Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (07): 147-153.doi: 10.13475/j.fzxb.20191002107

• Apparel Engineering • Previous Articles     Next Articles

Young Xinjiang female hip shape characterization and prototype correction using XGBoost algorithm

LIU Tingting, XU Hong, MEI Xinyuan, LIU Yixin, XIAO Aimin()   

  1. College of Textiles and Clothing, Xinjiang University, Urumqi, Xinjiang 830046, China
  • Received:2019-10-10 Revised:2020-03-05 Online:2020-07-15 Published:2020-07-23
  • Contact: XIAO Aimin E-mail:495178065@qq.com

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Abstract:

This paper addresses the fitting issues for Xinjiang skirts through a study on the size of lower body shape. In order to determine the true shape of hip body accurately, hip data of 220 young Xinjiang females aged 18 to 25 were analyzed. Using the factor analysis and correlation coefficients mergods, 2 factor for clustering were obtained, i.e. back hip length to waist girth ratio, back hip length to hip girth ratio, and 3 hip body types were defined based on the K-means clustering method. On this basis, Python software was used to establish an XGBoost buttock discriminant model. The work involved three parts. The first thing was to compare and analyze different algorithm models and XGBoost was used to evaluate the accuracy, and the highest accuracy reached 98.4%. The second part was to,modify the intermediate skirt prototype for young Xinjiang females, where it was found that the rear hip length was 2.4 cm different from the rear hip length of the standard dress prototype, indicating that the young Xingjiang female hips is larger than that in other regions. Finally, the discriminating algorithm was applied to the data system. The outcome of the research is shown to have improved discrimination efficiency for body size, and the method provides data support for other human related fields.

Key words: young Xinjiang female, hip shape classification, body shape, XGBoost algorithm, skirt prototype correction

CLC Number: 

  • TS941.17

Fig.1

Hip length and angle measurement schematic. (a) Face of hip body;(b) Side of hip body"

Tab.1

Analysis of contribution rate of main component"

成分 旋转载荷平方和
特征根 贡献率/% 累积贡献率/%
1 5.616 33.035 33.035
2 3.195 18.797 51.832
3 2.972 17.480 69.311
4 1.326 7.798 77.110

Tab.2

Rotating composition matrix"

直接变量 成分
1 2 3 4
臀围 0.888 0.125 0.173 0.027
体重 0.880 0.244 0.128 0.055
大腿根围 0.861 -0.036 0.054 0.069
腰围 0.834 0.041 0.001 -0.056
腰厚 0.803 0.027 0.015 -0.219
臀厚 0.800 0.045 -0.042 -0.022
中腰围 0.794 0.217 0.103 0.087
腹厚 0.772 0.128 0.006 -0.135
身高 0.201 0.892 0.218 0.055
臀高 0.124 0.884 0.037 0.032
腰高 0.169 0.877 0.305 0.036
膝盖中点高 0.016 0.782 0.042 0.022
后臀长 0.059 0.123 0.964 0.104
前臀长 0.081 0.167 0.962 -0.071
侧臀长 0.077 0.192 0.936 0.061
臀突上角 -0.017 0.120 -0.093 0.796
腰侧角 -0.074 -0.021 0.165 0.762

Tab.3

Correlation coefficients and coefficients of variation"

主要因子 指标 相关指数 变异系数
围度因子 体重 0.525 0.115 5
臀围 0.523 0.054 0
大腿根围 0.451 0.073 2
腰围 0.452 0.080 5
腰厚 0.401 0.110 6
中腰围 0.416 0.074 5
臀厚 0.384 0.085 0
腹厚 0.380 0.092 3
高度因子 身高 0.598 0.033 8
臀高 0.513 0.050 5
腰高 0.594 0.046 1
膝盖中点高 0.351 0.049 4
臀长因子 后臀长 0.872 0.104 9
前臀长 0.843 0.098 6
侧臀长 0.841 0.102 7
角度因子 臀突上角 0.256 0.289 5
腰侧角 0.256 0.237 4

Tab.4

One-way ANOVA between each derived variable and key part of hip body"

项目 指标 BMI值 臀腰差/cm 臀腰比 腰围身高比 臀围身高比 后臀长腰围比 后臀长臀围比 后臀长身高比
F值 体重 2.335 2.311 3.262 5.683 2.907 2.393 3.664 1.752
腰围 2.847 4.336 18.120 6.558 11.736 5.375 2.328 1.339
臀围 1.997 2.381 7.826 21.714 1.052 1.689 19.136 1.341
身高 7.826 1.395 1.656 1.474 1.964 1.766 1.947 10.728
后臀长 0.950 0.959 0.803 0.634 0.612 12.716 95.599 139.101
P值 体重 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.034
腰围 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.170
臀围 0.001 0.000 0.000 0.000 0.404 0.009 0.000 0.169
身高 0.000 0.078 0.018 0.113 0.008 0.005 0.002 0.000
后臀长 0.589 0.546 0.847 0.853 0.917 0.000 0.000 0.000

Fig.2

Scatter plot of clustering indicators and major variables. (a) A scatterplot of clustering indicators and W;(b) A scatterplot of clustering indicators and H;(c) A scatterplot of clustering indicators and Z;(d) A scatterplot of clustering indicators and BHL"

Tab.5

Average and proportion of main indicators of three body types"

体型类别 后臀长腰围比 后臀长臀围比 占比/%
1 0.33 0.25 21
2 0.28 0.22 42
3 0.24 0.19 37

Fig.3

Three hip body shape diagram. (a)Face of hip body;(b)Side of hip body"

Tab.6

Comparison of waist and hip data mean in different regionscm"

指标 新疆地区 上海地区 东北地区
2015 2019 2014 2017 2013 2017
腰围 70.4 71.83 67.7 69.4 68.5 69.5
臀围 93.7 94.03 89.1 92.8 92.5 92.0
腰高 100.0 103.00 97.8 100.5 100.6 103.3

Fig.4

XGBoost model body size difference flow chart"

Fig.5

Comparison of revised skirt prototype and standard skirt prototype"

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