Questions tagged [demand-distribution]

For questions related to probability distributions used to model demands for products or services, e.g., in an inventory or supply chain optimization context.

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114 views

Priority based demand fulfilment in Linear Constraint

Say I have 3 sources. D1, D2, D3. their capacity is 100, 200, 400. I want to create some constraints such that First D1 is depleted then D2 and then D3. But the catch is you cant use min or max ...
60 views

Why the lead-time demand variance is not simply the variance of the product of two independent random variables?

In many text books, I find that the variance of the lead-time demand, if the lead-time and demand are independent random variables is defined as: \begin{align} {\mathrm{var}}[LTD] = \mu_{LT}\cdot\...
100 views

use Forecast distribution width in inventory optimization

I have a demand forecast that gives me a distribution for future demand, for each time period in percentiles (e.g. demand for period 1 will be between 6 and 25 (zero and 100th percentiles, and i know ...
• 83
97 views

Supply chain simulation is not working. Any help please?

I am trying to simulate a supply chain scenario. Demand is random (e.g. between 100-400 units) and lead time vary 2 to 4 days for each supply. The holding cost(h), penalty cost (p) for lost_sales, ...
• 21
89 views

Car rental time series forecasting [closed]

I have the time series of car rentals/demand in a location. The time axis is every hour for 3 months. The y-axis is number of car rentals/demand. I want to do prediction for future hours given this ...
97 views

lsqcurvefit error in simulation of demands in MATLAB

I want to simulate the demand of a factory. This is not a real problem, the demand follows this relation $D= AB^2C^3$ where $A$, $B$ and $C$ have normal distributions: A\sim N(10,2.5),\quad B\sim(6,...
• 55
140 views

PYOMO - Optimization for the daily production of a products demand minimizing the production cost

I am trying to build an optimization model using PYOMO for the daily production of a product demand, minimizing the production cost. I have demand, production capacity (by machine by day), production ...
127 views

Estimating optimal inventory in times of high uncertainty due to coronavirus

I'm trying to help out a relative of mine who runs a small highly seasonal business in the clothing/textiles industry. 80% of sales are in Q1 of every year, and the purchasing and manufacturing ...
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