Editing Heuristic routing (section)

'''Heuristic routing''' is a system used to describe how deliveries are made when problems in a [[network topology]] arise. [[Heuristic]] is an adjective used in relation to methods of learning, discovery, or problem solving. [[Routing]] is the process of selecting paths to specific destinations. Heuristic routing is  used for traffic in the [[telecommunications network]]s and [[transport network]]s of the world.

Heuristic routing is achieved using specific [[algorithm]]s to determine a better, although not always optimal, path to a destination. When an interruption in a network topology occurs, the software running on the networking electronics can calculate another route to the desired destination via an alternate available path.

According to {{harvtxt|Shuster|Schur|1974|p=1}}:
<blockquote>The heuristic approach to problem solving consists of applying human intelligence, experience, common sense and certain rules of thumb (or heuristics) to develop an acceptable, but not necessarily an optimum, solution to a problem. Of course, determining what constitutes an acceptable solution is part of the task of deciding which approach to use; but broadly defined, an acceptable solution is one that is both reasonably good (close to optimum) and derived within reasonable effort, time, and cost constraints. Often the effort (manpower, computer, and other resources) required, the time limits on when the solution is needed, and the cost to compile, process, and analyze all the data required for deterministic or other complicated procedures preclude their usefulness or favor the faster, simpler heuristic approach. Thus, the heuristic approach is generally used when deterministic techniques or are not available, economical, or practical.</blockquote>

Heuristic routing allows a measure of route optimization in telecommunications networks based on recent empirical knowledge of the state of the network. Data, such as [[time]] [[Network delay|delay]], may be extracted from incoming messages, during specified periods and over different routes, and used to determine the optimum routing for transmitting data back to the sources.