- class sklearn.cluster.MeanShift(bandwidth=None, seeds=None, bin_seeding=False, min_bin_freq=1, cluster_all=True)¶
bandwidth : float, optional
Bandwidth used in the RBF kernel If not set, the bandwidth is estimated. See clustering.estimate_bandwidth.
seeds : array [n_samples, n_features], optional
Seeds used to initialize kernels. If not set, the seeds are calculated by clustering.get_bin_seeds with bandwidth as the grid size and default values for other parameters.
min_bin_freq : int, optional
To speed up the algorithm, accept only those bins with at least min_bin_freq points as seeds. If not defined, set to 1.
cluster_all : boolean, default True
If true, then all points are clustered, even those orphans that are not within any kernel. Orphans are assigned to the nearest kernel. If false, then orphans are given cluster label -1.
Because this implementation uses a flat kernel and a Ball Tree to look up members of each kernel, the complexity will is to O(T*n*log(n)) in lower dimensions, with n the number of samples and T the number of points. In higher dimensions the complexity will tend towards O(T*n^2).
Scalability can be boosted by using fewer seeds, for example by using a higher value of min_bin_freq in the get_bin_seeds function.
Note that the estimate_bandwidth function is much less scalable than the mean shift algorithm and will be the bottleneck if it is used.
Dorin Comaniciu and Peter Meer, “Mean Shift: A robust approach toward feature space analysis”. IEEE Transactions on Pattern Analysis and Machine Intelligence. 2002. pp. 603-619.
cluster_centers_ array, [n_clusters, n_features] Coordinates of cluster centers. labels_ : Labels of each point.
fit(X) Perform clustering. fit_predict(X[, y]) Performs clustering on X and returns cluster labels. get_params([deep]) Get parameters for this estimator. set_params(**params) Set the parameters of this estimator.
- __init__(bandwidth=None, seeds=None, bin_seeding=False, min_bin_freq=1, cluster_all=True)¶
X : array-like, shape=[n_samples, n_features]
Samples to cluster.
- fit_predict(X, y=None)¶
Performs clustering on X and returns cluster labels.
X : ndarray, shape (n_samples, n_features)
y : ndarray, shape (n_samples,)
Get parameters for this estimator.
deep: boolean, optional :
If True, will return the parameters for this estimator and contained subobjects that are estimators.
params : mapping of string to any
Parameter names mapped to their values.
Set the parameters of this estimator.
The method works on simple estimators as well as on nested objects (such as pipelines). The former have parameters of the form <component>__<parameter> so that it’s possible to update each component of a nested object.
Returns : self :