Presentation on

Development of

Timetable Generation System [TTGS]

HardikHardik H. kothadiaH. kothadiaBBY :Y :GGuided uided BBY :Y :

Dr. K.M.PatelDr. K.M.Patel( I.B.M. Pune)( I.B.M. Pune)

Presentation Overview

Brief History of the Project

Introduction to the Timetable Generation System [TTGS]

Project Status & Learnings

Next Steps?

Brief History of the Project

In recent years two main approaches seem to have been successful.

• The first approach is based on Local Search Procedures• The second approach is based on Constraint Programming (CP)

The Local Search ProceduresThe local search procedures such as Simulated Annealing, Tabu Search and Genetic Algorithms. These methods express constraints as some cost functions, which are minimized by a Heuristic Search of better solutions in a neighborhood of some initial feasible solution.

The main disadvantages of this approach are :1. The difficulty of taking into account hard constraints2. The need to determine their parameters through experimentation. Although they are good for optimizing the initial feasible solution, theyhave problems with finding it.

The ability to express complex constraints in a simple, declarative way is crucial for introducing the requirements of the colleges and university timetabling problem into the program and is crucial for their successful solution.

The Constraint Programming (CP)The constraints are handled through a system of constraint propagation, which reduces domains of variables, coupled with backtracking search.

The main disadvantages of this approach are :1. The difficulties with expressing soft constraints2. The possible problems with improving the initial feasible solution, which - as a rule - may be determined without difficulties.

Introduction to the Timetable Generation System

[TTGS]

• What is TTGS?

• Flow of Project

• Flow of Data Within Project

Flow of Project

• Get the data• Input the

constraints• Verify all entries• Generate

timetable• Finalize timetable• View timetable• Print / export

timetable

Flow of Data Within Project • Collect data from

data store• Initialize Timetable• Perform Allocation• Generation of

Timetable• Formatting of

Timetable

Project Status & Learning

Status of Project

• Project Stage-1 – Analysis of Project – Requirements of Projects (S/W and H/W)– Planning– Documentation

It Consist Of Scheduling Of Lectures And Rooms

Based On Strong Constraints and Weak Constraints in given Time Slots

Strong Constraint

A classroom is not assigned to more than one lecture at the same time.

Weak Constraint

There should be break after 2 hrs

A teacher can take maximum 3 lectures a day

Teachers ListTeachers List

ARSARSSSCSSCSRPSRPSMVSMVSHBSHB

DSPDSPADMPADMP

ISISMCMCSESE

Subjects ListSubjects List

R1R1R2R2R3R3R4R4

Rooms ListRooms List

8:30-9:30 8:30-9:30 ....

2:30-3:302:30-3:303:30-4:303:30-4:304:30-5:304:30-5:30

Years ListYears List

IIIIIIIIIIIIIVIV

Time Slots ListTime Slots List Days ListDays List

MonMonTueTueWedWedThuThuFriFri

IIIIIIIIIIIIIVIV

MonMonTueTueWedWedThuThuFriFri

8:30-9:30 8:30-9:30 ....

2:30-3:302:30-3:303:30-4:303:30-4:304:30-5:304:30-5:30

R1R1R2R2R3R3R4R4

DSPDSPADMPADMP

ISISMCMC

ARSARSSSCSSCSRPSRPSMVSMVSHBSHB

Teachers List Subjects List Rooms ListRooms List

Years ListYears ListTime Slots ListTime Slots List Days ListDays List

Constraints MatrixConstraints Matrix

Next Steps?

Next Steps?

• Actual Implementation – Interface design– Code– Test for some e.g.– Feedback– Prepare Final Product

References1. Michael R. Garey and David S. Johnson. Computers and

intractability: a guide to the theory of NP-completeness. 1979. BP Romero.

Examination Scheduling in a Large Engineering School: A Computer-Assisted Participative Procedure, volume 12 of 17-23. Industrial Organization Department, Industrial Engineering Technical School,

Madrid, Spain, April 1982.2. Google Web Toolkit. http://en.wikipedia.org/wiki/google web toolkit http://code.google.com/webtoolkit/resources.html http://code.google.com/webtoolkit/gettingstarted.html http://googlewebtoolkit.blogspot.com/2007/12/developing-

gwtapplicationswith.html.3. XML Tutorial. http://www.w3schools.com/xml/ http://en.wikipedia.org/wiki/xml.

Timetabling The Stress Free Way !

Timetable Generation System

Thank You !

Hardik KothadiaHardik KothadiaR.K.UniversityR.K.University