共查询到16条相似文献，搜索用时 421 毫秒
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针对我国葡萄酒业内缺乏利用理化指标对葡萄酒进行评级的现状,分析能否使用葡萄和葡萄酒的理化指标评价葡萄酒的质量．通过运用双因子方差分析、主成分分析、逐步回归分析等方法分析了葡萄酒的分级以及酿酒葡萄与葡萄酒的理化指标之间的联系等问题,建立了基于Matlab平台的BP神经网络模型,得到了在一定条件下,能用酿酒葡萄和葡萄酒的理化指标来评价葡萄酒的质量的结论．但仅考虑理化指标时会使结果存在一定的误差,故建议使用理化指标和简单的感官分析相结合来评价葡萄酒的质量,以提高评价葡萄酒质量的准确性． 相似文献
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酿酒葡萄的好坏与所酿葡萄酒的质量有着直接关系,葡萄酒和酿酒葡萄检测的理化指标和感官指标在一定程度上反映葡萄酒和葡萄的质量。结合主成分分析和突变级数评价建立合理的评价指标体系,将葡萄酒的质量与酿酒葡萄建立起互补的尖点突变得到酿酒葡萄的质量度,进而将酿酒葡萄分级分为五级。 相似文献
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葡萄与葡萄酒质量的综合评价 总被引：1，自引：0，他引：1
从体现酒品质量的感官评价和酿酒葡萄与葡萄酒的理化指标两方面入手,运用t检验、主成分分析法、模糊c均值聚类分析、多元线性回归分别建立显著性差异检验、主成分、聚类分析、质量影响和论证等模型,并运用SPSS、Matlab7软件,得出两组评酒员的评价结果差异性和可信度,酿酒葡萄的分级,酿酒葡萄与葡萄酒的理化指标之间的联系,最后分析并论证了葡萄、葡萄酒的理化指标与葡萄酒质量的关系. 相似文献
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针对葡萄酒评价的问题做出了合理分析,通过偏最小二乘回归方法建立起葡萄酒与葡萄理化指标之间的关系,对葡萄理化指标的数据进行相关性分析和正太检验(非参数检验),通过偏最小二乘回归方程呈现出葡萄与葡萄酒有关的因素对其质量的影响,基于此方程论证了：在实际生活中,不能简单根据酿酒葡萄与葡萄酒的理化指标评价葡萄酒的质量。并给出了其它影响葡萄酒质量的因素。 相似文献
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本文通过建立数学模型分析了酿酒葡萄与葡萄酒的理化指标之间的联系,以及它们对葡萄酒质量的影响程度,论证了能否用葡萄和葡萄酒的理化指标来评价葡萄酒的质量. 相似文献
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针对葡萄酒质量的评价问题,运用科学综合评分法和t检验分析了两组品酒员评价结果的差异,判别出品酒员评价结果的可信度;运用主成分分析法求出红、白葡萄的六个综合评价值,在此基础上,利用模糊C均值聚类方法对酿酒葡萄进行了分级;运用典型相关分析方法,分析出酿酒葡萄与葡萄酒的理化指标之间的关系;运用多元线性回归的方法,分析出酿酒葡萄和葡萄酒理化指标对葡萄酒质量的影响. 相似文献
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网络课程教学质量综合评价研究 总被引：1，自引：0，他引：1
目前,很多高等院校都开设有网络课程,对网络课程教学质量的评价较为复杂。本文构建了网络课程教学质量评价指标体系,应用模糊数学理论建立模糊综合评价模型,并通过实证分析评价模型在网络教学质量综合评价中的应用。 相似文献
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Residential environment index system and evaluation model established by subjective and objective methods 总被引：1，自引：0，他引：1
In this research, the residential environment index system and evaluation model were established by means of subjective and objective methods. The methodology for establishing the evaluation system for residential environment was first analyzed; then the subjective evaluation data-base was established by questionnaire survey; and at the same time, the objective evaluation data-base was constructed by Geographic Information System (GIS); and then the related equation system between subjective and objective system was developed by multiple regression analysis. This research could benefit evaluation of the residential environment quality for various purposes, and also provide important rudimentary data-base for the development and improvement of residential environment for officials. Furthermore, the index system and evaluation model established in this research could construct a strong relation between subjective evaluation and objective data; and thus could provide a comprehensive, efficient and effectiv 相似文献
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Residential environment index system and evaluation model established by subjective and objective methods 总被引：1，自引：0，他引：1
葛坚 《浙江大学学报(A卷英文版)》2004,5(9):1028-1034
In this research, the residential environment index system and evaluation model were established by means of subjective and objective methods. The methodology for establishing the evaluation system for residential environment was first analyzed; then the subjective evaluation data-base was established by questionnaire survey; and at the same time, the objective evaluation data-base was constructed by Geographic Information System (GIS); and then the related equation system between subjective and objective system was developed by multiple regression analysis. This research could benefit evaluation of the residential environment quality for various purposes, and also provide important rudimentary data-base for the development and improvement of residential environment for officials. Furthermore, the index system and evaluation model established in this research could construct a strong relation between subjective evaluation and objective data; and thus could provide a comprehensive, efficient and effective methodology for the evaluation of residential environment. 相似文献
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对大学生综合素质的评价是当前高校推进全面素质教育过程中所面临的十分重要的问题。本文依据科学性、全面性、层次性等原则,用基于加速遗传算法的模糊层次分析法筛选指标,构建了大学生综合素质评价指标体系,提出了信息熵赋权的客观赋权法,并用此方法对各级的指标赋权,同时还对影响大学生综合素质的各因素进行了重要性排序,然后采用模糊综合评判法构建了大学生综合素质评价模型。评价结果表明该模型具有科学、客观、合理以及方法直观简便的特点,在各类系统综合评价问题中具有一定的应用价值。 相似文献