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Short routes between close start and target locations may not require any transit nodes. In this case, the above framework leads to incorrect distances because it forces routes to visit at least one transit node. To prevent this kind of problem, a locality filter can be used. For given start and target locations, the locality filter decides, if ...
In 2008, Philippe Hanrigou (then at ThoughtWorks) made "Selenium Grid", which provides a hub allowing the running of multiple Selenium tests concurrently on any number of local or remote systems, thus minimizing test execution time. Grid offered, as open source, a similar capability to the internal/private Google cloud for Selenium RC.
Route assignment, route choice, or traffic assignment concerns the selection of routes (alternatively called paths) between origins and destinations in transportation networks. It is the fourth step in the conventional transportation forecasting model, following trip generation , trip distribution , and mode choice .
The excess function x f : V → ℝ represents the net flow entering a given node u (i.e. the sum of the flows entering u) and is defined by = (,) (,). A node u is said to be active if x f ( u ) > 0 (i.e. the node u consumes flow), deficient if x f ( u ) < 0 (i.e. the node u produces flow), or conserving if x f ( u ) = 0 .
Numbers are not unique, but nodes with the same number are placed far apart, so that they can't be confused. To find a route, the cyclist uses a list of node numbers (the sequence of intersections they will pass through). The list is generated with a website, or a downloaded, roadside or paper map. Intersection numbers need little translation.
Pathfinding or pathing is the search, by a computer application, for the shortest route between two points. It is a more practical variant on solving mazes . This field of research is based heavily on Dijkstra's algorithm for finding the shortest path on a weighted graph .
In mathematics, the n th Motzkin number is the number of different ways of drawing non-intersecting chords between n points on a circle (not necessarily touching every point by a chord). The Motzkin numbers are named after Theodore Motzkin and have diverse applications in geometry , combinatorics and number theory .
The addition of a hold time (refusing route updates for a few minutes after a route retraction) avoids loop formation in virtually all cases, but causes a significant increase in convergence times. More recently, a number of loop-free distance vector protocols have been developed — notable examples are EIGRP , DSDV and Babel .