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A novel algorithm for approximating common solution of a system of monotone inclusion problems and common fixed point problem

  • * Corresponding author: Mohammad Eslamian

    * Corresponding author: Mohammad Eslamian 

This research was in part supported by a grant from IPM (No.1400470032)

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  • In this paper, we study the problem of finding a common element of the set of solutions of a system of monotone inclusion problems and the set of common fixed points of a finite family of generalized demimetric mappings in Hilbert spaces. We propose a new and efficient algorithm for solving this problem. Our method relies on the inertial algorithm, Tseng's splitting algorithm and the viscosity algorithm. Strong convergence analysis of the proposed method is established under standard and mild conditions. As applications we use our algorithm for finding the common solutions to variational inequality problems, the constrained multiple-set split convex feasibility problem, the convex minimization problem and the common minimizer problem. Finally, we give some numerical results to show that our proposed algorithm is efficient and implementable from the numerical point of view.

    Mathematics Subject Classification: Primary: 47H05, 47H10; Secondary: 65Y05.


    \begin{equation} \\ \end{equation}
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  • Figure 1.  The graph of the error $ \|x_n-x_{n-1}\|_2 $

    Figure 2.  The graph of $ x_n $

    Figure 3.  The graph of the value of $ \frac{1}{2} \|Tx_n-b\|^2 $ for the algorithms

    Figure 4.  Comparison of the new algorithm and the Algorithm 1 to recovery of a sparse signal with 5% nonzero elements

    Table 1.  The results of the new algorithm for Example 5.1

    Starting points CPU time No. iterations
    $ x_0=t^2 $ $ x_1=sin(2t) $ 0.62 s 1
    $ x_0=t $ $ x_1=3e^{-2t} $ 1.42 s 2
    $ x_0=10\;\; t\;\; sin(5t) $ $ x_1=10\;\; t\;\; sin(5t) $ 0.61 s 1
     | Show Table
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    Table 2.  Numerical results of comparison of the new algorithm and the Algorithm 1 for Example 5.2

    Starting point(s) Algorithm 1 The new algorithm
    No. iterations CPU time No. iterations CPU time
    $ [-5,4,-3,2,-1] $ 63 0.0133 31 0.0025
    $ [-50,40,-30,20,-1] $ 72 0.0263 35 0.0093
    $ [5,4,3,2,1] $ 64 0.0146 31 0.0120
    $ [50,40,30,20,10] $ 72 0.0150 29 0.0095
     | Show Table
    DownLoad: CSV

    Table 3.  The details of iterations of the new algorithm for Example 5.2

    n $ x_n $ $ \|x_n-x_{n-1}\|_2 $
    0 [-5.000, 4.0000, -3.0000, 2.0000, -1.0000]
    1 [-5.000, 4.0000, -3.0000, 2.0000, -1.0000]
    2 [-6.3896, 5.0620, -4.2310, 2.4069, -1.5759] 2.2520e+00
    8 [-0.0295, 0.0190, -0.0547, -0.0021, -0.0336] 1.8203e-01
    14 [ 0.0019, -0.0014, 0.0024, -0.0003, 0.0013] 2.6378e-03
    20 [ 0.0000, -0.0000, 0.0000, -0.0000, 0.0000] 5.5509e-05
    22 [ 0.0000, -0.0000, 0.0000, -0.0000, 0.0000] 8.9023e-06
     | Show Table
    DownLoad: CSV

    Table 4.  Numerical results of comparison of the new algorithm and The Algorithm 1 to recovery of a sparse signal with $ p $ % nonzero elements

    p Algorithm 1 New Algorithm
    CPU time No. iterations CPU time No. iterations
    2 % 1.8809 s 606 0.3698 s 129
    5 % 2.2180 s 790 0.4061 s 142
    10 % 1.1052 s 374 0.5425 s 174
     | Show Table
    DownLoad: CSV
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