CN107085742A - A kind of intelligent optimization algorithm based on simple form neighborhood Yu many role's evolution strategies - Google Patents

A kind of intelligent optimization algorithm based on simple form neighborhood Yu many role's evolution strategies Download PDF

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CN107085742A
CN107085742A CN201710138048.2A CN201710138048A CN107085742A CN 107085742 A CN107085742 A CN 107085742A CN 201710138048 A CN201710138048 A CN 201710138048A CN 107085742 A CN107085742 A CN 107085742A
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全海燕
张艾怡
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Kunming University of Science and Technology
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Abstract

The present invention relates to a kind of intelligent optimization algorithm based on simple form neighborhood Yu many role's evolution strategies, belong to novel intelligent global optimization approach calculating field.First to be uniformly distributed probability in search space random initializtion particle position;Then each particle searches for new position using simple form neighborhood search operator, and utilize test function, evaluate the quality of each particle new position, further according to the quality of particle new position, it is determined that optimal particle and its optimal location in three character locations of each particle, last minute book iteration cycle, terminate this iterative search cycle, start next iterative search cycle, until particle converges to globe optimum position.The present invention proposes many role's state Evolutionary Search Strategies and simple form neighborhood search mechanism, the search of fusion group collaboration and tournament selection evolution strategy, is a kind of effective intelligent global optimization algorithm.

Description

A kind of intelligent optimization algorithm based on simple form neighborhood Yu many role's evolution strategies
Technical field
The present invention relates to a kind of intelligent optimization algorithm based on simple form neighborhood Yu many role's evolution strategies, realize and searched given Rope space search belongs to novel intelligent global optimization approach calculating field to globe optimum position.
Background technology
In recent years, in order to solve the Global Optimal Problem in a large amount of actual application problems, many global optimization approaches are carried Go out, wherein, the intelligent optimization algorithm based on swarm intelligence increasingly becomes the focus of optimized algorithm research.Such as genetic algorithm, exempt from Epidemic disease algorithm, particle cluster algorithm, differential evolution algorithm, ant colony algorithm, fireworks algorithm etc..But these algorithms are there is also some shortcomings, As search is easily trapped into local best points, it is impossible to converge to globe optimum;Algorithmic statement is relied on to the performance of globe optimum The control parameter of algorithm;The stability of algorithmic statement to globe optimum is bad, and variance is bigger than normal.Meanwhile, for these algorithms Innovatory algorithm is mostly by increasing algorithm complex, introducing more control parameters and realize more preferable algorithm performance.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of intelligence based on simple form neighborhood and many role's evolution strategies is excellent Change algorithm, the global optimization for complex cost function.For these problems of intelligent optimization algorithm, grain is realized with many role's states Son search diversity, the simple Swarm Intelligent Algorithm of algorithm structure.
The technical scheme is that:
A kind of intelligent optimization algorithm based on simple form neighborhood Yu many role's evolution strategies, is being searched with being uniformly distributed probability first Rope space random initializtion particle position;Then each particle searches for new position using simple form neighborhood search operator, and utilizes survey Trial function, evaluates the quality of each particle new position, further according to the quality of particle new position, it is determined that three roles of each particle Optimal particle and its optimal location in position, last minute book iteration cycle, terminate this iterative search cycle, start next change For the search cycle, until particle converges to globe optimum position.
The initialization of the search space particle is produced using probability function is uniformly distributed.
Particle simple form neighborhood search mode finally determines that the mode of new particle is as follows in the search space:
In search space RnIn, two dimensions p, q are randomly selected with even distribution pattern, search subspace R is built2, herein Each particle simple form neighborhood search operator, is defined as follows in search subspace, colony:
Wherein,Be particle i in the t+1 times iteration, search son Space R2On four new positions searching;Be particle i in the t times iteration, in search subspace R2On search Original position;Be particle j in the t times iteration, in search subspace R2On the original position that searches;It is optimal in group Particle o is in the t times iteration, in search subspace R2On the optimal location that searches;It is with positionCentered on, PositionSymmetric position;It is with positionCentered on, positionSymmetric position, r11,r12,r21,r22, r31,r32,r41And r42It is 8 random numbers produced on interval [0,1] with even distribution pattern.
Each particle has three role's states in the colony, is respectively:Center role's state, exploits role's state, explores angle Color state, is defined respectively as:
Center role's state, is defined as the optimal location that each particle search is arrived;
Role's state is exploited, the latest position that each particle search is arrived is defined as;
Role's state is explored, is defined as each particle to be evenly distributed on the position of search space random position.
It is described to search for comprising the following steps that for globe optimum in search space:
S1, by m particle be based on be evenly distributed on search space carry out initialization random position;
Wherein,It is i-th of particle in RnPosition in k-th of dimension of search subspace,Withxk It is search respectively The upper bound and lower bound of the space in k-th of dimension, rand (0,1) are the equally distributed random numbers on interval [0,1];
S2, for each particle i in colony, in search space RnIn, two dimensions are randomly selected with even distribution pattern P, q are spent, search subspace R is built2, in this search subspace, each particle utilizes simple form neighborhood search operator and many role's states Search strategy searches for new position, is defined as follows:
Wherein,Be particle i in the t+1 times iteration, search son Space R2On the four Ge Xin centers character locations that search;Be particle i in the t times iteration, in search subspace R2On The former center character location searched;It is the center role's state produced from the t times iteration of particle j, exploits role's state, survey Visit and randomly selected in role's state with even distribution pattern, in search subspace R2On position;It is that optimal particle o exists in group In the t times iteration, in search subspace R2On the optimal center character location that searches;It is with positionFor in The heart, positionSymmetric position;It is with positionCentered on, positionSymmetric position, r11,r12, r21,r22,r31,r32,r41And r42It is 8 random numbers produced on interval [0,1] with even distribution pattern;
S3, for each particle i in colony, using step S2 in search subspace R2The 4 new central angles searched Color bits is put:And keep its position in other dimensions constant, update every Individual particle is in RnOn 4 Ge Xin centers character locations:
S4, the quality according to each particle of fitness function f (x) evaluations, it is determined that three role's states of each particle:Center Role's state, exploits role's state, explores role's state, and definition is as follows respectively:
Center role's state --- using greediness as principle, it is defined as the optimal location that each particle search is arrived:xic(t+1);
Exploitation role's state --- using nearest property as principle, the latest position that each particle search is arrived is defined as, i.e.,:
xil(t+1)={ xic1(t+1),xic2(t+1),xic3(t+1),xic4(t+1)} (14)
Exploration role's state --- using equally distributed randomness as principle, it is defined as each particle to be evenly distributed on search The position of space random position:xig(t+1);
The position of optimal particle in S5, record colony:xoc(t+1) S2, is returned, starts next search cycle, until group Particle converges to the position of optimal particle in optimal location, i.e. colony and stable does not change to given accuracy in body.
The beneficial effects of the invention are as follows:
1st, in global search aspect of performance, property of the test function classical in this field to this intelligent optimization algorithm is utilized It can be tested.Test result shows:For all test functions, especially multi-modal test function, algorithm is with high accuracy Globe optimum is converged to.Illustrate that the algorithm is preferable in global search aspect of performance.
2nd, in terms of local convergence performance, property of the test function classical in this field to this intelligent optimization algorithm is utilized It can be tested.Test result shows:Compared with other classical intelligent optimization algorithms and its innovatory algorithm, for all test letters Number, the convergence of algorithm speed reaches consistent with them or better than them.
3rd, in terms of control parameter of algorithm, the algorithm only one of which control parameter --- Population.Compare other classics Have more control parameter with improved intelligent optimization algorithm, and its performance is related to its control parameter, this algorithm embody compared with Strong advantage.
4th, in terms of algorithm reliability, performance of the test function classical in this field to this intelligent optimization algorithm is utilized Tested.Test result shows:Under 50 different random initialization, this algorithm does not occur the example for deviateing globe optimum Outside.Compare other classical and improved intelligent optimization algorithm and occur that exceptionality restrains under different random initialization, show this The variance index of algorithmic statement performance preferably, there is higher reliability.
Brief description of the drawings
Fig. 1 is algorithm flow chart of the invention;
Fig. 2 is distribution map of the embodiment of the present invention 1 using test function;
Convergent iterations figure of the algorithm search to optimal value in Fig. 3 embodiment of the present invention 1;
Fig. 4 embodiment of the present invention 2 uses the distribution map of test function;
Convergent iterations figure of the algorithm search to optimal value in Fig. 5 embodiment of the present invention 2.
Embodiment
In order to illustrate the performance of the algorithm, the optimization of a multi-modal function and a single mode state function is chosen respectively Illustrated for example.
Embodiment 1:Implementation process is referring to Fig. 1, Fig. 2, shown in Fig. 3.It is specific as follows:
One object function to be optimized is:
It is a multi-modal function for including a large amount of local best points, and domain of definition is [- 600,600]n, and it is global most The figure of merit is 0, and its Two dimensional Distribution is as shown in Figure 2.This algorithm is determined at random by the search space that domain of definition is set with being uniformly distributed The initial position of each particle in position, then, algorithm will guide all particles in colony to converge to globe optimum.
Referring to Fig. 1, the searching algorithm is comprised the following steps that:
S1), m particle is based on to be evenly distributed on search space progress initialization random position;
Wherein,It is i-th of particle in RnPosition in k-th of dimension of search subspace.And xkRespectively -600 and 600, rand (0,1) are the equally distributed random number on interval [0,1]
S2), for each particle i in colony, in search space RnIn, two dimensions are randomly selected with even distribution pattern P, q are spent, search subspace R is built2.In this search subspace, each particle utilizes simple form neighborhood search operator and many role's states Search strategy searches for new position, is defined as follows:
Wherein,Be particle i in the t+1 times iteration, search son Space R2On the four Ge Xin centers character locations that search;Be particle i in the t times iteration, in search subspace R2On The former center character location searched;It is the center role's state produced from the t times iteration of particle j, exploits role's state, survey Visit and randomly selected in role's state with even distribution pattern, in search subspace R2On position;It is that optimal particle o exists in group In the t times iteration, in search subspace R2On the optimal center character location that searches;It is with positionFor in The heart, positionSymmetric position;It is with positionCentered on, positionSymmetric position.r11,r12, r21,r22,r31,r32,r41And r42It is 8 random numbers produced on interval [0,1] with even distribution pattern.
S3), for each particle i in colony, using step S2 in search subspace R2The 4 new central angles searched Color bits is put:And keep its position in other dimensions constant, update every Individual particle is in RnOn 4 Ge Xin centers character locations:
S4), the quality of each particle is evaluated according to fitness function f (x), it is determined that three role's states of each particle:In Heart role's state, exploits role's state, explores role's state, and definition is as follows respectively:
Center role's state --- using greediness as principle, it is defined as the optimal location that each particle search is arrived:xic(t+1)。
Exploitation role's state --- using nearest property as principle, the latest position that each particle search is arrived is defined as, i.e.,:
xil(t+1)={ xic1(t+1),xic2(t+1),xic3(t+1),xic4(t+1)} (21)
Exploration role's state --- using equally distributed randomness as principle, it is defined as each particle to be evenly distributed on search The position of space random position:xig(t+1)。
S5), the position of optimal particle in colony is recorded:xoc(t+1) S2, is returned), start next search cycle, until Particle converges to the position of optimal particle in optimal location, i.e. colony and stable does not change to given accuracy in colony.
Fig. 3 is illustrated in this example, when Population is respectively 20 and 30, invention algorithmic statement to optimization object function most The evolution curve of advantage, wherein, abscissa is iterations, and ordinate is that each iterative search (is searched to optimal value in order to embody Rope has taken denary logarithm to the precision of optimal value to searching optimal value).It can be seen that from the evolution curve:With Iterations increase, algorithm progressively converges to globe optimum, and precision is 10-16
Embodiment 2:Implementation process is referring to Fig. 1, Fig. 4, shown in Fig. 5.It is specific as follows:
One object function to be optimized is:
It is a multi-modal function for including a large amount of local best points, and domain of definition is:[- 100,100]n, and it is global Optimum point is:0, its Two dimensional Distribution is as shown in Figure 4.It is every that this algorithm will be uniformly distributed random position in domain of definition search space The initial position of individual particle, then, algorithm will guide all particles in colony to converge to globe optimum.
Referring to Fig. 1, the searching algorithm is comprised the following steps that:
S1), m particle is based on to be evenly distributed on search space progress initialization random position;
Wherein,It is i-th of particle in RnPosition in k-th of dimension of search subspace.Withxk Be respectively -100 and 100, rand (0,1) are the equally distributed random number on interval [0,1]
S2), for each particle i in colony, in search space RnIn, two dimensions are randomly selected with even distribution pattern P, q are spent, search subspace R is built2.In this search subspace, each particle utilizes simple form neighborhood search operator and many role's states Search strategy searches for new position, is defined as follows:
Wherein,Be particle i in the t+1 times iteration, search son Space R2On the four Ge Xin centers character locations that search;Be particle i in the t times iteration, in search subspace R2On The former center character location searched;It is the center role's state produced from the t times iteration of particle j, exploits role's state, survey Visit and randomly selected in role's state with even distribution pattern, in search subspace R2On position;It is that optimal particle o exists in group In the t times iteration, in search subspace R2On the optimal center character location that searches;It is with positionFor in The heart, positionSymmetric position;It is with positionCentered on, positionSymmetric position.r11,r12, r21,r22,r31,r32,r41And r42It is 8 random numbers produced on interval [0,1] with even distribution pattern.
S3), for each particle i in colony, using step S2 in search subspace R2The 4 new central angles searched Color bits is put:And keep its position in other dimensions constant, update every Individual particle is in RnOn 4 Ge Xin centers character locations:
S4), the quality of each particle is evaluated according to fitness function f (x), it is determined that three role's states of each particle:In Heart role's state, exploits role's state, explores role's state, and definition is as follows respectively:
Center role's state --- using greediness as principle, it is defined as the optimal location that each particle search is arrived:xic(t+1)。
Exploitation role's state --- using nearest property as principle, the latest position that each particle search is arrived is defined as, i.e.,:
xil(t+1)={ xic1(t+1),xic2(t+1),xic3(t+1),xic4(t+1)} (32)
Exploration role's state --- using equally distributed randomness as principle, it is defined as each particle to be evenly distributed on search The position of space random position:xig(t+1)。
S5), the position of optimal particle in colony is recorded:xoc(t+1) S2, is returned), start next search cycle, until Particle converges to the position of optimal particle in optimal location, i.e. colony and stable does not change to given accuracy in colony.
Shown in Fig. 5 in this example, when Population is respectively 20 and 30, invention algorithmic statement to optimization object function most The evolution curve of advantage, wherein, abscissa is iterations, and ordinate is that each iterative search (is searched to optimal value in order to embody Rope has taken denary logarithm to the precision of optimal value to searching optimal value).It can be seen that from the evolution curve:With Iterations increase, algorithm progressively converges to globe optimum, and precision is 10-60
In order to more intuitively can clearly represent the effect of the present invention, 14 classical evaluation functions are set forth below out, such as the institute of table 1 Show.Example test is carried out under Matlab platforms to these evaluation functions using inventive algorithm, reflection algorithmic statement is have recorded The algorithm iteration number of times index of speed, reflects the optimal value average value index of algorithmic statement precision, reflects algorithmic statement stability Optimal value variance index, as a result such as table 2 and table 3.In table simultaneously with other algorithms --- tachytelic evolution planning algorithm (FEP) and The performance indications of Orthogonal Genetic Algorithm (OGA/Q) are contrasted.
Summary analysis 1, table 2, the data of table 3 illustrate inventive algorithm no matter in convergence rate, convergence precision, convergence Preferable advantage is respectively provided with terms of stability.
Table 1:Test of heuristics function
Table 2:Algorithm performance compares
Table 3:Algorithm performance compares
Above in association with accompanying drawing to the present invention embodiment be explained in detail, but the present invention be not limited to it is above-mentioned Embodiment, can also be before present inventive concept not be departed from the knowledge that those of ordinary skill in the art possess Put that various changes can be made.

Claims (5)

1. a kind of intelligent optimization algorithm based on simple form neighborhood Yu many role's evolution strategies, it is characterised in that:
First to be uniformly distributed probability in search space random initializtion particle position;Then each particle is searched using simple form neighborhood Rope operator searches for new position, and utilizes test function, the quality of each particle new position is evaluated, further according to the excellent of particle new position It is bad, it is determined that optimal particle and its optimal location in three character locations of each particle, last minute book iteration cycle, terminate this In the iterative search cycle, start next iterative search cycle, until particle converges to globe optimum position.
2. the intelligent optimization algorithm according to claim 1 based on simple form neighborhood Yu many role's evolution strategies, its feature exists In:The initialization of the search space particle is produced using probability function is uniformly distributed.
3. the intelligent optimization algorithm according to claim 1 based on simple form neighborhood Yu many role's evolution strategies, its feature exists In:Particle simple form neighborhood search mode finally determines that the mode of new particle is as follows in the search space:
In search space RnIn, two dimensions p, q are randomly selected with even distribution pattern, search subspace R is built2, search for herein Each particle simple form neighborhood search operator, is defined as follows in subspace, colony:
<mrow> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mn>1</mn> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>=</mo> <msub> <mi>r</mi> <mn>11</mn> </msub> <mo>&amp;CenterDot;</mo> <msubsup> <mi>x</mi> <mi>i</mi> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>r</mi> <mn>12</mn> </msub> <mo>&amp;CenterDot;</mo> <msubsup> <mi>x</mi> <mi>j</mi> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>+</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>-</mo> <msub> <mi>r</mi> <mn>11</mn> </msub> <mo>-</mo> <msub> <mi>r</mi> <mn>12</mn> </msub> <mo>)</mo> </mrow> <mo>&amp;CenterDot;</mo> <msubsup> <mi>x</mi> <mi>o</mi> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>)</mo> </mrow> </mrow>
<mrow> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mn>2</mn> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>=</mo> <msub> <mi>r</mi> <mn>21</mn> </msub> <mo>&amp;CenterDot;</mo> <msubsup> <mi>x</mi> <mi>i</mi> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>r</mi> <mn>22</mn> </msub> <mo>&amp;CenterDot;</mo> <msubsup> <mover> <mi>x</mi> <mo>&amp;OverBar;</mo> </mover> <mi>j</mi> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>+</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>-</mo> <msub> <mi>r</mi> <mn>21</mn> </msub> <mo>-</mo> <msub> <mi>r</mi> <mn>22</mn> </msub> <mo>)</mo> </mrow> <mo>&amp;CenterDot;</mo> <msubsup> <mi>x</mi> <mi>o</mi> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>2</mn> <mo>)</mo> </mrow> </mrow>
<mrow> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mn>3</mn> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>=</mo> <msub> <mi>r</mi> <mn>31</mn> </msub> <mo>&amp;CenterDot;</mo> <msubsup> <mi>x</mi> <mi>i</mi> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>r</mi> <mn>32</mn> </msub> <mo>&amp;CenterDot;</mo> <msubsup> <mover> <mi>x</mi> <mo>&amp;OverBar;</mo> </mover> <mi>j</mi> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>+</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>-</mo> <msub> <mi>r</mi> <mn>31</mn> </msub> <mo>-</mo> <msub> <mi>r</mi> <mn>32</mn> </msub> <mo>)</mo> </mrow> <mo>&amp;CenterDot;</mo> <msubsup> <mover> <mi>x</mi> <mo>&amp;OverBar;</mo> </mover> <mi>o</mi> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>3</mn> <mo>)</mo> </mrow> </mrow>
<mrow> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mn>4</mn> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>=</mo> <msub> <mi>r</mi> <mn>41</mn> </msub> <mo>&amp;CenterDot;</mo> <msubsup> <mi>x</mi> <mi>i</mi> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>r</mi> <mn>42</mn> </msub> <mo>&amp;CenterDot;</mo> <msubsup> <mi>x</mi> <mi>j</mi> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>+</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>-</mo> <msub> <mi>r</mi> <mn>41</mn> </msub> <mo>-</mo> <msub> <mi>r</mi> <mn>42</mn> </msub> <mo>)</mo> </mrow> <mo>&amp;CenterDot;</mo> <msubsup> <mover> <mi>x</mi> <mo>&amp;OverBar;</mo> </mover> <mi>o</mi> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>4</mn> <mo>)</mo> </mrow> </mrow>
Wherein,Be particle i in the t+1 times iteration, in search subspace R2 On four new positions searching;Be particle i in the t times iteration, in search subspace R2On the original position that searches;Be particle j in the t times iteration, in search subspace R2On the original position that searches;It is that optimal particle o exists in group In the t times iteration, in search subspace R2On the optimal location that searches;It is with positionCentered on, position Symmetric position;It is with positionCentered on, positionSymmetric position, r11,r12,r21,r22,r31,r32,r41 And r42It is 8 random numbers produced on interval [0,1] with even distribution pattern.
4. the intelligent optimization algorithm according to claim 1 based on simple form neighborhood Yu many role's evolution strategies, its feature exists In:Each particle has three role's states in the colony, is respectively:Center role's state, exploits role's state, explores role's state, It is defined respectively as:
Center role's state, is defined as the optimal location that each particle search is arrived;
Role's state is exploited, the latest position that each particle search is arrived is defined as;
Role's state is explored, is defined as each particle to be evenly distributed on the position of search space random position.
5. the intelligent optimization algorithm according to claim 1 based on simple form neighborhood Yu many role's evolution strategies, its feature exists In:It is described to search for comprising the following steps that for globe optimum in search space:
S1, by m particle be based on be evenly distributed on search space carry out initialization random position;
<mrow> <msubsup> <mi>x</mi> <mi>i</mi> <mi>k</mi> </msubsup> <mrow> <mo>(</mo> <mn>0</mn> <mo>)</mo> </mrow> <mo>=</mo> <munder> <msup> <mi>x</mi> <mi>k</mi> </msup> <mo>&amp;OverBar;</mo> </munder> <mo>+</mo> <mi>r</mi> <mi>a</mi> <mi>n</mi> <mi>d</mi> <mrow> <mo>(</mo> <mn>0</mn> <mo>,</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>&amp;times;</mo> <mrow> <mo>(</mo> <mover> <msup> <mi>x</mi> <mi>k</mi> </msup> <mo>&amp;OverBar;</mo> </mover> <mo>-</mo> <munder> <msup> <mi>x</mi> <mi>k</mi> </msup> <mo>&amp;OverBar;</mo> </munder> <mo>)</mo> </mrow> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>5</mn> <mo>)</mo> </mrow> </mrow>
Wherein,It is i-th of particle in RnPosition in k-th of dimension of search subspace,Withxk It is search subspace respectively The upper bound and lower bound in k-th of dimension, rand (0,1) are the equally distributed random numbers on interval [0,1];
S2, for each particle i in colony, in search space RnIn, two dimensions p, q are randomly selected with even distribution pattern, Build search subspace R2, in this search subspace, each particle utilizes simple form neighborhood search operator and many role's states search plan New position is slightly searched for, is defined as follows:
<mrow> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>1</mn> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>=</mo> <msub> <mi>r</mi> <mn>11</mn> </msub> <mo>&amp;CenterDot;</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>r</mi> <mn>12</mn> </msub> <mo>&amp;CenterDot;</mo> <msubsup> <mi>x</mi> <mrow> <mi>j</mi> <mo>&amp;lsqb;</mo> <mi>c</mi> <mo>,</mo> <mi>l</mi> <mo>,</mo> <mi>g</mi> <mo>&amp;rsqb;</mo> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>+</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>-</mo> <msub> <mi>r</mi> <mn>11</mn> </msub> <mo>-</mo> <msub> <mi>r</mi> <mn>12</mn> </msub> <mo>)</mo> </mrow> <mo>&amp;CenterDot;</mo> <msubsup> <mi>x</mi> <mrow> <mi>o</mi> <mi>c</mi> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>6</mn> <mo>)</mo> </mrow> </mrow> 1
<mrow> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>2</mn> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>=</mo> <msub> <mi>r</mi> <mn>21</mn> </msub> <mo>&amp;CenterDot;</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>r</mi> <mn>22</mn> </msub> <mo>&amp;CenterDot;</mo> <msubsup> <mover> <mi>x</mi> <mo>&amp;OverBar;</mo> </mover> <mrow> <mi>j</mi> <mo>&amp;lsqb;</mo> <mi>c</mi> <mo>,</mo> <mi>l</mi> <mo>,</mo> <mi>g</mi> <mo>&amp;rsqb;</mo> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>+</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>-</mo> <msub> <mi>r</mi> <mn>21</mn> </msub> <mo>-</mo> <msub> <mi>r</mi> <mn>22</mn> </msub> <mo>)</mo> </mrow> <mo>&amp;CenterDot;</mo> <msubsup> <mi>x</mi> <mrow> <mi>o</mi> <mi>c</mi> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>7</mn> <mo>)</mo> </mrow> </mrow>
<mrow> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>3</mn> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>=</mo> <msub> <mi>r</mi> <mn>31</mn> </msub> <mo>&amp;CenterDot;</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>r</mi> <mn>32</mn> </msub> <mo>&amp;CenterDot;</mo> <msubsup> <mover> <mi>x</mi> <mo>&amp;OverBar;</mo> </mover> <mrow> <mi>j</mi> <mo>&amp;lsqb;</mo> <mi>c</mi> <mo>,</mo> <mi>l</mi> <mo>,</mo> <mi>g</mi> <mo>&amp;rsqb;</mo> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>+</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>-</mo> <msub> <mi>r</mi> <mn>31</mn> </msub> <mo>-</mo> <msub> <mi>r</mi> <mn>32</mn> </msub> <mo>)</mo> </mrow> <mo>&amp;CenterDot;</mo> <msubsup> <mover> <mi>x</mi> <mo>&amp;OverBar;</mo> </mover> <mrow> <mi>o</mi> <mi>c</mi> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>8</mn> <mo>)</mo> </mrow> </mrow>
<mrow> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>4</mn> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>=</mo> <msub> <mi>r</mi> <mn>41</mn> </msub> <mo>&amp;CenterDot;</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>r</mi> <mn>42</mn> </msub> <mo>&amp;CenterDot;</mo> <msubsup> <mi>x</mi> <mrow> <mi>j</mi> <mo>&amp;lsqb;</mo> <mi>c</mi> <mo>,</mo> <mi>l</mi> <mo>,</mo> <mi>g</mi> <mo>&amp;rsqb;</mo> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>+</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>-</mo> <msub> <mi>r</mi> <mn>41</mn> </msub> <mo>-</mo> <msub> <mi>r</mi> <mn>42</mn> </msub> <mo>)</mo> </mrow> <mo>&amp;CenterDot;</mo> <msubsup> <mover> <mi>x</mi> <mo>&amp;OverBar;</mo> </mover> <mrow> <mi>o</mi> <mi>c</mi> </mrow> <mrow> <mi>p</mi> <mo>,</mo> <mi>q</mi> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>9</mn> <mo>)</mo> </mrow> </mrow>
Wherein,Be particle i in the t+1 times iteration, in search subspace R2 On the four Ge Xin centers character locations that search;Be particle i in the t times iteration, in search subspace R2On search Former center character location;It is the center role's state produced from the t times iteration of particle j, exploits role's state, explores role Randomly selected in state with even distribution pattern, in search subspace R2On position;Be in group optimal particle o at the t times In iteration, in search subspace R2On the optimal center character location that searches;It is with positionCentered on, position PutSymmetric position;It is with positionCentered on, positionSymmetric position, r11,r12,r21,r22, r31,r32,r41And r42It is 8 random numbers produced on interval [0,1] with even distribution pattern;
S3, for each particle i in colony, using step S2 in search subspace R2The 4 new central angle color bits searched Put:And keep its position in other dimensions constant, update each grain Son is in RnOn 4 Ge Xin centers character locations:
<mrow> <msub> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>1</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>=</mo> <mo>&amp;lsqb;</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>1</mn> </mrow> <mn>1</mn> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>1</mn> </mrow> <mn>2</mn> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <mn>....</mn> <mo>,</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>1</mn> </mrow> <mi>p</mi> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>,</mo> <mn>...</mn> <mo>,</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>1</mn> </mrow> <mi>q</mi> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>,</mo> <mo>...</mo> <mo>,</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>1</mn> </mrow> <mrow> <mi>n</mi> <mo>-</mo> <mn>1</mn> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <mn>...</mn> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>1</mn> </mrow> <mi>n</mi> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>&amp;rsqb;</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>10</mn> <mo>)</mo> </mrow> </mrow>
<mrow> <msub> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>2</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>=</mo> <mo>&amp;lsqb;</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>2</mn> </mrow> <mn>1</mn> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>2</mn> </mrow> <mn>2</mn> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <mn>....</mn> <mo>,</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>2</mn> </mrow> <mi>p</mi> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>,</mo> <mn>...</mn> <mo>,</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>2</mn> </mrow> <mi>q</mi> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>,</mo> <mo>...</mo> <mo>,</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>2</mn> </mrow> <mrow> <mi>n</mi> <mo>-</mo> <mn>1</mn> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <mn>...</mn> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>2</mn> </mrow> <mi>n</mi> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>&amp;rsqb;</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>11</mn> <mo>)</mo> </mrow> </mrow>
<mrow> <msub> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>3</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>=</mo> <mo>&amp;lsqb;</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>3</mn> </mrow> <mn>1</mn> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>3</mn> </mrow> <mn>2</mn> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <mn>....</mn> <mo>,</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>3</mn> </mrow> <mi>p</mi> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>,</mo> <mn>...</mn> <mo>,</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>3</mn> </mrow> <mi>q</mi> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>,</mo> <mn>...</mn> <mo>,</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>3</mn> </mrow> <mrow> <mi>n</mi> <mo>-</mo> <mn>1</mn> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <mn>...</mn> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>3</mn> </mrow> <mi>n</mi> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>&amp;rsqb;</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>12</mn> <mo>)</mo> </mrow> </mrow>
<mrow> <msub> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>4</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>=</mo> <mo>&amp;lsqb;</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>4</mn> </mrow> <mn>1</mn> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>4</mn> </mrow> <mn>2</mn> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <mn>....</mn> <mo>,</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>4</mn> </mrow> <mi>p</mi> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>,</mo> <mn>...</mn> <mo>,</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>4</mn> </mrow> <mi>q</mi> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>,</mo> <mn>...</mn> <mo>,</mo> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>4</mn> </mrow> <mrow> <mi>n</mi> <mo>-</mo> <mn>1</mn> </mrow> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>,</mo> <mn>...</mn> <msubsup> <mi>x</mi> <mrow> <mi>i</mi> <mi>c</mi> <mn>4</mn> </mrow> <mi>n</mi> </msubsup> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>&amp;rsqb;</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>13</mn> <mo>)</mo> </mrow> </mrow>
S4, the quality according to each particle of fitness function f (x) evaluations, it is determined that three role's states of each particle:Center role State, exploits role's state, explores role's state, and definition is as follows respectively:
Center role's state --- using greediness as principle, it is defined as the optimal location that each particle search is arrived:xic(t+1);
Exploitation role's state --- using nearest property as principle, the latest position that each particle search is arrived is defined as, i.e.,:
xil(t+1)={ xic1(t+1),xic2(t+1),xic3(t+1),xic4(t+1)} (14)
Exploration role's state --- using equally distributed randomness as principle, it is defined as each particle to be evenly distributed on search space The position of random position:xig(t+1);
The position of optimal particle in S5, record colony:xoc(t+1) S2, is returned, starts next search cycle, until in colony The position stabilization that particle converges to optimal particle in optimal location, i.e. colony does not change to given accuracy.
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CN109165610A (en) * 2018-08-31 2019-01-08 昆明理工大学 A kind of Handwritten Digital Recognition detection method evolved based on simple form
CN109165610B (en) * 2018-08-31 2021-01-05 昆明理工大学 Handwritten digit recognition and detection method based on simplex evolution

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Application publication date: 20170822