TY - EJOU
AU - Guo, Gongde
AU - Yu, Kai
AU - Wang, Hui
AU - Lin, Song
AU - Xu, Yongzhen
AU - Chen, Xiaofeng
TI - Quantum Hierarchical Agglomerative Clustering Based on One Dimension Discrete Quantum Walk with Single-Point Phase Defects
T2 - Computers, Materials \& Continua
PY - 2020
VL - 65
IS - 2
SN - 1546-2226
AB - As an important branch of machine learning, clustering analysis is widely used
in some fields, e.g., image pattern recognition, social network analysis, information
security, and so on. In this paper, we consider the designing of clustering algorithm in
quantum scenario, and propose a quantum hierarchical agglomerative clustering
algorithm, which is based on one dimension discrete quantum walk with single-point
phase defects. In the proposed algorithm, two nonclassical characters of this kind of
quantum walk, localization and ballistic effects, are exploited. At first, each data point is
viewed as a particle and performed this kind of quantum walk with a parameter, which is
determined by its neighbors. After that, the particles are measured in a calculation basis.
In terms of the measurement result, every attribute value of the corresponding data point
is modified appropriately. In this way, each data point interacts with its neighbors and
moves toward a certain center point. At last, this process is repeated several times until
similar data points cluster together and form distinct classes. Simulation experiments on
the synthetic and real world data demonstrate the effectiveness of the presented algorithm.
Compared with some classical algorithms, the proposed algorithm achieves better
clustering results. Moreover, combining quantum cluster assignment method, the
presented algorithm can speed up the calculating velocity.
KW - Quantum machine learning
KW - discrete quantum walk
KW - hierarchical agglomerative clustering
DO - 10.32604/cmc.2020.011399