51 (95% CI: 458.2-478.8), demonstrating a reduction of 39.60% in prediction error. While both LSTM (283.50, 95% CI: 259.7-307.3) and MLP (293.14, 95% CI: 268.3-318.0) also showed substantial improvements over the baseline, the overlapping confidence intervals suggest similar predictive capabilities among the advanced models. This improvement in predictive capability suggests a strong correlation between temporal microclimatic variations and regional cocci incidences. The increased predictive power of these models has significant public health implications, potentially informing strategies for cocci outbreak prevention and control. Moreover, this study represents the first application of the novel xLSTM architecture in epidemiological research and pioneers the evaluation of modern machine learning methods’ accuracy in predicting cocci outbreaks. These findings contribute to the ongoing efforts to address cocci, offering a new approach to understanding and potentially mitigating the impact of the disease in affected regions.
球孢子菌病(cocci),或更常见的谷热,是一种由球孢子菌引起的真菌感染,对公共卫生构成重大挑战,特别是在美洲的半干旱地区,加利福尼亚州和亚利桑那州的流行率很高。以前的流行病学研究已经建立了球菌发病率与区域天气模式之间的相关性,表明气候因素影响真菌的生命周期和随后的疾病传播。该研究假设长短期记忆(LSTM)和扩展长短期记忆(xLSTM)模型在预测球菌爆发病例方面可以优于传统的统计方法,它们以能够捕获时间序列数据中的长期依赖关系而闻名。我们的研究分析了2001年至2022年加州48个县的日常气象特征,涵盖了不同的小气候和球菌发病率。该研究使用各种微调指标评估了846个LSTM模型和176个xLSTM模型。为了确保我们的结果的可靠性,这些先进的神经网络架构与基线回归和多层感知器(MLP)模型交叉分析,提供了一个全面的比较框架。我们发现lstm类型的架构优于传统方法,与基线的468.51 (95% CI: 458.2-478.8)相比,xLSTM实现了最低的测试RMSE 282.98 (95% CI: 259.2-306.8),表明预测误差减少了39.60%。虽然LSTM (283.50, 95% CI: 259.7-307.3)和MLP (293.14, 95% CI: 268.3-318.0)在基线上也显示出实质性的改进,但重叠的置信区间表明先进模型之间的预测能力相似。这种预测能力的提高表明,时间小气候变化与区域球菌发病率之间存在很强的相关性。这些模型预测能力的增强具有重要的公共卫生意义,可能为预防和控制球菌爆发的战略提供信息。此外,该研究代表了新颖的xLSTM架构在流行病学研究中的首次应用,并开创了现代机器学习方法在预测球菌爆发方面的准确性评估。这些发现有助于正在进行的应对球菌的努力,提供了一种新的方法来了解和可能减轻受影响地区的疾病影响。
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引用次数: 0
Analysis of longitudinal social media for monitoring symptoms during a pandemic 大流行期间监测症状的纵向社交媒体分析。
IF 4 2区 医学 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2025-02-01 DOI: 10.1016/j.jbi.2025.104778
Shixu Lin , Lucas Garay , Yining Hua , Zhijiang Guo , Wanxin Li , Minghui Li , Yujie Zhang , Xiaolin Xu , Jie Yang

Objective

Current studies leveraging social media data for disease monitoring face challenges like noisy colloquial language and insufficient tracking of user disease progression in longitudinal data settings. This study aims to develop a pipeline for collecting, cleaning, and analyzing large-scale longitudinal social media data for disease monitoring, with a focus on COVID-19 pandemic.

Materials and methods

This pipeline initiates by screening COVID-19 cases from tweets spanning February 1, 2020, to April 30, 2022. Longitudinal data is collected for each patient, two months before and three months after self-reporting. Symptoms are extracted using Name Entity Recognition (NER), followed by denoising with a combination of Graph Convolutional Network (GCN) and Bidirectional Encoder Representations from Transformers (BERT) model to retain only User-experienced Symptom Mentions (USM). Subsequently, symptoms are mapped to standardized medical concepts using the Unified Medical Language System (UMLS). Finally, this study conducts symptom pattern analysis and visualization to illustrate temporal changes in symptom prevalence and co-occurrence.

Results

This study identified 191,096 self-reported COVID-19-positive cases from COVID-19-related tweets and retrospectively collected 811,398,280 historical tweets, of which 2,120,964 contained symptoms information. After denoising, 39 % (832,287) of symptom-sharing tweets reflected user-experienced mentions. The trained USM model achieved an average F1 score of 0.927. Further analysis revealed a higher prevalence of upper respiratory tract symptoms during the Omicron period compared to the Delta and Wild-type periods. Additionally, there was a pronounced co-occurrence of lower respiratory tract and nervous system symptoms in the Wild-type strain and Delta variant.

Conclusion

This study established a robust framework for analyzing longitudinal social media data to monitor symptoms during a pandemic. By integrating denoising of user-experienced symptom mentions, our findings reveal the duration of different symptoms over time and by variant within a cohort of nearly 200,000 patients, providing critical insights into symptom trends that are often difficult to capture through traditional data source.
目的:目前利用社交媒体数据进行疾病监测的研究面临着诸如嘈杂的口语和在纵向数据设置中对用户疾病进展的跟踪不足等挑战。本研究旨在开发一种用于疾病监测的大规模纵向社交媒体数据收集、清理和分析的管道,重点是COVID-19大流行。材料和方法:该管道通过筛选2020年2月1日至2022年4月30日期间的推文中的COVID-19病例启动。每位患者在自我报告前两个月和报告后三个月进行纵向数据收集。使用名称实体识别(NER)提取症状,然后结合图卷积网络(GCN)和变压器(BERT)模型的双向编码器表示进行降噪,以仅保留用户症状提及(USM)。随后,使用统一医学语言系统(UMLS)将症状映射到标准化的医学概念。最后,本研究通过症状模式分析和可视化来说明症状患病率和共现率的时间变化。结果:本研究从与covid -19相关的推文中发现191,096例自我报告的covid -19阳性病例,回顾性收集了811,398,280条历史推文,其中包含2120,964条症状信息。去噪后,39 %(832,287)的症状分享推文反映了与用户相关的提及。训练后的USM模型F1平均得分为0.927。进一步分析显示,与三角洲型和野生型相比,欧米克隆型期间上呼吸道症状的患病率更高。此外,野生型毒株和δ型毒株明显同时出现下呼吸道和神经系统症状。结论:本研究建立了一个强大的框架,用于分析纵向社交媒体数据,以监测大流行期间的症状。通过整合用户体验症状提及的去噪,我们的研究结果揭示了不同症状随时间的持续时间,并在近20万患者的队列中通过变化,提供了通过传统数据源通常难以捕获的症状趋势的关键见解。
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引用次数: 0
DOME: Directional medical embedding vectors from Electronic Health Records DOME:来自电子健康记录的定向医学嵌入向量。
IF 4 2区 医学 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2025-02-01 DOI: 10.1016/j.jbi.2024.104768
Jun Wen , Hao Xue , Everett Rush , Vidul A. Panickan , Tianrun Cai , Doudou Zhou , Yuk-Lam Ho , Lauren Costa , Edmon Begoli , Chuan Hong , J. Michael Gaziano , Kelly Cho , Katherine P. Liao , Junwei Lu , Tianxi Cai

Motivation:

The increasing availability of Electronic Health Record (EHR) systems has created enormous potential for translational research. Recent developments in representation learning techniques have led to effective large-scale representations of EHR concepts along with knowledge graphs that empower downstream EHR studies. However, most existing methods require training with patient-level data, limiting their abilities to expand the training with multi-institutional EHR data. On the other hand, scalable approaches that only require summary-level data do not incorporate temporal dependencies between concepts.

Methods:

We introduce a DirectiOnal Medical Embedding (DOME) algorithm to encode temporally directional relationships between medical concepts, using summary-level EHR data. Specifically, DOME first aggregates patient-level EHR data into an asymmetric co-occurrence matrix. Then it computes two Positive Pointwise Mutual Information (PPMI) matrices to correspondingly encode the pairwise prior and posterior dependencies between medical concepts. Following that, a joint matrix factorization is performed on the two PPMI matrices, which results in three vectors for each concept: a semantic embedding and two directional context embeddings. They collectively provide a comprehensive depiction of the temporal relationship between EHR concepts.

Results:

We highlight the advantages and translational potential of DOME through three sets of validation studies. First, DOME consistently improves existing direction-agnostic embedding vectors for disease risk prediction in several diseases, for example achieving a relative gain of 5.5% in the area under the receiver operating characteristic (AUROC) for lung cancer. Second, DOME excels in directional drug-disease relationship inference by successfully differentiating between drug side effects and indications, correspondingly achieving relative AUROC gain over the state-of-the-art methods by 10.8% and 6.6%. Finally, DOME effectively constructs directional knowledge graphs, which distinguish disease risk factors from comorbidities, thereby revealing disease progression trajectories. The source codes are provided at https://github.com/celehs/Directional-EHR-embedding.
动机:电子健康记录(EHR)系统的日益普及为转化研究创造了巨大的潜力。表示学习技术的最新发展导致了电子病历概念的有效大规模表示以及知识图,从而增强了下游电子病历研究的能力。然而,大多数现有方法都需要使用患者级别的数据进行培训,这限制了它们使用多机构电子病历数据扩展培训的能力。另一方面,只需要摘要级数据的可伸缩方法不包含概念之间的时间依赖关系。方法:采用摘要级EHR数据,引入一种定向医学嵌入(DOME)算法,对医学概念之间的时间方向关系进行编码。具体来说,DOME首先将患者级别的电子病历数据汇总到一个非对称共发生矩阵中。然后计算两个正点互信息矩阵,分别对两两先验/后验依赖进行编码。然后,对两个PPMI矩阵进行联合矩阵分解,得到每个概念的三个向量:一个语义嵌入和两个方向上下文嵌入。它们共同提供了EHR概念之间时间关系的全面描述。结果:通过三组验证研究,我们突出了DOME的优势和转化潜力。首先,DOME将现有的用于几种疾病(如肺癌)的疾病风险预测的方向不可知嵌入载体在接受者操作特征(AUROC)下的区域内持续提高了8.1%。其次,DOME通过成功区分药物副作用和适应症,在定向药物-疾病关系推断方面表现出色,在AUROC中,其性能相应地比最先进的方法提高了6.2%和5.5%。最后,DOME有效地构建了定向知识图,区分疾病危险因素和合并症,从而揭示疾病进展轨迹。源代码提供于https://github.com/celehs/Directional-EHR-embedding。
{"title":"DOME: Directional medical embedding vectors from Electronic Health Records","authors":"Jun Wen ,&nbsp;Hao Xue ,&nbsp;Everett Rush ,&nbsp;Vidul A. Panickan ,&nbsp;Tianrun Cai ,&nbsp;Doudou Zhou ,&nbsp;Yuk-Lam Ho ,&nbsp;Lauren Costa ,&nbsp;Edmon Begoli ,&nbsp;Chuan Hong ,&nbsp;J. Michael Gaziano ,&nbsp;Kelly Cho ,&nbsp;Katherine P. Liao ,&nbsp;Junwei Lu ,&nbsp;Tianxi Cai","doi":"10.1016/j.jbi.2024.104768","DOIUrl":"10.1016/j.jbi.2024.104768","url":null,"abstract":"<div><h3>Motivation:</h3><div>The increasing availability of Electronic Health Record (EHR) systems has created enormous potential for translational research. Recent developments in representation learning techniques have led to effective large-scale representations of EHR concepts along with knowledge graphs that empower downstream EHR studies. However, most existing methods require training with patient-level data, limiting their abilities to expand the training with multi-institutional EHR data. On the other hand, scalable approaches that only require summary-level data do not incorporate temporal dependencies between concepts.</div></div><div><h3>Methods:</h3><div>We introduce a DirectiOnal Medical Embedding (DOME) algorithm to encode temporally directional relationships between medical concepts, using summary-level EHR data. Specifically, DOME first aggregates patient-level EHR data into an asymmetric co-occurrence matrix. Then it computes two Positive Pointwise Mutual Information (PPMI) matrices to correspondingly encode the pairwise prior and posterior dependencies between medical concepts. Following that, a joint matrix factorization is performed on the two PPMI matrices, which results in three vectors for each concept: a semantic embedding and two directional context embeddings. They collectively provide a comprehensive depiction of the temporal relationship between EHR concepts.</div></div><div><h3>Results:</h3><div>We highlight the advantages and translational potential of DOME through three sets of validation studies. First, DOME consistently improves existing direction-agnostic embedding vectors for disease risk prediction in several diseases, for example achieving a relative gain of 5.5% in the area under the receiver operating characteristic (AUROC) for lung cancer. Second, DOME excels in directional drug-disease relationship inference by successfully differentiating between drug side effects and indications, correspondingly achieving relative AUROC gain over the state-of-the-art methods by 10.8% and 6.6%. Finally, DOME effectively constructs directional knowledge graphs, which distinguish disease risk factors from comorbidities, thereby revealing disease progression trajectories. The source codes are provided at <span><span>https://github.com/celehs/Directional-EHR-embedding</span><svg><path></path></svg></span>.</div></div>","PeriodicalId":15263,"journal":{"name":"Journal of Biomedical Informatics","volume":"162 ","pages":"Article 104768"},"PeriodicalIF":4.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142926986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Deep learning in surgical process modeling: A systematic review of workflow recognition 外科过程建模中的深度学习:工作流程识别的系统回顾。
IF 4 2区 医学 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2025-02-01 DOI: 10.1016/j.jbi.2025.104779
Zhenzhong Liu , Kelong Chen , Shuai Wang , Yijun Xiao , Guobin Zhang
Objective: The application of artificial intelligence (AI) in health care has led to a surge of interest in surgical process modeling (SPM). The objective of this study is to investigate the role of deep learning in recognizing surgical workflows and extracting reliable patterns from datasets used in minimally invasive surgery, thereby advancing the development of context-aware intelligent systems in endoscopic surgeries. Methods: We conducted a comprehensive search of articles related to SPM from 2018 to April 2024 in the PubMed, Web of Science, Google Scholar, and IEEE Xplore databases. We chose surgical videos with annotations to describe the article on surgical process modeling and focused on examining the specific methods and research results of each study. Results: The search initially yielded 2937 articles. After filtering on the basis of the relevance of titles, abstracts, and content, 59 articles were selected for full-text review. These studies highlight the widespread adoption of neural networks, and transformers for surgical workflow analysis (SWA). They focus on minimally invasive surgeries performed with laparoscopes and microscopes. However, the process of surgical annotation lacks detailed description, and there are significant differences in the annotation process for different surgical procedures. Conclusion: Time and spatial sequences are key factors determining the identification of surgical phase. RNN, TCN, and transformer networks are commonly used to extract long-distance temporal relationships. Multimodal data input is beneficial, as it combines information from surgical instruments. However, publicly available datasets often lack clinical knowledge, and establishing large annotated datasets for surgery remains a challenge. To reduce annotation costs, methods such as semi supervised learning, self-supervised learning, contrastive learning, transfer learning, and active learning are commonly used.
目的:人工智能(AI)在医疗保健领域的应用引起了人们对手术过程建模(SPM)的兴趣。本研究的目的是探讨深度学习在识别手术工作流程和从微创手术中使用的数据集中提取可靠模式中的作用,从而促进内镜手术中上下文感知智能系统的发展。方法:我们在PubMed、Web of Science、b谷歌Scholar和IEEE explore数据库中全面检索2018年至2024年4月与SPM相关的文章。我们选择带有注释的手术视频来描述这篇关于手术过程建模的文章,并重点考察了每项研究的具体方法和研究结果。结果:搜索最初产生了2937篇文章。根据题目、摘要和内容的相关性进行筛选后,选择59篇文章进行全文评审。这些研究强调了神经网络和变压器在手术工作流程分析(SWA)中的广泛应用。他们专注于用腹腔镜和显微镜进行的微创手术。然而,手术注释的过程缺乏详细的描述,不同手术过程的注释过程存在显著差异。结论:时间和空间序列是确定手术期的关键因素。RNN、TCN和变压器网络通常用于提取远距离时间关系。多模式数据输入是有益的,因为它结合了手术器械的信息。然而,公开可用的数据集往往缺乏临床知识,建立大型外科注释数据集仍然是一个挑战。为了降低标注成本,通常使用半监督学习、自监督学习、对比学习、迁移学习和主动学习等方法。
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引用次数: 0
Modelling diversity in hospital strategies in city-scale ambulance dispatching with coupled game-theoretic model and discrete-event simulation 基于耦合博弈论模型和离散事件仿真的城市救护车调度医院策略多样性建模。
IF 4 2区 医学 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2025-02-01 DOI: 10.1016/j.jbi.2025.104777
Xinyu Fu , Valeria Krzhizhanovskaya , Alexey Yakovlev , Sergey Kovalchuk
The optimization in the ambulance dispatching process is significant for patients who need early treatments. However, the problem of dynamic ambulance redeployment for destination hospital selection has rarely been investigated. The paper proposes an approach to model and simulate the ambulance dispatching process in multi-agent healthcare environments of large cities. The proposed approach is based on using the coupled game-theoretic (GT) approach to identify hospital strategies (considering hospitals as players within a non-cooperative game) and performing discrete-event simulation (DES) of patient delivery and provision of healthcare services to evaluate ambulance dispatching (selection of target hospital). Assuming the collective nature of decisions on patient delivery, the approach assesses the influence of the diverse behaviors of hospitals on system performance with possible further optimization of this performance. The approach is studied through a series of cases starting with a simplified 1D model and proceeding with a coupled 2D model and real-world application. The study considers the problem of dispatching ambulances to patients with the Acute Coronary Syndrome (ACS) directed to the Percutaneous Coronary Intervention (PCI) in the target hospital. A real-world case study of data from Saint Petersburg (Russia) is analyzed showing the better conformity of the global characteristics (mortality rate) of the healthcare system with the proposed approach being applied to discovering the agents’ diverse behavior.
救护车调度过程的优化对需要早期治疗的患者具有重要意义。然而,基于目的地医院选择的救护车动态调配问题鲜有研究。本文提出了一种大城市多智能体医疗环境下救护车调度过程的建模与仿真方法。所提出的方法是基于使用耦合博弈论(GT)方法来确定医院策略(将医院视为非合作博弈中的参与者),并执行患者交付和医疗服务提供的离散事件模拟(DES)来评估救护车调度(目标医院的选择)。假设病人分娩决策的集体性质,该方法评估医院的不同行为对系统绩效的影响,并可能进一步优化这种绩效。该方法通过一系列案例进行了研究,从一个简化的一维模型开始,到一个耦合的二维模型和实际应用。本研究考虑了在目标医院对急性冠脉综合征(ACS)患者进行经皮冠状动脉介入治疗(PCI)的救护车调度问题。对来自圣彼得堡(俄罗斯)的数据进行了现实世界的案例研究,分析结果显示,医疗保健系统的全球特征(死亡率)与所提出的用于发现代理人多样化行为的方法具有更好的一致性。
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引用次数: 0
Discontinuous named entities in clinical text: A systematic literature review 临床文本中的不连续命名实体:系统文献综述。
IF 4 2区 医学 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2025-02-01 DOI: 10.1016/j.jbi.2025.104783
Areej Alhassan , Viktor Schlegel , Monira Aloud , Riza Batista-Navarro , Goran Nenadic

Objective

Extracting named entities from clinical free-text presents unique challenges, particularly when dealing with discontinuous entities—mentions that are separated by unrelated words. Traditional NER methods often struggle to accurately identify these entities, prompting the development of specialised computational solutions. This paper systematically reviews and presents the methodologies developed for Discontinuous Named Entity Recognition in clinical texts, highlighting their effectiveness and the challenges they face.

Method

We conducted a systematic literature review focused on discontinuous named entities, using structured searches across four Computer Science-related and one medical-related electronic database. A combination of search terms, grouped into three synonym categories—problem, entity/approach, and task—yielded 2,442 articles. Guided by our research objectives, we identified five key dimensions to systematically annotate and normalise the data for comprehensive analysis.

Result

The review included 44 studies which were coded across several key dimensions: the chronological development of approaches, the corpora used, the downstream tasks affected by discontinuous named entities, the methodological approaches proposed to address the issue, and the reported performance outcomes. The discussion section examines the challenges encountered in this area and suggests potential directions for future research.

Conclusion

Significant progress has been made in discontinuous named entity recognition; however, there remains a need for more adaptable, generalisable solutions that are independent of custom annotation schemes. Exploring various configurations of generative language models presents a promising avenue for advancing this area. Additionally, future research should investigate the impact of precise versus imprecise recognition of discontinuous entities on clinical downstream tasks to better understand its practical implications in healthcare applications.
{"title":"Discontinuous named entities in clinical text: A systematic literature review","authors":"Areej Alhassan ,&nbsp;Viktor Schlegel ,&nbsp;Monira Aloud ,&nbsp;Riza Batista-Navarro ,&nbsp;Goran Nenadic","doi":"10.1016/j.jbi.2025.104783","DOIUrl":"10.1016/j.jbi.2025.104783","url":null,"abstract":"<div><h3>Objective</h3><div>Extracting named entities from clinical free-text presents unique challenges, particularly when dealing with discontinuous entities—mentions that are separated by unrelated words. Traditional NER methods often struggle to accurately identify these entities, prompting the development of specialised computational solutions. This paper systematically reviews and presents the methodologies developed for Discontinuous Named Entity Recognition in clinical texts, highlighting their effectiveness and the challenges they face.</div></div><div><h3>Method</h3><div>We conducted a systematic literature review focused on discontinuous named entities, using structured searches across four Computer Science-related and one medical-related electronic database. A combination of search terms, grouped into three synonym categories—problem, entity/approach, and task—yielded 2,442 articles. Guided by our research objectives, we identified five key dimensions to systematically annotate and normalise the data for comprehensive analysis.</div></div><div><h3>Result</h3><div>The review included 44 studies which were coded across several key dimensions: the chronological development of approaches, the corpora used, the downstream tasks affected by discontinuous named entities, the methodological approaches proposed to address the issue, and the reported performance outcomes. The discussion section examines the challenges encountered in this area and suggests potential directions for future research.</div></div><div><h3>Conclusion</h3><div>Significant progress has been made in discontinuous named entity recognition; however, there remains a need for more adaptable, generalisable solutions that are independent of custom annotation schemes. Exploring various configurations of generative language models presents a promising avenue for advancing this area. Additionally, future research should investigate the impact of precise versus imprecise recognition of discontinuous entities on clinical downstream tasks to better understand its practical implications in healthcare applications.</div></div>","PeriodicalId":15263,"journal":{"name":"Journal of Biomedical Informatics","volume":"162 ","pages":"Article 104783"},"PeriodicalIF":4.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143038921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ARCH: Large-scale knowledge graph via aggregated narrative codified health records analysis
IF 4 2区 医学 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2025-02-01 DOI: 10.1016/j.jbi.2024.104761
Ziming Gan , Doudou Zhou , Everett Rush , Vidul A. Panickan , Yuk-Lam Ho , George Ostrouchovm , Zhiwei Xu , Shuting Shen , Xin Xiong , Kimberly F. Greco , Chuan Hong , Clara-Lea Bonzel , Jun Wen , Lauren Costa , Tianrun Cai , Edmon Begoli , Zongqi Xia , J. Michael Gaziano , Katherine P. Liao , Kelly Cho , Junwei Lu

Objective:

Electronic health record (EHR) systems contain a wealth of clinical data stored as both codified data and free-text narrative notes (NLP). The complexity of EHR presents challenges in feature representation, information extraction, and uncertainty quantification. To address these challenges, we proposed an efficient Aggregated naRrative Codified Health (ARCH) records analysis to generate a large-scale knowledge graph (KG) for a comprehensive set of EHR codified and narrative features.

Methods:

Using data from 12.5 million Veterans Affairs patients, ARCH first derives embedding vectors and generates similarities along with associated p-values to measure the strength of relatedness between clinical features with statistical certainty quantification. Next, ARCH performs a sparse embedding regression to remove indirect linkage between features to build a sparse KG. Finally, ARCH was validated on various clinical tasks, including detecting known relationships between entity pairs, predicting drug side effects, disease phenotyping, as well as sub-typing Alzheimer’s disease patients.

Results:

ARCH produces high-quality clinical embeddings and KG for over 60,000 codified and narrative EHR concepts. The KG and embeddings are visualized in the R-shiny powered web-API.3 ARCH achieved high accuracy in detecting EHR concept relationships, with AUCs of 0.926 (codified) and 0.861 (NLP) for similar EHR concepts, and 0.810 (codified) and 0.843 (NLP) for related pairs. It detected drug side effects with a 0.723 AUC, which improved to 0.826 after fine-tuning. Using both codified and NLP features, the detection power increased significantly. Compared to other methods, ARCH has superior accuracy and enhances weakly supervised phenotyping algorithms’ performance. Notably, it successfully categorized Alzheimer’s patients into two subgroups with varying mortality rates.

Conclusion:

The proposed ARCH algorithm generates large-scale high-quality semantic representations and knowledge graph for both codified and NLP EHR features, useful for a wide range of predictive modeling tasks.
{"title":"ARCH: Large-scale knowledge graph via aggregated narrative codified health records analysis","authors":"Ziming Gan ,&nbsp;Doudou Zhou ,&nbsp;Everett Rush ,&nbsp;Vidul A. Panickan ,&nbsp;Yuk-Lam Ho ,&nbsp;George Ostrouchovm ,&nbsp;Zhiwei Xu ,&nbsp;Shuting Shen ,&nbsp;Xin Xiong ,&nbsp;Kimberly F. Greco ,&nbsp;Chuan Hong ,&nbsp;Clara-Lea Bonzel ,&nbsp;Jun Wen ,&nbsp;Lauren Costa ,&nbsp;Tianrun Cai ,&nbsp;Edmon Begoli ,&nbsp;Zongqi Xia ,&nbsp;J. Michael Gaziano ,&nbsp;Katherine P. Liao ,&nbsp;Kelly Cho ,&nbsp;Junwei Lu","doi":"10.1016/j.jbi.2024.104761","DOIUrl":"10.1016/j.jbi.2024.104761","url":null,"abstract":"<div><h3>Objective:</h3><div>Electronic health record (EHR) systems contain a wealth of clinical data stored as both codified data and free-text narrative notes (NLP). The complexity of EHR presents challenges in feature representation, information extraction, and uncertainty quantification. To address these challenges, we proposed an efficient <strong>A</strong>ggregated na<strong>R</strong>rative <strong>C</strong>odified <strong>H</strong>ealth (ARCH) records analysis to generate a large-scale knowledge graph (KG) for a comprehensive set of EHR codified and narrative features.</div></div><div><h3>Methods:</h3><div>Using data from 12.5 million Veterans Affairs patients, ARCH first derives embedding vectors and generates similarities along with associated <span><math><mi>p</mi></math></span>-values to measure the strength of relatedness between clinical features with statistical certainty quantification. Next, ARCH performs a sparse embedding regression to remove indirect linkage between features to build a sparse KG. Finally, ARCH was validated on various clinical tasks, including detecting known relationships between entity pairs, predicting drug side effects, disease phenotyping, as well as sub-typing Alzheimer’s disease patients.</div></div><div><h3>Results:</h3><div>ARCH produces high-quality clinical embeddings and KG for over 60,000 codified and narrative EHR concepts. The KG and embeddings are visualized in the R-shiny powered web-API.<span><span><sup>3</sup></span></span> ARCH achieved high accuracy in detecting EHR concept relationships, with AUCs of 0.926 (codified) and 0.861 (NLP) for similar EHR concepts, and 0.810 (codified) and 0.843 (NLP) for related pairs. It detected drug side effects with a 0.723 AUC, which improved to 0.826 after fine-tuning. Using both codified and NLP features, the detection power increased significantly. Compared to other methods, ARCH has superior accuracy and enhances weakly supervised phenotyping algorithms’ performance. Notably, it successfully categorized Alzheimer’s patients into two subgroups with varying mortality rates.</div></div><div><h3>Conclusion:</h3><div>The proposed ARCH algorithm generates large-scale high-quality semantic representations and knowledge graph for both codified and NLP EHR features, useful for a wide range of predictive modeling tasks.</div></div>","PeriodicalId":15263,"journal":{"name":"Journal of Biomedical Informatics","volume":"162 ","pages":"Article 104761"},"PeriodicalIF":4.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143038917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
BiomedRAG: A retrieval augmented large language model for biomedicine 生物医学检索增强大语言模型。
IF 4 2区 医学 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2025-02-01 DOI: 10.1016/j.jbi.2024.104769
Mingchen Li , Halil Kilicoglu , Hua Xu , Rui Zhang
Retrieval-augmented generation (RAG) involves a solution by retrieving knowledge from an established database to enhance the performance of large language models (LLM). , these models retrieve information at the sentence or paragraph level, potentially introducing noise and affecting the generation quality. To address these issues, we propose a novel BiomedRAG framework that directly feeds automatically retrieved chunk-based documents into the LLM. Our evaluation of BiomedRAG across four biomedical natural language processing tasks using eight datasets demonstrates that our proposed framework not only improves the performance by 9.95% on average, but also achieves state-of-the-art results, surpassing various baselines by 4.97%. BiomedRAG paves the way for more accurate and adaptable LLM applications in the biomedical domain.
检索增强生成(retrieve -augmented generation, RAG)是一种通过从已建立的数据库中检索知识来增强大型语言模型(LLM)性能的解决方案。,这些模型在句子或段落级别检索信息,可能会引入噪声并影响生成质量。为了解决这些问题,我们提出了一个新的生物医学rag框架,该框架直接将自动检索的基于块的文档馈送到法学硕士中。我们对使用8个数据集的四个生物医学自然语言处理任务的BiomedRAG进行了评估,结果表明,我们提出的框架不仅平均提高了9.95%的性能,而且达到了最先进的结果,超过了各种基线4.97%。生物医学rag为生物医学领域更准确和适应性强的法学硕士应用铺平了道路。
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引用次数: 0
Selecting a smartwatch for trials involving older adults with neurodegenerative diseases: A researcher’s framework to avoid hidden pitfalls
IF 4 2区 医学 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2025-02-01 DOI: 10.1016/j.jbi.2025.104781
Lydia D. Boyle , Brice Marty , Kristoffer Haugarvoll , Ole Martin Steihaug , Monica Patrascu , Bettina S. Husebo

Background

Increased prevalence of neurodegenerative diseases complicates care needs for older adults. Sensing technologies, such as smartwatches, are one available solution which can help address the challenges of aging. Knowledge of the possibilities and pitfalls of these sensing technologies is of key importance to researchers when choosing a device for a trial and considering the sustainability of these technologies in real-world settings.

Objective

This study aims to uncover hidden truths related to the suitability of smartwatches for use in clinical trials which include older adults with neurodegenerative diseases, including end-of-life and palliative care studies.

Method

We perform an analysis of smartwatch features vs. user and researcher needs and provide an overview of hidden expenses which should be considered by the research team. Investigative research on 11 smartwatches is presented, selected based on previous use in clinical studies and recommendations from fellow researchers.

Results

We found that expenses, battery life, choice of research vs. commercial grade devices, data management, study methodology, and participant demographics are principal factors in selecting a smartwatch for a clinical trial involving older adults with neurodegenerative diseases. A revised framework based on our findings, and concepts from Connely (2021), Mattison (2023), and Espay (2019) et al.’s previous work, is presented as a tool for researchers in evaluation of smartwatches and future sensing technologies.

Conclusion

Careful consideration must be given to the fitness of technologies for future research, especially considering that this is a rapidly changing field. The process of selection of a smartwatch for a clinical trial should be thoughtful, scrutinous, and include interdisciplinary collaboration.
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引用次数: 0
期刊
Journal of Biomedical Informatics
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