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- The isopotential (surface) of all data will automatically take shape a concept hierarchy. 数据场的场强函数有衍生场强函数和空间数据场强函数两种。
- A concept hierarchy model is proposed to express differ ent status in different layers for the same concept. 为进行查询变换，提出了概念层次模型以有效地表达概念在不同抽象层的不同表现形式；
- In Data mining with Attribute-Oriented Generalization(AOG), attribute reduction and concept generalization could not part from concept hierarchy. 摘要 在面向属性归纳（AOG）的数据挖掘中，属性归约及概念归纳都离不开概念层次。
- Concept hierarchy is commonly transcendent, the generalization could not perform for new concept which did not presence in concept hierarchy. 而概念层次一般都是先验的，当出现概念层次中没有的新的概念时，无法进行归纳。
- Narrower concepts are typically rendered as children in a concept hierarchy (tree). 上位概念通常在概念等级(树)中表示子概念。
- Improved from FP-Growth algorithm,MAGO-FP,a highly efficient data mining technique for discovering the multilevel association rules from biological data based on the concept hierarchy of Gene Ontology(GO)has been proposed. 提出的MAGO-FP算法,使用Gene Ontology(GO)的概念分层结构,通过对FP-Growth算法的扩展,具有一定的性能优势。
- Thesaurus concept hierarchy collaborative filtering algorithm improves search efficiency and quality of recommendatory results significantly which is proved by elementary test and analysis. 经过初步的测试分析，主题词概念分层协同过滤推荐算法可以显著的提高查询效率和推荐结果的质量。
- concept hierarchy classification 概念层次分类
- Successful utilization of domain knowledge in this phase requires extending basic data mining algorithms to deal with relational data to concept hierarchies. 在模式发现阶段领域知识的成功应用还需要数据挖掘算法来执行从关系数据到概念层次的处理。
- A New Algorithm for the Data Mining of Concept Hierarchy Based on Sampling 一种基于取样的概念层次数据挖掘新算法
- Formalization of the inheritance relations based on ontology is presented and UML is extended to describe them visually.Furthermore,they are applied to decide some errors in concept hierarchies. 为了严格、准确描述这些语义关联,基于本体研究了它们的形式化描述,同时扩展UML,可视化地表示它们,并在此基础上,应用它们判定知识库中的某些错误。
- This concept is at the very core of her theory. 这个概念是她理论的核心。
- It's not as if he was very important in the company hierarchy. 他在公司的领导层中似乎无多大权力。
- I can not understand the so abstract concept. 我无法理解如此抽象的观念。
- One who occupies a position of authority in a religious hierarchy. 祭祀长，高僧，大主教掌握高级职位或有权威的宗教领袖
- There is a hierarchy in the classification of all living creatures. 一切生物均可按等级分类。
- Who originated the concept of stereo sound? 立体声是谁发明的？
- Research and Implementation of A Data Mining Algorithm Based on Concept Hierarchy Tree 基于概念层次树的数据挖掘算法的研究与实现
- He has taken a step up in the hierarchy. 他的等级已升了一级。
- Application of Concept Hierarchies in Census Data 概念分层在人口普查数据中的应用
