Jingjing LIU, Yusi LIU, Disheng YI, Jing YANG, Jing ZHANG. Extracting Mixed Topic Patterns within Downtown Beijing at the Block Level [J]. Journal of Geo-information Science, 2020, 22(6): 1370
- Journal of Geo-information Science
- Vol. 22, Issue 6, 1370 (2020)
Fig. 1. Schematic diagram of block within the fourth ringroad of Beijing
Fig. 2. Schematic diagram of LDA topic model construction。。。
Fig. 3. Line graph of two methods to determine topic number in LDA model
Fig. 4. GVF in different classification numbers
Fig. 5. Block distribution within the fourth ringroad of Beijing by natural break method
Fig. 6. The proportion of three types of blocks in the structure of ring and administrative district within the fourth ringroad of Beijing
Fig. 7. The distribution of hierarchical clustering results and the histogram of mean value of various subjects in high mixed block
Fig. 8. The distribution of hierarchical clustering results and the histogram of mean value of various subjects in middle mixed block
Fig. 9. The distribution of hierarchical clustering results and the histogram of mean value of various subjects in low mixed block
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Table 1. Introduction of POI Attributes within the fourth ringroad of Beijing in 2016
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Table 2. Categories of POIs within the fourth ringroad of Beijing in 2016
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Table 3. Weight results of the first six POIs in typical blocks
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Table 4. Top 5 POIs of some topics in LDA modeling results
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Table 5. Significance of multivariate linear regression equation for three kinds of mixed block
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Table 6. Results of multiple linear regression for block mixing degree and 22 topics
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Table 7. Mixed pattern of high mixed blocks
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Table 8. Mixed pattern of medium mixed blocks
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Table 9. Mixed pattern of low mixed blocks
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