《Table 5 The performance of the rule-based method in specific scenarios》
本系列图表出处文件名:随高清版一同展现
《Automatic extraction and structuration of soil–environment relationship information from soil survey reports》
To explore the impact of text types on the performance of the CRFs-based method,CRFs models of parent material were trained and validated separately by the descriptive texts of soil types and typical profiles.The validation results are shown in Tables 8 and 9.The maximum F1 value for the descriptive text of soil types was 90.7%,while the maximum F1 value for the descriptive text of soil profiles was only 75%.For the descriptive text of soil types,the optimal context window size was three and the optimal features were the combination of Wn,Pn and key value(Kn).For the descriptive text of soil profiles,the optimal context window size was two and the optimal features were the combination of Wn and Pn.These results indicated that text type had a significant impact on the performance of the CRFs model for the parent material variable.The descriptive texts of different soil types usually have similar styles and vocabularies to describe the parent material information,which are relatively easy for the CRFs to model.In contrast,the descriptive text of different soil profiles is often written using more diverse styles and vocabularies,so they are harder to be modeled.
图表编号 | XD0047431800 严禁用于非法目的 |
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绘制时间 | 2019.02.20 |
作者 | WANG De-sheng、LIU Jun-zhi、ZHU A-xing、WANG Shu、ZENG Can-ying、MA Tian-wu |
绘制单位 | Key Laboratory of Virtual Geographic Environment, Nanjing Normal University、State Key Laboratory Cultivation Base of Geographical Environment Evolution (Jiangsu Province)、Jiangsu Center for Collaborative Innovation in Geographic Information Resource Devel |
更多格式 | 高清、无水印(增值服务) |