CSCI 4150 Lecture on Heuristic Search

CSCI 4150 Lecture on Heuristic Search - Articial...

Info icon This preview shows pages 1–7. Sign up to view the full content.

Artificial Intelligence: Heuristic search Thomas Trappenberg September 17, 2009 Based on the slides provided by Russell and Norvig, Chapter 4, Section 1–2,(4)
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Romania with step costs in km Bucharest Giurgiu Urziceni Hirsova Eforie Neamt Oradea Zerind Arad Timisoara Lugoj Mehadia Dobreta Craiova Sibiu Fagaras Pitesti Rimnicu Vilcea Vaslui Iasi Straight−line distance to Bucharest 0 160 242 161 77 151 241 366 193 178 253 329 80 199 244 380 226 234 374 98 Giurgiu Urziceni Hirsova Eforie Neamt Oradea Zerind Arad Timisoara Lugoj Mehadia Dobreta Craiova Sibiu Fagaras Pitesti Vaslui Iasi Rimnicu Vilcea Bucharest 71 75 118 111 70 75 120 151 140 99 80 97 101 211 138 146 85 90 98 142 92 87 86
Image of page 2
Greedy search Evaluation function h ( n ) ( h euristic) = estimate of cost from n to the closest goal E.g., h SLD ( n ) = straight-line distance from n to Bucharest Greedy search expands the node that appears to be closest to goal
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Greedy search example Arad 366
Image of page 4
Greedy search example Zerind Arad Sibiu Timisoara 253 329 374
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Greedy search example Rimnicu Vilcea Zerind Arad Sibiu Arad Fagaras Oradea Timisoara 329 374 366 176 380 193
Image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.
  • Fall '09
  • ThomasTrappenberg
  • Artificial Intelligence, Romania, Municipalities of Romania, Counties of Romania, Rimnicu Vilcea, Sibiu, Arad

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern