搜索到424926篇“ KNOWLEDGE“的相关文章
知识:起源、定义及特性被引量:1
2014年
知识是人类的精神活动整合生成的产物。精神活动是人类认识客观世界的行为,其结果是创造出知识。人的认识和人创造的知识都是进化的产物,是与人类文化的起源紧紧联系在一起的。
李喜先
关键词:知识知识创新
Knowledge of Blood Transfusion among Junior Medical Doctors in Kenya
2025年
Background: Blood transfusion (BT) is crucial to the provision of modern health care. However, blood is scarce and costly, and its use is associated with risks. Therefore, the medical professionals who handle it should have adequate knowledge to ensure rational and safe utilization. The objective of the study was to determine the level of BT knowledge among junior medical doctors in Kenya. Methodology: A cross-sectional study was conducted among junior medical doctors working in Western Kenya. Data was collected using questionnaires from August 2021 to March 2022, and analysis was done by way of descriptive and inferential statistics. A p Results: A total of 150 medical doctors participated in the study. Males comprised 60% (n = 90), and the mean age of the participants was 29.9 (SD 3.6) with a range of 25 - 45 years. The mean knowledge score was 54.1% ± 16.4% and was associated with orientation (AOR = 3.157, 95% CI = 1.194 - 8.337). Conclusion: Blood transfusion knowledge among the doctors was suboptimal and was associated with pre-internship induction. There is a need for additional education in BT during all phases of medical training and practice, including orientation for medical interns.
Japheth C. KipkuleiGeoffrey K. MaiyohRichard B. O. OkeroTeresa LotodoHellen JepngetichNathan Buziba
时序知识图谱构建研究综述被引量:1
2025年
知识图谱作为连接数据、知识和智能的桥梁,已被广泛应用于辅助搜索、智能推荐、问答系统、自然语言处理等多个领域。然而,随着应用场景的不断拓展,传统静态知识图谱逐渐暴露出在处理动态知识方面的局限性。时序知识图谱的出现弥补了这一缺陷,它将时间信息融入图谱结构,能够更准确地表示知识的动态变化。对时序知识图谱的构建进行了全面的研究,介绍了时序知识图谱的概念,明确了其在处理动态知识时的价值。解析了时序知识图谱构建流程,将其核心过程划分为知识抽取、知识融合和知识计算三大环节。对每个阶段进行了梳理,明确了任务定义,总结了研究现状,并探讨了大语言模型在这些任务中的应用。在知识抽取阶段,重点关注命名实体识别、关系抽取和时间信息抽取;在知识融合阶段,探讨了实体对齐和实体链接;在知识计算阶段,聚焦于知识推理。深入分析了每个阶段面临的挑战,并针对特有挑战展望了未来的研究方向。
陆佳民张晶冯钧安琪
关键词:知识抽取知识融合知识推理
AIGC时代知识服务领域发展趋势
2025年
随着生成式人工智能(AIGC)时代的到来,知识服务领域正面临前所未有的变革与重塑。文章首先厘清AIGC与传统知识服务之间的关联与界限,随后从知识传递、知识创新和知识应用三个层面探讨AIGC时代知识服务的发展趋势,包括知识服务模式的创新、学术研究的赋能以及知识服务实践的转型,最后剖析了AIGC给知识服务领域带来的创新影响,并对未来发展前景进行前瞻性思考。
单旭张成昱李骐安张璐
关键词:知识服务知识传递知识创新知识应用
基于教育家精神的教师学科知识二元性建构:生成逻辑、核心要义与价值意蕴
2025年
基于教育家精神建构的教师学科知识二元性这一创新概念,主张教师应同时具有科目学科知识与学术学科知识。教师学科知识二元性概念的生成,孕育于学科教育、学科教师教育实践的二元性,博采于社会实在论的知识观,赓续于党对教师具有扎实学识的要求,继承于中华传统文化中教师作为“通儒”的学者形象。教师的科目学科知识与学术学科知识间存在辩证统一关系,体现在二者于知识子范畴、知识基础上的联系性,于知识难度、取向、层级上的差异性,以及教师学术学科知识得以促进其科目学科知识深化、结构化与系统化的交互性。教师具备二元学科知识之于教育家精神的践履具有重要价值,彰显于教师使命的践行、师德素养的修炼、教学效能的提升、专业发展动力的激发、教师情感的涵育以及教师信念的树立等六个方面。
朱旭东刘乔卉
关键词:教育家精神学科知识教师知识
融合超图理论的语义知识图谱知识表示研究
2025年
[目的/意义]现有语义知识图谱三元组的知识表示方式对复杂知识表示能力较弱,文章在现有知识图谱语义标准基础上,探索提高知识图谱对复杂知识的表示能力以及知识聚合能力的途径。[方法/过程]分析图、超图、知识图谱以及知识超图之间的联系,探讨知识表示领域,知识图谱的局限性以及融合超图理论后知识超图在复杂知识表示能力方面的优势。[结果/结论]提出知识超图模型,根据该模型讨论其对复杂知识的表示方式:通过加入空节点或具有实际含义实体的方式,描述实体在某一时刻的属性或状态;将超边具象化为特殊的超边实体,为其连接的实体提供语义环境。足够多的空节点或超边实体即可描述实体或关系从产生到现在(或消亡)的全部状态,从而展现动态、复杂的现实世界。
宋雪雁张伟民张祥青
关键词:知识表示
Mothers’ Knowledge and Practices Regarding Exclusive Breastfeeding in the Central African Republic
2025年
Introduction: Breastfeeding is the best way to provide ideal nutrition for optimal infant growth and development. Objectives: The aim of our work was to assess the knowledge, attitudes and practices of mothers of children aged 0 - 24 months on exclusive breastfeeding in the Central African Republic. Methods: This was a cross-sectional, descriptive and analytical study conducted from September 15 to October 15, 2024 among mothers of infants aged 0 to 24 months. Sociodemographic, obstetric and breastfeeding-related data were collected through individual interviews conducted during sensitizations on good feeding practices organized by the Tina Touadera Foundation. The chi2 test was used to test for relationships between variables, and the p significance level was set at 0.05. Results: The average age of the mothers surveyed was 27.67 years. 65.69% (n = 247) of mothers lived in urban areas and 55.85% (n = 210) were Muslim. 56.38% (n = 212) were living common-law and 34.04% (n = 128) were poor. Secondary-school mothers (44.42%, n = 167) and housewives (53.72%, n = 202) were in the majority. Exclusive breastfeeding (EBF) was correctly defined by 79.26% (n = 298) of mothers and actually practised in 24.20% (n = 91) of cases. The main source of information was a health professional in 75.36% (n = 304) of cases. Among the 285 mothers who practised mixed breastfeeding, lack of time (33.33%) was the main reason. They acknowledged having given water (100%), corn porridge (75.09%) and/or artificial milk (24.91%) before the first 6 months of life. The average time for introducing water was 2.2 months, and for porridge/formula 2.79 months. More than half the mothers (55.05%) said they did not know their infants’ weaning age. Factors positively influencing the use of EBF were age under 29, residence in an urban area, primiparity, having been informed about AME by a health professional, and being a housewife or shopkeeper (p Conclusion: Mothers’ level of knowledge was heterogeneous but insufficient overall. An effective syste
Hilda Josephe Touadera MongboaBrice Olivier Bogning MejiozemJean Chrysostome Gody
关键词:KNOWLEDGEATTITUDESPRACTICESCAR
A Maritime Document Knowledge Graph Construction Method Based on Conceptual Proximity Relations
2025年
The cost and strict input format requirements of GraphRAG make it less efficient for processing large documents. This paper proposes an alternative approach for constructing a knowledge graph (KG) from a PDF document with a focus on simplicity and cost-effectiveness. The process involves splitting the document into chunks, extracting concepts within each chunk using a large language model (LLM), and building relationships based on the proximity of concepts in the same chunk. Unlike traditional named entity recognition (NER), which identifies entities like “Shanghai”, the proposed method identifies concepts, such as “Convenient transportation in Shanghai” which is found to be more meaningful for KG construction. Each edge in the KG represents a relationship between concepts occurring in the same text chunk. The process is computationally inexpensive, leveraging locally set up tools like Mistral 7B openorca instruct and Ollama for model inference, ensuring the entire graph generation process is cost-free. A method of assigning weights to relationships, grouping similar pairs, and summarizing multiple relationships into a single edge with associated weight and relation details is introduced. Additionally, node degrees and communities are calculated for node sizing and coloring. This approach offers a scalable, cost-effective solution for generating meaningful knowledge graphs from large documents, achieving results comparable to GraphRAG while maintaining accessibility for personal machines.
Yiwen LinTao YangYuqi ShaoMeng YuanPinghua HuChen Li
Knowledge Modeling and Institutional Memory at the University of Cape Coast: Examining Technology as a Mediator and Leadership Styles as a Moderator in Enhancing Administrative Efficiency
2025年
The integration of digital tools and effective knowledge management practices is critical for enhancing administrative efficiency and institutional continuity in higher education. This study investigates the relationships between knowledge modeling, institutional memory, leadership styles, technology, and administrative efficiency at the University of Cape Coast (UCC). The study sought to identify the challenges and opportunities in integrating digital tools into administrative processes and to provide actionable recommendations for improvement. A mixed-methods research design was employed, combining quantitative analysis using Partial Least Squares Structural Equation Modeling (PLS-SEM) with qualitative thematic analysis of interviews. The findings revealed key challenges, including resistance to change, fragmented knowledge repositories, and inadequate funding, alongside opportunities such as centralized knowledge systems, cost-effective open-source tools, and capacity-building initiatives. The study highlights the importance of strategic leadership, robust policies, and investments in digital infrastructure to enhance administrative practices. Policy implications include the need for clear digital transformation guidelines and leadership training to foster innovation and collaboration. Recommendations include investing in scalable digital tools, implementing comprehensive capacity-building programs, and promoting stakeholder engagement to drive successful digital integration. These insights provide a roadmap for UCC and similar institutions seeking to optimize administrative efficiency through digital transformation.
Harriette Nusrat ManuEleanor Afua OnyameEunice Amoako MensahSarah AnnimSayibu Abdul-Gafaar
基于知识图谱技术的计算机网络链路漏洞检测研究
2025年
计算机网络链路的漏洞信息具有类型复杂、来源广及数量庞大等特点,导致此类漏洞的威胁判断尤为困难。知识图谱技术具有数据整合及统一表示特性,可以统一结构化整合呈现复杂特点的漏洞信息,为此,文中提出基于知识图谱技术的计算机网络链路漏洞检测方法。收集计算机网络链路的各种数据源漏洞信息,抽取其中的漏洞实体知识与关系知识,构建网络链路漏洞知识图谱。运用卷积神经网络模型学习该知识图谱中的漏洞知识,通过训练后的模型实现网络链路漏洞检测。结果显示,该方法可针对包含不同类型、数量链路漏洞的工况,实现漏洞知识图谱的构建,并且漏洞威胁检测精度始终保持在90%以上。因此,说明所研究检测方法的检测结果精准可靠,可为计算机网络链路数据安全传输提供保障。
辛瑞雯高云
关键词:知识图谱计算机网络知识抽取

相关作者

徐升华
作品数:109被引量:746H指数:14
供职机构:江西财经大学信息管理学院
研究主题:知识转移 影响因素 知识共享 虚拟企业 农产品供应链
焦玉英
作品数:107被引量:1,463H指数:23
供职机构:武汉大学信息管理学院
研究主题:网络环境 数字图书馆 信息服务 企业 信息检索
贺西安
作品数:52被引量:171H指数:8
供职机构:中国科学院新疆生态与地理研究所
研究主题:统计分析 知识创新 图书馆 SCI论文 知识经济
谢华玲
作品数:25被引量:161H指数:8
供职机构:中国科学院文献情报中心
研究主题:种业发展 种业 KNOWLEDGE ISI WEB_OF_KNOWLEDGE
李娜
作品数:207被引量:722H指数:12
供职机构:台州学院
研究主题:应用气象 多糖 小区广播 青钱柳 气象短信