The enormous successes have been made by quantum algorithms during the last decade. In this paper, we combine the quantum random walk (QRW) with the problem of data clustering, and develop two clustering algorithms based on the one dimensional QRW. Then, the probability distributions on the positions induced by QRW in these algorithms are investigated, which also indicates the possibility of obtaining better results. Consequently, the experimental results have demonstrated that data points in datasets are clustered reasonably and efficiently, and the clustering algorithms are of fast rates of convergence. Moreover, the comparison with other algorithms also provides an indication of the effectiveness of the proposed approach.
The enormous successes have been made by quantum algorithms during the last decade. In this paper, we combine the quantum random walk (QRW) with the problem of data clustering, and develop two clustering algorithms based on the one dimensional QRW. Then, the probability distributions on the positions induced by QRW in these algorithms are investigated, which also indicates the possibility of obtaining better results. Consequently, the experimental results have demonstrated that data points in datasets are clustered reasonably and efficiently, and the clustering algorithms are of fast rates of convergence. Moreover, the comparison with other algorithms also provides an indication of the effectiveness of the proposed approach.
The enormous successes have been made by quantum algorithms during the last decade. In this paper, we combine the quantum game with the problem of data clustering, and develop clustering algorithms based on it, in which data points in a dataset are considered as players who can make decisions and play quantum strategies in quantum games. After playing quantum games, each player’s expected payoff is calculated and then he uses an link-removing-and-rewiring (LRR) function to change his neighbors and adjust the strength of links connecting to them for maximizing his payoff. Further, algorithms are discussed and analyzed in two cases of strategies, two payoff matrixes and two LRR functions. Consequently, the experimental results have demonstrated that data points in datasets are clustered reasonably and efficiently, and the clustering algorithms have fast rates of convergence. Moreover, the comparison with other algorithms also provides an indication of the effectiveness of the proposed approach.
Enormous successes have been made by quantum algorithms during the last decade. In this paper, we combine the quantum game with the problem of data clustering, and then develop a quantum-game-based clustering algorithm, in which data points in a dataset are considered as players who can make decisions and implement quantum strategies in quantum games. After each round of a quantum game, each player's expected payoff is calculated. Later, he uses a link-removing-and-rewiring (LRR) function to change his neighbors and adjust the strength of links connecting to them in order to maximize his payoff. Further, algorithms are discussed and analyzed in two cases of strategies, two payoff matrixes and two LRR functions. Consequently, the simulation results have demonstrated that data points in datasets are clustered reasonably and efficiently, and the clustering algorithms have fast rates of convergence. Moreover, the comparison with other algorithms also provides an indication of the effectiveness of the proposed approach.
Traditional machine learning shares several benefits with quantum information processing field. The study of machine learning with quantum mechanics is called quantum machine learning. Data clustering is an important tool for machine learning where quantum computing plays a vital role in its inherent speed up capability. In this paper, a hybrid quantum algorithm for data clustering (quantum walk-based hybrid clustering (QWBHC)) is introduced where one-dimensional discrete time quantum walks (DTQW) play the central role to update the positions of data points according to their probability distributions. A quantum oracle is also designed and it is mainly implemented on a finite [Formula: see text]-regular bipartite graph where data points are initially distributed as a predefined set of clusters. An overview of a quantum walk (QW) based clustering algorithm on 1D lattice structure is also introduced and described in this paper. In order to search the nearest neighbors, a unitary and reversible DTQW gives a quadratic speed up over the traditional classical random walk. This paper also demonstrates the comparisons of our proposed hybrid quantum clustering algorithm with some state-of-the-art clustering algorithms in terms of clustering accuracy and time complexity analysis. The proposed quantum oracle needs [Formula: see text] queries to mark the nearest data points among clusters and modify the existing clusters. Finally, the proposed QWBHC algorithm achieves [Formula: see text] performance.
This paper explores the application of quantum random walks (QRWs) to feature extraction from high-dimensional data. Classical random walks often struggle with the curse of dimensionality, leading to inefficient exploration of the data space. QRWs, leveraging the inherent randomness of quantum mechanics, offer a potential solution by enabling more efficient exploration and potentially uncovering hidden correlations. This work details the theoretical framework for implementing QRWs on graph-based representations of data, presenting algorithms for both discrete and continuous graphs. We investigate the key differences between classical and quantum random walks, focusing on the role of superposition and entanglement in expanding the search space. The core claim is that QRWs can be utilized to extract meaningful features from high-dimensional data. We provide a mathematical formulation for analyzing the convergence and efficiency of QRWs, demonstrating the potential advantages over traditional methods. The paper concludes with a discussion on the challenges and future directions for this emerging field.
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.
High-dimensional data presents significant challenges to traditional clustering algorithms due to the "curse of dimensionality," leading to sparsity issues, increased computational complexity, and reduced cluster quality. This research investigates the application of quantum-inspired algorithms to enhance clustering performance in these scenarios. We propose a novel clustering framework leveraging concepts from quantum annealing and quantum walks to efficiently explore the feature space and identify clusters. The core idea is to mimic the probabilistic and superposition properties of quantum systems within the clustering process, allowing for more nuanced exploration of potential cluster configurations. The algorithms are designed to mitigate the effects of dimensionality by introducing stochastic search strategies and exploiting correlations between features. We evaluate the effectiveness of these algorithms on benchmark datasets, demonstrating improved clustering accuracy and reduced computational cost compared to established classical methods. The research highlights the potential of quantum-inspired approaches as a viable solution for high-dimensional clustering problems.