Storing nearest neighbor

Question

There are algorithms out there to find k nearest neighbors in many ways. I am eventually will have to apply these, however in my case, I can code my program to add points one-by-one rather than add all the points altogether, then run a algorithm. Is this make the problem easier, so that maybe I could use a tree, and add each node to a neighborhood tree or something. This seems like it would be faster than searching all the points linearly.

And in my program points will be moving constantly, so I will be required to update neighbors, that's why I thought it is better to use a tree or another construct to update records, rather than calculate nearest neighbors in every movement of these points. Do you know of such data structure ?

Answer 1

Maybe a graph datastructure/database is most appropriate due to the structural similarity. Example: https://neo4j.com/graphgist/a7c915c8-a3d6-43b9-8127-1836fecc6e2f (I do not work for neo4j)