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(weak) R-mingle: toward a fuzzy-relevance logic
양은석 한국논리학회 2007 論理硏究 Vol.10 No.2
This paper investigates the relevance system R-mingle (RM) as a fuzzy-relevance logic. It shows that RM is fuzzy in Cintula's sense, i.e., RM is complete with respect to linearly ordered L-matrices (or L-algebras). More exactly, we first introduce RM and its weak versions wwRM and wRM. We next provide algebraic and matrix completeness results for them.
Standard completeness results for some neighbors of R-mingle
양은석 한국논리학회 2008 論理硏究 Vol.11 No.2
In this paper we deal with new standard completeness proofs of some systems introduced by Metcalfe and Montagna in [10]. For this, this paper investigates several fuzzy-relevance logics, which can be regarded as neighbors of the R of Relevance with mingle (RM). First, the monoidal uninorm idempotence logic MUIL, which is intended to cope with the tautologies of left-continuous conjunctive idempotent uninorms and their residua, and some schematic extensions of it are introduced as neighbors of RM. The algebraic structures corresponding to them are defined, and standard completeness, completeness on the real unit interval [0, 1], results for them are provided.
Uninorm logic: toward a fuzzy-relevance logic(2)
양은석 한국논리학회 2008 論理硏究 Vol.11 No.1
This paper first investigates several uninorm logics (introduced by Metcalfe and Montagna in [8]) as fuzzy-relevance logics. We first show that the uninorm logic UL and its extensions IUL, UML, and IUML are fuzzy-relevant; fuzzy in Cintula´s sense, i.e., the logic L is complete with respect to linearly ordered L-matrices; and relevant in the weak sense that φ→ψ is a theorem only if either (i) φ and ψ share a sentential variable or constant, or (ii) both ∼φ and ψ are theorems. We next expand these systems to those with △.
Non-associative fuzzy-relevance logics: strong t-associative monoidal uninorm logics
양은석 한국논리학회 2009 論理硏究 Vol.12 No.1
This paper investigates generalizations of weakening-free uninorm logics not assuming associativity of intensional conjunction (so called fusion) &, as non-associative fuzzy-relevance logics. First, the strong t-associative monoidal uninorm logic StAMUL and its schematic extensions are introduced as non-associative propositional fuzzy-relevance logics. (Non-associativity here means that, differently from classical logic, & is no longer associative.) Then the algebraic structures corresponding to the systems are defined, and algebraic completeness results for them are provided. Next, predicate calculi corresponding to the propositional systems introduced here are considered.
양은석 한국논리학회 2015 論理硏究 Vol.18 No.3
This paper deals with Routley-Meyer semantics for two versions of R of Relevance. For this, first, we introduce two systems Rt, RT and their corresponding algebraic semantics. We next consider Routley-Meyer semantics for these systems.
Algebraic Routley-Meyer-style semantics for the fuzzy logic MTL
양은석 한국논리학회 2018 論理硏究 Vol.21 No.3
This paper deals with Routley-Meyer-style semantics, which will be called algebraic Routley-Meyer-style semantics, for the fuzzy logic system MTL. First, we recall the monoidal t-norm logic MTL and its algebraic semantics. We next introduce algebraic Routley-Meyer-style semantics for it, and also connect this semantics with algebraic semantics.
Algebraic Kripke-Style Semantics for Weakly Associative Fuzzy Logics
양은석 한국논리학회 2018 論理硏究 Vol.21 No.2
This paper deals with Kripke-style semantics, which will be called algebraic Kripke-style semantics, for weakly associative fuzzy logics. First, we recall algebraic semantics for weakly associative logics. W next introduce algebraic Kripke-style semantics, and also connect them with algebraic semantics.
Fuzzy R Systems and Algebraic Routley-Meyer Semantics
양은석 한국논리학회 2022 論理硏究 Vol.25 No.3
Here algebraic Routley-Meyer semantics is addressed for two fuzzy versions of the logic of relevant implication R. To this end, two versions Rt and RT of R and their fuzzy extensions FRt and FRT, respectively, are first discussed together with their algebraic semantics. Next algebraic Routley-Meyer semantics for these two fuzzy extensions is introduced. Finally, it is verified that these logics are sound and complete over the semantics.
양은석,서창원 대한산업공학회 2015 대한산업공학회 추계학술대회논문집 Vol.2015 No.11
고객 만족 및 품질인식 측정도구인 Kano모델은 신제품개발 프로세스 분야에서 많은 연구가 진행되었으나, 품질의 동태성에 대한 연구는 초기단계에 머물러 있다. 본 연구의 목적은 모바일&ICT 기술의 발달로 빠르게 확산되고 있는 e-러닝 사례를 통해 Kano의 매력적 품질 이론에서 주장한 품질의 동태성을 검증하는 것이다. 이를 위해 3년 전에 진행한 Kano 설문과 동일한 구성으로 설문을 진행하여 e-러닝 품질속성에 대한 3년 간 변화를 비교분석하였다. 본 연구의 분석 방법은 크게 세 가지로 구성된다. 첫째 품질 속성 분류를 통하여 품질특성의 변화를 관찰하였다. 둘째, 고객만족지수(SI)와 고객불만족지수(DI)를 산출하여 유의한 변화가 나타났는지 확인하였다. 셋째, 3년 전과 현재의 품질특성이 길게 나타난 속성들에 대해 범주강도 분석을 실시하였다. 연구 결과 Kano가 TV 리모컨 사례를 통해 주장한 품질의 동태성의 상당부분이 관찰되었다. 추가적으로 품질 속성마다 변화의 폭이 다름을 발견하였다. 본 연구는 고객만족경영을 추구하는 기업게에 고객의 품질 인식 변화를 추적 및 예측에 기여하며, 이에 따라 신제품 개발 분야에 유용한 정보를 제공할 것으로 기대된다.