directed-graph Questions
2
I am reading Introduction to Algorithms. In 22.5 Strongly Connected Component, the algorithm STRONGLY-CONNECTED-COMPONENT(G) is defined as:
Call DFS(G) to compute finishing times u.f for each ver...
Heartbreaker asked 23/11, 2014 at 7:55
2
Solved
I've got a directed graph (N, A), where each node n[i] has a value v[i] and a threshold t[i]. For each arrow (n[i], n[j]), the invariant v[i] <= v[j] holds. I need to efficiently implement the f...
Ratha asked 10/9, 2017 at 21:15
6
Solved
I am working on an assignment where one of the problems asks to derive an algorithm to check if a directed graph G=(V,E) is singly connected (there is at most one simple path from u to v for all di...
Packhorse asked 24/3, 2010 at 20:50
7
I would like to implement a nodal-interface, basically a DAG where each node performs an operation on it's input connections, and outputs something (which you can connect to another node)
Some exa...
Theocracy asked 14/3, 2009 at 4:16
0
is it possible that the node does not overlap the edge? I use dagre d3 for the graph. For nodes i use bootstrap. When it is not automatically possible, how can i do it manually? This is an example ...
Footnote asked 6/10, 2017 at 18:16
1
Solved
So I'm trying to purpose this great example Force-Directed Graph for some very simple json: https://raw.githubusercontent.com/DealPete/forceDirected/master/countries.json
My work is here: codepen
...
Chipboard asked 3/5, 2017 at 12:37
2
Solved
So I've been building a program that uses Monte Carlo simulations to find properties of evolutionary graph theory. One of the key functions of this is to be able to generate uniformly-distributed r...
Tervalent asked 14/4, 2015 at 15:32
3
Solved
In short, I need a fast algorithm to count how many acyclic paths are there in a simple directed graph.
By simple graph I mean one without self loops or multiple edges.
A path can start from any n...
Boyfriend asked 6/4, 2011 at 15:48
1
I have a directed graph and I want to find a path that visits every node exactly one time. I want to do this with a good complexity. Is this possible? And if yes, how?
Bathulda asked 8/1, 2017 at 10:50
1
I am confused about this answer. Why can't DFS decide if there is a cycle in a directed graph while visiting each node and each edge at most once? Using the white, gray, black method, one should be...
Annabelleannabergite asked 2/6, 2016 at 4:18
3
Solved
First of all, I got a N*N distance matrix, for each point, I calculated its nearest neighbor, so we had a N*2 matrix, It seems like this:
0 -> 1
1 -> 2
2 -> 3
3 -> 2
4 -> 2
5...
Schinica asked 2/11, 2012 at 7:22
1
Solved
I have a directed weighted graph G=(V,E), which may have loops.
I am trying to determine the best time efficient algorithm to accomplish task: to find all simple path in G between source and targe...
Seyler asked 21/4, 2016 at 9:41
3
Solved
Here is a working C# implementation of tarjan's cycle detection.
The algorithm is found here:
http://en.wikipedia.org/wiki/Tarjan%27s_strongly_connected_components_algorithm
public class TarjanCy...
Misplace asked 10/7, 2011 at 18:37
1
Solved
I want to generate a directed graph that contains exactly the specified amount of cycles with their respective length. For example, the graph should contain:
2 cycles of the size 3
1 cycle of th...
Kermitkermy asked 8/2, 2016 at 17:39
2
Solved
public int bfs(int maxDepth){
int src = 2;
int dest = 2;
int i;
int depth = 0;
int countPaths = 0;
int element;
queue.add(src);
while(!queue.isEmpty() && depth <= maxDepth)
...
Liber asked 22/9, 2015 at 4:38
1
Solved
I'm studying Tarjan's algorithm for strongly-connected components and the way it works is clear to me. Anyway there's a line I don't understand:
// Consider successors of v
for each (v, w) in E do...
Hellen asked 8/8, 2015 at 17:39
1
Solved
I have a directed acyclic graph and an origin vertex v in that graph.
How can I visit all the vertices that are reachable from v, in such a way that if I visit v1 I already visited all the vertices...
Stationery asked 2/8, 2015 at 21:31
3
Solved
I need to build a family tree in php and MySQL. I'm pretty surprised at the lack of open source customizable html family tree-building software there is out there, but I digress. I have spent a lot...
Mulberry asked 24/4, 2011 at 23:30
3
Solved
I am having difficulties finding a way to properly classify the edges while a breadth-first search on a directed graph.
During a breadth-first or depth-first search, you can classify the edges me...
Ravel asked 14/4, 2015 at 15:20
2
Solved
I have created a set of classes to represent a directed cyclic graph for representing BPM processes, based on JUNG's DirectedSparseGraph class, which provides only basic graph manipulation methods ...
Abomination asked 6/3, 2015 at 15:51
1
I want to make a function which plots directed graphs with vertices aligned and adds some text below each vertex, i.e. something like the example plot below. The plotting function should be able to...
Merkley asked 16/2, 2015 at 13:51
6
Solved
The pseudocode as taken from Wikipedia:
function Dijkstra(Graph, source):
2 for each vertex v in Graph: // Initializations
3 dist[v] := infinity ; // Unknown distance function from source to v
...
Willable asked 29/5, 2012 at 13:15
6
Solved
How can we detect if a directed graph is cyclic? I thought using breadth first search, but I'm not sure. Any ideas?
Syst asked 26/3, 2010 at 17:22
1
Solved
I want to use Jackson 2.3.3 for Deserialization/Serialization of directed graphs. The structure I came up with is roughly the following:
public Class Graph {
private final Set<Node> nodes;
...
Epigraphic asked 22/7, 2014 at 14:42
1
I have a classic dependency solving problem. I thought I was headed in the right direction, but now I've hit a roadblock and I am not sure how to proceed.
Background
In the known universe (the ca...
Quiddity asked 24/3, 2014 at 16:53
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