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arXiv 0810.5484cs.LGcs.AIcs.MA
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一种基于改进的随机游走模型的聚类算法

A Novel Clustering Algorithm Based on a Modified Model of Random Walk

College of Electrical Engineering, Zhejiang University(浙江大学电气工程学院)

Qiang Li, Yan He, Jing-ping Jiang

摘要:

本文提出了一种改进的随机游走模型,并在此基础上提出了两种新的聚类算法,该算法将数据集中的每个数据点看作一个粒子,按照改进模型中预先设定的规则在空间中随机移动。此外,该数据点也可以被视为一个局部控制子系统,其中控制器根据所有数据点的反馈来调整其转移概率向量,然后通过事件生成函数来识别其转移方向。最后,更新所有数据点的位置。当它们在空间中移动时,数据点逐渐聚集,并且一些分离的部分自动出现在它们之间。因此,属于同一类的数据点位于同一位置,而属于不同类的数据点彼此远离。实验结果表明,该算法能够合理有效地对测试数据集上的数据点进行聚类,并与其他算法进行了比较,验证了该算法的有效性。

英文摘要:

We introduce a modified model of random walk, and then develop two novel clustering algorithms based on it. In the algorithms, each data point in a dataset is considered as a particle which can move at random in space according to the preset rules in the modified model. Further, this data point may be also viewed as a local control subsystem, in which the controller adjusts its transition probability vector in terms of the feedbacks of all data points, and then its transition direction is identified by an event-generating function. Finally, the positions of all data points are updated. As they move in space, data points collect gradually and some separating parts emerge among them automatically. As a consequence, data points that belong to the same class are located at a same position, whereas those that belong to different classes are away from one another. Moreover, the experimental results have demonstrated that data points in the test datasets are clustered reasonably and efficiently, and the comparison with other algorithms also provides an indication of the effectiveness of the proposed algorithms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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