CS 719: Network Flows - Spring 1997
Lecture: 8:50 - 9:40 MWF, 1257 CS&S
Start at 8:30 throughout February
No classes: Friday 14 March, Monday 17 March,
Wednesday 19 March, Friday 21 March.
Course E-mail: firstname.lastname@example.org
Office: 4381 CS&S
Office Hours: 11:00 - 1:00 Mondays
Office: 6393 CS&S
Office Hours: 2:00 - 3:30 Wednesdays and
1:00 - 2:00 Thursdays
General Course Information
By taking advantage of the special structure of linear network
optimization problems, a "graphical" version of the simplex method is
developed. This "network simplex method" is about 100 times faster
than the ordinary simplex method, and has nice integrality properties
that allow the solution of some combinatorial problems such as
assignment, matching, and min cut problems. Variants of the network
simplex method are also presented for convex, non-convex, generalized,
and multicommodity networks. Some alternative new methods with good
complexity bounds will also be considered. Particular applications in
operations research, business and the sciences will be discussed. The
solution of large scale problems using state of the art packages will
also be demonstrated and used in the course.
Prerequisite CS 525 or Knowledge of Linear Programming
- Course Outline
- Paths, Trees and Cycles (Data Structures)
- Shortest Paths
- Max Flow
- Min Cost
- Network Simplex Method
- Generalized Flows (Convex, equilibria)
- Lagrangian Relaxation
- Multicommodity Flows
- Homework assignments: 40% of grade
- Project assignment: 20% of grade (due in class, Wednesday May 7)
- Final examination: 40% of grade (Monday May 12, 2:45 - 4:45, CS 1289)
Some representative exam questions can be found in
Old exam questions.
- Network Flows, Ravindra K. Ahuja, Thomas Magnanti and James Orlin, Prentice Hall.
Other Useful Texts:
- Linear Programming, V. Chvatal, Freeman, 1980.
- Linear Network Optimization, D. Bertsekas, MIT Press, 1991.
Homework 1 (due Friday January 31, 1997).
Homework 2 (due Friday February 7, 1997).
Homework 3 (due Friday February 14, 1997).
Homework 4 (due Friday February 21, 1997).
Homework 5 (due Friday February 28, 1997).
Homework 6 (due Friday March 7, 1997).
Homework 7 (due Wednesday April 2, 1997).
Homework 8 (due Friday April 4, 1997).
Homework 9 (due Friday April 11, 1997).
Homework 10 (due Friday April 18, 1997).
Homework 11 (due Friday April 25, 1997).
Homework 12 (due Friday May 2, 1997).
Homework 13 (due Friday May 9, 1997).
- Unix Orientation Sessions
Unix Orientation sessions will be held as follows:
Wednesday Jan 22 5pm, 6pm
Thursday Jan 23 5pm, 6pm
Monday Jan 27 5pm, 6pm
Tuesday Jan 28 5pm, 6pm
Wednesday Jan 29 5pm, 6pm
Thursday Jan 30 5pm, 6pm
Room 2310 CS
The orientation session includes a 20 minute video tape and
30-45 minute hands-on session in the user rooms. New Unix users
are strongly encouraged to attend.
- Account Initialization
Registered students who had a CSL Unix account last semester
have the same account this semester. They should be able to
login using the same login name and password as last semester.
Registered students who had a vectra lab account (for CS 110 or
CS 302) have the same login name and password on the Unix
Registered students who did not have an account last semester
should initialize their account by logging in to a Unix
workstation as user "newuser". There are signs in the user
rooms explaining how to use newuser, and running newuser is
including in the Unix Orientation hands-on session.
NOTE: We add accounts for students every afternoon based on
registration information from the registrar's
database. Newly created accounts are active as of the next
There may be an additional delay between the time the
student registers via touch-tone and when the data is
avaliable to us.
Introduction to UNIX at UW
To set up your login so that you have access to GAMS:
> cp ~cs719-1/public/.cshrc.local ~/.cshrc.local
> source ~/.cshrc.local
This alters your path and sets up the GAMS directory appropriate
for solaris machines on it.
- Course Machines SOL lab, 1370 CS&S
Mathematical Programming at UW
This page was updated January 21, 1997