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  • ...) problems<span style="font-size: 8pt; position:relative; bottom: 0.3em;">[1]</span>. ECP can be thought as an extension of Kelley's cutting plane metho '''Step 0.''' Set k=1. Leave out all nonlinear constraints and set up an MILP problem. ...
    7 KB (1,123 words) - 11:36, 1 April 2022
  • ...ng problems by using cutting planes in the late fifties and early sixties (1). \sum_{j}a_{i,j} x_j \leq b_i \qquad x_j \in \{0,1\} </math> ...
    13 KB (1,990 words) - 23:07, 13 December 2020
  • </math> (11) The explicit ODE discretization holds little computational advantage becau ...
    12 KB (1,804 words) - 11:35, 1 April 2022
  • <math >~~~~~~~~~~y_{1},y_{2} \in \big\{0,1\big\}^{t} </math><br> ...play=inline>y^{1}</math>. Set the iteration counter <math display=inline>K=1</math>. Initialize the lower bound <math display=inline>Z_{L}=-\infty</math ...
    18 KB (2,660 words) - 00:12, 16 December 2021
  • ...le f(x), \\ yf(x) + \tfrac{1}{2}c[f(x)]^2, & \text{if } -y/c \le f(x) \le (1-y)/c \\ -y^2/2c, & \text{if } f(x) \le -y/c \end{cases} </math> <br/> <math> 0 \le y \le 1, 0 < c </math> <br/> ...
    10 KB (1,540 words) - 11:04, 1 April 2022
  • ...variability in the parameters of the problem at hand and or its solution [1]. In robust optimization, the modeler aims to find decisions that are optim '''1. Ignorance''' - such as not knowing exactly how much oil is in a reserve <b ...
    4 KB (641 words) - 11:35, 1 April 2022
  • ...{1},x_{2} </math> and multiplying them by their weights to obtain <math>w_{1}, w_{2} </math>. All of the weights will be added up together to create the <math>w_{ij}(t+1) = w_{ij}(t) - \epsilon \frac{\partial E}{\partial w_{ij}}(t)</math> ...
    11 KB (1,678 words) - 07:05, 21 December 2020
  • ...gative, but the coefficient <math>c</math> can only be positive<ref name=":1">S. Boyd, L. Vandenberghe, ''Convex Optimization''. Cambridge University Pr ...unction, or a posynomial, is defined as: <math>f(x)</math> = <math>\sum_{k=1}^K</math><math>c_kx_1^{a_{1k}}</math><math>x_2^{a_{2k}}</math>...<math>x_n^ ...
    12 KB (1,793 words) - 15:40, 11 December 2021
  • ...<ref>Bradley, Stephen P. Applied Mathematical Programming. Addison-Wesley. 1 February 1977. 320-342. 18 Nov 2020</ref> Such a standard framework is used '''Step 1: Specify the stages of the problem''' <br /> ...
    10 KB (1,508 words) - 07:35, 21 December 2020
  • ...iteration of Newton's method is usually written as: <math>x_{k+1}=x_k-H^{-1}\cdot\bigtriangledown f(x_k) </math>, where <math>k </math> is the iterati ...th>{df \over dx}=0, ||\bigtriangledown f(x)||<\epsilon \text{ or } |f(x_{k+1})-f(x_k)|<\epsilon </math> ...
    17 KB (2,716 words) - 06:21, 21 December 2020
  • <math>f_1(x) \le M\ast(1-y_1)</math> <math>f_2(x) \le M\ast(1-y_2)</math> ...
    14 KB (2,269 words) - 23:06, 15 December 2021
  • ...Any given value <math>x'</math> between <math>x_{i}</math> and <math>x_{i+1}</math> can be written as the following form: <math>x'= \lambda x_{i}+(1-\lambda )x_{i+1}</math> (1) ...
    13 KB (2,046 words) - 16:29, 15 December 2021
  • ...c programs.<span style="font-size: 8pt; position:relative; bottom: 0.3em;">1,2,3</span> :<math>s.t. ~~ f_i(x) \le 1, i = 1,...,m </math> ...
    14 KB (2,287 words) - 11:33, 1 April 2022
  • <math>L(x, \lambda ) = f(x) + \sum_{i=1}^{p}\lambda _{i}\cdot a_{i}(x)</math> <br> <math>\left [ \frac{\partial g(x)}{\partial x_{1}} ..... \frac{\partial g(x)}{\partial x_{n}}\right ]^{T} = \left [ 0 ... 0 ...
    15 KB (2,356 words) - 07:31, 21 December 2020
  • ...l moving average of gradients and square gradients. And the parameters of β1 and β2 are used to control the decay rates of these moving averages. Adam '''''<math>w_t+1=w_t-update</math>''''' ...
    12 KB (1,992 words) - 15:19, 16 December 2021
  • ...'Posynomial''' functions are defined as positive polynomials. <ref name =":1"> S. Boyd, S. J. Kim, and L. Vandenberghe ''et al.'', [https://doi.org/10.1 s.t. & \quad f_i(x) \leq 1 \quad i = 1,....,m \\ ...
    13 KB (1,943 words) - 00:06, 15 December 2021
  • ...on corresponding to every extreme point in the feasible region.<ref name=":1">Vanderbei, R. J. (2000). ''Linear programming: Foundations and extensions' ...l Engineering. Springer, New York, NY. <nowiki>https://doi.org/10.1007/978-1-4757-4106-3_8</nowiki></ref> ...
    16 KB (2,414 words) - 08:26, 5 October 2021
  • </math> non-linear programming (NLP) problems<sup>1</sup>. Optimization of these non-convex functions f(x) is challenging since [[File:Image of updated estimators and envelopes.png|thumb|Figure 1: Relationships between the given function, concave over-estimators, convex ...
    10 KB (1,703 words) - 08:21, 12 December 2021
  • ...70s. <ref name="two"> J. Rubin, [https://www.jstor.org/stable/25767684?seq=1 "A Technique for the Solution of Massive Set Covering Problems, with Applic <math> y_i = \begin{cases} 1, & \text{if subset }i\text{ is selected} \\ 0, & \text{otherwise } \end{cas ...
    27 KB (4,056 words) - 07:36, 21 December 2020
  • ...t of actions and states available and the decision making frequency.<math>^1</math> This article will focus on discrete MDPs with finite states and fini ...lements: the agent, states, a model, actions, rewards, and a policy.<math>^1</math> The agent is the object or system being controlled that has to make ...
    17 KB (2,650 words) - 07:34, 21 December 2020
  • ...ed to find the deterministic solution of global optimization problems.<sup>1</sup> It is a type of branch-and-bound method, which solves for the set of {| border="1" class="wikitable" ...
    15 KB (2,490 words) - 11:33, 1 April 2022
  • ...nd it influenced the development of the [[Adam|Adam algorithm]]<ref name=":1">Kingma, D. P., & Ba, J. (2014). Adam: A method for stochastic optimization ...t of all previous subgradients, given by <math display="inline">\sum_{\tau=1}^t g_{\tau}g_{\tau}^{\top} ...
    16 KB (2,546 words) - 22:03, 14 December 2021
  • ...or old and hot or cold, because exact boundaries do not necessarily exist [1]. ...ue is mapped to a degree of membership (u) between the two extremes, 0 and 1. Membership functions can be several different types of functions. However, ...
    12 KB (2,057 words) - 07:40, 21 December 2020
  • ...and Bound method with the iterative nature of the Outer Approximation.<sup>1</sup> The addition of Gomory mixed integer cuts as an alternative to branch ...5 by R.J. Dakin to incorporate nonlinear integer problem solutions. <sup>4,1</sup> Branch and bound seemed to be a robust method, however the time requi ...
    13 KB (2,041 words) - 11:41, 1 April 2022
  • ...osed to be the optimal answer of MINLP; otherwise, there is a <math>j\in \{1...p\}</math> with <math>y_j^0\ \nexists\ \Zeta</math> (Cacchiani & D’Ambr <math>y\in0,1 \quad x\in\Chi</math> ...
    12 KB (1,988 words) - 21:56, 14 December 2021
  • ...osed to be the optimal answer of MINLP; otherwise, there is a <math>j\in \{1...p\}</math> with <math>y_j^0\ \nexists\ \Zeta</math> (Cacchiani & D’Ambr <math>y\in0,1 \quad x\in\Chi</math> ...
    12 KB (1,996 words) - 00:58, 16 December 2021
  • ...he method dates back to 1963 and was developed and refined in the 1970's .[1] SQP combines two fundamental algorithms for solving non-linear optimizatio <math>x_{k+1} =</math> <math> x_k - </math> <math>\frac{\nabla f}{\nabla^2 f} </math> <b ...
    14 KB (2,223 words) - 11:42, 1 April 2022
  • -&X + N*(1-Y) \ge C \\ &Y = 0, 1 ...
    17 KB (2,691 words) - 07:31, 21 December 2020
  • ...problem can oftentimes be turned into an easier convex problem.<ref name=":1">S. Boyd, L. Vandenberghe, [https://web.stanford.edu/~boyd/cvxbook/bv_cvxbo <math>s. t.</math> <math>f_i(x)\leq0, i = 1, ..., m</math> ...
    17 KB (2,662 words) - 23:01, 15 December 2021
  • **Set <math>x_{k+1}=x_k+\alpha_k p_k</math> ...e <math>f</math> decrease moving from point <math>x_k</math> to <math>x_{k+1}</math>, and it is usually related to the gradient <math>\nabla f_k</math>. ...
    21 KB (3,311 words) - 06:35, 16 December 2021
  • ...ue means more gradients from the past (history) are considered.<ref name=":1">Bhat, R. (2020, October 22). ''Gradient descent with momentum''. Medium. h ...p. 2227-2232, June 2020, doi: 10.1109/TNNLS.2019.2927689.</ref><ref name=":1" /> Momentum addresses these limitations using exponentially weighted gradi ...
    14 KB (2,078 words) - 20:24, 15 December 2021
  • ...ithm for quadratic programming.] ''Naval Research Logistics Quarterly'', 3(1-2):95–110.</ref> It is also known as the “gradient and interpolation” [[File:Frank-Wolfe algorithm step size.png|thumb|199x199px|'''Figure 1.''' The Frank-Wolfe method optimizes by considering the linearization of th ...
    18 KB (2,857 words) - 22:49, 15 December 2021
  • [[File:WX20211209-162608@2x.png|thumb|Figure 1. A comparison of the convergence of gradient descent (in red) and conjugate <math>F(\textbf{x})=\frac{1}{2}\textbf{x}^{T}\textbf{A}\textbf{x}-\textbf{b}\textbf{x}</math> ...
    32 KB (5,256 words) - 13:15, 13 February 2024
  • <math>m_{k}(p)=f_{k} +\bigtriangledown f_k^Tp + 1/2p^TB_kp</math> <math>f(x_k + p)=f_{k} +\bigtriangledown f_k^Tp + 1/2p^T\bigtriangledown ^2f(x_k + tp)p</math> ...
    18 KB (2,717 words) - 01:18, 16 December 2021
  • ...le, [3, 1, 4, 6, 5, 2] is obtained by swapping the positions of jobs 4 and 1. ...ia of Systems Biology. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-9863-7_412 </ref>: ...
    17 KB (2,646 words) - 07:37, 21 December 2020
  • ...we assume that <math>z</math> is known after the decision of stage <math>n-1</math> has been made and before the decision of stage <math>n</math> has to ...lting from it. The return after <math>N-1</math> stages will be <math>f_{N-1}(z)</math> using the optimal policy. Therefore, we can formulate the expect ...
    41 KB (6,376 words) - 01:10, 16 December 2021
  • ...ignment Problems and the Location of Economic Activities. Econometrica, 25(1), 53-76. doi:10.2307/1907742</ref>, is a mathematical optimization module c <math>N = \big\{1, 2, ...n\big\} </math>. ...
    16 KB (2,581 words) - 00:51, 14 December 2020
  • ...x^{k}:\sum_{k=1}^{K}A^{k}x^{k}=b,x^{k}\epsilon X^{k}\; \; \; for\; \; \; k=1,...,K \right \}</math> ...tains a large but finite set of points <math>\left \{ x^{k,t} \right \}_{t=1}^{T_{k}}</math>, we have that <math>X^{k}=</math>: ...
    26 KB (4,198 words) - 07:37, 21 December 2020
  • ...amming and Its Applications to Energy Management'', 2011.</ref><ref name=":1">A. Geletu, M. Klöppel, H. Zhang, and P. Li, "Advances and applications of ..., the random vector is considered to have a known distribution.<ref name=":1" /> For example, the chance-constraints can take the linear form in the ran ...
    17 KB (2,548 words) - 23:43, 15 December 2021
  • '''Primal'''<blockquote>Maximize <math>z=\textstyle \sum_{j=1}^n \displaystyle c_j x_j</math> </blockquote><blockquote>subject to: ...blockquote></blockquote><blockquote><blockquote><math>x_j\gneq 0 \qquad (j=1, 2, ... ,n) </math></blockquote></blockquote><blockquote> ...
    15 KB (2,308 words) - 10:44, 4 September 2021
  • [[File:matt4.png|thumb|right|350px|Figure 1: Logistic Sigmoid Function]] ...
    9 KB (1,496 words) - 11:30, 1 April 2022
  • ...Neumann is often credited by historians as the Father of Game Theory.<sup>[1][2]</sup> This theory has provided a framework for approaching complex, hig ...er 2 respectively. The below payoff matrix represents the payoff to player 1 in this matrix game. ...
    16 KB (2,700 words) - 07:32, 21 December 2020
  • ...background,<span style="font-size: 8pt; position:relative; bottom: 0.3em;">1</span> and by [http://en.wikipedia.org/wiki/Harry_Markowitz Harry Markowitz <math>\text{min} f(x)=q^{T}x+\frac{1}{2}x^{T}Qx</math> <br/> ...
    16 KB (2,279 words) - 17:32, 12 June 2022
  • [[File:GDP Intro.jpg|none|thumb|523x523px|Figure 1: Generalized Disjunctive Programming Methods<ref>Grossman, Ignacio E: Overv r_{ki}(x) \leq M^{ki}(1-y_{ki})\quad k \in K,i \in D_k\\ ...
    10 KB (1,619 words) - 07:40, 21 December 2020
  • <math>x \in R^n</math>, <math> c_k \in R^1</math>, <math> Y_{jk} \in {true, false}</math><br/> ...ontinuous variables x in the objective function, <math>g:R^n \rightarrow R^1</math> bolongs to the set of global constraints, the disjuctions <math> k\i ...
    17 KB (3,019 words) - 11:37, 1 April 2022
  • ...lications'', 10 Aug. 2016, https://www.ima.umn.edu/materials/2015-2016/ND8.1-12.16/25397/Luedtke-mip-bnc-forms.pdf.</ref>. This methodology is critical <math>x_i = int, i = 1,2,3...,n ...
    11 KB (1,724 words) - 07:38, 21 December 2020
  • ...constrained optimization problem can be depicted as shown in Equation set 1: Now we need to convert this form to the form as shown in Equation set 1. For this the inequality '<math>g(x) \geqslant b</math> ' can be written <m ...
    21 KB (3,328 words) - 09:49, 7 December 2021
  • ...max T(x,y)={c_0+\sum_{i}c_{1,i}m_i+\sum_{j}c_{2,j}y_j \over d_0+\sum_{i}d_{1,i}m_i+\sum_{j}d_{2,j}y_j}\\ s.t.\quad\ a_{0,k}+\sum_{i}a_{1,i}m_i+\sum_{j}a_{2,j}y_j=0,\quad \forall k \in K\\ ...
    25 KB (3,776 words) - 07:38, 21 December 2020
  • ...the supplier's profit based on the given customer demand and location<sup>(1)</sup>. FLP can be further broken down into capacitated and uncapacitated p ...blem to find the geometric median <math>(x,y)</math> is formulated as<sup>(1)</sup> ...
    17 KB (2,648 words) - 07:35, 21 December 2020
  • ...equilibrium, high level games, and modeling of transportation <ref name=":1">M. Ferris, S. Dirkse, and A. Meeraus. [https://faculty.wcas.northwestern.e <u>Step 1:</u> Solve the quadratic programming subproblem at v such that <math>(dx^v, ...
    19 KB (2,954 words) - 17:10, 15 December 2021
  • ...rategy that searches through a large or infinite hypothesis space whenever 1) there are hypotheses continuously being parameterized and 2) the errors ar ...The steps for performing gradient descent are as follows:<blockquote>Step 1: Select a learning rate <math>\alpha</math> ...
    16 KB (2,422 words) - 07:41, 21 December 2020
  • [[File:Figure 1- Efficient Frontier Graph.jpg|thumb|382x382px|Figure 1: Efficient Frontier Graph |alt=]] ...ks, investors typically use an efficient frontier graph as shown in figure 1. ...
    12 KB (1,794 words) - 19:55, 17 December 2021
  • ...outcome of the system, and the entire system is deterministic. <ref name=":1">J. Schif [https://www.eecs.tufts.edu/~aloupis/comp150/projects/Jeremy-S/2s ....197 “Linear Programming under Uncertainty.”] ''Management Science'', vol. 1, no. 3-4, 1955, pp. 197–206. </ref> A significant number of theoretical a ...
    24 KB (3,577 words) - 00:59, 16 December 2021
  • <math>s.t.</math> <math>g(x) \leq 0 </math> <math>(1)</math><br> ...h>{\lambda}\geq 0;</math><math>\sum_i</math><math>{\lambda}</math><math>_i=1</math>} <math>and</math> <math>y>\in Y</math>, <math>x\in X</math>, <math> ...
    21 KB (3,505 words) - 11:38, 1 April 2022
  • ...blems to be solved at the dawn of the 21<sup>st</sup> century. A prize of $1 million has been allocated for anyone that can bring forward a solution.<re ...the number of operations holds constant at 1; for that reason this is an O(1) problem. ...
    12 KB (1,803 words) - 07:30, 21 December 2020
  • ...F_{cost}(T,R) = \min_{P}{P_{cost}(T,R) + S_{cost}(T-1,P:T,R) + F_{cost}(T-1,P)}</math> <math>S_{cost}(T-1,P:T,R) = \text{The transition cost price from state}(T-1,P) \text{ to } (T,R)</math></small><br> ...
    13 KB (1,978 words) - 01:46, 16 December 2021
  • ...nimum cost.<span style="font-size: 8pt; position:relative; bottom: 0.3em;">1</span> ...ative; bottom: 0.3em;">6</span> The GTSP reduces to a TSP if <math>|V_i| = 1 ~\forall~ i</math>.<span style="font-size: 8pt; position:relative; bottom: ...
    30 KB (4,474 words) - 22:47, 25 September 2020
  • ...ref>D. Eep, “F EW -S HOT B AYESIAN O PTIMIZATION K ERNEL S URROGATES,” pp. 1–15, 2021</ref>: ...ators <ref>J. Bergstra, “Algorithms for Hyper-Parameter Optimization,” pp. 1–9.</ref>. ...
    18 KB (2,866 words) - 20:23, 19 December 2021
  • ...'m'' number shared resources, most commonly denoted as machines (''M''<sub>1</sub>, ''M''<sub>2</sub>, ..., ''M<sub>m</sub>'' ). Each job will have oper [[File:Applegate2.png|thumb|'''Figure 1''': A Gantt-Chart representation of the job shop scheduling problem<ref nam ...
    22 KB (3,515 words) - 16:46, 15 December 2021
  • ...neous Devices," in <i>IEEE Transactions on Power Systems</i>, vol. 31, no. 1, pp. 187-197, Jan. 2016, doi: 10.1109/TPWRS.2015.2391233.</ref><ref>Chuen-T ...neous Devices," in <i>IEEE Transactions on Power Systems</i>, vol. 31, no. 1, pp. 187-197, Jan. 2016, doi: 10.1109/TPWRS.2015.2391233.</ref><ref>Chuen-T ...
    32 KB (5,075 words) - 07:41, 21 December 2020
  • ...n 1956, with the network simplex method formulated by George Dantzig.<sup>[1]</sup> A variation of the simplex algorithm that revolutionized linear prog ...e values (demand). Intermediate nodes have no net supply or demand. Figure 1 illustrates this general definition of the network. ...
    37 KB (6,009 words) - 07:33, 21 December 2020
  • Variation 1: <math> n </math> is the position, <math> g(n) </math> is the cost from the ...gineering, 2011, https://doi.org/10.1109/iceice.2011.5777723.</ref> Figure 1 shows the results of the maze experiment using 10 perfect randomly generate ...
    17 KB (2,746 words) - 22:26, 15 December 2021
  • ...ncertainty.<span style="font-size: 8pt; position:relative; bottom: 0.3em;">1</span> The most vital aspect of robust optimization is the determination of P(\mathbf{u}^Tx\leq b\quad \forall \mathbf{u})\geq 1-\delta ...
    13 KB (1,867 words) - 11:18, 1 April 2022
  • ...\mathbb{R}^{M}</math> is a compressed measurement vector, <math>[ M ] = \{ 1, \dots , M \} </math>, <math>e \in \mathbb{R}^{M}</math> is a noise vector .../math> if for all <math>x \in \Sigma_k</math> has a <math>\delta_k \in [0, 1)</math>. A restricted isometry constant (RIC) of <math>A</math> is the smal ...
    42 KB (6,094 words) - 21:46, 22 October 2023
  • ....png|thumb|Payoffs for two players in Prisoner's Dilemma game. <ref name=":1" />|283x283px]] ...is profile because the player who remains silent is worse off. <ref name=":1">S. Woodcock, “The legacy of John Nash and his equilibrium theory,” ''T ...
    17 KB (2,809 words) - 12:02, 15 December 2021
  • .... M. “Inventory Control and Price Theory.” Management Science, vol. 2, no. 1, 1955, pp. 61–68.</ref> To do so he formulated a newsvendor model with pr ...trated by the formula <math>n=F^{-1} ({s-w \over s})</math> where ''F<sup>-1</sup>'' is the inverse of the cumulative distribution function of R.<ref na ...
    14 KB (2,125 words) - 07:36, 21 December 2020
  • ...il surface to domain boundary. Image taken from Schramm et. al.<ref name=":1" />]] ...f the shape to the boundary of the domain which the cells move.<ref name=":1">Schramm, Matthias & Stoevesandt, Bernhard & Peinke, Joachim. (2018). Optim ...
    18 KB (2,687 words) - 00:59, 16 December 2021
  • 1. Akgul, M. "Topics in Relaxation and Ellipsoidal Methods", volume 97 of Res ...ce rates of subgradient optimization methods." Mathematical Programming 13.1, 1977. <br/> ...
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