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Questions tagged [multi-stage]

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0 votes
1 answer
41 views

How can I write the output stream of SDDP.jl into an excel file?

I am using SDDP.jl for my research project in which I am developing a state-of-the-art actor critic algorithm which I am going to benchmark with SDDP but for it I need to plot graphs which require ...
Engr. Moiz Ahmad's user avatar
1 vote
1 answer
145 views

Is stochastic dual dynamic programming (SDDP) a deterministic solution algorithm or does it have a stochastic component to it?

I am currently working on a paper in which I am statistically comparing dynamic optimization algorithms like SDDP, Actor-Critics etc. In this regard, should I be running SDDP algorithm for my ...
Engr. Moiz Ahmad's user avatar
1 vote
1 answer
93 views

Can stochastic dual dynamic programming algorithm (or any variant of it) handle multi-stage optimization problems with here-and-now uncertainty nodes?

Stochastic dual dynamic programming (SDDP) algorithm solves stage-wise optimization problem through sampling scenarios. In this regard, it is obvious to see that wait-and-see uncertainty can be easily ...
Engr. Moiz Ahmad's user avatar
1 vote
1 answer
71 views

Connected optimization problems

I'm working on a set of interconnected problems and I'm not sure how I can solve across the connection. First, a set of variables, $x$, is solved using the following: $$\max_{x}f(x)$$ Subject to: $$w^...
dmbeledo's user avatar
2 votes
1 answer
67 views

In the context of risk-averse multi-stage programming and scheduling of resources consumption, is it always optimum to most risky resource first?

In the case of multiple stages with risk averse decision maker, there can be a decision situation where multiple resources has to be scheduled for consumption. These resources can have varying degree ...
Engr. Moiz Ahmad's user avatar
1 vote
0 answers
71 views

Multi-Stage Stochastic Decomposition

I have a multi-stage model with both binary and continuous first-stage investment variables and continuous operational next-stage variables: $$ \sum_{s} \rho_{s} \left[ x_{s} + y_{s} + \sum_{t}(y^{op}...
Ahmed's user avatar
  • 113
2 votes
1 answer
148 views

multi stage stochastic programming algorithm

I have a multi-stage stochastic programming model. I have 3 groups of variables: the first group takes values at the beginning of the planning horizon before the first realization and does not change ...
mahgol's user avatar
  • 21
3 votes
1 answer
429 views

Multi period inventory / reordering MILP in PULP

I'm trying to optimize reorder quantities for $n$ products over $m$ periods in PuLP. The total reorder quantity should fill a container. I've never worked with multiple periods before, and I can't get ...
Jan's user avatar
  • 83
2 votes
0 answers
312 views

What is the intuition behind Progressive hedging algorithm?

I am reading some papers about PHA to solve multi-stage stochastic programming, but I think it is not still clear to me. This is my understanding and I would be thankful to know if it is correct or ...
Amin's user avatar
  • 2,160
2 votes
0 answers
812 views

How to write nonanticipativity constraints?

In Multi-stage stochastic programming, we write the constraints that for scenarios $s$ and $s^{\prime}$ which have the same trajectory up to time $t$, should take the same value. That is, $$ x_{t,s} =...
Amin's user avatar
  • 2,160