Journal of Dali University ›› 2021, Vol. 6 ›› Issue (12): 5-11.

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High Average-Utility Co-Location Patterns Mining Algorithm with Rare Features

  

  1. College of Mathematics and Computer, Dali University, Dali, Yunnan 671003, China
  • Received:2021-04-15 Online:2021-12-15 Published:2022-01-12

Abstract:

Spatial high utility co-location patterns mining uses the sum of participating utility of all features in pattern as the measurement standard without considering the impact of pattern length and rare features. In general the longer the pattern length or the rarer the features the greater the utility of the pattern. This paper is based on spatial high-utility co-location pattern mining while considering the pattern length and possible rare features of patterns. Firstly the definitions of high average-utility co-location pattern mining with rare features is proposed then a high average-utility co-location pattern mining algorithm HAUWR with rare features is constructed and a large number of experiments on HAUWR are performed on real and synthetic data sets. The experiment result shows that algorithm HAUWR can mine the complete set of co-location patterns that meet the conditions and has good scalability. Finally regarding the impact of pattern length of high utility co-location patterns HAUWR is compared with high utility co-location patterns mining algorithm HUWR containing rare features in some aspects such as dataset size distance threshold and feature rarity.

Key words:

 , spatial data mining, high average-utility, co-location patterns, rare features, pattern length

CLC Number: