मराठी

Overview of Assignment Problem and Sequencing

Advertisements

Topics

Estimated time: 12 minutes
Maharashtra State Board: Class 12

Definition: Assignment Problem

The assignment problem is a special type of problem which deals with the allocation of various resources to various activities on a one-to-one basis.

Maharashtra State Board: Class 12

Key Points: Hungarian Method

The Hungarian Method is an optimisation algorithm that solves an Assignment Problem. 

Step 1: Row Reduction

Step 2: Column Reduction

Step 3: Assignment

Step 4: Cover Zeros

Step 5: Create Additional Zeros

Maharashtra State Board: Class 12

Definition: Unbalanced Assignment Problem

An unbalanced assignment problem is one in which the number of resources is not equal to the number of activities i.e. the cost matrix of an assignment problem is not a square matrix (no. of rows ≠ no. of columns).

Maharashtra State Board: Class 12

Definition: Maximization Problem

A maximization assignment problem is an assignment problem in which the objective is to maximize total profit, revenue, or effectiveness instead of minimizing cost.

This conversion to a minimisation problem can be done in either of the following ways: 

  1. Subtracting all elements of the matrix from the largest element in the matrix, or
  2. Multiplying all the elements of the matrix by -1.
Maharashtra State Board: Class 12

Definition: Restricted Assignment Problem

An assignment problem involving restrictions on allocation due to personal, technical, legal or other reasons is called a restricted assignment problem.

Maharashtra State Board: Class 12

Definition: Alternative Optimal Solution

An alternate (multiple) solution exists for an assignment problem when the final assignment matrix contains more than the required number of zeros. 

Maharashtra State Board: Class 12

Definition: Sequencing Problem

A sequencing problem is a problem in which the order or sequence of processing a set of jobs on one or more machines is to be determined so as to minimize the total processing time or overall completion time.

Maharashtra State Board: Class 12

Key Points: Types of Sequencing Problems

  • n jobs on 2 machines
  • n jobs on 3 machines

  • 2 jobs on m machines

Maharashtra State Board: Class 12

Definition: Total Elapsed Time

It is the time required to complete all the jobs, i.e. the entire task.

or

The total elapsed time is the time between the beginning of the first job on the first machine till the completion of the last job on the last machine.

Maharashtra State Board: Class 12

Definition: Idle Time

Idle time is the time when a machine is available but not being used, i.e. the machine is available but is waiting for a job to be processed.

Advertisements
Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×