• 제목/요약/키워드: random iterative algorithm

검색결과 47건 처리시간 0.028초

FUZZY NONLINEAR RANDOM VARIATIONAL INCLUSION PROBLEMS INVOLVING ORDERED RME-MULTIVALUED MAPPING IN BANACH SPACES

  • Kim, Jong Kyu;Salahuddin, Salahuddin
    • East Asian mathematical journal
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    • 제34권1호
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    • pp.47-58
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    • 2018
  • In this paper, we consider a fuzzy nonlinear random variational inclusion problems involving ordered RME-multivalued mapping in ordered Banach spaces. By using the random relaxed resolvent operator and its properties, we suggest an random iterative algorithm. Finally both the existence of the random solution of the original problem and the convergence of the random iterative sequences generated by random algorithm are proved.

ITERATIVE ALGORITHM FOR RANDOM GENERALIZED NONLINEAR MIXED VARIATIONAL INCLUSIONS WITH RANDOM FUZZY MAPPINGS

  • Faizan Ahmad, Khan;Eid Musallam, Aljohani;Javid, Ali
    • Nonlinear Functional Analysis and Applications
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    • 제27권4호
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    • pp.881-894
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    • 2022
  • In this paper, we consider a class of random generalized nonlinear mixed variational inclusions with random fuzzy mappings and random relaxed cocoercive mappings in real Hilbert spaces. We suggest and analyze an iterative algorithm for finding the approximate solution of this class of inclusions. Further, we discuss the convergence analysis of the iterative algorithm under some appropriate conditions. Our results can be viewed as a refinement and improvement of some known results in the literature.

Random completley generalized nonlinear variational inclusions with non-compact valued random mappings

  • Huang, Nan-Jing;Xiang Long;Cho, Yeol-Je
    • 대한수학회보
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    • 제34권4호
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    • pp.603-615
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    • 1997
  • In this paper, we introduce and study a new class of random completely generalized nonlinear variational inclusions with non-compact valued random mappings and construct some new iterative algorithms. We prove the existence of random solutions for this class of random variational inclusions and the convergence of random iterative sequences generated by the algorithms.

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AN ITERATIVE ALGORITHM FOR EXTENDED GENERALIZED NONLINEAR VARIATIONAL INCLUSIONS FOR RANDOM FUZZY MAPPINGS

  • Dar, A.H.;Sarfaraz, Mohd.;Ahmad, M.K.
    • Korean Journal of Mathematics
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    • 제26권1호
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    • pp.129-141
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    • 2018
  • In this slush pile, we introduce a new kind of variational inclusions problem stated as random extended generalized nonlinear variational inclusions for random fuzzy mappings. We construct an iterative scheme for the this variational inclusion problem and also discuss the existence of random solutions for the problem. Further, we show that the approximate solutions achieved by the generated scheme converge to the required solution of the problem.

A NEW CLASS OF RANDOM COMPLETELY GENERALIZED STRONGLY NONLINEAR QUASI-COMPLEMENTARITY PROBLEMS FOR RANDOM FUZZY MAPPINGS

  • Huang, Nam-Jing
    • Journal of applied mathematics & informatics
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    • 제5권2호
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    • pp.357-372
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    • 1998
  • In this paper we introduce and study a new class of random completely generalized strongly nonlinear quasi -comple- mentarity problems with non-compact valued random fuzzy map-pings and construct some new iterative algorithms for this kind of random fuzzy quasi-complementarity problems. We also prove the existence of random solutions for this class of random fuzzy quasi-complementarity problems and the convergence of random iterative sequences generated by the algorithms.

GENERAL NONLINEAR RANDOM SET-VALUED VARIATIONAL INCLUSION PROBLEMS WITH RANDOM FUZZY MAPPINGS IN BANACH SPACES

  • Balooee, Javad
    • 대한수학회논문집
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    • 제28권2호
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    • pp.243-267
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    • 2013
  • This paper is dedicated to study a new class of general nonlinear random A-maximal $m$-relaxed ${\eta}$-accretive (so called (A, ${\eta}$)-accretive [49]) equations with random relaxed cocoercive mappings and random fuzzy mappings in $q$-uniformly smooth Banach spaces. By utilizing the resolvent operator technique for A-maximal $m$-relaxed ${\eta}$-accretive mappings due to Lan et al. and Chang's lemma [13], some new iterative algorithms with mixed errors for finding the approximate solutions of the aforesaid class of nonlinear random equations are constructed. The convergence analysis of the proposed iterative algorithms under some suitable conditions are also studied.

Tomogram Enhancement using Iterative Error Correction Algorithm

  • Ko, Dae-Sik;Park, Jun-Sok
    • The Journal of the Acoustical Society of Korea
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    • 제15권4E호
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    • pp.9-13
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    • 1996
  • We developed an iterative algorithm which could improve the resolution of reconstructed tomograms having random attenuation patterns and analyzed the limitation of this algorithm. The simple back-and forth propagation algorithm has depth resolution about four wavelengths. An iterative algorithm, based on back-and-forth propagation, can be used to improve the resolution of reconstructed tomograms. We analyzed the wavefield for multi-layered specimen and programmed iterative algorithm using Clanguage. Simulation results show that the images get clearer as the number of iterations increases. Also, unambiguous images can be reconstructed using this algorithm even when the layer separation is only two wavelengths. However, this iteration algorithm comes up with an incorrect solution for the number of projections less than five.

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반복 분할 기반의 적응적 랜덤 테스팅 향상 기법 (Modified Adaptive Random Testing through Iterative Partitioning)

  • 이광규;신승훈;박승규
    • 전자공학회논문지CI
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    • 제45권5호
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    • pp.180-191
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    • 2008
  • 적응적 랜덤 테스팅 (Adaptive Random Testing, ART)은 입력 도메인 내의 오류 패턴을 순수 랜덤 테스팅 (Random Testing, RT)보다 좋은 효율로 찾아내기 위해 고안된 테스트 케이스 선택 알고리즘이다. 대표적인 ART 기법인 거리 기반 ART (Distance-based ART, D-ART)와 제한 영역 기반 ART (Restricted Random Testing, RRT) 둥은 좋은 성능을 보이기는 하지만, 테스트 케이스 선택에 필요한 많은 양의 거리 계산으로 인한 느린 테스트 케이스 생성과 거리 기반 방식의 사용으로 인한 테스트 케이스 분포의 불균일성이라는 단점을 가진다. 반복 분할 기반 ART (ART through Iterative Partitioning, IP-ART)는 입력 도메인을 반복 분할하는 방식을 통해 D-ART와 RRT가 가진 계산 부하를 크게 감소시켰다. 하지만 IP-ART의 경우에도 테스트 케이스 분포 문제는 여전히 존재하여 기법의 확장 적용에 대한 장애 요소로 작용하고 있다. 따라서 본 논문에서는 이와 같은 IP-ART의 단점 완화 및 성능 개선을 위한 방법을 제안하고, 실험을 통해 평균 9% 정도의 성능 향상을 확인하였다.

입력 도메인 확장을 이용한 반복 분할 기반의 적응적 랜덤 테스팅 기법 (Adaptive Random Testing through Iterative Partitioning with Enlarged Input Domain)

  • 신승훈;박승규
    • 정보처리학회논문지D
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    • 제15D권4호
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    • pp.531-540
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    • 2008
  • 적응적 랜덤 테스팅 (Adaptive Random Testing, ART)은 입력 도메인 내에 테스트 케이스를 넓고 고르게 분산시키는 방법을 통해 입력 도메인 내에 존재하는 오류 패턴을 순수 랜덤 테스팅 (Random Testing, RT)보다 효율적으로 찾아내기 위한 테스트 케이스 선택 기법이다. 테스트 케이스 선택에 많은 연산량을 필요로 하는 초기 ART 기법인 거리 기반 ART (Distance-based ART, D-ART)와 제한 영역 기반 ART (Restricted Random Testing, RRT)의 개선을 위해 입력 도메인을 반복 분할하는 기법들이 제안되었고, 이 기법들은 낮은 연산량 및 성능 향상등의 효과를 가져왔다. 하지만, 입력 도메인 반복 분할 기반 기법에서도 기존 ART 기법에서 나타나는 테스트 케이스 분포 불균일 문제가 존재하고, 이는 기법의 확장성에 장애 요소로 작용한다. 따라서 본 논문에서는 반복 분할 기반 기법에서 나타나는 테스트 케이스 분포의 특성을 파악하고, 이를 적정 수준으로 제어하기 위한 입력 도메인 확장 정책을 제안하였으며, 실험을 통해 2차원 입력 도메인에서 3%, 3차원 입력 도메인에서 10% 수준의 성능 향상을 확인하였다.

Model predictive control combined with iterative learning control for nonlinear batch processes

  • Lee, Kwang-Soon;Kim, Won-Cheol;Lee, Jay H.
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1996년도 Proceedings of the Korea Automatic Control Conference, 11th (KACC); Pohang, Korea; 24-26 Oct. 1996
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    • pp.299-302
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    • 1996
  • A control algorithm is proposed for nonlinear multi-input multi-output(MIMO) batch processes by combining quadratic iterative learning control(Q-ILC) with model predictive control(MPC). Both controls are designed based on output feedback and Kalman filter is incorporated for state estimation. Novelty of the proposed algorithm lies in the facts that, unlike feedback-only control, unknown sustained disturbances which are repeated over batches can be completely rejected and asymptotically perfect tracking is possible for zero random disturbance case even with uncertain process model.

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