May 2017
Intermediate to advanced
310 pages
8h 5m
English
Content preview from Python Data Structures and Algorithms
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K-means algorithm
The k-means algorithm uses the mean points in a given dataset to cluster and discover groups within the dataset. K is the number of clusters that we want and are hoping to discover. After the k-means algorithm has generated the groupings, we can pass it additional but unknown data for it to predict to which group it will belong.
Note that in this kind of algorithm, only the raw uncategorized data is fed to the algorithm. It is up to the algorithm to find out if the data has inherent groups within it.
To understand how this algorithm works, we will examine 100 data points consisting of x and y values. We will feed these values to the learning algorithm and expect that the algorithm will cluster the data into two sets. We ...