Global optimization: Difference between revisions
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{{Short description|Branch of mathematics}} |
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{{more footnotes|date=December 2013}} |
{{more footnotes|date=December 2013}} |
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* Calibration of [[radio propagation models]] and of many other models in the sciences and engineering |
* Calibration of [[radio propagation models]] and of many other models in the sciences and engineering |
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* [[Curve fitting]] like [[non-linear least squares]] analysis and other generalizations, used in fitting model parameters to experimental data in chemistry, physics, biology, economics, finance, medicine, astronomy, engineering. |
* [[Curve fitting]] like [[non-linear least squares]] analysis and other generalizations, used in fitting model parameters to experimental data in chemistry, physics, biology, economics, finance, medicine, astronomy, engineering. |
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*[[Radiation therapy#Intensity-modulated radiation therapy (IMRT)|IMRT]] radiation therapy planning |
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== Deterministic methods == |
== Deterministic methods == |
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{{main article|Interval arithmetic|Set inversion}} |
{{main article|Interval arithmetic|Set inversion}} |
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'''Interval arithmetic''', '''interval mathematics''', '''interval analysis''', or '''interval computation''', is a method developed by mathematicians since the 1950s and 1960s as an approach to putting bounds on [[rounding error]]s and [[measurement error]]s in [[numerical analysis|mathematical computation]] and thus developing [[numerical methods]] that yield reliable results. Interval arithmetic helps find reliable and guaranteed solutions to equations and optimization problems. |
'''Interval arithmetic''', '''interval mathematics''', '''interval analysis''', or '''interval computation''', is a method developed by mathematicians since the 1950s and 1960s as an approach to putting bounds on [[rounding error]]s and [[measurement error]]s in [[numerical analysis|mathematical computation]] and thus developing [[numerical methods]] that yield reliable results. Interval arithmetic helps find reliable and guaranteed solutions to equations and optimization problems. |
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=== Space-filling curves === |
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The original multi-dimensional problem is reduced to a one-dimensional one by Peano-Hilbert space-filling curves<ref>{{Cite book|last=Sergeyev Y.D., Strongin R.G., Lera|first=D.|title=Introduction to Global Optimization Exploiting Space-Filling Curves|publisher=Springer|year=2013|isbn=978-1461480419}}</ref>. |
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===Methods based on real algebraic geometry=== |
===Methods based on real algebraic geometry=== |
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|volume = 110 |issue = 3 |pages = 1754–1766 |
|volume = 110 |issue = 3 |pages = 1754–1766 |
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|doi=10.1063/1.477812 |
|doi=10.1063/1.477812 |
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|arxiv = cond-mat/9809085|bibcode = 1999JChPh.110.1754F}}</ref><ref>David J. Earl and Michael W. Deem (2005) [http://www.rsc.org/Publishing/Journals/CP/article.asp?doi=b509983h "Parallel tempering: Theory, applications, and new perspectives"], ''Phys. Chem. Chem. Phys.'', 7, 3910</ref> |
|arxiv = cond-mat/9809085|bibcode = 1999JChPh.110.1754F|s2cid=13963102 |
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}}</ref><ref>David J. Earl and Michael W. Deem (2005) [http://www.rsc.org/Publishing/Journals/CP/article.asp?doi=b509983h "Parallel tempering: Theory, applications, and new perspectives"], ''Phys. Chem. Chem. Phys.'', 7, 3910</ref> |
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Sugita and Okamoto formulated a [[molecular dynamics]] version of parallel tempering:<ref>{{cite journal |
Sugita and Okamoto formulated a [[molecular dynamics]] version of parallel tempering:<ref>{{cite journal |
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|author = Y. Sugita and Y. Okamoto |
|author = Y. Sugita and Y. Okamoto |
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This results in a very robust ensemble which is able to sample both low and high energy configurations. |
This results in a very robust ensemble which is able to sample both low and high energy configurations. |
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In this way, thermodynamical properties such as the specific heat, which is in general not well computed in the canonical ensemble, can be computed with great precision. |
In this way, thermodynamical properties such as the specific heat, which is in general not well computed in the canonical ensemble, can be computed with great precision. |
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== Minima distribution == |
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A recent approach to the global optimization problem is via '''minima distribution''' |
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.<ref>{{cite journal|author=Xiaopeng Luo|year=2018|title=Minima distribution for global optimization|arxiv=1812.03457}}</ref> In this work, a relationship between any continuous function <math>f</math> on a compact set <math>\Omega\subset\mathbb{R}^n</math> and its global minima <math>f^*</math> has been strictly established. As a typical case, it follows that |
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:<math> |
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\lim_{k\to\infty}\int_\Omega f(x)m^{(k)}(x) \, \mathrm{d}x=f^*,~~\textrm{where}~~m^{(k)}(x)=\frac{e^{-kf(x)}}{\int_\Omega e^{-kf(x)} \, \mathrm{d}x}; |
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</math> |
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meanwhile, |
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:<math> |
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\lim_{k\to\infty}m^{(k)}(x) |
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=\left\{\begin{array}{cl} |
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\frac{1}{\mu(X^*)}, & x\in X^*, \\ |
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0, & x\in\Omega-X^*, |
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\end{array}\right. |
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</math> |
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where <math>\mu(X^*)</math> is the <math>n</math>-dimensional Lebesgue measure of the set of minimizers <math>X^*\in\Omega</math>. And if <math>f</math> is not a constant on <math>\Omega</math>, the monotonic relationship |
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:<math> |
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\int_\Omega f(x)m^{(k)}(x)\,\mathrm{d}x> |
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\int_\Omega f(x)m^{(k+\Delta k)}(x)\,\mathrm{d}x>f^* |
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</math> |
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holds for all <math>k\in\mathbb{R}</math> and <math>\Delta k>0</math>, which implies a series of monotonous containment relationships, and one of them is, for example, |
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:<math> |
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\Omega\supset D_f^{(k)}\supset D_f^{(k+\Delta k)}\supset X^*, \text{ where } D_f^{(k)}=\left\{ x \in \Omega : f(x)\leqslant \int_\Omega f(t)m^{(k)}(t) \, \mathrm{d}t\right\}. |
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</math> |
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And we define a '''minima distribution''' to be a weak limit <math>m_{f,\Omega}</math> such that the identity |
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:<math> |
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\int_\Omega m_{f,\Omega}(x)\varphi(x) \, \mathrm{d}x = \lim_{k\to\infty} \int_\Omega m^{(k)}(x) \varphi(x) \, \mathrm{d}x |
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</math> |
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holds for every smooth function <math>\varphi</math> with compact support in <math>\Omega</math>. Here are two immediate properties of <math>m_{f,\Omega}</math>: |
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: (1) <math>m_{f,\Omega}</math> satisfies the identity <math>\int_\Omega m_{f,\Omega}(x) \, \mathrm{d}x = 1</math>. |
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: (2) If <math>f</math> is continuous on <math>\Omega</math>, then <math>f^*=\int_\Omega f(x)m_{f,\Omega}(x) \, \mathrm{d}x</math>. |
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As a comparison, the well-known relationship between any differentiable convex function and its minima is strictly established by the gradient. If <math>f</math> is differentiable on a convex set <math>D</math>, then <math>f</math> is convex if and only if |
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:<math> |
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f(y)\geqslant f(x)+\nabla f(x)(y-x),~~\forall x,y\in D; |
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</math> |
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thus, <math>\nabla f(x^*)=0</math> implies that <math>f(y)\geqslant f(x^*)</math> holds for all <math>y\in D</math>, i.e., <math>x^*</math> is a global minimizer of <math>f</math> on <math>D</math>. |
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==Heuristics and metaheuristics == |
==Heuristics and metaheuristics == |
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{{main|Metaheuristic}} |
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Other approaches include heuristic strategies to search the search space in a more or less intelligent way, including: |
Other approaches include heuristic strategies to search the search space in a more or less intelligent way, including: |
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== Response surface methodology-based approaches == |
== Response surface methodology-based approaches == |
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* [[IOSO]] Indirect Optimization based on Self-Organization |
* [[IOSO]] Indirect Optimization based on Self-Organization |
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* [[Bayesian optimization]], a sequential design strategy for global [[optimization]] of black-box functions using [[Bayesian statistics]]<ref>Jonas Mockus (2013). [https://books.google.com/books? |
* [[Bayesian optimization]], a sequential design strategy for global [[optimization]] of black-box functions using [[Bayesian statistics]]<ref>Jonas Mockus (2013). [https://books.google.com/books?id=VuKoCAAAQBAJ&dq=%22Bayesian+approach+to+global+optimization%3A+theory+and+applications%22&pg=PR11 Bayesian approach to global optimization: theory and applications]. Kluwer Academic.</ref> |
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==See also== |
==See also== |
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{{refbegin}} |
{{refbegin}} |
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Deterministic global optimization: |
Deterministic global optimization: |
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* R. Horst, H. Tuy, [https://books.google.com/books? |
* R. Horst, H. Tuy, [https://books.google.com/books?id=Pe_1CAAAQBAJ&dq=%22Global+Optimization%3A+Deterministic+Approaches%22&pg=PA2 Global Optimization: Deterministic Approaches], Springer, 1996. |
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* R. Horst, [[Panos M. Pardalos|P.M. Pardalos]] and N.V. Thoai, [https://books.google.com/books? |
* R. Horst, [[Panos M. Pardalos|P.M. Pardalos]] and N.V. Thoai, [https://books.google.com/books?id=dbu02-1JbLIC&dq=%22Introduction+to+Global+Optimization%22&pg=PR11 Introduction to Global Optimization], Second Edition. Kluwer Academic Publishers, 2000. |
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*[https://www.mat.univie.ac.at/~neum/ms/glopt03.pdf A.Neumaier, Complete Search in Continuous Global Optimization and Constraint Satisfaction, pp. 271–369 in: Acta Numerica 2004 (A. Iserles, ed.), Cambridge University Press 2004.] |
*[https://www.mat.univie.ac.at/~neum/ms/glopt03.pdf A.Neumaier, Complete Search in Continuous Global Optimization and Constraint Satisfaction, pp. 271–369 in: Acta Numerica 2004 (A. Iserles, ed.), Cambridge University Press 2004.] |
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* M. Mongeau, H. Karsenty, V. Rouzé and J.-B. Hiriart-Urruty, [https://www.tandfonline.com/doi/abs/10.1080/10556780008805783 Comparison of public-domain software for black box global optimization]. Optimization Methods & Software 13(3), pp. 203–226, 2000. |
* M. Mongeau, H. Karsenty, V. Rouzé and J.-B. Hiriart-Urruty, [https://www.tandfonline.com/doi/abs/10.1080/10556780008805783 Comparison of public-domain software for black box global optimization]. Optimization Methods & Software 13(3), pp. 203–226, 2000. |
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* J.D. Pintér, [https://books.google.com/books? |
* J.D. Pintér, [https://books.google.com/books?id=uv7lBwAAQBAJ&dq=%22+Continuous+and+Lipschitz+Optimization%22&pg=PR18 Global Optimization in Action - Continuous and Lipschitz Optimization: Algorithms, Implementations and Applications]. Kluwer Academic Publishers, Dordrecht, 1996. Now distributed by Springer Science and Business Media, New York. This book also discusses stochastic global optimization methods. |
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* L. Jaulin, M. Kieffer, O. Didrit, E. Walter (2001). Applied Interval Analysis. Berlin: Springer. |
* L. Jaulin, M. Kieffer, O. Didrit, E. Walter (2001). Applied Interval Analysis. Berlin: Springer. |
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* E.R. Hansen (1992), Global Optimization using Interval Analysis, Marcel Dekker, New York. |
* E.R. Hansen (1992), Global Optimization using Interval Analysis, Marcel Dekker, New York. |
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* R.G. Strongin, Ya.D. Sergeyev (2000,2013,2014) [https://pdfs.semanticscholar.org/a6dc/009f2c4e5d22ed69fffa500c72a06cc71951.pdf Global optimization with non-convex constraints: Sequential and parallel algorithms], Kluwer Academic Publishers, Dordrecht. |
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* Ya.D. Sergeyev, R.G. Strongin, D. Lera (2013) [https://books.google.com/books?hl=en&lr=&id=ZXM8AAAAQBAJ&oi=fnd&pg=PR5&dq=%22Introduction+to+global+optimization+exploiting+space-filling+curves%22&ots=PdJp0--i7l&sig=eQImrC8Bih5ZzbipVUxxcIwPUuY Introduction to global optimization exploiting space-filling curves], Springer, NY. |
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* Ya.D. Sergeyev, D.E. Kvasov (2017) [https://books.google.com/books?hl=en&lr=&id=r38oDwAAQBAJ&oi=fnd&pg=PP5&dq=%22Deterministic+Global+Optimization:+An+introduction+to+the+diagonal+approach%22&ots=JuOPGIr54A&sig=SLKyqRSxSujxcS0xoqdPLyd4-W4 Deterministic Global Optimization: An introduction to the diagonal approach], Springer, NY. |
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For simulated annealing: |
For simulated annealing: |
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* {{cite journal | |
* {{cite journal | last1=Kirkpatrick | first1=S. | last2=Gelatt | first2=C. D. | last3=Vecchi | first3=M. P. | title=Optimization by Simulated Annealing | journal=Science | publisher=American Association for the Advancement of Science (AAAS) | volume=220 | issue=4598 | date=1983-05-13 | issn=0036-8075 | doi=10.1126/science.220.4598.671 | pmid=17813860 | pages=671–680| bibcode=1983Sci...220..671K | s2cid=205939 }} |
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For reactive search optimization: |
For reactive search optimization: |
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* [[Roberto Battiti]], M. Brunato and F. Mascia, Reactive Search and Intelligent Optimization, Operations Research/Computer Science Interfaces Series, Vol. 45, Springer, November 2008. {{ISBN|978-0-387-09623-0}} |
* [[Roberto Battiti]], M. Brunato and F. Mascia, Reactive Search and Intelligent Optimization, Operations Research/Computer Science Interfaces Series, Vol. 45, Springer, November 2008. {{ISBN|978-0-387-09623-0}} |
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For stochastic methods: |
For stochastic methods: |
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* [[Anatoly Zhigljavsky|A. Zhigljavsky]]. Theory of Global Random Search. Mathematics and its applications. Kluwer Academic Publishers. 1991. |
* [[Anatoly Zhigljavsky|A. Zhigljavsky]]. Theory of Global Random Search. Mathematics and its applications. Kluwer Academic Publishers. 1991. |
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* {{cite journal | last=Hamacher | first=K | title=Adaptation in stochastic tunneling global optimization of complex potential energy landscapes | journal=Europhysics Letters (EPL) | publisher=IOP Publishing | volume=74 | issue=6 | year=2006 | issn=0295-5075 | doi=10.1209/epl/i2006-10058-0 | pages=944–950}} |
* {{cite journal | last=Hamacher | first=K | title=Adaptation in stochastic tunneling global optimization of complex potential energy landscapes | journal=Europhysics Letters (EPL) | publisher=IOP Publishing | volume=74 | issue=6 | year=2006 | issn=0295-5075 | doi=10.1209/epl/i2006-10058-0 | pages=944–950| bibcode=2006EL.....74..944H | s2cid=250761754 }} |
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* {{cite journal | |
* {{cite journal | last1=Hamacher | first1=K. | last2=Wenzel | first2=W. | title=Scaling behavior of stochastic minimization algorithms in a perfect funnel landscape | journal=Physical Review E | volume=59 | issue=1 | date=1999-01-01 | issn=1063-651X | doi=10.1103/physreve.59.938 | pages=938–941|arxiv=physics/9810035| bibcode=1999PhRvE..59..938H | s2cid=119096368 }} |
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* {{cite journal | |
* {{cite journal | last1=Wenzel | first1=W. | last2=Hamacher | first2=K. | title=Stochastic Tunneling Approach for Global Minimization of Complex Potential Energy Landscapes | journal=Physical Review Letters | publisher=American Physical Society (APS) | volume=82 | issue=15 | date=1999-04-12 | issn=0031-9007 | doi=10.1103/physrevlett.82.3003 | pages=3003–3007|arxiv=physics/9903008| bibcode=1999PhRvL..82.3003W | s2cid=5113626 }} |
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For parallel tempering: |
For parallel tempering: |
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* {{cite journal | last=Hansmann | first=Ulrich H.E. | title=Parallel tempering algorithm for conformational studies of biological molecules | journal=Chemical Physics Letters | publisher=Elsevier BV | volume=281 | issue=1–3 | year=1997 | issn=0009-2614 | doi=10.1016/s0009-2614(97)01198-6 | arxiv=physics/9710041 | pages=140–150}} |
* {{cite journal | last=Hansmann | first=Ulrich H.E. | title=Parallel tempering algorithm for conformational studies of biological molecules | journal=Chemical Physics Letters | publisher=Elsevier BV | volume=281 | issue=1–3 | year=1997 | issn=0009-2614 | doi=10.1016/s0009-2614(97)01198-6 | arxiv=physics/9710041 | pages=140–150| bibcode=1997CPL...281..140H | s2cid=14137470 }} |
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For continuation methods: |
For continuation methods: |
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* Zhijun Wu. [https://www.osti.gov/servlets/purl/395617 The effective energy transformation scheme as a special continuation approach to global optimization with application to molecular conformation]. Technical Report, Argonne National Lab., IL (United States), November 1996. |
* Zhijun Wu. [https://www.osti.gov/servlets/purl/395617 The effective energy transformation scheme as a special continuation approach to global optimization with application to molecular conformation]. Technical Report, Argonne National Lab., IL (United States), November 1996. |
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For general considerations on the dimensionality of the domain of definition of the objective function: |
For general considerations on the dimensionality of the domain of definition of the objective function: |
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* {{cite journal | last=Hamacher | first=Kay | title=On stochastic global optimization of one-dimensional functions | journal=Physica A: Statistical Mechanics and Its Applications | publisher=Elsevier BV | volume=354 | year=2005 | issn=0378-4371 | doi=10.1016/j.physa.2005.02.028 | pages=547–557}} |
* {{cite journal | last=Hamacher | first=Kay | title=On stochastic global optimization of one-dimensional functions | journal=Physica A: Statistical Mechanics and Its Applications | publisher=Elsevier BV | volume=354 | year=2005 | issn=0378-4371 | doi=10.1016/j.physa.2005.02.028 | pages=547–557| bibcode=2005PhyA..354..547H }} |
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For strategies allowing one to compare deterministic and stochastic global optimization methods |
For strategies allowing one to compare deterministic and stochastic global optimization methods |
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*{{cite journal | last=Sergeyev | first=Ya. D. | last2=Kvasov | first2=D. E. | last3=Mukhametzhanov | first3=M. S. | title=On the efficiency of nature-inspired metaheuristics in expensive global optimization with limited budget | journal=Scientific Reports | publisher=Springer Science and Business Media LLC | volume=8 | issue=1 | date=2018-01-11 | issn=2045-2322 | doi=10.1038/s41598-017-18940-4 | pmid=29323223 | pmc=5765181 | page=453|doi-access=free}} |
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{{refend}} |
{{refend}} |
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== External links == |
== External links == |
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*[ |
*[https://arnold-neumaier.at/glopt.html A. Neumaier’s page on Global Optimization] |
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*[https://www.mat.univie.ac.at/~neum/glopt.html A. Neumaier’s page on Global Optimization] |
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*[http://www.lix.polytechnique.fr/~liberti/teaching/dix/inf572-09/nonconvex_optimization.pdf Introduction to global optimization by L. Liberti] |
*[http://www.lix.polytechnique.fr/~liberti/teaching/dix/inf572-09/nonconvex_optimization.pdf Introduction to global optimization by L. Liberti] |
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*[ |
*[https://archive.org/download/Thomas_Weise__Global_Optimization_Algorithms_Theory_and_Application/book.pdf Free e-book by Thomas Weise] |
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{{Industrial and applied mathematics}} |
{{Industrial and applied mathematics}} |
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{{Mathematical optimization software}} |
{{Mathematical optimization software}} |
Latest revision as of 13:41, 30 January 2024
![]() | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (December 2013) |
Global optimization is a branch of applied mathematics and numerical analysis that attempts to find the global minima or maxima of a function or a set of functions on a given set. It is usually described as a minimization problem because the maximization of the real-valued function is equivalent to the minimization of the function .
Given a possibly nonlinear and non-convex continuous function with the global minima and the set of all global minimizers in , the standard minimization problem can be given as
that is, finding and a global minimizer in ; where is a (not necessarily convex) compact set defined by inequalities .
Global optimization is distinguished from local optimization by its focus on finding the minimum or maximum over the given set, as opposed to finding local minima or maxima. Finding an arbitrary local minimum is relatively straightforward by using classical local optimization methods. Finding the global minimum of a function is far more difficult: analytical methods are frequently not applicable, and the use of numerical solution strategies often leads to very hard challenges.
Applications[edit]
Typical examples of global optimization applications include:
- Protein structure prediction (minimize the energy/free energy function)
- Computational phylogenetics (e.g., minimize the number of character transformations in the tree)
- Traveling salesman problem and electrical circuit design (minimize the path length)
- Chemical engineering (e.g., analyzing the Gibbs energy)
- Safety verification, safety engineering (e.g., of mechanical structures, buildings)
- Worst-case analysis
- Mathematical problems (e.g., the Kepler conjecture)
- Object packing (configuration design) problems
- The starting point of several molecular dynamics simulations consists of an initial optimization of the energy of the system to be simulated.
- Spin glasses
- Calibration of radio propagation models and of many other models in the sciences and engineering
- Curve fitting like non-linear least squares analysis and other generalizations, used in fitting model parameters to experimental data in chemistry, physics, biology, economics, finance, medicine, astronomy, engineering.
- IMRT radiation therapy planning
Deterministic methods[edit]
The most successful general exact strategies are:
Inner and outer approximation[edit]
In both of these strategies, the set over which a function is to be optimized is approximated by polyhedra. In inner approximation, the polyhedra are contained in the set, while in outer approximation, the polyhedra contain the set.
Cutting-plane methods[edit]
The cutting-plane method is an umbrella term for optimization methods which iteratively refine a feasible set or objective function by means of linear inequalities, termed cuts. Such procedures are popularly used to find integer solutions to mixed integer linear programming (MILP) problems, as well as to solve general, not necessarily differentiable convex optimization problems. The use of cutting planes to solve MILP was introduced by Ralph E. Gomory and Václav Chvátal.
Branch and bound methods[edit]
Branch and bound (BB or B&B) is an algorithm design paradigm for discrete and combinatorial optimization problems. A branch-and-bound algorithm consists of a systematic enumeration of candidate solutions by means of state space search: the set of candidate solutions is thought of as forming a rooted tree with the full set at the root. The algorithm explores branches of this tree, which represent subsets of the solution set. Before enumerating the candidate solutions of a branch, the branch is checked against upper and lower estimated bounds on the optimal solution, and is discarded if it cannot produce a better solution than the best one found so far by the algorithm.
Interval methods[edit]
Interval arithmetic, interval mathematics, interval analysis, or interval computation, is a method developed by mathematicians since the 1950s and 1960s as an approach to putting bounds on rounding errors and measurement errors in mathematical computation and thus developing numerical methods that yield reliable results. Interval arithmetic helps find reliable and guaranteed solutions to equations and optimization problems.
Methods based on real algebraic geometry[edit]
Real algebra is the part of algebra which is relevant to real algebraic (and semialgebraic) geometry. It is mostly concerned with the study of ordered fields and ordered rings (in particular real closed fields) and their applications to the study of positive polynomials and sums-of-squares of polynomials. It can be used in convex optimization
Stochastic methods[edit]
Several exact or inexact Monte-Carlo-based algorithms exist:
Direct Monte-Carlo sampling[edit]
In this method, random simulations are used to find an approximate solution.
Example: The traveling salesman problem is what is called a conventional optimization problem. That is, all the facts (distances between each destination point) needed to determine the optimal path to follow are known with certainty and the goal is to run through the possible travel choices to come up with the one with the lowest total distance. However, let's assume that instead of wanting to minimize the total distance traveled to visit each desired destination, we wanted to minimize the total time needed to reach each destination. This goes beyond conventional optimization since travel time is inherently uncertain (traffic jams, time of day, etc.). As a result, to determine our optimal path we would want to use simulation - optimization to first understand the range of potential times it could take to go from one point to another (represented by a probability distribution in this case rather than a specific distance) and then optimize our travel decisions to identify the best path to follow taking that uncertainty into account.
Stochastic tunneling[edit]
Stochastic tunneling (STUN) is an approach to global optimization based on the Monte Carlo method-sampling of the function to be objectively minimized in which the function is nonlinearly transformed to allow for easier tunneling among regions containing function minima. Easier tunneling allows for faster exploration of sample space and faster convergence to a good solution.
Parallel tempering[edit]
Parallel tempering, also known as replica exchange MCMC sampling, is a simulation method aimed at improving the dynamic properties of Monte Carlo method simulations of physical systems, and of Markov chain Monte Carlo (MCMC) sampling methods more generally. The replica exchange method was originally devised by Swendsen,[1] then extended by Geyer[2] and later developed, among others, by Giorgio Parisi.,[3][4] Sugita and Okamoto formulated a molecular dynamics version of parallel tempering:[5] this is usually known as replica-exchange molecular dynamics or REMD.
Essentially, one runs N copies of the system, randomly initialized, at different temperatures. Then, based on the Metropolis criterion one exchanges configurations at different temperatures. The idea of this method is to make configurations at high temperatures available to the simulations at low temperatures and vice versa. This results in a very robust ensemble which is able to sample both low and high energy configurations. In this way, thermodynamical properties such as the specific heat, which is in general not well computed in the canonical ensemble, can be computed with great precision.
Heuristics and metaheuristics[edit]
Other approaches include heuristic strategies to search the search space in a more or less intelligent way, including:
- Ant colony optimization (ACO)
- Simulated annealing, a generic probabilistic metaheuristic
- Tabu search, an extension of local search capable of escaping from local minima
- Evolutionary algorithms (e.g., genetic algorithms and evolution strategies)
- Differential evolution, a method that optimizes a problem by iteratively trying to improve a candidate solution with regard to a given measure of quality
- Swarm-based optimization algorithms (e.g., particle swarm optimization, social cognitive optimization, multi-swarm optimization and ant colony optimization)
- Memetic algorithms, combining global and local search strategies
- Reactive search optimization (i.e. integration of sub-symbolic machine learning techniques into search heuristics)
- Graduated optimization, a technique that attempts to solve a difficult optimization problem by initially solving a greatly simplified problem, and progressively transforming that problem (while optimizing) until it is equivalent to the difficult optimization problem.[6][7][8]
Response surface methodology-based approaches[edit]
- IOSO Indirect Optimization based on Self-Organization
- Bayesian optimization, a sequential design strategy for global optimization of black-box functions using Bayesian statistics[9]
See also[edit]
- Deterministic global optimization
- Multidisciplinary design optimization
- Multiobjective optimization
- Optimization (mathematics)
Footnotes[edit]
- ^ Swendsen RH and Wang JS (1986) Replica Monte Carlo simulation of spin glasses Physical Review Letters 57 : 2607–2609
- ^ C. J. Geyer, (1991) in Computing Science and Statistics, Proceedings of the 23rd Symposium on the Interface, American Statistical Association, New York, p. 156.
- ^ Marco Falcioni and Michael W. Deem (1999). "A Biased Monte Carlo Scheme for Zeolite Structure Solution". J. Chem. Phys. 110 (3): 1754–1766. arXiv:cond-mat/9809085. Bibcode:1999JChPh.110.1754F. doi:10.1063/1.477812. S2CID 13963102.
- ^ David J. Earl and Michael W. Deem (2005) "Parallel tempering: Theory, applications, and new perspectives", Phys. Chem. Chem. Phys., 7, 3910
- ^ Y. Sugita and Y. Okamoto (1999). "Replica-exchange molecular dynamics method for protein folding". Chemical Physics Letters. 314 (1–2): 141–151. Bibcode:1999CPL...314..141S. doi:10.1016/S0009-2614(99)01123-9.
- ^ Thacker, Neil; Cootes, Tim (1996). "Graduated Non-Convexity and Multi-Resolution Optimization Methods". Vision Through Optimization.
- ^ Blake, Andrew; Zisserman, Andrew (1987). Visual Reconstruction. MIT Press. ISBN 0-262-02271-0.[page needed]
- ^ Hossein Mobahi, John W. Fisher III. On the Link Between Gaussian Homotopy Continuation and Convex Envelopes, In Lecture Notes in Computer Science (EMMCVPR 2015), Springer, 2015.
- ^ Jonas Mockus (2013). Bayesian approach to global optimization: theory and applications. Kluwer Academic.
References[edit]
Deterministic global optimization:
- R. Horst, H. Tuy, Global Optimization: Deterministic Approaches, Springer, 1996.
- R. Horst, P.M. Pardalos and N.V. Thoai, Introduction to Global Optimization, Second Edition. Kluwer Academic Publishers, 2000.
- A.Neumaier, Complete Search in Continuous Global Optimization and Constraint Satisfaction, pp. 271–369 in: Acta Numerica 2004 (A. Iserles, ed.), Cambridge University Press 2004.
- M. Mongeau, H. Karsenty, V. Rouzé and J.-B. Hiriart-Urruty, Comparison of public-domain software for black box global optimization. Optimization Methods & Software 13(3), pp. 203–226, 2000.
- J.D. Pintér, Global Optimization in Action - Continuous and Lipschitz Optimization: Algorithms, Implementations and Applications. Kluwer Academic Publishers, Dordrecht, 1996. Now distributed by Springer Science and Business Media, New York. This book also discusses stochastic global optimization methods.
- L. Jaulin, M. Kieffer, O. Didrit, E. Walter (2001). Applied Interval Analysis. Berlin: Springer.
- E.R. Hansen (1992), Global Optimization using Interval Analysis, Marcel Dekker, New York.
For simulated annealing:
- Kirkpatrick, S.; Gelatt, C. D.; Vecchi, M. P. (1983-05-13). "Optimization by Simulated Annealing". Science. 220 (4598). American Association for the Advancement of Science (AAAS): 671–680. Bibcode:1983Sci...220..671K. doi:10.1126/science.220.4598.671. ISSN 0036-8075. PMID 17813860. S2CID 205939.
For reactive search optimization:
- Roberto Battiti, M. Brunato and F. Mascia, Reactive Search and Intelligent Optimization, Operations Research/Computer Science Interfaces Series, Vol. 45, Springer, November 2008. ISBN 978-0-387-09623-0
For stochastic methods:
- A. Zhigljavsky. Theory of Global Random Search. Mathematics and its applications. Kluwer Academic Publishers. 1991.
- Hamacher, K (2006). "Adaptation in stochastic tunneling global optimization of complex potential energy landscapes". Europhysics Letters (EPL). 74 (6). IOP Publishing: 944–950. Bibcode:2006EL.....74..944H. doi:10.1209/epl/i2006-10058-0. ISSN 0295-5075. S2CID 250761754.
- Hamacher, K.; Wenzel, W. (1999-01-01). "Scaling behavior of stochastic minimization algorithms in a perfect funnel landscape". Physical Review E. 59 (1): 938–941. arXiv:physics/9810035. Bibcode:1999PhRvE..59..938H. doi:10.1103/physreve.59.938. ISSN 1063-651X. S2CID 119096368.
- Wenzel, W.; Hamacher, K. (1999-04-12). "Stochastic Tunneling Approach for Global Minimization of Complex Potential Energy Landscapes". Physical Review Letters. 82 (15). American Physical Society (APS): 3003–3007. arXiv:physics/9903008. Bibcode:1999PhRvL..82.3003W. doi:10.1103/physrevlett.82.3003. ISSN 0031-9007. S2CID 5113626.
For parallel tempering:
- Hansmann, Ulrich H.E. (1997). "Parallel tempering algorithm for conformational studies of biological molecules". Chemical Physics Letters. 281 (1–3). Elsevier BV: 140–150. arXiv:physics/9710041. Bibcode:1997CPL...281..140H. doi:10.1016/s0009-2614(97)01198-6. ISSN 0009-2614. S2CID 14137470.
For continuation methods:
- Zhijun Wu. The effective energy transformation scheme as a special continuation approach to global optimization with application to molecular conformation. Technical Report, Argonne National Lab., IL (United States), November 1996.
For general considerations on the dimensionality of the domain of definition of the objective function:
- Hamacher, Kay (2005). "On stochastic global optimization of one-dimensional functions". Physica A: Statistical Mechanics and Its Applications. 354. Elsevier BV: 547–557. Bibcode:2005PhyA..354..547H. doi:10.1016/j.physa.2005.02.028. ISSN 0378-4371.
For strategies allowing one to compare deterministic and stochastic global optimization methods