Ask Your Question
0

What is the process for implementing this LP logic using PULP?

asked 2021-04-18 11:00:00 +0000

devzero gravatar image

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted
1

answered 2021-11-29 19:00:00 +0000

ladyg gravatar image

The process for implementing Linear Programming (LP) logic using PULP can be broken down into the following steps:

  1. Import the required libraries: Firstly, import the required libraries such as PULP and Pandas.

  2. Create the LP problem: Create a problem instance using the LpProblem function of PULP. The objective function and constraints can be added to this problem instance.

  3. Define the decision variables: Define the decision variables using the LpVariable function. These variables should be added to the problem instance.

  4. Define the objective function: Define the objective function using the lpSum function. This function should include the decision variables and their respective coefficients.

  5. Add the constraints: Add constraints to the problem instance using the += operator. The constraints should be written as inequalities, with the variables and their coefficients.

  6. Solve the LP problem: Call the solve() function on the problem instance to solve the LP problem.

  7. Print the results: Print the results of the LP problem, including the optimal objective value and the values of the decision variables.

Example code for implementing LP logic using PULP:

import pulp as lp
import pandas as pd

# Define the LP problem instance
prob = lp.LpProblem("LP Problem", lp.LpMaximize)

# Define the decision variables
x = lp.LpVariable('x', lowBound=0, cat='Continuous')
y = lp.LpVariable('y', lowBound=0, cat='Continuous')

# Define the objective function
prob += lp.lpSum([3*x + 5*y])

# Add the constraints
prob += lp.lpSum([2*x + y]) <= 100
prob += lp.lpSum([x + 2*y]) <= 120
prob += lp.lpSum([x]) <= 60
prob += lp.lpSum([y]) <= 40

# Solve the LP problem
prob.solve()

# Print the results
print("Optimal Objective Value: ", lp.value(prob.objective))
print("Value of x: ", lp.value(x))
print("Value of y: ", lp.value(y))

This example code defines an LP problem instance with two decision variables 'x' and 'y', an objective function with coefficients of 3 and 5 for 'x' and 'y' respectively, and 4 constraints. The LP problem is then solved using PULP and the optimal objective value and values of the decision variables are printed.

edit flag offensive delete link more

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account. This space is reserved only for answers. If you would like to engage in a discussion, please instead post a comment under the question or an answer that you would like to discuss

Add Answer


Question Tools

Stats

Asked: 2021-04-18 11:00:00 +0000

Seen: 9 times

Last updated: Nov 29 '21