nearest-neighbor

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How to calculate distance when we have sparse dataset in K nearest neighbour

I am implementing K nearest neighbour algorithm for a very sparse data. I want to calculate the distance between a test instance and each sample in the training set, but I am confused.[详细]

2023-04-05 13:45 分类：问答
Approximate for average distance to nearest neighbour?

And another algorithm I\'m looking for: A free C/C++ implementation of the average distance to nearest neighbour problem.[详细]

2023-04-03 19:25 分类：问答
How to perform a multidimensional search for "N-nearest neighbors?"

I am designing an automated trading software for the foreign exchange market. In a MYSQL database I have years of market data at five-minute intervals. I have 5 different metrics for this data alongs[详细]

2023-03-27 05:55 分类：问答
Implementing a k-d tree for 'nearest neighbor' search in MYSQL?

I am designing an automated trading software for the foreign exchange market. In a MYSQL database I have years of market data at five-minute intervals. I have 4 different metrics for this data alongs[详细]

2023-03-27 02:56 分类：问答
2D nearest neighbour search for moving points

I want do do some flocking simulation, as described here. For this I need to search for the nearest neighbours of each of my 2D points. However, I cannot use a static data structure like a k-d tree 开[详细]

2023-03-26 16:06 分类：问答
Nearest neighbor search with periodic boundary conditions

In a cubic box I have a large collection points in R^3. I\'d like to find the k nearest neighbors for eac开发者_如何学Pythonh point. Normally I\'d think to use something like a k-d tree, but in this c[详细]

2023-03-25 07:36 分类：问答
Asymmetric nearest-neighbour in Java

From a sorted map, I want to retrieve a subset of n entries, starting m entries before a specified value v. For example, for the key set k = {0.2, 0.3, 0.4, 0.6, 0.8, 0.9, 1.0}, a query with n=5, m=2[详细]

2023-03-22 12:13 分类：问答
Neighbor discovery C

I need开发者_Python百科 to discover all network neighbors in Linux(they are running Linux too) and I need to get theirs IP addresses(3rd layer). Any ideas how to do that?[详细]

2023-03-21 12:28 分类：问答
Best GPU algorithm for calculating lists of neighbours

Given a collection of thousands of points in 3D, I need to get the list of neighbours for each particl开发者_StackOverflowe that fall inside some cutoff value (in terms of euclidean distance), and if[详细]

2023-03-20 22:09 分类：问答
How to get the nearest neighbor in weka using java

I\'ve been trying to use开发者_运维知识库 the Ibk nearest neighbor algorithm that goes together with the weka machine learning library.[详细]

2023-03-17 00:44 分类：问答