ผลต่างระหว่างรุ่นของ "Reconstruction problems"

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(ไม่แสดง 1 รุ่นระหว่างกลางโดยผู้ใช้คนเดียวกัน)
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== Materials ==
 
== Materials ==
 
* Graph reconstruction
 
* Graph reconstruction
** [https://en.wikipedia.org/wiki/Graph_realization_problem Graph realization] from [http://mathworld.wolfram.com/DegreeSequence.html Degree sequence] (simple graph case)
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** [https://en.wikipedia.org/wiki/Graph_realization_problem Graph realization] from [http://mathworld.wolfram.com/DegreeSequence.html Degree sequence] (simple graph case).  This case is solvable with the [https://en.wikipedia.org/wiki/Havel%E2%80%93Hakimi_algorithm Havel-Hakimi algorithm] which is a greedy recursive algorithm.
 
*** See also the [https://en.wikipedia.org/wiki/Bipartite_realization_problem bipartite case] and [https://en.wikipedia.org/wiki/Digraph_realization_problem directed graph case].  (Not sure if they are approachable.)
 
*** See also the [https://en.wikipedia.org/wiki/Bipartite_realization_problem bipartite case] and [https://en.wikipedia.org/wiki/Digraph_realization_problem directed graph case].  (Not sure if they are approachable.)
  
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** [http://www.comp.nus.edu.sg/~bioinfo/phylogenetic%20tree%20reconstruction_2_8.pdf part2 - distance based]
 
** [http://www.comp.nus.edu.sg/~bioinfo/phylogenetic%20tree%20reconstruction_2_8.pdf part2 - distance based]
 
** All lecture notes: [http://www.comp.nus.edu.sg/~bioinfo/lecture%20notes.htm all notes]
 
** All lecture notes: [http://www.comp.nus.edu.sg/~bioinfo/lecture%20notes.htm all notes]
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* Turnpike problem (no known solution for general case): There are n points on a line.  If we are given a multiset of all distances between all pairs of point, find the location of these points.  (We can assume that the point with minimum x-co-ordinate is at the origin.)
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** [http://theory.stanford.edu/~tomas/turn.ps Graph turnpike problem] (some solvable cases)
  
 
== Tasks ==
 
== Tasks ==

รุ่นแก้ไขปัจจุบันเมื่อ 14:14, 21 มีนาคม 2559

Materials

  • Turnpike problem (no known solution for general case): There are n points on a line. If we are given a multiset of all distances between all pairs of point, find the location of these points. (We can assume that the point with minimum x-co-ordinate is at the origin.)

Tasks

  • IOI'14 Rail
  • IOI'15 Towns (get partial scores)