push-relabel | A push-relabel network flow solver in JavaScript

by mikolalysenko JavaScript Version: Current License: No License

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kandi X-RAY | push-relabel Summary

push-relabel is a JavaScript library typically used in Telecommunications, Media, Advertising, Marketing applications. push-relabel has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

This library is an implementation of Goldberg and Tarjan’s [push-relabel algorithm] for solving network flow problems in JavaScript. It use relabel-to-front ordering as well as the global and gap relabelling heuristics, as described by [Cherkassy and Goldberg] giving it a run time on the order of |V|^3 in the worst case.

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Support

push-relabel has a low active ecosystem.

It has 6 star(s) with 1 fork(s). There are 1 watchers for this library.

It had no major release in the last 6 months.

There are 1 open issues and 0 have been closed. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of push-relabel is current.

Quality

push-relabel has no bugs reported.

Security

push-relabel has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

push-relabel does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

push-relabel releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

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push-relabel Key Features

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push-relabel Examples and Code Snippets

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Community Discussions

Trending Discussions on push-relabel

What's the point of the residual graph in the push-relabel algorithm?

QUESTION

What's the point of the residual graph in the push-relabel algorithm?

Asked 2021-Mar-09 at 13:08

I sort of understand how the push-relabel algorithm works. As per my understanding, it works by maintaining a preflow, however this results in there being excess flow at some nodes. Then, on a node with excess, the push operation will either push flow forward if it can, or backwards if it has reached capacity. However, if there are no adjacent nodes of a lower height, it will relabel the node to have a greater height.

I can see how this works on a normal graph. So why even introduce the residual graph? In every explanation of the algorithm I see, these operations are performed on the residual graph, which is confusing to me.

...

ANSWER

Answered 2021-Mar-09 at 13:08

The point of the residual graph is that there is no special casing for forward versus backward pushes. All there is is pushing flow on a residual arc from a higher label to a lower one. The way that push-relabel directs flow to the sink is by not allowing the sink's label to increase from zero.

Source https://stackoverflow.com/questions/66540266

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install push-relabel

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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