jgs 564 00000101 Problem Traveling salesman problem (TSP) Given a set of n nodes and distances for each pair of nodes, find a roundtrip of minimal total length visiting each node exactly once.
jgs 564 00000101 Problem Traveling salesman problem (TSP) Given a set of n nodes and distances for each pair of nodes, find a roundtrip of minimal total length visiting each node exactly once.
jgs 564 00000101 Data § Symmetric The distance from node i to node j is the same as from node j to node i. http://www.math.uwaterloo.ca/tsp/world/countries.html 29 cities - 71,009 cities
jgs 564 00000101 Data § Symmetric The distance from node i to node j is the same as from node j to node i. http://www.math.uwaterloo.ca/tsp/world/countries.html 29 - 71009 § Asymmetric The distance from node i to node j and the distance from node j to node i may be different. http://elib.zib.de/pub/mp-testdata/tsp/tsplib/atsp/index.html 17 to 443
jgs 564 00000101 Solution It is an NP-hard problem. Do not worry about an optimal solution Calculate and report the total distance using a greedy algorithm (nearest- neighbors) or any other fancy solution (2-opt, genetic algorithm, etc.) Report the path as a list of city IDs city1, city2, city3, city4, … Do not forget the GUI.
jgs 564 00000101 Solution Do not forget the GUI. For the Symmetric Data, show the dots on the screen. They must look like this (file: IT16862.tsp). View solutions in the “Point Set” link on the data webpage.
jgs 564 00000101 Test Yourselves: Software § Information Hiding... How? § Stepwise refinement… How? § How many modules / functions? Why ? § How they will be connected (who call who? Who needs who?) Why ? § Which is the largest file (symmetric and asymmetric) that your solution can process? Can you improve that? How? § Sequential solution is acceptable, but challenge yourselves to use at least threads (CPU) or go for GPU programming
jgs 564 00000101 Assignment 02 Submit to Canvas (individually or team of 2): a) Source Code (every single java files). b) A PDF file a paper describing § your code and how did you apply Wirth and Parnas ideas a.k.a. functional decomposition and information hiding. § Screenshot with the output for small, medium, and large scenario § A conclusion addressing the quality of your solution PS.1. Showcase your skills for readability (make your code easy to read) PS.2. Include Javadoc
jgs CSE 564 Software Design Javier Gonzalez-Sanchez, Ph.D. [email protected] Fall 2021 Copyright. These slides can only be used as study material for the class CSE564 at ASU. They cannot be distributed or used for another purpose.
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