Association rules

关联规则
  • 文章类型: Journal Article
    疾病的症状可能因个体而异,并且可能在早期阶段未被发现。在初始阶段,检测这些症状对于有效管理和治疗不同严重程度的病例至关重要。机器学习近年来取得了重大进展,证明其在各种医疗保健应用中的有效性。这项研究旨在使用有监督和无监督的机器学习来识别患者的症状模式和有关症状的一般规则。基于规则的机器学习技术和分类方法的集成用于扩展预测模型。这项研究分析了通过Kaggle存储库在线获得的患者数据。在对数据进行预处理并探索描述性统计后,Apriori算法用于识别发现的规则中的频繁症状和模式。此外,这项研究应用了几种机器学习模型来预测疾病,包括逐步回归,支持向量机,引导森林,提升的树木,和神经增强方法。将几种预测性机器学习模型应用于数据集以预测疾病。发现在这项研究中,逐步拟合的方法优于所有竞争对手,通过基于既定标准对每个模型进行交叉验证确定。此外,在研究中提取了许多重要的决策规则,这可以简化临床应用,而不需要额外的专业知识。这些规则可以预测症状和疾病之间的关系,以及不同疾病之间。因此,在这项研究中获得的结果有可能提高预测模型的性能。我们可以使用数据集的监督和无监督机器学习来发现疾病症状和一般规则。总的来说,所提出的算法不仅可以支持医疗保健专业人员,还可以支持在诊断和治疗这些疾病时面临成本和时间限制的患者。
    The symptoms of diseases can vary among individuals and may remain undetected in the early stages. Detecting these symptoms is crucial in the initial stage to effectively manage and treat cases of varying severity. Machine learning has made major advances in recent years, proving its effectiveness in various healthcare applications. This study aims to identify patterns of symptoms and general rules regarding symptoms among patients using supervised and unsupervised machine learning. The integration of a rule-based machine learning technique and classification methods is utilized to extend a prediction model. This study analyzes patient data that was available online through the Kaggle repository. After preprocessing the data and exploring descriptive statistics, the Apriori algorithm was applied to identify frequent symptoms and patterns in the discovered rules. Additionally, the study applied several machine learning models for predicting diseases, including stepwise regression, support vector machine, bootstrap forest, boosted trees, and neural-boosted methods. Several predictive machine learning models were applied to the dataset to predict diseases. It was discovered that the stepwise method for fitting outperformed all competitors in this study, as determined through cross-validation conducted for each model based on established criteria. Moreover, numerous significant decision rules were extracted in the study, which can streamline clinical applications without the need for additional expertise. These rules enable the prediction of relationships between symptoms and diseases, as well as between different diseases. Therefore, the results obtained in this study have the potential to improve the performance of prediction models. We can discover diseases symptoms and general rules using supervised and unsupervised machine learning for the dataset. Overall, the proposed algorithm can support not only healthcare professionals but also patients who face cost and time constraints in diagnosing and treating these diseases.
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  • 文章类型: Journal Article
    -本文提出了一项针对乳腺癌亚型的综合研究,利用整合特征选择的多方面方法,机器学习分类器,和miRNA调控网络。特征选择过程从CFS算法开始,其次是关联规则生成的Apriori算法,从而识别出针对管腔A量身定制的重要特征,管腔B,HER-2丰富,和基底样亚型。随机森林(RF)和支持向量机(SVM)分类器的后续应用产生了有希望的结果,SVM模型的总体精度为76.60%,RF模型的鲁棒性能为80.85%。详细的准确性指标揭示了需要改进的优势和领域,强调优化亚型特异性召回的潜力。深入探讨监管格局,使用MIENTURNET对选定的miRNA进行分析,用于可视化miRNA-靶标相互作用的工具。虽然FDR分析引起了对HER-2和基底样亚型的担忧,管腔A和管腔B亚型显示出显著的miRNA-基因相互作用。LuminalA的功能富集分析强调了卵巢类固醇生成的作用,提示特定miRNA如hsa-let-7c-5p和hsa-miR-125b-5p作为LuminalA乳腺癌的潜在诊断生物标志物和调节因子。腔B分析揭示了与MAPK信号通路的关联,hsa-miR-203a-3p和hsa-miR-19a-3p等miRNA表现出潜在的诊断和治疗意义。总之,这种综合方法将机器学习技术与miRNA分析相结合,以提供对乳腺癌亚型的整体理解.鉴定的miRNA和相关通路提供了对潜在诊断生物标志物和治疗靶标的见解。为改善乳腺癌诊断和个性化治疗策略的持续努力做出贡献。
    - This paper presents a comprehensive study focused on breast cancer subtyping, utilizing a multifaceted approach that integrates feature selection, machine learning classifiers, and miRNA regulatory networks. The feature selection process begins with the CFS algorithm, followed by the Apriori algorithm for association rule generation, resulting in the identification of significant features tailored to Luminal A, Luminal B, HER-2 enriched, and Basal-like subtypes. The subsequent application of Random Forest (RF) and Support Vector Machine (SVM) classifiers yielded promising results, with the SVM model achieving an overall accuracy of 76.60 % and the RF model demonstrating robust performance at 80.85 %. Detailed accuracy metrics revealed strengths and areas for refinement, emphasizing the potential for optimizing subtype-specific recall. To explore the regulatory landscape in depth, an analysis of selected miRNAs was conducted using MIENTURNET, a tool for visualizing miRNA-target interactions. While FDR analysis raised concerns for HER-2 and Basal-like subtypes, Luminal A and Luminal B subtypes showcased significant miRNA-gene interactions. Functional enrichment analysis for Luminal A highlighted the role of Ovarian steroidogenesis, implicating specific miRNAs such as hsa-let-7c-5p and hsa-miR-125b-5p as potential diagnostic biomarkers and regulators of Luminal A breast cancer. Luminal B analysis uncovered associations with the MAPK signaling pathway, with miRNAs like hsa-miR-203a-3p and hsa-miR-19a-3p exhibiting potential diagnostic and therapeutic significance. In conclusion, this integrative approach combines machine learning techniques with miRNA analysis to provide a holistic understanding of breast cancer subtypes. The identified miRNAs and associated pathways offer insights into potential diagnostic biomarkers and therapeutic targets, contributing to the ongoing efforts to improve breast cancer diagnostics and personalized treatment strategies.
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  • 文章类型: Journal Article
    本研究的重点,这篇文章的主题,在概念上资助的可用性评估中,将描述性模型应用于从东斯洛伐克心脏和血管疾病研究所获得的针对心血管患者的特定数据集。深入研究当前最先进的实践,我们检查心血管疾病的程度,描述性数据分析模型,及其实际应用。最重要的是,我们的调查侧重于可用性的探索,包括其应用和评估方法,包括VanWelie的可用性分层模型及其固有的优势和局限性。我们研究的主要目的是概念化,发展,并通过描述性建模验证为支持心脏病专家研究量身定制的应用程序的可用性。使用R编程语言,我们设计了一个名为DESSFOCA(心脏病专家决策支持系统)的闪亮仪表板应用程序,该应用程序围绕三个核心功能构建:发现关联规则,应用聚类方法,并识别预定义集群内的关联规则。为了评估DESSFOCA的可用性,我们采用系统可用性量表(SUS)进行了综合评价。此外,我们提出了VanWelie的可用性分层模型的扩展,纳入了几个被认为至关重要的关键方面。随后,我们严格评估了DESSFOCA应用程序中关于扩展可用性模型的建议扩展,从我们的发现中得出有洞察力的结论。
    The focus of this study, and the subject of this article, resides in the conceptually funded usability evaluation of an application of descriptive models to a specific dataset obtained from the East Slovak Institute of Heart and Vascular Diseases targeting cardiovascular patients. Delving into the current state-of-the-art practices, we examine the extent of cardiovascular diseases, descriptive data analysis models, and their practical applications. Most importantly, our inquiry focuses on exploration of usability, encompassing its application and evaluation methodologies, including Van Welie\'s layered model of usability and its inherent advantages and limitations. The primary objective of our research was to conceptualize, develop, and validate the usability of an application tailored to supporting cardiologists\' research through descriptive modeling. Using the R programming language, we engineered a Shiny dashboard application named DESSFOCA (Decision Support System For Cardiologists) that is structured around three core functionalities: discovering association rules, applying clustering methods, and identifying association rules within predefined clusters. To assess the usability of DESSFOCA, we employed the System Usability Scale (SUS) and conducted a comprehensive evaluation. Additionally, we proposed an extension to Van Welie\'s layered model of usability, incorporating several crucial aspects deemed essential. Subsequently, we rigorously evaluated the proposed extension within the DESSFOCA application with respect to the extended usability model, drawing insightful conclusions from our findings.
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  • 文章类型: Journal Article
    目的:本研究旨在调查东部老年人肝病合并症的危险因素,中央,和中国西部,探索二进制,健康生态模型中肝病的三元和四元共病共因果模式。
    方法:使用中国健康与退休纵向研究(CHARLS)的数据分析了9,763名老年人的基本信息。LASSO回归用于确定东部地区的重要预测因子,中央,和中国西部。使用关联规则研究了肝病合并症的模式,并使用地理信息系统分析了空间分布。此外,二进制,三元,和四元网络图被构建来说明肝脏疾病合并症和共同原因之间的关系。
    结果:在9,763名老年人中,536人被发现患有肝病合并症,二元或三元合并症是最普遍的。肝病合并症患病率较高的省份主要集中在内蒙古,四川,和河南。确定的最常见的合并症模式是“肝-心-代谢”,“肝肾”,“肝肺”,和“肝-胃-关节炎”。在东部地区,重要的组合模式包括“肝病-代谢性疾病”,“肝病-胃病”,和“肝病-关节炎”,主要影响因素为睡眠时间小于6h,经常喝酒,女性,和日常活动能力。在中部地区,常见的组合模式包括“肝病-心脏病”,“肝病-代谢性疾病”,和“肝病-肾病”,主要影响因素是小学以下的教育水平,婚姻,有医疗保险,锻炼,没有残疾。在西部地区,主要共病模式是“肝病-慢性肺病”,“肝病-胃病”,“肝病-心脏病”,和“肝病-关节炎”,主要影响因素是健康满意度一般或较差,一般或健康状况不佳,剧烈疼痛,没有残疾。
    结论:与肝病相关的合并症在整体和局部水平上都表现出特定的聚类模式。通过分析不同地区肝病的共病模式,建立共病共病因果模式,本研究为肝病的防治提供了新的视角和科学依据。
    OBJECTIVE: This study aimed to investigate the risk factors for liver disease comorbidity among older adults in eastern, central, and western China, and explored binary, ternary and quaternary co-morbid co-causal patterns of liver disease within a health ecological model.
    METHODS: Basic information from 9,763 older adults was analyzed using data from the China Health and Retirement Longitudinal Study (CHARLS). LASSO regression was employed to identify significant predictors in eastern, central, and western China. Patterns of liver disease comorbidity were studied using association rules, and spatial distribution was analyzed using a geographic information system. Furthermore, binary, ternary, and quaternary network diagrams were constructed to illustrate the relationships between liver disease comorbidity and co-causes.
    RESULTS: Among the 9,763 elderly adults studied, 536 were found to have liver disease comorbidity, with binary or ternary comorbidity being the most prevalent. Provinces with a high prevalence of liver disease comorbidity were primarily concentrated in Inner Mongolia, Sichuan, and Henan. The most common comorbidity patterns identified were \"liver-heart-metabolic\", \"liver-kidney\", \"liver-lung\", and \"liver-stomach-arthritic\". In the eastern region, important combination patterns included \"liver disease-metabolic disease\", \"liver disease-stomach disease\", and \"liver disease-arthritis\", with the main influencing factors being sleep duration of less than 6 h, frequent drinking, female, and daily activity capability. In the central region, common combination patterns included \"liver disease-heart disease\", \"liver disease-metabolic disease\", and \"liver disease-kidney disease\", with the main influencing factors being an education level of primary school or below, marriage, having medical insurance, exercise, and no disabilities. In the western region, the main comorbidity patterns were \"liver disease-chronic lung disease\", \"liver disease-stomach disease\", \"liver disease-heart disease\", and \"liver disease-arthritis\", with the main influencing factors being general or poor health satisfaction, general or poor health condition, severe pain, and no disabilities.
    CONCLUSIONS: The comorbidities associated with liver disease exhibit specific clustering patterns at both the overall and local levels. By analyzing the comorbidity patterns of liver diseases in different regions and establishing co-morbid co-causal patterns, this study offers a new perspective and scientific basis for the prevention and treatment of liver diseases.
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  • 文章类型: Journal Article
    近年来,在中国非法倾倒危险废物(IDHW)已成为一个反复出现的问题。有效识别和探索非法倾倒的影响因素,对于事故预防和危险废物管理至关重要,但其分析却鲜有报道。因此,这项研究集中于政府正式报告的568例IDHW病例。通过正则表达式,提取了倾倒废物的类别和发生事件的省份。此外,通过对案例内容的文本挖掘和现有文献的整合,构建了一套全面的影响因素。在此基础上,使用布尔数据集整合非结构化和结构化数据,以分别探索整个IDHW和主要废物类别的影响因素的关联规则,结合提取的省份信息。随后,利用关联规则挖掘的结果构建了贝叶斯网络,并通过相应的分析确定了关键因子。这项研究的结果揭示了各种影响因素之间的密切联系,为不同类别的危险废物确定了不同的关键因素。其中,在大多数IDHW案件中,执法成为一个关键因素,而对金属危险废物的公众监测因素和对蒸馏残渣废物和其他废物的政府监管因素在各自的非法倾倒案件中起着关键作用。这些发现为调查影响IDHW的因素提供了新的研究视角,并为制定预防和控制此类事件的有效策略提供了有益的见解。
    In recent years, illegal dumping of hazardous waste (IDHW) in China has become a recurring problem. Effective identification and exploration of the factors influencing illegal dumping are crucial for incident prevention and hazardous waste management, but its analysis has rarely been reported. Thus, this study focused on 568 cases of IDHW officially reported by the government. Through regular expressions, the categories of dumped wastes and the provinces where the incidents occurred were extracted. Furthermore, a comprehensive set of influencing factors was constructed by text mining for the case content and by the integration from the existing literature. On this basis, the unstructured and structured data were integrated using a Boolean dataset to respectively explore the association rules of influencing factors for the overall IDHW and for major waste categories, in conjunction with the extracted province information. Subsequently, a Bayesian network was constructed by utilizing the results of association rules mining and the key factors were identified through corresponding analysis. The findings of this study reveal a close connection between various influencing factors, with distinct key factors identified for different categories of hazardous waste. Among them, law-enforcement emerges as a crucial factor in most IDHW cases, while the factor of public monitoring for metallic hazardous waste and the factor of government supervision for distillation residue waste and other waste play a key role in their respective cases of illegal dumping. These findings offer a fresh research perspective for investigating the factors influencing IDHW and present helpful insights for developing effective strategies to prevent and control such incidents.
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  • 文章类型: Journal Article
    十字路口是自动驾驶汽车(AV)的高风险地点。基于碰撞前情景的碰撞原因分析可以为这些碰撞提供新的见解,从而可以导致有效的对策,但是自动驾驶和传统车辆在碰撞前的场景有很大的不同,AV数据不足限制了研究。关联规则方法,然而,可以产生有用的结果,尽管这些限制。因此,本研究旨在使用碰撞前情景的方法,从最新的5年房车碰撞数据中了解十字路口房车碰撞的特征和影响因素。对197个十字路口的AV撞车事故的分析揭示了30种类型的撞车前情景。追尾事故(58.88%)和变道事故(16.24%)是AVs最常见的情况。被常规车辆追尾的AVs比例为58.38%。通过关联规则识别了这两种最常见的AV场景的主要影响因素,并从AV决策的角度分析了崩溃原因。导致AV后端场景的主要因素是与交叉路口相关区域中交叉路口外的位置,交通信号控制,自主参与模式,混合使用或公共土地,和工作日,而变道场景是路边停车和上午8:00的时间。可归因于自动驾驶的追尾事故的重要原因是自动驾驶系统(ADS)的停车和减速决策不足,以及在变道事故中避免碰撞的决策不足。碰撞前特征和影响因素的识别提供了对AV碰撞原因的新见解,可用于确定AV的操作设计领域以及在交叉路口开发和优化AV的ADS。这些发现也可以起到引导交通安全机构发现AV热点并提出AV管理规定的作用。
    Intersections are high-risk locations for autonomous vehicles (AVs). Crash causation analysis based on pre-crash scenarios can provide new insight into these crashes that can lead to effective countermeasures, but there are significant differences in pre-crash scenarios between autonomous and conventional vehicles, and inadequate AV data has put limits on research. The association rule method, however, can yield useful results despite these limits. This study therefore aims to use the method with pre-crash scenarios to understand the characteristics and contributing factors of AV crashes at intersections from the latest 5-year AV crash data. Analysis of 197 AV crashes at intersections revealed 30 types of pre-crash scenarios. The rear-end crash (58.88%) and lane change crash (16.24%) were the most frequently occurring scenarios for AVs. The proportion of AVs being rear-ended by conventional vehicles was 58.38%. The main contributing factors of these two most common AV scenarios were identified by association rules and crash causes were analyzed from the perspective of AV decision-making. The main factors contributing to the AV rear-end scenario were location outside the intersection in the intersection-related area, traffic signal control, autonomous engaged mode, mixed-use or public land, and weekdays, while those for lane change scenarios were on-street parking and the time of 8:00 a.m. Important causes of rear-end crashes attributable to the AV were inadequate stop and deceleration decisions by the AV\'s automated driving system (ADS) and insufficient collision avoidance decisions in lane change crashes. Identification of the pre-crash characteristics and contributing factors provide new insight into AV crash causation and can be used in the determination of the AV\'s operational design domain and the development and optimization of the AV\'s ADS at intersections. These findings can also play a role in guiding traffic safety agencies to discover AV hotspots and propose AV management regulations.
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  • 文章类型: Journal Article
    术后肠梗阻(POI)是腹部手术后常见的并发症,这可能会对患者的福祉和医疗费用产生重大负面影响。然而,目前的治疗效果并不令人满意。目的评价针刺干预治疗结直肠癌(CRC)患者POI的疗效,探讨取穴规律。
    我们搜索了8个电子数据库,以确定关于针灸治疗CRC中POI的随机对照试验(RCT),并进行了荟萃分析。随后,我们利用Apriori算法和频繁模式增长算法,结合复杂网络和聚类分析,识别穴位的关联规则。
    荟萃分析表明,针刺导致首次排便时间显着减少(MD=-20.93,95CI:-25.35,-16.51;I2=93.0%;p<0.01;n=2805),首次排气(MD=-15.08,95CI:-18.39,-11.76;I2=96%;p<0.01;n=3284),肠鸣音恢复(MD=-10.96,95CI:-14.20,-7.72;I2=94%;p<0.01;n=2043)。亚组分析显示,当与常规护理一起使用时,针灸不仅减少了POI的持续时间,而且当整合到增强的手术后恢复(ERAS)途径中时,还进一步加快了结直肠手术后肠道功能的恢复。纳入分析的研究报告没有与针灸相关的严重不良事件。我们鉴定了足三里(ST36),上巨旭(ST37),内关(PC6),三阴交(SP6),夏居旭(ST39),Hegu(LI4),天舒(ST25),和中湾(RN12)作为治疗POI的主要穴位。关联规则挖掘建议的潜在穴位组合包括{ST37,ST39}≥{ST36},{PC6,ST37}≥{ST36},{SP6,ST37}≥{ST36},{ST25,ST37}≥{ST36}。
    荟萃分析表明,针灸在促进胃肠道恢复方面的安全性和优于单纯术后护理的有效性。机器学习方法强调了低He海点的重要性,包括足三里(ST36)和上居虚(ST37),在CRC患者POI的治疗中。结合其他穴位,例如内关(PC6)(用于疼痛和呕吐)和三阴交(SP6)(用于腹胀和食欲不振)可以优化治疗结果。这些发现为临床和实验环境中完善治疗方案提供了有价值的见解,最终加强患者护理。
    UNASSIGNED: Postoperative ileus (POI) is a common complication following abdominal surgery, which can lead to significant negative impacts on patients\' well-being and healthcare costs. However, the efficacy of current treatments is not satisfactory. The purpose of this study was to evaluate the therapeutic effects of acupuncture intervention and explore the regulation of acupoint selection for treating POI in colorectal cancer (CRC) patients.
    UNASSIGNED: We searched eight electronic databases to identify randomized controlled trials (RCTs) on acupuncture for POI in CRC and conducted a meta-analysis. Subsequently, we utilized the Apriori algorithm and the Frequent pattern growth algorithm, in conjunction with complex network and cluster analysis, to identify association rules of acupoints.
    UNASSIGNED: The meta-analysis showed that acupuncture led to significant reductions in time to first defecation (MD=-20.93, 95%CI: -25.35, -16.51; I2 = 93.0%; p < 0.01; n=2805), first flatus (MD=-15.08, 95%CI: -18.39, -11.76; I2 = 96%; p < 0.01; n=3284), and bowel sounds recovery (MD=-10.96, 95%CI: -14.20, -7.72; I2 = 94%; p < 0.01; n=2043). A subgroup analysis revealed that acupuncture not only reduced the duration of POI when administered alongside conventional care but also further expedited the recovery of gut function after colorectal surgery when integrated into the enhanced recovery after surgery (ERAS) pathway. The studies included in the analysis reported no instances of serious adverse events associated with acupuncture. We identified Zusanli (ST36), Shangjuxu (ST37), Neiguan (PC6), Sanyinjiao (SP6), Xiajuxu (ST39), Hegu (LI4), Tianshu (ST25), and Zhongwan (RN12) as primary acupoints for treating POI. Association rule mining suggested potential acupoint combinations including {ST37, ST39}≥{ST36}, {PC6, ST37}≥{ST36}, {SP6, ST37}≥{ST36}, and {ST25, ST37}≥{ST36}.
    UNASSIGNED: Meta-analysis indicates acupuncture\'s safety and superior effectiveness over postoperative care alone in facilitating gastrointestinal recovery. Machine-learning approaches highlight the importance of the lower He-sea points, including Zusanli (ST36) and Shangjuxu (ST37), in treating POI in CRC patients. Incorporating additional acupoints such as Neiguan (PC6) (for pain and vomiting) and Sanyinjiao (SP6) (for abdominal distension and poor appetite) can optimize treatment outcomes. These findings offer valuable insights for refining treatment protocols in both clinical and experimental settings, ultimately enhancing patient care.
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  • 文章类型: Journal Article
    随着人们对遥感影像应用需求的不断增加,从庞大的遥感图像集中提取所需的图像已成为热门话题。以前的检索方法不能保证效率,准确度,和检索过程中的可解释性。因此,我们提出了一种词袋关联映射方法,可以解释遥感图像的语义推导过程。该方法通过视觉特征词包构建低级特征和高级语义之间的关联。提出了一种改进的FP-Growth方法来实现对语义的强关联规则构造。建立了一种反馈机制,通过降低错误检索结果的语义概率来提高后续检索的准确性。公共数据集AID和NWPU-RESISC45用于验证这些实验。实验结果表明,两种数据集的平均准确率分别达到87.5%和90.8%,分别比VGG16高22.5%和20.3%,比ResNet18高17.6%和15.6%。实验结果验证了所提方法的有效性。
    With the increasing demand for remote sensing image applications, extracting the required images from a huge set of remote sensing images has become a hot topic. The previous retrieval methods cannot guarantee the efficiency, accuracy, and interpretability in the retrieval process. Therefore, we propose a bag-of-words association mapping method that can explain the semantic derivation process of remote sensing images. The method constructs associations between low-level features and high-level semantics through visual feature word packets. An improved FP-Growth method is proposed to achieve the construction of strong association rules to semantics. A feedback mechanism is established to improve the accuracy of subsequent retrievals by reducing the semantic probability of incorrect retrieval results. The public datasets AID and NWPU-RESISC45 were used to validate these experiments. The experimental results show that the average accuracies of the two datasets reach 87.5% and 90.8%, which are 22.5% and 20.3% higher than VGG16, and 17.6% and 15.6% higher than ResNet18, respectively. The experimental results were able to validate the effectiveness of our proposed method.
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  • 文章类型: Journal Article
    在本文中,我们处理分布式数据,这些数据要么表示为具有相等属性集的决策表的有限集T,要么表示为具有相等属性集的信息系统的有限集I。在前一种情况下,我们讨论了一种研究集合T中所有表共有的决策树的方法:构建一个决策表,其中决策树集合与T中所有表共有的决策树集合一致。我们展示了何时可以构建这样的决策表以及如何在多项式时间内构建它。如果我们有这样一张桌子,我们可以应用各种决策树学习算法。我们将所考虑的方法扩展到T的所有表格所共有的测试(缩减)和决策规则的研究。在后一种情况下,我们讨论了一种从集合I中研究所有信息系统共有的关联规则的方法:构建一个联合信息系统,对于该联合信息系统,对于给定行ρ可实现并且在右侧具有给定属性a的真实关联规则集合与对于I中所有信息系统都为真实的关联规则集合重合,属性a在右侧,并且对于行ρ是可实现的。然后,我们展示如何在多项式时间内构建联合信息系统。当我们建立这样一个信息系统时,我们可以对其应用各种关联规则学习算法。
    In this paper, we deal with distributed data represented either as a finite set T of decision tables with equal sets of attributes or a finite set I of information systems with equal sets of attributes. In the former case, we discuss a way to the study decision trees common to all tables from the set T: building a decision table in which the set of decision trees coincides with the set of decision trees common to all tables from T. We show when we can build such a decision table and how to build it in a polynomial time. If we have such a table, we can apply various decision tree learning algorithms to it. We extend the considered approach to the study of test (reducts) and decision rules common to all tables from T. In the latter case, we discuss a way to study the association rules common to all information systems from the set I: building a joint information system for which the set of true association rules that are realizable for a given row ρ and have a given attribute a on the right-hand side coincides with the set of association rules that are true for all information systems from I, have the attribute a on the right-hand side, and are realizable for the row ρ. We then show how to build a joint information system in a polynomial time. When we build such an information system, we can apply various association rule learning algorithms to it.
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  • 文章类型: Journal Article
    在世界各地的传统医学系统中,香附被广泛用于治疗和预防多种疾病。比如紧张,胃肠道系统疾病和炎症。在中医(TCM),它的根茎经常用于治疗肝病,胃痛,乳房压痛,痛经和月经不调。进行审查是为了全面总结植物的白话名称,分布,植物化学,药理学,毒理学和分析方法,同时对含有圆斑弧菌的中药处方进行数据挖掘。在这里,系统整理和分类了从圆弧菌中分离或鉴定的552种化合物,关于单萜,倍半萜,黄酮类化合物,苯丙素类化合物,酚类和酚类糖苷,三萜类和类固醇,二萜,醌类,生物碱,糖类和其他。它们对消化系统的药理作用,神经系统,妇科疾病,和其他生物活性,如抗氧化剂,抗炎,抗癌,驱虫剂,抗微生物活性,等。进行了相应的总结。此外,除了对中药中圆斑弧菌的相容性进行数据挖掘外,分离,系统总结了圆斑弧菌成分的鉴定和分析方法,并对不同地区的精油成分进行了多元统计分析。此外,对该草本植物的毒理学研究进展揭示了该草本植物的安全性。本文旨在为进一步探索圆斑念珠菌的临床应用和科学研究提供科学依据和理论参考。

    在线版本包含补充材料,可在10.1007/s11101-023-09870-3获得。
    Cyperus rotundus L. has been widely used in the treatment and prevention of numerous diseases in traditional systems of medicine around the world, such as nervous, gastrointestinal systems diseases and inflammation. In traditional Chinese medicine (TCM), its rhizomes are frequently used to treat liver disease, stomach pain, breast tenderness, dysmenorrheal and menstrual irregularities. The review is conducted to summarize comprehensively the plant\'s vernacular names, distribution, phytochemistry, pharmacology, toxicology and analytical methods, along with the data mining for TCM prescriptions containing C. rotundus. Herein, 552 compounds isolated or identified from C. rotundus were systematically collated and classified, concerning monoterpenoids, sesquiterpenoids, flavonoids, phenylpropanoids, phenolics and phenolic glycosides, triterpenoids and steroids, diterpenoids, quinonoids, alkaloids, saccharides and others. Their pharmacological effects on the digestive system, nervous system, gynecological diseases, and other bioactivities like antioxidant, anti-inflammatory, anti-cancer, insect repellent, anti-microbial activity, etc. were summarized accordingly. Moreover, except for the data mining on the compatibility of C. rotundus in TCM, the separation, identification and analytical methods of C. rotundus compositions were also systematically summarized, and constituents of the essential oils from different regions were re-analyzed using multivariate statistical analysis. In addition, the toxicological study progresses on C. rotundus revealed the safety property of this herb. This review is designed to serve as a scientific basis and theoretical reference for further exploration into the clinical use and scientific research of C. rotundus.
    UNASSIGNED:
    UNASSIGNED: The online version contains supplementary materials available at 10.1007/s11101-023-09870-3.
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