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Inger Lytje 《AI & Society》1989,4(4):276-290
The article argues that cognitive linguistic theory may prove an alternative to the Montague paradigm for designing natural language understanding systems. Within this framework it describes a system which models language understanding as a dialogical process between user and computer. The system operates with natural language texts as input and represent language meaning as entity-relationship diagrams. 相似文献
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在过去的十年,通过实验手段,已积累灵长类视觉皮层的大量实验数据.许多研究者根据这些实验数据提出动物视觉系统的模型,并将它们用于计算机目标识别.文中首先总结动物视觉系统的主要实验结论,然后评述基于灵长类视觉系统工作机制的常用模型,重点讨论MIT的皮层等级模型. 相似文献
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Wine supply in the French market is structured in an intricate system of categories based on origin. There is very little knowledge about consumers understanding of this complex category system and the sensory styles behind these categories. This study investigated how assessors with different level of expertise categorized Beaujolais wines from general to more specific levels of categorization (grape variety, appellation, and “lieu-dit”) in both perceptual (wines) and conceptual (wine labels) conditions. Based on the literature on expertise, we expected a stronger effect in the perceptual condition, in particular for the most specific levels of categorization. For each wine categorization level, three sets of 12 wines were tasted by three panels of 60 assessors: a panel of unfamiliar novices with no much exposure to Beaujolais wines; a panel of familiar novices with regular exposure to Beaujolais wines; and a panel of experts from the Beaujolais. In both perceptual and conceptual conditions, assessors were asked to perform a binary sorting task, followed by a verbalisation task. Data were analysed using DISTATIS. At each level, with a few exceptions, a clearer separation was observed between the two categories in the conceptual condition than in the perceptual condition. Although the experts categorized the labels by grape variety, they did not spontaneously categorize the wines in that way. Finally, we observed a clear expertise effect only in the conceptual condition. This result will be discussed in terms of expertise acquisition and categorization processes. 相似文献
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Understanding quality perception requires focusing both on product proprieties and consumers’ representations. The goal of this study was to access the representations of perceived extrinsic wine quality of consumers from two different wine regions in two European countries with an important wine tradition: La Rioja-RJ-(Spain) and Côtes du Rhône-CdR-(France).Twenty commercial red wines (ten from RJ and ten from CdR) were evaluated in terms of quality by means of a categorization task. Ninety-five French and 93 Spanish consumers had to categorize the 20 wines according to four levels of quality going from very low to very high quality.Three clusters of French and two of Spanish consumers have been identified. Country-of-origin of wine arises as the most important extrinsic cue for less-involved French and Spanish consumers, while more-involved consumers with higher knowledge in wine are able to interpret and use a wider range of cues. Consumers’ knowledge, involvement and nationality appear to be good predictors of quality perception.These results are relevant for the field of sensory analysis in that they help understanding the construction of quality perception. The wine industry can benefit also from these results, especially when exporting wines. This cross-cultural study may help them to develop marketing strategies able to enhance the quality perception of wines and to make use of different extrinsic factors. 相似文献
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论文介绍了文本分类技术的研究进展及发展方向.给出了中英文文本分类系统构建的一般模型和过程,分析总结了中英文文本分类过程中的异同,并介绍了针对这些异同因素常用的处理方法. 相似文献
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