From 03bf87dcb06f7021bfb2df2fa8691593c6148aff Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 30 Nov 2022 19:47:00 +0100 Subject: Adding upstream version 1.37.0. Signed-off-by: Daniel Baumann --- ml/kmeans/KMeans.cc | 55 ----------------------------------------------------- 1 file changed, 55 deletions(-) delete mode 100644 ml/kmeans/KMeans.cc (limited to 'ml/kmeans/KMeans.cc') diff --git a/ml/kmeans/KMeans.cc b/ml/kmeans/KMeans.cc deleted file mode 100644 index e66c66c16..000000000 --- a/ml/kmeans/KMeans.cc +++ /dev/null @@ -1,55 +0,0 @@ -// SPDX-License-Identifier: GPL-3.0-or-later - -#include "KMeans.h" -#include - -void KMeans::train(SamplesBuffer &SB, size_t MaxIterations) { - std::vector Samples = SB.preprocess(); - - MinDist = std::numeric_limits::max(); - MaxDist = std::numeric_limits::min(); - - { - std::lock_guard Lock(Mutex); - - ClusterCenters.clear(); - - dlib::pick_initial_centers(NumClusters, ClusterCenters, Samples); - dlib::find_clusters_using_kmeans(Samples, ClusterCenters, MaxIterations); - - for (const auto &S : Samples) { - CalculatedNumber MeanDist = 0.0; - - for (const auto &KMCenter : ClusterCenters) - MeanDist += dlib::length(KMCenter - S); - - MeanDist /= NumClusters; - - if (MeanDist < MinDist) - MinDist = MeanDist; - - if (MeanDist > MaxDist) - MaxDist = MeanDist; - } - } -} - -CalculatedNumber KMeans::anomalyScore(SamplesBuffer &SB) { - std::vector DSamples = SB.preprocess(); - - std::unique_lock Lock(Mutex, std::defer_lock); - if (!Lock.try_lock()) - return std::numeric_limits::quiet_NaN(); - - CalculatedNumber MeanDist = 0.0; - for (const auto &CC: ClusterCenters) - MeanDist += dlib::length(CC - DSamples.back()); - - MeanDist /= NumClusters; - - if (MaxDist == MinDist) - return 0.0; - - CalculatedNumber AnomalyScore = 100.0 * std::abs((MeanDist - MinDist) / (MaxDist - MinDist)); - return (AnomalyScore > 100.0) ? 100.0 : AnomalyScore; -} -- cgit v1.2.3