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GIS在开采沉陷领域应用及与专业模型的结合 被引量:24
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作者 杜培军 郭达志 +1 位作者 方涛 施鹏飞 《武汉大学学报(信息科学版)》 EI CSCD 北大核心 2003年第4期463-467,共5页
GIS在开采沉陷领域的应用可从数据与信息管理、基本空间分析、GIS与专业模型结合、空间决策支持系统建立四个层次进行。GIS与专业模型结合是目前最主要的应用方式 ,其实现方法包括基于数据传输的松散式结合、基于共同用户界面的表面无... GIS在开采沉陷领域的应用可从数据与信息管理、基本空间分析、GIS与专业模型结合、空间决策支持系统建立四个层次进行。GIS与专业模型结合是目前最主要的应用方式 ,其实现方法包括基于数据传输的松散式结合、基于共同用户界面的表面无缝结合、内嵌式结合等 ,基于组件开发技术实现二者结合的方法最具前景 ,符合当前GIS发展的趋势。实践证明 。 展开更多
关键词 GIS 开采 沉陷 专业模型 数据信息管理 基本空间分析 空间决策支持系统 表面无缝结合 内嵌式结合 松散式结合
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Dynamic batch selective sampling based on version space analysis 被引量:4
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作者 张晓宇 《High Technology Letters》 EI CAS 2012年第2期208-213,共6页
A novel dynamic batch selective sampling algorithm based on version space analysis is presented. In the traditional batch selective sampling, example selection is entirely determined by the existing unreliable classif... A novel dynamic batch selective sampling algorithm based on version space analysis is presented. In the traditional batch selective sampling, example selection is entirely determined by the existing unreliable classification boundary; meanwhile, within a batch, examples labeled previously fail to provide instructive information for the selection of the rest. As a result, using the examples selected in batch mode for model refinement will jeopardize the classification performance. Based on the duality between feature space and parameter space under the SVM active learning fi:amework, dynamic batch selective sampling is proposed to address the problem. We select a batch of examples dynamically, using the examples labeled previously as guidance for further selection. In this way, the selection of feedback examples is determined by both the existing classification model and the examples labeled previously. Encouraging experimental results demonstrate the effectiveness of the proposed algorithm. 展开更多
关键词 relevance feedback active learning selective sampling support vector machine(SVM) version space
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