Knowledge-based systems

  • 文章类型: Journal Article
    糖尿病是一种非传染性疾病,已达到流行病的程度,影响全球5.37亿人。人工智能可以支持患者或临床医生进行糖尿病营养治疗-这是大多数1型和2型糖尿病病例的第一种药物治疗。特别是,基于本体的推荐器和决策支持系统可以提供专家知识的可计算表示,从而提供患者定制的营养建议或支持临床人员确定最合适的饮食。这项工作提出了对描述此类系统中糖尿病的领域本体的系统文献综述,确定它们的潜在概念化,系统针对的用户,解决了糖尿病的类型,以及提供的营养建议。这篇综述还深入研究了领域本体的结构,强调可能阻碍(或促进)糖尿病营养治疗的推荐和决策支持系统采用它们的几个方面。此审查过程的结果可以强调如何制定建议以及临床专家在开发领域本体论中的作用,概述了这一研究领域的研究趋势。研究结果还可以确定研究方向,这些研究方向可以促进临床专家和临床指南在合作努力中发挥突出作用,使本体更具互操作性-从而使它们能够在糖尿病营养治疗的决策过程中发挥重要作用。
    Diabetes is a non-communicable disease that has reached epidemic proportions, affecting 537 million people globally. Artificial Intelligence can support patients or clinicians in diabetes nutrition therapy - the first medical therapy in most cases of Type 1 and Type 2 diabetes. In particular, ontology-based recommender and decision support systems can deliver a computable representation of experts\' knowledge, thus delivering patient-tailored nutritional recommendations or supporting clinical personnel in identifying the most suitable diet. This work proposes a systematic literature review of the domain ontologies describing diabetes in such systems, identifying their underlying conceptualizations, the users targeted by the systems, the type(s) of diabetes tackled, and the nutritional recommendations provided. This review also delves into the structure of the domain ontologies, highlighting several aspects that may hinder (or foster) their adoption in recommender and decision support systems for diabetes nutrition therapy. The results of this review process allow to underline how recommendations are formulated and the role of clinical experts in developing domain ontologies, outlining the research trends characterizing this research area. The results also allow for identifying research directions that can foster a preeminent role for clinical experts and clinical guidelines in a cooperative effort to make ontologies more interoperable - thus enabling them to play a significant role in the decision-making processes about diabetes nutrition therapy.
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  • 文章类型: Journal Article
    及时治疗慢性阻塞性肺疾病(COPD)急性加重可以改善康复并降低住院风险。数字治疗是数字干预,基于最好的证据,旨在提供基于家庭的,以患者为中心,为患者提供普遍的自我管理支持。数字疗法可以有效地用于为患者提供个性化和可解释的自我管理和行为改变资源,以减轻COPD的负担,尤其是预防COPD急性加重。COPD特定数字疗法用于自我管理的功能需要基于临床证据和行为理论,符合COPD患者及其护理提供者的自我管理需求。在本文中,我们报告了COPD数字治疗移动应用程序的功能,该应用程序基于一项涉及COPD患者和医生的需求分析定性研究,and,根据这项研究的发现,我们提出了一种知识驱动的COPD自我管理数字化治疗方法.
    Timely management of Chronic Obstructive Pulmonary Disease (COPD) exacerbations can improve recovery and reduce the risk of hospitalization. Digital therapeutics are digital interventions, based on best evidence, designed to provide home-based, patient-centered and pervasive self-management support to patients. Digital therapeutics can be effectively used to offer personalized and explainable self-management and behaviour modification resources to patients to reduce the burden of COPD, especially the prevention of acute COPD exacerbations. The functionalities of COPD specific digital therapeutics for self-management need to be grounded in clinical evidence and behavioral theories, in keeping with the self-management needs of COPD patients and their care providers. In this paper, we report the functionalities of a COPD digital therapeutic mobile application based on a needs analysis qualitative study involving both COPD patients and physicians, and, based on the study\'s finding, we present a knowledge-driven digital therapeutic for COPD self-management.
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  • 文章类型: Journal Article
    在大多数情况下,基于计算机的医疗诊断专家系统被认为既准确又在教育上有帮助。头晕和眩晕是最常见的抱怨之一,但E.N.T.在外围区域没有外科医生和神经耳科医生。计算机辅助神经病理学诊断(CADINO)对于这些偏远和农村地区的无病头晕患者具有巨大的价值。这项研究旨在记录力量,卡迪诺在准确性方面的弱点和能力,教育有用性,功能和有效性。设计诊断工具的基于医院的观察研究。设置耳鼻咽喉科三级护理医学院医院。这项前瞻性研究在70名患者中进行,来自期刊的24例模拟病例和6例病例报告。该研究甚至包括咨询前后临床医生的反馈。11名耳鼻喉科居民,14名耳鼻喉科外科医生[8名教师和6名顾问]参与了这项研究。发现CADINO的总体诊断准确性为86%。而在患者中,发现CADINO准确度为84%,与院系/顾问(80%)相似,但明显优于居民(57%)。大多数临床医生(84%)将CADINO咨询评为在教育上有帮助,对病人管理有用。发现CADINO非常有效和方便,因为它可以在OPD中同时进行操作,同时评估头晕患者。CADINO提供了准确的诊断建议。发现通过增强临床医生的知识和认知技能来改善患者的安全性和护理质量。
    Computer-based medical diagnosis expert systems are considered both accurate and educationally helpful in most cases. Dizziness and vertigo are among the most common complaints however E.N.T. surgeons and neuro-otologists are not available in the peripheral areas. Computer-Aided Diagnosis In NeurOtology (CADINO) can be of immense value for these unprivileged dizzy patients of remote and rural areas. The study aimed to document the strength, weaknesses and capabilities of CADINO in terms of accuracy, educational usefulness, functionality and effectiveness. Design Hospital-based observational study of a diagnostic tool. Settings Otorhinolaryngology Department of a tertiary care medical college hospital. This prospective study was conducted in 70 patients, 24 simulated cases and 6 case reports from journals. The study included even the feedback of the clinicians before and after consultation. Eleven ENT residents, 14 ENT surgeons [8 teachers and 6 consultants] participated in the study. The overall diagnostic accuracy of the CADINO was found 86%. While in the patients, CADINO accuracy was found 84% approximately similar to faculties/consultants (80%) but it was significantly better than that of residents (57%). Most of the clinicians (84%), rated the CADINO consultation as being educationally helpful, and useful for patient management. CADINO was found very effective and convenient as it could be operated in the OPD simultaneously while evaluating the dizzy patients. CADINO provided accurate diagnostic suggestions. It was found improving patient safety and quality of care by enhancing knowledge and cognitive skills of the clinicians.
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  • 文章类型: Journal Article
    未经批准:耳鸣,被称为“耳鸣”,是一种广泛且经常致残的听力障碍。没有药物治疗,但是临床管理技术,如耳鸣再训练疗法(TRT),证明在帮助病人方面是有效的。虽然有效,TRT没有广泛提供,由于缺乏专业知识和高度个性化的复杂性。在这项研究中,提出了一种数据驱动的临床决策支持工具来指导临床医生实施TRT.
    UNASSIGNED:这项研究提出了数据分析模型的制定,基于监督机器学习(ML)技术,如分类模型和诊断决策规则,以及支持TRT交付的治疗行动规则。提出了一种基于知识的临床决策支持系统(CDSS)框架,作为基于UI的Java应用程序,该应用程序具有嵌入式WEKA预测模型和Java专家系统Shell(JESS)规则引擎以及用于推理的模式匹配算法(Rete)。知识库通过准确性进行评估,覆盖范围,以及诊断预测和治疗建议的可解释性。
    UNASSIGNED:ML方法应用于来自埃默里大学医学院耳鸣和高音中心的耳鸣患者的临床数据集,其中描述了555名患者和3,000次就诊。用于诊断和规则的经过验证的ML分类模型:关联和可操作的治疗模式被嵌入到CDSS的知识库中。对CDSS原型进行了决策支持的准确性和可解释性测试,初步测试平均准确率为80%,令人满意的覆盖范围,和可解释性。
    未经评估:结果是经过验证的原型CDS系统,有望促进TRT实践。
    UNASSIGNED: Tinnitus, known as \"ringing in the ears\", is a widespread and frequently disabling hearing disorder. No pharmacological treatment exists, but clinical management techniques, such as tinnitus retraining therapy (TRT), prove effective in helping patients. Although effective, TRT is not widely offered, due to scarcity of expertise and complexity because of a high level of personalization. Within this study, a data-driven clinical decision support tool is proposed to guide clinicians in the delivery of TRT.
    UNASSIGNED: This research proposes the formulation of data analytics models, based on supervised machine learning (ML) techniques, such as classification models and decision rules for diagnosis, and action rules for treatment to support the delivery of TRT. A knowledge-based framework for clinical decision support system (CDSS) is proposed as a UI-based Java application with embedded WEKA predictive models and Java Expert System Shell (JESS) rule engine with a pattern-matching algorithm for inference (Rete). The knowledge base is evaluated by the accuracy, coverage, and explainability of diagnostics predictions and treatment recommendations.
    UNASSIGNED: The ML methods were applied to a clinical dataset of tinnitus patients from the Tinnitus and Hyperacusis Center at Emory University School of Medicine, which describes 555 patients and 3,000 visits. The validated ML classification models for diagnosis and rules: association and actionable treatment patterns were embedded into the knowledge base of CDSS. The CDSS prototype was tested for accuracy and explainability of the decision support, with preliminary testing resulting in an average of 80% accuracy, satisfactory coverage, and explainability.
    UNASSIGNED: The outcome is a validated prototype CDS system that is expected to facilitate the TRT practice.
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  • 文章类型: Journal Article
    背景:临床实践指南是基于现有最佳证据的声明,他们的目标是提高病人护理的质量。将临床实践指南集成到计算机系统中可以帮助医生减少医疗错误并帮助他们获得最佳实践。基于指南的临床决策支持系统在支持医生的决策方面发挥着重要作用。同时,系统错误是决策支持系统设计中最关键的问题,可以影响其性能和效率。一个完善的本体可以在这个问题上有所帮助。拟议的系统审查将具体说明方法,组件,规则的语言,当前基于本体驱动的基于指南的临床决策支持系统的评价方法。
    方法:这篇综述将通过搜索MEDLINE(通过Ovid)来识别文献,PubMed,EMBASE,科克伦图书馆,CINAHL,ScienceDirect,IEEEXplore,ACM数字图书馆。灰色文学,引用列表,并将检索所纳入研究的引用文章。纳入研究的质量将通过混合方法评估工具(MMAT-2018版)进行评估。至少有两名独立审稿人将进行筛选,质量评估,和数据提取。第三位审稿人将解决任何分歧。将根据系统类型和本体工程评估数据进行适当的数据分析。
    结论:该研究将为在基于指南的临床决策支持系统中应用本体提供证据。这项系统审查的结果将为决策支持系统设计人员和开发人员提供指导,技术人员,系统提供商,政策制定者,和利益相关者。本体构建者可以使用本综述中的信息为个性化医疗构建结构良好的本体。
    背景:PROSPEROCRD42018106501.
    Clinical practice guidelines are statements which are based on the best available evidence, and their goal is to improve the quality of patient care. Integrating clinical practice guidelines into computer systems can help physicians reduce medical errors and help them to have the best possible practice. Guideline-based clinical decision support systems play a significant role in supporting physicians in their decisions. Meantime, system errors are the most critical concerns in designing decision support systems that can affect their performance and efficacy. A well-developed ontology can be helpful in this matter. The proposed systematic review will specify the methods, components, language of rules, and evaluation methods of current ontology-driven guideline-based clinical decision support systems.
    This review will identify literature through searching MEDLINE (via Ovid), PubMed, EMBASE, Cochrane Library, CINAHL, ScienceDirect, IEEEXplore, and ACM Digital Library. Gray literature, reference lists, and citing articles of the included studies will be searched. The quality of the included studies will be assessed by the mixed methods appraisal tool (MMAT-version 2018). At least two independent reviewers will perform the screening, quality assessment, and data extraction. A third reviewer will resolve any disagreements. Proper data analysis will be performed based on the type of system and ontology engineering evaluation data.
    The study will provide evidence regarding applying ontologies in guideline-based clinical decision support systems. The findings of this systematic review will be a guide for decision support system designers and developers, technologists, system providers, policymakers, and stakeholders. Ontology builders can use the information in this review to build well-structured ontologies for personalized medicine.
    PROSPERO CRD42018106501.
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  • 文章类型: Journal Article
    现代生产系统可以从集成和最新的数字表示中受益匪浅。它们的应用范围从设计阶段的一致性检查到智能制造到维护支持。这样的数字孪生不仅需要数据,信息和知识作为输入,但也可以被视为集成模型本身。本文提供了数据概述,通常在生产系统的整个生命周期中以及由数据分析驱动的各种应用程序中可用的信息和知识,专家知识和基于知识的系统。在此基础上,我们描述了在生产系统背景下结合数据分析和基于知识的系统的潜力,并描述了两个可行性研究,这些研究展示了如何使用数据分析创建基于知识的系统。本文是主题问题“走向共生自治系统”的一部分。
    Modern production systems can benefit greatly from integrated and up-to-date digital representations. Their applications range from consistency checks during the design phase to smart manufacturing to maintenance support. Such digital twins not only require data, information and knowledge as inputs but can also be considered integrated models themselves. This paper provides an overview of data, information and knowledge typically available throughout the lifecycle of production systems and the variety of applications driven by data analysis, expert knowledge and knowledge-based systems. On this basis, we describe the potential for combining data analysis and knowledge-based systems in the context of production systems and describe two feasibility studies that demonstrate how knowledge-based systems can be created using data analysis. This article is part of the theme issue \'Towards symbiotic autonomous systems\'.
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  • 文章类型: Journal Article
    Multiple sclerosis (MS) is a neurological disorder that strikes the central nervous system. Due to the complexity of this disease, healthcare sectors are increasingly in need of shared clinical decision-making tools to provide practitioners with insightful knowledge and information about MS. These tools ought to be comprehensible by both technical and non-technical healthcare audiences. To aid this cause, this literature review analyzes the state-of-the-art decision support systems (DSSs) in MS research with a special focus on model-driven decision-making processes. The review clusters common methodologies used to support the decision-making process in classifying, diagnosing, predicting, and treating MS. This work observes that the majority of the investigated DSSs rely on knowledge-based and machine learning (ML) approaches, so the utilization of ontology and ML in the MS domain is observed to extend the scope of this review. Finally, this review summarizes the state-of-the-art DSSs, discusses the methods that have commonalities, and addresses the future work of applying DSS technologies in the MS field.
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  • 文章类型: Journal Article
    The milling process is a complex phenomenon dependent on various technological and material parameters. The development of a fluidized bed jet milling model is of high practical significance, since milling is utilized in many industries, and its complexity is still not sufficiently recognized. Therefore, this research aims to optimize fluidized bed jet milling with the use of fuzzy logic (FL) based approach as one of the primary artificial intelligence (AI) methods. The developed fuzzy logic model (FLMill) of the investigated process allows it to be described as a non-iterative procedure, over a wide range of operating conditions. Working air pressure, rotational speed of the classifier rotor, and time of conducting the test are considered as inputs, while mass and mean Sauter diameter of the product are defined as outputs. Several triangular and constant linguistic terms are used in the developed FLMill model, which was validated against the experimental data. The optimum working air pressure and the test\'s conducting time are 500 kPa and 3000 s, respectively. The optimum rotational speed of the classifier is equal to 50 s-1, considering the mass of the grinding product, and 250 s-1 for the mean Sauter diameter of the product. Such operating parameters allow obtaining 243.3 g of grinding product with the mean Sauter diameter of 11 µm. The research proved that the use of fuzzy logic modeling as a computer-based technique of solving mechanical engineering problems allows effective optimization of the fluidized bed jet milling process.
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  • 文章类型: Journal Article
    Processes like the care of type 2 diabetes mellitus patients require support by information systems considering the heterogeneity of the actors from different domains involved, enabling harmonization and integration of their specific methodologies and knowledge representation approaches towards interdisciplinary cooperation. Currently, the development of systems starts from the simplified information world, ignoring the aforementioned heterogeneity and specificity of real-world processes. This paper aims to demonstrate the feasibility of developing an adaptive, interoperable and intelligent system that supports the major aspects of type 2 diabetes mellitus care based on the Generic Component Model as formal methodology for modelling universal systems. The result is a deployable solution based on a formal representation of the diabetes care system, its objectives, and the intended business process. The implemented system enables reasoning over the data, inferring medical diagnosis. The effectiveness of the inference was evaluated, obtaining an F-measure of 0.89. The methods presented in this paper helps to build high quality models based on computation-independent aspects, which enable the construction of knowledge-based adaptive, intelligent and interoperable eHealth systems.
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  • 文章类型: Journal Article
    心理工作量(MWL)是一种不精确的结构,具有不同的定义,没有主要的测量技术。它可以直观地视为随着时间的推移,用于某项任务的心理活动量。文献中已经提出了几种用于MWL建模和评估的方法。在本文中,报告与参与者在不同条件下执行的两组任务相关的数据。这些数据是从这些参与者回答的不同问卷集合中收集的。这些问卷旨在评估领域专家认为会影响整体心理工作量的特征。总的来说,报告了872条记录,每个代表用户在执行任务后给出的答案。一方面,收集的数据可能支持机器学习研究人员有兴趣使用预测分析来评估心理工作量。另一方面,数据,如果被一组规则/参数利用(如在[3]中),可以作为基于知识的系统和自动推理领域的研究人员的知识库。最后,数据可能作为心理工作量设计师的信息来源,他们有兴趣调查此处报告的用于心理工作量建模的特征。这篇文章是由研究期刊共同提交的,“对可失败论证的推理能力的实证评估,非单调模糊推理和专家系统“[3]。读者可以参考它来解释数据。
    Mental workload (MWL) is an imprecise construct, with distinct definitions and no predominant measurement technique. It can be intuitively seen as the amount of mental activity devoted to a certain task over time. Several approaches have been proposed in the literature for the modelling and assessment of MWL. In this paper, data related to two sets of tasks performed by participants under different conditions is reported. This data was gathered from different sets of questionnaires answered by these participants. These questionnaires were aimed at assessing the features believed by domain experts to influence overall mental workload. In total, 872 records are reported, each representing the answers given by a user after performing a task. On the one hand, collected data might support machine learning researchers interested in using predictive analytics for the assessment of mental workload. On the other hand, data, if exploited by a set of rules/arguments (as in [3]), may serve as knowledge-bases for researchers in the field of knowledge-based systems and automated reasoning. Lastly, data might serve as a source of information for mental workload designers interested in investigating the features reported here for mental workload modelling. This article was co-submitted from a research journal \"An empirical evaluation of the inferential capacity of defeasible argumentation, non-monotonic fuzzy reasoning and expert systems\" [3]. The reader is referred to it for the interpretation of the data.
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