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Quasi-formal deductive system for fuzzy propositional calculus 被引量:8
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作者 WANG GuojunInstitute of Mathematics, Shaanxi Normal University, Xi’an 710062, China 《Chinese Science Bulletin》 SCIE EI CAS 1997年第14期1154-1157,共4页
ELKAN’s report 'The paradoxical success of fuzzy logic' at the 11th IA Annual Conferenceof America in July, 1993 caused quite a great stir in the research field of IA as well as fuzzysystems, fifteen scholars... ELKAN’s report 'The paradoxical success of fuzzy logic' at the 11th IA Annual Conferenceof America in July, 1993 caused quite a great stir in the research field of IA as well as fuzzysystems, fifteen scholars published papers thereupon to refute it and finally Elkan answeredthem with his paper 'The paradoxical controversy over fuzzy logic'. An exclusive analysiscan be found in Prof. Wu Wangming’s paper. It seems from this event that fuzzy proposi- 展开更多
关键词 ΣR-tautology α-mod us ponens α-hypothetical SYLLOGISM quasi-formal deductive system.
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A formal deductive system for fuzzy propositional calculus 被引量:8
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作者 WANG Guojun 《Chinese Science Bulletin》 SCIE 1997年第18期1521-1525,共5页
A great disturbance was raised by the report of Elkan entitled 'The Paradoxical Success of Fuzzy Logic' at the llth Annual Conference on Artificial Intelligence held in the United States in July, 1993. 15 famo... A great disturbance was raised by the report of Elkan entitled 'The Paradoxical Success of Fuzzy Logic' at the llth Annual Conference on Artificial Intelligence held in the United States in July, 1993. 15 famous experts working in artificial intelligence and fuzzy systems refuted the opinion. Elkan then gave another report entitled 'The Paradoxical Controversy over Fuzzy Logic' as a reply to the refutations mentioned above. Prof. Wu gave a detailed analysis on the controversy (see ref. [3]). This shows that there is no rigid logic foundation for fuzzy propositional calculus. In this note we first point out that it is impossible to keep all classical theorems as tautologies in the field of fuzzy propositional calculus. Then we introduce a formal deductive system in fuzzy propositional calculus by giving up certain classical axioms, and the corresponding soundness theorem is proved. 展开更多
关键词 ∑R-tautology α-MP rule α-HS rule algebra of fuzzy formulas formal deductive system■(■) quotient algebra.
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后处理厂与核电厂概率安全评价方法学的比较 被引量:5
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作者 吴中旺 奚树人 《清华大学学报(自然科学版)》 EI CAS CSCD 北大核心 2000年第12期1-3,共3页
为了确保中国动力堆乏燃料后处理中间试验工厂(中试厂 )安全可靠地设计和运行 ,在用确定论方法对其事故进行分析的同时 ,有必要应用概率安全评价 (PSA)方法对中试厂进行安全评价。该文借鉴核电厂 PSA实践经验 ,研究了国际上后处理厂 PS... 为了确保中国动力堆乏燃料后处理中间试验工厂(中试厂 )安全可靠地设计和运行 ,在用确定论方法对其事故进行分析的同时 ,有必要应用概率安全评价 (PSA)方法对中试厂进行安全评价。该文借鉴核电厂 PSA实践经验 ,研究了国际上后处理厂 PSA的应用情况 ,从设计安全基本原则、PSA方法学、可靠性数据、事故辐射后果等方面 ,比较了概率安全评价技术在核电厂与核燃料后处理厂应用中的异同 ,最后确定了后处理厂概率安全评价的具体方法独立的故障树演绎技术 ,并实际应用于中试厂的概率安全评价。结果表明 ,后处理厂比核电厂具有较低的风险和较好的安全性。 展开更多
关键词 后处理厂 核电厂 概率安全评价(PSA) 演绎 归纳
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线性代数教学中的归纳与演绎方法 被引量:8
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作者 王颖 南基洙 《高等数学研究》 2013年第6期46-48,51,共4页
针对线性代数概念多、内容抽象、逻辑性强等特点,介绍归纳和演绎方法在线性代数教学中的应用,并借助具体案例加以说明.
关键词 线性代数 归纳 演绎
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Tree of Fermat-Pramanik Series and Solution of AM +B2 =C2 with Integers Produces a New Series of (C12- B12)=(C22- B22)=(C32- B32)=Others
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作者 Panchanan Pramanik Susmita Pramanik Sabyasachi Sen 《Advances in Pure Mathematics》 2024年第3期160-166,共7页
The Fermat–Pramanik series are like below: .The mathematical principle has been established by factorization principle. The Fermat-Pramanik tree can be grown. It produces branched Fermat-Pramanik series using same pr... The Fermat–Pramanik series are like below: .The mathematical principle has been established by factorization principle. The Fermat-Pramanik tree can be grown. It produces branched Fermat-Pramanik series using same principle making Fermat-Pramanik chain. Branched chain can be propagated at any point of the main chain with indefinite length using factorization principle as follows: Same principle is applicable for integer solutions of A<sup>M</sup>+B<sup>2</sup>=C<sup>2</sup>which produces series of the type . It has been shown that this equation is solvable with N{A, B, C, M}. where , , M=M<sub>1</sub>+M<sub>2</sub> and M<sub>1</sub>>M<sub>2</sub>. Subsequently, it has been shown that using M= M<sub>1</sub>+M<sub>2</sub>+M<sub>3</sub>+... The combinations of Ms should be taken so that the values of both the parts (C<sub>n</sub>+B<sub>n</sub>) and (C<sub>n</sub>-B<sub>n</sub>) should be even or odd for obtaining Z{B,C}. Hence, it has been shown that the Fermat triple can generate a) Fermat-Pramanik multiplate, b) Fermat-Pramanik Branched multiplate and c) Fermat-Pramanik deductive series. All these formalisms are useful for development of new principle of cryptography. . 展开更多
关键词 Fermat Theorem Fermat-Pramanik Tree Solution of AM +B2 =C2 deductive Series Generation of Fermat’s Triode Generation of Fermat Series
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Formal Inferring the Law of Conservation of Energy from Assuming A-Priori-ness of Knowledge in a Formal Axiomatic Epistemology System Sigma 被引量:3
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作者 Vladimir O. Lobovikov 《Journal of Applied Mathematics and Physics》 2021年第5期1011-1040,共30页
The research purpose is invention (construction) of a formal logical inference of the Law of Conservation of Energy within a logically formalized axiomatic epistemology-and-axiology theory Sigma from a precisely defin... The research purpose is invention (construction) of a formal logical inference of the Law of Conservation of Energy within a logically formalized axiomatic epistemology-and-axiology theory Sigma from a precisely defined assumption of a-priori-ness of knowledge. For realizing this aim, the following work has been done: 1) a two-valued algebraic system of formal axiology has been defined precisely and applied to proper-philosophy of physics, namely, to an almost unknown (not-recognized) formal-axiological aspect of the physical law of conservation of energy;2) the formal axiomatic epistemology-and-axiology theory Sigma has been defined precisely and applied to proper-physics for realizing the above-indicated purpose. Thus, a discrete mathematical model of relationship between philosophy of physics and universal epistemology united with formal axiology has been constructed. Results: 1) By accurate computing relevant compositions of evaluation-functions within the discrete mathematical model, it is demonstrated that a formal-axiological analog of the great conservation law of proper physics is a formal-axiological law of two-valued algebra of metaphysics. (A precise algorithmic definition of the unhabitual (not-well-known) notion “formal-axiological law of algebra of metaphysics” is given.) 2) The hitherto never published significantly new nontrivial scientific result of investigation presented in this article is a formal logical inference of the law of conservation of energy within the formal axiomatic theory Sigma from conjunction of the formal-axiological analog of the law of conservation of energy and the assumption of a-priori-ness of knowledge. 展开更多
关键词 Law of Conservation of Energy law of Two Valued Algebra of Formal Axiology Formal Axiomatic Epistemology System Sigma Apriori Knowledge Formal deductive Inference
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演绎的面向对象数据库(DOOD)研究 被引量:2
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作者 施伯乐 朱扬勇 刘宏亮 《高技术通讯》 EI CAS CSCD 1998年第5期30-35,共6页
介绍了在演绎库(KBASE-P)与对象库(FOODB)基础上实现的一个演绎的面向对象数据库系统(DOOD)。系统支持对象的递归查询等操作,还引入了IODB与DODB等概念,用于演绎对象的生成。系统采用O-DATALO... 介绍了在演绎库(KBASE-P)与对象库(FOODB)基础上实现的一个演绎的面向对象数据库系统(DOOD)。系统支持对象的递归查询等操作,还引入了IODB与DODB等概念,用于演绎对象的生成。系统采用O-DATALOG语言,用于实现对象间的演绎,并继承了演绎库的优化策略。 展开更多
关键词 数据库 演绎 面向对象 DOOD
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Closed World Assumption for Disjunctive Reasoning
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作者 王克文 周立柱 《Journal of Computer Science & Technology》 SCIE EI CSCD 2001年第4期381-387,共7页
In this paper, the relationship between argumentation and closed world reasoning for disjunctive information is studied. In particular, the authors propose a simple and intuitive generalization of the closed world ass... In this paper, the relationship between argumentation and closed world reasoning for disjunctive information is studied. In particular, the authors propose a simple and intuitive generalization of the closed world assumption (CWA) for general disjunctive deductive databases (with default negation). This semantics, called DCWA, allows a natural argumentation-based interpretation and can be used to represent reasoning for disjunctive information. We compare DCWA with GCWA and prove that DCWA extends Minker's GCWA to the class of disjunctive databases with default negation. Also we compare our semantics with some related approaches. In addition, the computational complexity of DCWA is investigated. 展开更多
关键词 deductive databases closed world assumption SEMANTICS ARGUMENTATION
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An Analysis of Benefits and Drawbacks of PPP in Grammar Teaching
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作者 孙静蔚 胡家英 《海外英语》 2018年第3期215-217,共3页
Class as the basic of teaching provides language learners knowledge and ways to improve their abilities. Therefore,teaching methods in class can be an affective factor. Through observing the video of foreign language ... Class as the basic of teaching provides language learners knowledge and ways to improve their abilities. Therefore,teaching methods in class can be an affective factor. Through observing the video of foreign language teachers using traditional PPP grammar teaching model, analyzing the advantages and drawbacks of PPP model and providing recommendations of PPP model, teachers can be inspired and improve their teaching method. This illustrates positive factors for English language teaching. 展开更多
关键词 PPP models teacher-centered class English grammar learning inductive and deductive approach
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Presenting New Grammar
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作者 吴彩灵 王熙 《海外英语》 2015年第14期240-242,共3页
More and more researchers have now agreed upon the necessity of teaching grammar, but it still remains controversial ashow to teach the forms, with the central consideration of not to harm the meaning-focused communic... More and more researchers have now agreed upon the necessity of teaching grammar, but it still remains controversial ashow to teach the forms, with the central consideration of not to harm the meaning-focused communicative teaching method. In thisessay, one of the issues in grammar teaching will be discussed as how to present new grammar to learners, through evaluating andmodifying a particular presentation activity in a grammar-teaching textbook. 展开更多
关键词 GRAMMAR TEACHING INPUT deductive INSTRUCTION feedb
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Query Optimization for Deductive Databases
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作者 周傲英 施伯乐 《Journal of Computer Science & Technology》 SCIE EI CSCD 1995年第2期134-148,共15页
A systematic, efficient compilation method for query evaluation of DeductiveDatabases (DeDB) is proposed in this paper. In order to eliminate redundancyand to minimize the potentially relevant facts, which are two key... A systematic, efficient compilation method for query evaluation of DeductiveDatabases (DeDB) is proposed in this paper. In order to eliminate redundancyand to minimize the potentially relevant facts, which are two key issues to theefficiency of a DeDB, the compilation process is decomposed into two phases.The first is the pre-compilation phase, which is responsible for the minimiza-tion of the potentially relevant facts. The second, which we refer to as thegeneral compilation phase, is responsible for the elimination of redundancy.The rule/goal graph devised by J. D. Ullman is appropriately extended andused as a uniform formalism. Two general algorithms corresponding to the twophases respectively are described intuitively and formally 展开更多
关键词 deductive database query evaluation query optimization
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Techniques of Integrating Datalogwith PROLOG
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作者 朱扬勇 郭德培 施伯乐 《Journal of Computer Science & Technology》 SCIE EI CSCD 1997年第6期520-531,共12页
Since extending DATALOG to a general-purpose programming language seems very difficult, many projects have embedded a DATALOG-based query language into a procedural host language, such as CORAL, Glue-Nail, etc.Althoug... Since extending DATALOG to a general-purpose programming language seems very difficult, many projects have embedded a DATALOG-based query language into a procedural host language, such as CORAL, Glue-Nail, etc.Although DATALOG can be considered as function-free PROLOG, they are very different in many aspects. For instance, DATALOG is declarative while PROLOG isn't, DATALoG takes 'a-set-at-atime' mode of evaluation but PROLOG takes 'a-tuple-at-a-time' one, DATALOG is only a query language whereas PROLOG is a general-purpose programming language. It is thought that integrating DATALOG with PROLOG may take their advantages. KBASEP is such a language. It uses KBASE as the query language and PROLOG as its procedural host language, where KBASE is an extension of DATALOG with negation and function. This paper introduces the integration techniques used in KBASE-P system. 展开更多
关键词 KNOWLEDGE-BASE deductive database logic program
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Magic Sets Revisited
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作者 陈阳军 《Journal of Computer Science & Technology》 SCIE EI CSCD 1997年第4期346-365,共20页
This paper distinguishes among three kinds of linear recursions: canonical strongly linear recursion (CSLR), non-interdependent linear recursion (NILR) and interdependent linear recurstion (ILR) and presents an optima... This paper distinguishes among three kinds of linear recursions: canonical strongly linear recursion (CSLR), non-interdependent linear recursion (NILR) and interdependent linear recurstion (ILR) and presents an optimal algorithm for each. First, for the CSLRs, the magic-set method is refined in such a way that queries can be evaluated efficiently. Then, for the NILRS and ILRs, the concept of query dependency graphs is introduced to partition the rules of a program into a set of CSLRs and the computation is elaborated so that the oplimization for CSLRs can also be applied. 展开更多
关键词 deductive database recursive query magic set query graph bottom-up evaluation.
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Functional Orientation and Practice of Inductive and Deductive Approaches to Grammar Teaching in EFL
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作者 邵阳 《英语广场(学术研究)》 2011年第Z6期57-58,共2页
To solve the ambiguous understanding of Grammar Teaching position,based on explicit grammatical knowledge,this paper discusses the grammar position in EFL,compares both its pros and cons between deductive and inductiv... To solve the ambiguous understanding of Grammar Teaching position,based on explicit grammatical knowledge,this paper discusses the grammar position in EFL,compares both its pros and cons between deductive and inductive approaches,and indicates that grammar teaching by either approach alone has disadvantages,should adopt a combination technique. 展开更多
关键词 GRAMMAR teaching deductive APPROACH INDUCTIVE APPROACH explicit GRAMMATICAL knowledge
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Qualitative and Quantitative Research in Second Language Teaching and Learning
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作者 Zhang Hui\ \ 《首都师范大学学报(社会科学版)》 2000年第S2期121-124,共4页
Qualitative and quantitative researches are two major approaches in the study of second language learning and teaching, each representing a special research method in the anthropological studies. Qualitative approach ... Qualitative and quantitative researches are two major approaches in the study of second language learning and teaching, each representing a special research method in the anthropological studies. Qualitative approach moves from data to a hypothesis while the quantitative approach begins with a postulate and ends in the testing of the postulate with data, as a result, it is reasonable to take the qualitative approach as an inductive method and the quantitative approach as a deductive method. These two approaches both have their advantages and disadvantages. While doing qualitative research the researcher should bear in mind the different background of the students tested. On the other hand, the researcher using the quantitative method often suffers the limitation imposed upon him or her by the predefined requirement of the experiment. Only an apt and suitable coordination of the two approaches can make the study of second language teaching and learning successful and fruitful.\; 展开更多
关键词 qualitative RESEARCH QUANTITATIVE RESEARCH DATA INDUCTIVE deductive
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Class Based Contextual Logic for DOOD
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作者 JoseK.Raphel SiuCheungHui 《Journal of Computer Science & Technology》 SCIE EI CSCD 1996年第2期161-170,共10页
Contextual logic provides a mechanism to reason about modules. In this paper, this theory of modules is extended to a context theory of classes where class is in the true spirit of object-oriented databases. The logic... Contextual logic provides a mechanism to reason about modules. In this paper, this theory of modules is extended to a context theory of classes where class is in the true spirit of object-oriented databases. The logic, referred to as CLOG,is class-based. CLOG supports class, object identity, multiple role of object,monotonic and non-monotonic inheritance of data a-nd method, method factor-ing, views, derived and query classes. Views and derived classes are queries in themselves- Objects are pure data terms representing the ground instances of facts in the class. 'Object identity is a first class term in the logic. Inheritance is handled through delegation. 展开更多
关键词 Object-oriented logic contextual logic class-based deduction deductive object-oriented databases class semantics
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DPAL: Deductive Language for Embroidery Pattern Assembling
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作者 孟波 郭磊 陈世福 《Journal of Computer Science & Technology》 SCIE EI CSCD 2000年第6期625-628,共4页
This paper describes the design and implementation of DPA: a deductive language for embroidery pattern assembling. DPAL is similar to SQL and generates the embroidery pattern by matching the operators of space relatio... This paper describes the design and implementation of DPA: a deductive language for embroidery pattern assembling. DPAL is similar to SQL and generates the embroidery pattern by matching the operators of space relation with the rule in rule database. It improves the production efficiency of embroidery drafts and increases the variety of colors and patterns. 展开更多
关键词 deductive language embroidery pattern operators of space rela- tion
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Using An Inductive Approach to Teach Grammar to Chinese Adult Learners of English
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作者 王中锋 李爱萍 《疯狂英语(教师版)》 2007年第1期27-33,47,共8页
关键词 INDUCTIVE APPROACH deductive APPROACH GRAMMAR teaching CHINESE adult LEARNERS of ENGLISH
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Characterization of Holmes in The Adventure of Speckled Band
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作者 陈小玲 《海外英语》 2015年第2期211-213,共3页
Sherlock Holmes is the fictional creation of Sir Arthur Conan Doyle. In The Adventure of the Speckled Band, Sir Arthur Conan Doyle has succeeded in creating the image of Sherlock Holmes. He is not only an excellent de... Sherlock Holmes is the fictional creation of Sir Arthur Conan Doyle. In The Adventure of the Speckled Band, Sir Arthur Conan Doyle has succeeded in creating the image of Sherlock Holmes. He is not only an excellent detective who is skillful in astute observation and deductive reasoning, but also the symbol of justice and wisdom. 展开更多
关键词 HOLMES KINDNESS observation deductive REASONING JUSTICE
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ENTITY-ROLES MODEL AND OBJECT-ORIENTED KNOWLEDGE/DATA BASES
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作者 Pan Jiuhui Liu Zhimin Wang Yunyi(Department of Computer Science, Central South University of Technology, Changsha, 410083, China) 《Journal of Central South University》 SCIE EI CAS 1994年第1期74-77,共4页
A Model, called 'Entity-Roles' is proposed in this paper in which the world of Interest is viewed as some mathematical structure. With respect to this structure, a First order (three-valued) Logic Language is ... A Model, called 'Entity-Roles' is proposed in this paper in which the world of Interest is viewed as some mathematical structure. With respect to this structure, a First order (three-valued) Logic Language is constructured.Any world to be modelled can be logically specified in this Language. The integrity constraints on the database and the deducing rules within the Database world are derived from the proper axioms of the world being modelled. 展开更多
关键词 EXPERT systems data model OBJECT-ORIENTATION database logic deductive QUERY
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