LEKIN -- Scheduling System

LEKIN® � Flexible Job-Shop Scheduling System

Announcement: The version that can be downloaded has been upgraded
and allows now for 50 jobs, 20 work centers and 100 machines.

LEKIN® is a scheduling system developed at the Stern School of Business, NYU. Major parts of the system were designed and coded by Columbia University students. LEKIN® was created as an educational tool with the main purpose of introducing the students to scheduling theory and its applications. Besides that, the system�s extensibility allows (and encourages) to use it in algorithm development. The project has been directed by Professor Michael L. Pinedo, Professor Xiuli Chao and Professor Joseph Leung. This development has been partially supported by the National Science Foundation.

With your comments and suggestions, you are always welcome to contact Michael Pinedo or Andrew Feldman. Before reporting a bug, please download the newest version and make sure that this bug has not been fixed yet.

Download the latest version of LEKIN®

Developed for

Features

6 basic workspace environments: single machine, parallel machines, flow shop, flexible flow shop, job shop, and flexible job shop.

A set of sample problems.

More than 60 standard benchmark problems from different sources (not available in the free version).

Smooth input of user problems.

Various dispatching rules and heuristics.

Gantt Chart with drag-and-drop support.

Graphic tool for comparative analysis of different schedules.

Complete graphic printouts.

Easy attachment, import and export of external algorithms.

System requirements

IBM PC compatible;

Windows 95, 98 or Windows NT 4.0;

3 MB hard disk space;

8 MB RAM (16 MB recommended);

1 MB video RAM (2 MB recommended).

Screen Shots

Data Entry (98K)	Full Screen (211K)
Gantt Chart (139K)	Objective Chart (133K)

Authors

Supervised by

	Michael Pinedo	Department of Information, Operations & Management Sciences - OM Group New York University, Leonard N. Stern School of Business New York, NY
	Xiuli Chao	Department of Industrial Engineering North Carolina State University Raleigh, NC
	Joseph Leung	Department of Computer Science New Jersey Institute of Technology, Newark, NJ

Programmed by

Andrew Feldman

Paradigm Asset Management Company
New York, NY

Algorithms by

	Nutthapol Asadathorn	Dept. of Industrial and Manufacturing Engineering, New Jersey Institute of Technology, Newark, NJ
	Stephan Kreipl	Senior Consultant Supply Chain Management SAP Deutschland AG & Co. KG
	Marcos Singer	Escuela de Administración Pontificia Universidad Católica de Chile Partially supported by FONDECYT 1971021
	Alkis Vazacopoulos	Director, Dash Optimization, Inc. USA
	Ya Yang	We are very saddened by the accident that claimed the life of our colleague and friend, Ya Yang. She was a great person and a talented scholar. In our hearts, she will always be with us. LEKIN® team.

The authors would like to thank Rungson Samroengraja, Manish Choudhury, Melanie Drake, Jenny Poon and other students of Operations Consulting class, Spring 1998, Stern School of Business, NYU for extensive testing and useful comments that helped debugging and improving LEKIN®.

The Academic version of LEKIN® is available for download. The Industrial version of the system is in the design stage.

Download April 2002 version of LEKIN®

Download the latest version of LEKIN® (October, 2010)