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含Allee效应的广义Logistic模型之定量开发 被引量:2
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作者 夏锋 《中山大学研究生学刊(自然科学与医学版)》 1995年第2期33-42,共10页
本文详细讨论了广义Logistic模型在含Allee效应的情况下的定量开发,得到其解在各种参数条件下的完整图貌和一些有生态意义的结果。
关键词 ALLEE效应 广义Logistic模型 定量开发
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Developing a geographic Case-Based Reasoning approach
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作者 DU Yun-yan ZHOU Cheng-hu +1 位作者 SU Fen-zhen SHI Wen-zhong 《Journal of Environmental Science and Engineering》 2007年第1期1-7,18,共8页
Case-Based Reasoning (CBR) is an AI approach and been applied to many areas. However, one area - geography - has not been investigated systematically and thus has been identified as the focus for this study. This pa... Case-Based Reasoning (CBR) is an AI approach and been applied to many areas. However, one area - geography - has not been investigated systematically and thus has been identified as the focus for this study. This paper intends to further extend current CBR to a geographic CBR (Geo-CBR). First, the concept of Geo-CBR is proposed. Second, a representation model for geographic cases has been established based on the Tesseral model and on a further extension in spatio-temporal dimensions for geographic cases. Third, a reasoning model for Geo-CBR is developed by considering the spatio-temporat characteristics and the uncertain and limited information of geographic cases. Finally, the Geo-CBR model is applied to forecasting the production of ocean fisheries to demonstrate the applicability of the developed Geo-CBR in solving problems in the real world. According to the experimental results, Geo-CBR is an effective and easy-to-implement approach for predicting geographic cases quantitatively. 展开更多
关键词 Case-Based Reasoning (CBR) geographic CBR (Geo-CBR) representation model reasoning model Tesseral model
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