Journal of Zhejiang Agricultural Sciences ›› 2026, Vol. 67 ›› Issue (3): 608-616.DOI: 10.16178/j.issn.0528-9017.20250019

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The classification method of physical characteristics of tobacco leaves based on K-means clustering

XU Qiang1(), SU Xuemiao2, MIAO Chenlin1, ZHANG Yifan1, YANG Yue1, CHEN Chao3, HUANG Enhua4, WU Hao5, ZHANG Yuhai6(), HU Zongyu1()   

  1. 1.Jiangsu Tobacco Industry Co. ,Ltd. ,Nanjing 210004,Jiangsu
    2.Chuxiong Redrying Factory of Yunnan Tobacco Redrying Co. ,Ltd. ,Chuxiong 675299,Yunnan
    3.Guoyang Redrying Factory of Huahuan International Tobacco Co. ,Ltd. ,Bozhou 233606,Anhui
    4.Fujian Sanming Jinye Redrying Co. ,Ltd. ,Sanming 365001,Fujian
    5.Zunyi Redrying Factory of Guizhou Tobacco Redrying Co. ,Ltd. ,Zunyi 563099,Guizhou
    6.Tobacco Technology Research Laboratory,Zhengzhou Tobacco Research Institute,Zhengzhou 450000,Henan
  • Received:2025-01-09 Online:2026-03-11 Published:2026-03-30
  • Contact: ZHANG Yuhai,HU Zongyu

Abstract:

To clarify the typical production areas,physical characteristic indicators and data distribution intervals of tobacco leaves with different processing attribute types,and to explore the physical characteristics of tobacco leaves with different processing attribute types,this study selected 31 varieties of tobacco leaves from 72 prefecture-level cities in 18 provinces including Yunnan Province and Henan Province. The physical characteristic indicators such as adhesion force,shear strength,penetration strength,leaf stem binding force,branch binding force,tensile force and elongation were analyzed. The K-means clustering and Gaussian mixture model algorithms were adopted for analysis,and the classification method of processing attributes was established. The results showed that using the normal coefficient evaluation index can improve the clustering effect of the model. The clustering effect of the physical characteristics of tobacco leaves using the K-means model was superior to that of the Gaussian mixture model. When 0.35 was taken as the threshold of the normal coefficient,the physical indicators of tobacco leaf samples can be classified into three categories according to typical production areas. This study provides a certain reference basis for determining the physical properties of tobacco leaves with different processing attribute types.

Key words: tobacco leaf, physical characteristic, clustering model, K-means clustering model, Gaussian mixture model

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