Data mining

数据挖掘
  • 文章类型: Journal Article
    背景:石油行业的工作场所事故会对人们造成灾难性的损害,property,和环境。该领域的早期研究表明,大多数事故报告信息以非结构化文本格式提供。事故数据分析的常规技术耗时且严重依赖专家的学科知识,经验,和判断。需要开发基于机器学习的决策支持系统,以分析由于缺乏适当的方法而经常被忽视的大量非结构化文本数据。
    方法:为了解决文献中的这一差距,我们提出了一种混合方法,该方法使用改进的文本挖掘技术,并结合非偏见群体决策框架,将风险因素的客观权重(基于文本挖掘)和主观权重(基于专家意见)的输出进行优先级排序。基于语境词嵌入模型和术语频率,我们提取了5个重要的危险因素集群,包括32个以上的危险子因素.联系了石油行业的异质专家和员工小组,以获取他们对提取的风险因素的意见,并使用最佳-最差的方法将他们的意见转换为权重。
    结论:我们提出的框架的适用性是在根据印度石油工业发布的事故数据汇编的数据上进行的测试。我们的框架可以扩展到任何行业的事故数据,减少分析时间,提高风险因素分类和优先排序的准确性。
    BACKGROUND: Workplace accidents in the petroleum industry can cause catastrophic damage to people, property, and the environment. Earlier studies in this domain indicate that the majority of the accident report information is available in unstructured text format. Conventional techniques for the analysis of accident data are time-consuming and heavily dependent on experts\' subject knowledge, experience, and judgment. There is a need to develop a machine learning-based decision support system to analyze the vast amounts of unstructured text data that are frequently overlooked due to a lack of appropriate methodology.
    METHODS: To address this gap in the literature, we propose a hybrid methodology that uses improved text-mining techniques combined with an un-bias group decision-making framework to combine the output of objective weights (based on text mining) and subjective weights (based on expert opinion) of risk factors to prioritize them. Based on the contextual word embedding models and term frequencies, we extracted five important clusters of risk factors comprising more than 32 risk sub-factors. A heterogeneous group of experts and employees in the petroleum industry were contacted to obtain their opinions on the extracted risk factors, and the best-worst method was used to convert their opinions to weights.
    CONCLUSIONS: The applicability of our proposed framework was tested on the data compiled from the accident data released by the petroleum industries in India. Our framework can be extended to accident data from any industry, to reduce analysis time and improve the accuracy in classifying and prioritizing risk factors.
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  • 文章类型: Journal Article
    本研究记录了Shahrbabak的药用植物的土著知识,伊朗。我们描述了一种使用数据挖掘算法来预测药用植物应用模式的方法。对28至81岁的21人进行了采访。首先,数据的收集和分析基于定量指标,如举报人共识因子(ICF),文化重要性指数(CI)和相对引用频率(RFC)。其次,数据由支持向量机分类,J48决策树,神经网络,和逻辑回归。所以,记录了来自43个植物科的141种药用植物。唇形科,有18种,是植物中的优势家族,植物叶子最常用于药用。汤剂是最常用的制备方法(56%),植物中植物植物最占优势(48.93%)。关于RFC指数,最重要的物种是铁线莲和车前草。,而ArtemisiaauseriBoiss.根据CI指数排名第一。ICF指数表明,代谢紊乱是Shahrbabak地区植物中最常见的问题。最后,J48决策树算法始终优于其他方法,在10倍交叉验证和70-30个数据分割方案中实现95%的准确性。开发的模型以最大的精度检测如何消费药用植物。
    The present study recorded indigenous knowledge of medicinal plants in Shahrbabak, Iran. We described a method using data mining algorithms to predict medicinal plants\' mode of application. Twenty-oneindividuals aged 28 to 81 were interviewed. Firstly, data were collected and analyzed based on quantitative indices such as the informant consensus factor (ICF), the cultural importance index (CI), and the relative frequency of citation (RFC). Secondly, the data was classified by support vector machines, J48 decision trees, neural networks, and logistic regression. So, 141 medicinal plants from 43 botanical families were documented. Lamiaceae, with 18 species, was the dominant family among plants, and plant leaves were most frequently used for medicinal purposes. The decoction was the most commonly used preparation method (56%), and therophytes were the most dominant (48.93%) among plants. Regarding the RFC index, the most important species are Adiantum capillus-veneris L. and Plantago ovata Forssk., while Artemisia auseri Boiss. ranked first based on the CI index. The ICF index demonstrated that metabolic disorders are the most common problems among plants in the Shahrbabak region. Finally, the J48 decision tree algorithm consistently outperforms other methods, achieving 95% accuracy in 10-fold cross-validation and 70-30 data split scenarios. The developed model detects with maximum accuracy how to consume medicinal plants.
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  • 文章类型: Journal Article
    背景:从临床文本中提取的实体的语义可以通过修饰符显着改变,包括实体否定,不确定性,条件性,严重程度,和主题。用于确定临床实体的修饰符的现有模型涉及针对每个修饰符独立训练的正则表达式或特征权重。
    方法:我们开发和评估了一种多任务变压器架构设计,其中使用公开的SemEval2015Task14语料库和新的阿片类药物使用障碍(OUD)数据集共同学习和预测修饰符,该数据集包含与Semval共享的修饰符以及针对OUD的新颖修饰符。我们评估了我们的多任务学习方法与以前发布的系统的有效性,并评估了当只有一部分临床修饰语共享时,临床实体修饰语迁移学习的可行性。
    结果:我们的方法在SemEval2015Task14的ShARe语料库上取得了最先进的结果,加权精度提高了1.1%,未加权精度为1.7%,微F1得分为10%。
    结论:我们表明,从我们的共享模型中学习到的权重可以有效地转移到新的部分匹配的数据集,验证迁移学习在临床文本修饰语中的应用。
    BACKGROUND: The semantics of entities extracted from a clinical text can be dramatically altered by modifiers, including entity negation, uncertainty, conditionality, severity, and subject. Existing models for determining modifiers of clinical entities involve regular expression or features weights that are trained independently for each modifier.
    METHODS: We develop and evaluate a multi-task transformer architecture design where modifiers are learned and predicted jointly using the publicly available SemEval 2015 Task 14 corpus and a new Opioid Use Disorder (OUD) data set that contains modifiers shared with SemEval as well as novel modifiers specific for OUD. We evaluate the effectiveness of our multi-task learning approach versus previously published systems and assess the feasibility of transfer learning for clinical entity modifiers when only a portion of clinical modifiers are shared.
    RESULTS: Our approach achieved state-of-the-art results on the ShARe corpus from SemEval 2015 Task 14, showing an increase of 1.1% on weighted accuracy, 1.7% on unweighted accuracy, and 10% on micro F1 scores.
    CONCLUSIONS: We show that learned weights from our shared model can be effectively transferred to a new partially matched data set, validating the use of transfer learning for clinical text modifiers.
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  • 文章类型: Journal Article
    确定FDA不良事件报告系统(FAERS)中最常见的与QT间期延长相关的药物,并评估其QT间期延长的风险。
    我们使用了来自监管活动医学词典(MedDRA)26.0的首选术语(PT)“心电图QT延长”,以识别2004-2022年FAERS数据库中QT间期延长的不良药物事件(ADE)。进行报告比值比(ROR)以量化ADE的信号。
    我们列出了导致QT间期延长的前40种药物。其中,病例数最高的3种药物是喹硫平(1151例,ROR=7.62),奥氮平(754例,ROR=7.92),和西酞普兰(720例,ROR=13.63)。两个最常报告的一级解剖治疗化学(ATC)组是神经系统药物(n=19,47.50%)和全身使用的抗感染药(n=7,17.50%)。除性别缺失患者外(n=3,482,23.68%),女性(7,536,51.24%)多于男性(5,158,35.07%)。3,720名患者(25.29%)遭受了严重的临床结果,导致死亡或危及生命的状况。总的来说,根据Weibull形状参数(WSP)分析的评估,大多数导致QT间期延长的药物具有早期失效类型.
    我们的研究提供了一系列基于FAERS系统的经常引起QT间期延长的药物,以及这些药物引起的QT间期延长的一些风险特征的描述。在临床实践中开出这些药物时,应密切监测ADE对QT间期延长的发生。
    UNASSIGNED: To identify the most commonly reported drugs associated with QT interval prolongation in the FDA Adverse Event Reporting System (FAERS) and evaluate their risk for QT interval prolongation.
    UNASSIGNED: We employed the preferred term (PT) \"electrocardiogram QT prolonged\" from the Medical Dictionary for Regulatory Activities (MedDRA) 26.0 to identify adverse drug events (ADEs) of QT interval prolongation in the FAERS database from the period 2004-2022. Reporting odds ratio (ROR) was performed to quantify the signals of ADEs.
    UNASSIGNED: We listed the top 40 drugs that caused QT interval prolongation. Among them, the 3 drugs with the highest number of cases were quetiapine (1,151 cases, ROR = 7.62), olanzapine (754 cases, ROR = 7.92), and citalopram (720 cases, ROR = 13.63). The two most frequently reported first-level Anatomical Therapeutic Chemical (ATC) groups were the drugs for the nervous system (n = 19, 47.50%) and antiinfectives for systemic use (n = 7, 17.50%). Patients with missing gender (n = 3,482, 23.68%) aside, there were more females (7,536, 51.24%) than males (5,158, 35.07%) were involved. 3,720 patients (25.29%) suffered serious clinical outcomes resulting in deaths or life-threatening conditions. Overall, most drugs that caused QT interval prolongation had early failure types according to the assessment of the Weibull\'s shape parameter (WSP) analysis.
    UNASSIGNED: Our study offered a list of drugs that frequently caused QT interval prolongation based on the FAERS system, along with a description of some risk profiles for QT interval prolongation brought on by these drugs. When prescribing these drugs in clinical practice, we should closely monitor the occurrence of ADE for QT interval prolongation.
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  • 文章类型: Journal Article
    目的:评估自然语言处理(NLP)方法,以从放射学报告中推断转移部位。
    方法:使用一组4,522例14种癌症患者的计算机断层扫描(CT)报告,对四个临床大语言模型(LLM)进行微调,以对转移部位进行多标签分类。我们还开发了一个NLP信息提取(IE)系统(在命名实体识别的基础上,断言状态检测,和关系提取)进行比较。通过测试和三个外部验证集上的F1分数来衡量模型性能。在6,555例患者和53,838例CT报告的队列研究中,使用了最佳模型来促进转移频率的分析。
    结果:RadBERT,Biobert,GatorTron基地,和GatorTron-mediumLLM的F1得分分别为0.84、0.87、0.89和0.91,在测试装置上。IE系统表现最好,F1得分为0.93。根据个体癌症类型,IE系统的F1评分范围为0.89至0.96。IE系统的F1得分分别为0.89、0.83和0.81,在外部验证集上,包括其他癌症类型,正电子发射断层扫描-CT,和磁共振成像扫描,分别。在我们的队列研究中,我们发现对于结直肠癌,与复发患者相比,初发IV期仅肝转移较高(29.7%v12.2%;P<.001).相反,单肺转移在复发与从头IV期患者中更为常见(17.2%v7.3%;P<.001).
    结论:我们开发了一种IE系统,可以从放射学报告中准确推断多原发癌的转移部位。IthasexplainablemethodsandperformancebetterthansomeclinicalLLM.Theforceedtransactive表型couldenhancecancerresearchdatabasesandclinicaltrialmatching,并确定进行寡转移干预的潜在患者。
    To evaluate natural language processing (NLP) methods to infer metastatic sites from radiology reports.
    A set of 4,522 computed tomography (CT) reports of 550 patients with 14 types of cancer was used to fine-tune four clinical large language models (LLMs) for multilabel classification of metastatic sites. We also developed an NLP information extraction (IE) system (on the basis of named entity recognition, assertion status detection, and relation extraction) for comparison. Model performances were measured by F1 scores on test and three external validation sets. The best model was used to facilitate analysis of metastatic frequencies in a cohort study of 6,555 patients with 53,838 CT reports.
    The RadBERT, BioBERT, GatorTron-base, and GatorTron-medium LLMs achieved F1 scores of 0.84, 0.87, 0.89, and 0.91, respectively, on the test set. The IE system performed best, achieving an F1 score of 0.93. F1 scores of the IE system by individual cancer type ranged from 0.89 to 0.96. The IE system attained F1 scores of 0.89, 0.83, and 0.81, respectively, on external validation sets including additional cancer types, positron emission tomography-CT ,and magnetic resonance imaging scans, respectively. In our cohort study, we found that for colorectal cancer, liver-only metastases were higher in de novo stage IV versus recurrent patients (29.7% v 12.2%; P < .001). Conversely, lung-only metastases were more frequent in recurrent versus de novo stage IV patients (17.2% v 7.3%; P < .001).
    We developed an IE system that accurately infers metastatic sites in multiple primary cancers from radiology reports. It has explainable methods and performs better than some clinical LLMs. The inferred metastatic phenotypes could enhance cancer research databases and clinical trial matching, and identify potential patients for oligometastatic interventions.
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  • 文章类型: Journal Article
    本文探讨了通过应用人工智能(AI)技术利用电子健康记录(EHR)进行个性化健康研究的潜力,具体命名实体识别(NER)。通过从临床文本中提取关键的患者信息,包括诊断,药物,症状,和实验室测试,人工智能有助于快速识别相关数据,为未来的护理范式铺平道路。该研究的重点是非小细胞肺癌(NSCLC)在意大利的临床记录,引入一组新的29个临床实体,包括是否存在(否定)与NSCLC相关的相关信息。使用在意大利生物医学文本上预先训练的最先进的模型,我们取得了有希望的结果(平均F1分数为80.8%),证明了采用人工智能提取意大利语生物医学信息的可行性。
    This paper explores the potential of leveraging electronic health records (EHRs) for personalized health research through the application of artificial intelligence (AI) techniques, specifically Named Entity Recognition (NER). By extracting crucial patient information from clinical texts, including diagnoses, medications, symptoms, and lab tests, AI facilitates the rapid identification of relevant data, paving the way for future care paradigms. The study focuses on Non-small cell lung cancer (NSCLC) in Italian clinical notes, introducing a novel set of 29 clinical entities that include both presence or absence (negation) of relevant information associated with NSCLC. Using a state-of-the-art model pretrained on Italian biomedical texts, we achieve promising results (average F1-score of 80.8%), demonstrating the feasibility of employing AI for extracting biomedical information in the Italian language.
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  • 文章类型: Journal Article
    这项研究调查了环境温度之间的关系,天气条件,以及Qazvin省的道路交通事故类型,伊朗。该研究解决了道路交通事故的重大社会挑战,尤其是像伊朗这样的发展中国家。目的是分析温度与事故类型之间的相关性,并使用数据挖掘技术开发预测模型。这项研究采用了定量的方法,分析了2010年至2020年的15,000多个事故记录。研究结果揭示了温度变量与道路事故类型以及天气条件之间的联系。此外,数据挖掘分析识别温度变量之间的可预测模式,道路交通事故的类型,和天气条件。该研究的含义强调了将温度和天气条件视为影响事故的次要因素的重要性。预测模型可以帮助决策者制定有效的策略来减少事故。了解温度之间的关系,天气,和事故类型可以设计有针对性的干预措施,以提高道路安全。这项研究为减少事故的努力提供了宝贵的见解,并强调了在道路安全规划和决策中解决环境变量的重要性。此外,数据挖掘模式分析结果表明,各种天气条件下的翻车事故是事故的主要类型,其次是连锁事故。然而,事故的类型根据不同的天气条件和温度而有所不同。这项研究强调了天气状况之间的错综复杂的联系,温度,以及道路交通事故的类型。通过利用数据挖掘技术,这项研究为事故模式提供了一个预测模型,提供有价值的见解,以加强道路安全策略。
    This study investigates the relationship between ambient temperature, weather conditions, and types of road accidents in Qazvin province, Iran. The research addresses a significant societal challenge of road accidents, particularly in developing countries like Iran. The objectives are to analyze the correlation between temperature and accident types and to develop a predictive model using data mining techniques. The study employs a quantitative approach, analyzing over 15,000 accident records from 2010 to 2020. The findings reveal a connection between the temperature variable and the type of road accidents as well as weather conditions. Additionally, data mining analysis identifies a predictable pattern among temperature variables, types of road accidents, and weather conditions. Implications of the study underscore the importance of considering temperature and weather conditions as secondary factors influencing accidents. The predictive model can aid decision-makers in formulating effective strategies to reduce accidents. Understanding the relationship between temperature, weather, and accident types enables the design of targeted interventions to enhance road safety. This research contributes valuable insights to accident reduction efforts and emphasizes the significance of addressing environmental variables in road safety planning and policy-making. Moreover, the results of the data mining pattern analysis indicate that car overturning accidents in various weather conditions are the primary type of accidents, followed by chain accidents. However, the types of accidents vary based on different weather conditions and temperatures. The study highlights the intricate connection between weather conditions, temperature, and types of road accidents. By utilizing data mining techniques, the research provides a predictive model for accident patterns, offering valuable insights to enhance road safety strategies.
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  • 文章类型: Journal Article
    目的:肝脏成像报告和数据系统(LI-RADS)为肝细胞癌成像提供了一种标准化方法。然而,放射学报告的不同样式和结构使自动数据提取变得复杂。大型语言模型具有从自由文本报告中提取结构化数据的潜力。我们的目标是评估生成预训练变压器(GPT)-4从自由文本肝脏磁共振成像(MRI)报告中提取LI-RADS特征和类别的性能。
    方法:三位放射科医生用韩语和英语生成了160份虚构的自由文本肝脏MRI报告,模拟现实世界的实践。其中,20个用于即时工程,140人组成了内部测试队列.七十二份真实报告,由17名放射科医师撰写,我们对外部检测队列进行了收集和去识别.使用GPT-4提取LI-RADS特征,并使用Python脚本计算类别。比较每个测试队列的准确性。
    结果:在外部测试中,主要LI-RADS特征提取的准确性,包括大小,非边缘动脉期增快,非外围\'冲刷\'',增强“胶囊”和阈值增长,范围从.92到.99。对于其余的LI-RADS功能,精度范围从.86到.97。对于LI-RADS类别,该模型的准确性为.85(95%CI:.76,.93)。
    结论:GPT-4在提取LI-RADS特征方面显示出希望,进一步完善其提示策略和改进其神经网络架构对于可靠地处理复杂的真实世界MRI报告至关重要.
    OBJECTIVE: The Liver Imaging Reporting and Data System (LI-RADS) offers a standardized approach for imaging hepatocellular carcinoma. However, the diverse styles and structures of radiology reports complicate automatic data extraction. Large language models hold the potential for structured data extraction from free-text reports. Our objective was to evaluate the performance of Generative Pre-trained Transformer (GPT)-4 in extracting LI-RADS features and categories from free-text liver magnetic resonance imaging (MRI) reports.
    METHODS: Three radiologists generated 160 fictitious free-text liver MRI reports written in Korean and English, simulating real-world practice. Of these, 20 were used for prompt engineering, and 140 formed the internal test cohort. Seventy-two genuine reports, authored by 17 radiologists were collected and de-identified for the external test cohort. LI-RADS features were extracted using GPT-4, with a Python script calculating categories. Accuracies in each test cohort were compared.
    RESULTS: On the external test, the accuracy for the extraction of major LI-RADS features, which encompass size, nonrim arterial phase hyperenhancement, nonperipheral \'washout\', enhancing \'capsule\' and threshold growth, ranged from .92 to .99. For the rest of the LI-RADS features, the accuracy ranged from .86 to .97. For the LI-RADS category, the model showed an accuracy of .85 (95% CI: .76, .93).
    CONCLUSIONS: GPT-4 shows promise in extracting LI-RADS features, yet further refinement of its prompting strategy and advancements in its neural network architecture are crucial for reliable use in processing complex real-world MRI reports.
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  • 文章类型: Journal Article
    从混合数据中提取知识,包括分类数据和数值数据,由于在转换过程中保存信息和实际意义的固有困难,因此提出了重大挑战。为了应对这一挑战,混合数据处理方法,结合互补粗糙集,已经成为处理不确定性的一种有希望的方法。然而,选择合适的模型并在数据挖掘中有效地利用它需要对现有的混合数据处理模型进行彻底的定性和定量比较。本研究旨在通过研究基于邻域粗糙集的混合数据处理模型之间的内在关系,为分析这些模型做出贡献。我们提出了一种基于通用邻域粗糙集的混合模型,专门用于处理混合数据,从而提高了数据挖掘过程的效率,而无需求助于离散化,并避免了数据集中的信息丢失或实际意义降级。所提出的方案根据给定数据集的特征动态地适应邻域近似空间的阈值,确保最佳性能而不牺牲精度。为了评估拟议方案的有效性,我们开发了一个专为帕金森患者量身定制的测试床,混合数据处理特别相关的领域。实验结果表明,该方案在自适应处理数字和分类数据方面始终优于现有方案。在帕金森的数据集上实现了95%的令人印象深刻的准确率。总的来说,这项研究有助于推进混合数据处理技术,通过提供一个强大的和自适应的解决方案,解决与处理混合数据相关的挑战,特别是在帕金森病分析的背景下。
    Extracting knowledge from hybrid data, comprising both categorical and numerical data, poses significant challenges due to the inherent difficulty in preserving information and practical meanings during the conversion process. To address this challenge, hybrid data processing methods, combining complementary rough sets, have emerged as a promising approach for handling uncertainty. However, selecting an appropriate model and effectively utilizing it in data mining requires a thorough qualitative and quantitative comparison of existing hybrid data processing models. This research aims to contribute to the analysis of hybrid data processing models based on neighborhood rough sets by investigating the inherent relationships among these models. We propose a generic neighborhood rough set-based hybrid model specifically designed for processing hybrid data, thereby enhancing the efficacy of the data mining process without resorting to discretization and avoiding information loss or practical meaning degradation in datasets. The proposed scheme dynamically adapts the threshold value for the neighborhood approximation space according to the characteristics of the given datasets, ensuring optimal performance without sacrificing accuracy. To evaluate the effectiveness of the proposed scheme, we develop a testbed tailored for Parkinson\'s patients, a domain where hybrid data processing is particularly relevant. The experimental results demonstrate that the proposed scheme consistently outperforms existing schemes in adaptively handling both numerical and categorical data, achieving an impressive accuracy of 95% on the Parkinson\'s dataset. Overall, this research contributes to advancing hybrid data processing techniques by providing a robust and adaptive solution that addresses the challenges associated with handling hybrid data, particularly in the context of Parkinson\'s disease analysis.
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  • 文章类型: Journal Article
    在空调生产中,有各种问题,如复杂的要求,冗余站,过多的工时,和低生产线平衡率。本文旨在通过分析H公司商用空调生产线的历史数据来解决这些问题。数据分为五个方面:站,工作时间,标准工作时间,劳动能力,以及瓶颈过程的存在。优化和完善第二条生产线,本文应用了基于数据挖掘的生产线平衡管理方法。它利用数据挖掘中的决策树模型,并结合了工业工程中的精益生产知识。目标是确定影响生产线平衡的关键因素,并解决由这些因素引起的问题。目的是减少和消除多余的工作时间,提高生产线的平衡率。通过实施本文概述的方法,第二条生产线的瓶颈时间从96.67s减少到74.6s,生产线平衡率从68%提高到85%。
    In the production of air conditioners, there are various issues such as complex requirements, redundant stations, excessive man-hours, and low production line balance rate. This paper aims to address these problems by analyzing the historical data of H Company\'s commercial air conditioner production line. The data is categorized into five aspects: station, working hours, standard working hours, labor capacity, and presence of bottleneck processes. To optimize and improve the second production line, this paper applies the production line balance management method based on data mining. It utilizes the decision tree model in data mining and incorporates lean production knowledge from industrial engineering. The goal is to identify crucial factors that affect the balance of the production line and address the issues caused by these factors. The aim is to reduce and eliminate redundant working hours and enhance the balance rate of the production line. By implementing the approach outlined in this paper, the bottleneck time of the second production line was reduced from 96.67 s to 74.6 s, and the production line balance rate increased from 68% to 85%.
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