Table 3 ROC-AUC scores comparison for ti\(k\)-NN. ROC-AUC scores of ti\(k\)-NN index very closely matches the scores of corresponding stand-alone implementation of its telescope-index.

From: Telescope indexing for k-nearest neighbor search algorithms over high dimensional data & large data sets

ROC-AUC scores comparison for ti\(k\)-NN

index/telescope index

census

covtype

poker

MNIST

swarm

gisette

\(ball\)-tree

0.89

0.99

0.82

0.99

0.95

0.99

(B+ + \(ball\)-tree)

0.87

0.90

0.79

0.97

0.94

0.98

MRPT

0.91

0.99

0.83

0.98

0.87

0.99

(B+ + MRPT)

0.87

0.90

0.80

0.97

0.86

0.97

flann-kdtree

0.87

0.97

0.71

0.91

0.77

0.64

(B+ + flann-kdtree)

0.85

0.89

0.77

0.93

0.81

0.66

flann-kmeans

0.87

0.97

0.75

0.90

0.77

0.72

(B++ flann-kmeans)

0.86

0.86

0.71

0.96

0.95

0.89

nndescent

0.84

0.97

0.83

0.98

0.94

0.99

(B+ + nndescent)

0.86

0.87

0.78

0.97

0.92

0.98

ngt

0.89

0.99

0.82

0.98

0.94

0.99

(B+ + ngt)

0.87

0.90

0.79

0.97

0.94

0.98

faiss

0.84

0.98

0.68

0.98

0.95

0.99

(B+ + faiss)

0.84

0.90

0.70

0.98

0.92

0.98

qalsh

0.85

0.99

0.71

0.98

0.95

0.99

(B+ + qalsh)

0.85

0.91

0.65

0.97

0.91

0.98

hnsw

0.84

0.98

0.68

0.98

0.95

0.99

(B+ + hnsw)

0.85

0.96

0.60

0.97

0.93

0.98