Control tower device

This crossword clue is for the definition: Control tower device.
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Possible Answers: RADAR.

Last seen on: LA Times Crossword 19 Oct 18, Friday

Random information on the term “RADAR”:

The nearest neighbour algorithm was one of the first algorithms used to determine a solution to the travelling salesman problem. In it, the salesman starts at a random city and repeatedly visits the nearest city until all have been visited. It quickly yields a short tour, but usually not the optimal one.

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Below is the application of nearest neighbour algorithm to the travelling salesman problem .

These are the steps of the algorithm:

The sequence of the visited vertices is the output of the algorithm.

The nearest neighbour algorithm is easy to implement and executes quickly, but it can sometimes miss shorter routes which are easily noticed with human insight, due to its “greedy” nature. As a general guide, if the last few stages of the tour are comparable in length to the first stages, then the tour is reasonable; if they are much greater, then it is likely that there are much better tours. Another check is to use an algorithm such as the lower bound algorithm to estimate if this tour is good enough.

RADAR on Wikipedia