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diff --git a/ml/dlib/dlib/clustering/spectral_cluster_abstract.h b/ml/dlib/dlib/clustering/spectral_cluster_abstract.h
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-// Copyright (C) 2015 Davis E. King (davis@dlib.net)
-// License: Boost Software License See LICENSE.txt for the full license.
-#undef DLIB_SPECTRAL_CLUSTEr_ABSTRACT_H_
-#ifdef DLIB_SPECTRAL_CLUSTEr_ABSTRACT_H_
-
-#include <vector>
-
-namespace dlib
-{
- template <
- typename kernel_type,
- typename vector_type
- >
- std::vector<unsigned long> spectral_cluster (
- const kernel_type& k,
- const vector_type& samples,
- const unsigned long num_clusters
- );
- /*!
- requires
- - samples must be something with an interface compatible with std::vector.
- - The following expression must evaluate to a double or float:
- k(samples[i], samples[j])
- - num_clusters > 0
- ensures
- - Performs the spectral clustering algorithm described in the paper:
- On spectral clustering: Analysis and an algorithm by Ng, Jordan, and Weiss.
- and returns the results.
- - This function clusters the input data samples into num_clusters clusters and
- returns a vector that indicates which cluster each sample falls into. In
- particular, we return an array A such that:
- - A.size() == samples.size()
- - A[i] == the cluster assignment of samples[i].
- - for all valid i: 0 <= A[i] < num_clusters
- - The "similarity" of samples[i] with samples[j] is given by
- k(samples[i],samples[j]). This means that k() should output a number >= 0
- and the number should be larger for samples that are more similar.
- !*/
-}
-
-#endif // DLIB_SPECTRAL_CLUSTEr_ABSTRACT_H_
-
-