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The profusion of online resources calls for tools and methods to help Internet users find precisely what they are looking for. Quality controlled gateway CISMeF provides such services for health resources. However, the human cost of maintaining and updating the catalogue are increasingly high. This paper presents the automatic indexing system currently developed in the CISMeF team to be used as such for preliminary indexing, or after human reviewing for the final indexing. The system architecture, using the INTEX platform for MeSH term extraction is detailed. The results of a first evaluation tend to indicate that the automatic indexing strategy is relevant, as it achieves a precision comparable to that of other existing operational systems. Moreover, the system presented in this paper retrieves keyword/qualifier pairs as opposed to single terms, therefore providing a significantly more precise indexing. Further development and tests will be carried out in order to improve the coverage of the dictionaries, and validate the efficiency of the system in the indexers’ everyday work. 相似文献
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Divide and separate are semantically similar,however,in English teaching and learning,it is not easy to explain how they are used and learners of English often confuse them.Based on the Corpus of Contemporary American English(COCA),this essay compares the use of these two words by analyzing the collocations with prepositions,cardinal numbers and nouns. 相似文献
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俞碧芳 《福建师大福清分校学报》2007,(4):38-43
语料库近年来在外语教学中得到越来越广泛的应用。本文首先对语料库的定义、发展和研究情况作了简要介绍,接着阐述语料库辅助英语词汇教学的理论基础,介绍笔者使用《新视野大学英语》教材语料库辅助词汇教学的一些尝试,最后通过实验和问卷调查重点探讨并检验语料库辅助词汇教学的效果。 相似文献
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语料库媒介构建的数据驱动的英语阅读范式使用原始语料或通过语料库工具软件得出的数据进行英语阅读的探索式学习,是一种将语料库语言学研究成果和认知理论相结合并应用于英语阅读活动的新实践。文章将从语料库媒介下的英语阅读资源、阅读策略和技能、阅读分析和阅读练习等方面探讨阅读过程中各环节的新变化,并提出这一阅读范式的优势和目前的局限性。 相似文献
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现代科学技术的广泛运用在为社会带来巨大利益的同时,也不可避免地产生了大量的致险源,人们稍有不慎就可能危及他人的生命财产安全,目前过失犯罪率不断上升就是明证。过失犯罪是由主体内外因素综合互动引发的,但是行为主体社会责任感不强、经验泛化和注意品质的缺陷是导致过失犯罪的主要因素。因此,行为主体注意调适和优化上述三个方面,就能够有效地预防过失犯罪。 相似文献
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大学英语教材在我国的大学英语教育体系中占有极其重要的位置,对大学英语教材的研究关乎到我国高等教育普及的进程。基于语料库语言学通过对比不同大学英语教材的词汇出现频率、词汇量等因素,探讨优化大学英语教材的选择机制。研究结果显示:教材总词汇数与难度控制基本成正比态势,单篇字数平均值越高,课文学习难度越大;难度越大则用户友善度就越低。教育者应选择已知词汇所占比重较大,词汇量和难度较为适中的教材,这有助于提高学生的接受程度和学习兴趣,从而提高教学有效性。 相似文献
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采用实证的研究方法,从语料库文体学的视角出发,建立一个包含培根随笔集Essays的小型语料库,并借助于WordSmith软件,详细比较Essays和参照语料库Flob的部分文体特征,发现Essays具有词汇丰富,句式灵活多变等鲜明的特点,验证了语料库的方法在文体学研究中的有效性。 相似文献
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Cantlon JF Davis SW Libertus ME Kahane J Brannon EM Pelphrey KA 《Learning and individual differences》2011,21(6):672-680
In an effort to understand the role of interhemispheric transfer in numerical development, we investigated the relationship between children's developing knowledge of numbers and the integrity of their white matter connections between the cerebral hemispheres (the corpus callosum). We used diffusion tensor imaging (DTI) tractography analyses to test the link between the development of the corpus callosum and performance on symbolic and non-symbolic numerical judgment tasks. We were especially interested in the interhemispheric connections of parietal cortex in 6-year-old children, because regions of parietal cortex have been implicated in the development of numerical skills by several prior studies. Our results revealed significant structural differences between children and adults in the fibers of the corpus callosum connecting the left and right parietal lobes. Importantly, these structural differences were predictive of individual differences among children in performance on numerical judgment tasks: children with poor numerical performance relative to their peers exhibited reduced white matter coherence in the fibers passing through the isthmus of the corpus callosum, which connects the parietal hemispheres. 相似文献