项目名称： 多源异构盐城滨海湿地生态系统生境信息交互感知机理研究

项目编号： No.31501221

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 农业科学

项目作者： 陈永明

作者单位： 盐城工学院

项目金额： 20万元

中文摘要： 多源异构盐城滨海湿地生态系统生境信息交互感知机理研究，对于分析湿地环境中生物生存环境和预测其生境变化都具有重要意义。本项目以盐城滨海湿地生态系统生境的外貌影像和离散语料信息为研究对象，使用核主成分分析法对多模态生态生境影像空域和色域信息进行融合，提出偏抽象标签狄利克雷分布主题模型提取生态生境语料指纹信息，使用核偏最小二乘法构建异构信息在语义层面上的映射模型，利用多分类Logistic回归法获得底层异构特征信息的在高层抽象语义空间中的后验概率分布，使用Kullback-Leibler散度来估计高层语义空间中抽象信息的相似度，根据语义信息相似度来构建原始外貌影像和离散语料之间的耦合关系。同时通过该项目的实施，研制出交互感知软件，实现从获得的湿地生态语料表述中近似重构出湿地生态生境影像，又可以由生态生境场景溯源到相应的诠释语料，因此研究对于生态生境理解和保护具有重要的学术理论意义和实际应用。

中文关键词： 滨海湿地；生态系统生境；交互感知；多源异构信息；语义空间

英文摘要： Investigation of the Yancheng coastal wetland ecosystem habitat (YCWEH) interactive perceptive mechanism is of great significances to studying the living environment of wetland organisms and to predicting its changes. The appearance scene imagery and discrete corpus characterizing YCWEH are used for investigation. Kernel principal component analysis is used to merge the multi-modal spatial and color information of YCWEH appearance scene imagery. A novel half supervised topic model of partially abstract labeled Dirichlet allocation is proposed to extract the fingerprint of YCWEH discrete corpus. Kernel partial least square regression is used to construct the mapping model of the isomerous information on the semantic level. Multinomial Logistic regression is used to estimate the posterior probability distribution of the isomerous information on the high-level abstract semantic space (HABSS). Kullback-Leibler divergence is used to measure the similarity of abstract information on the HABSS. The similarity is used to construct the coupling relationship between the original appearance scene imagery and discrete corpus. Through the project implementation, the corresponding interactive perceptive software will be developed. Thus, YCWEH scene imagery can be approximately reconstructed from the ecological corpus statements, conversely the biophysical scene can derive the corresponding interpretation corpus. Thereby, the investigation has important academic theoretical siginficance and actual application value for understanding and protecting the YCWEH.

英文关键词： Coastal wetland;Ecosystem habitat;Interactive perceptive;Multi-source isomerous information;Semantic space