go-algs

Algorithms

In this repository, some algorithms are implemented in go language.

GoDoc link: ed maxflow

About Max-flow problem:

A flow network is represented in a directed acyclic graph(DAG). Each edge has a nonnegative capacity, to which the flow is limited. There are a source node s and a sink node t. s has no incoming edges, and t has no outgoing edges. All other nodes are internal nodes, in which the amount of incoming flow must equal to the amount of ougoing flow. The goal of the max-flow problem is, given a flow network, to find a flow of maximum value.

max-flow

This package implements the max-flow(min-cuts, graph-cuts) algorithm that is used to solve the labeling problem in computer vision or graphics area.

Usage:

    g := maxflow.NewGraph()
    
    nodes := make([]*maxflow.Node, 2)
    
    for i := range(nodes) {
        nodes[i] = g.AddNode()
    } // for i
    
    g.SetTweights(nodes[0], 1, 5)
    g.SetTweights(nodes[1], 2, 6)
    g.AddEdge(nodes[0], nodes[1], 3, 4)
    
    g.Run();

    flow := g.Flow()

    isSource0 := g.IsSource(nodes[0])

ed

This package implements the edit-distance algorithm that is used to compute the similarity between two strings, or more generally defined lists.

1. For computing the standard edit-distance of two strings, call ed.String or ed.StringFull function.

2. For generally defined lists, implement the ed.Interface, and use ed.EditDistance or ed.EditDistanceFull function.

LICENSE

BSD license