xml的運(yùn)用---知識(shí)管理工具-資料下載頁(yè)
2025-01-14 02:25本頁(yè)面
【正文】 describe concepts in the domain ? A class can have subclasses that represent concepts that are more specific than the superclass ? An ontology together with a set of individual instances of classes constitutes a knowledge base ? Ontology ends and the knowledge base begins Components of an ontology ? Concepts ? Taxonomy of the concepts ? Relations among concepts ? Formal specification of the concepts and relations Ontology has: ? A mon vocabulary ? An explicit representation of thing (conceptualization) usually left implicit behind a system ? An explicit representation of a shared understanding of the target world Ontology Engineering Ontology Engineering: Defining terms in the domain and relations among them – Defining concepts in the domain (classes) – Arranging the concepts in a hierarchy (subclasssuperclass hierarchy) (taxonomy) – Defining which attributes and properties (slots) classes can have and constraints on their values – Defining individuals and filling in slot values Ontology ? What is ? Ontology? ? –利用定義好的字彙來(lái)描述目前已存在之實(shí)體 –以樹(shù)狀結(jié)構(gòu)勾畫出實(shí)體間彼此之關(guān)係 –進(jìn)而建構(gòu)專業(yè)領(lǐng)域中可解釋並利用之知識(shí)架構(gòu) –提供一致性的相關(guān) ?詞彙? 解釋與定義 –資訊呈現(xiàn)的單一化 –資料分類與註解的標(biāo)準(zhǔn)化 ontology Concept Relation Instances subConceptOf relation domain instance domain relation domain concept ? Research Project ? Full Professor(AcademicStaff) ? PhDStudent ontology Relation ? worksAtProject ? Supervises ? Supervisor ontology Instances ? Rudi – Concept: FullProfessor – Relation 1. Supervises: York 2. Name: Rudi Studer ? York – Concept: PhDStudent – Relation 1. worksAtProject: OnTo Knowledge 2. Name: York Sure 3. Supervisor: Rudi ? OnToKnowledge – Concept: ResearchProject – Relation : OnToKnowledge ontology Rudi York OnToKnowledge supervises supervisor worksAtProject worksAtProject ontology Gene Ontology ? Gene Ontology 的形成 – Life Science is ? Knowledge base? instead of ? Axiom base? ? Knowledge of the biological role of proteins in one anism can often be transferred to other anisms. – 當(dāng)資料累積至一定程度 , 就必須以 ? Ontology?的方式來(lái)呈現(xiàn) – 例如 : 新發(fā)現(xiàn) Protein 或 DNA 時(shí) , 會(huì)利用已知的資料來(lái)推論其功能 Gene Ontology ? Gene Ontology 三大主體結(jié)構(gòu) – Biological process 生物過(guò)程 – Molecular function 分子功能 – Cellular ponent 細(xì)胞元件 Gene Ontology Cellular Component Biological Process Molecular Function 基因或蛋白質(zhì) Upgrading the Application of XML in Knowledge Organization ? HTML: Web Content Display ? XML: – Data Interchange – Web Content Representation ? Elements for the Object Attributes ? Elements for the Object Attributes with Structure ? Elements for the Object Attributes with Structure and Semantic meaning 演講完畢，謝謝觀看！
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