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21.
Tshering C. Dorji El-sayed Atlam Susumu Yata Mahmoud Rokaya Masao Fuketa Kazuhiro Morita Jun-ichi Aoe 《Information processing & management》2010
Minimal Prefix (MP) double array is an efficient data structure for a trie. However, its space efficiency is degraded by the non-compact management of suffixes. This paper presents three methods to compress the MP double array. The first two methods compress the MP double array by accommodating short suffixes inside the leaf nodes, and pruning leaf nodes corresponding to the end marker symbol. These methods achieve size reduction of up to 20%, making insertion and deletion faster at the same time while maintaining the retrieval time of O(1). The third method eliminates empty spaces in the array that holds suffixes, and improves the maximum size reduction further by about 5% at the cost of increased insertion time. Compared to a Ternary Search Tree, the key retrieval of the compressed MP double array is 50% faster and its size is 3–5 times smaller. 相似文献
22.
Masafumi Koyama Kazuhiro Morita Masao Fuketa Jun-Ichi Aoe 《Information processing & management》1998,34(6):761-773
Case structures are useful for natural language systems, such as word selection of machine translation systems, query understanding of natural language interfaces, meaning disambiguation of sentences and context analyses and so on. The case slot is generally constrained by hierarchical concepts because they are simple knowledge representations. With growing hierarchical structures, they are deeper and the number of concepts to be corresponded to one word increases. From these reasons, it takes a lot of cost to determine whether a concept for a given word is a sub-concept for concepting the case slot or not. This paper presents a faster method to determine the hierarchical relationships by using trie structures. The worst-case time complexity of determining relationships by the presented method could be remarkably improved for the one of linear (or sequential) searching, which depends on the number of concepts in the slot. From the simulation result, it is shown that the presented algorithm is 6 to 30 times faster than linear searching, while keeping the smaller size of tries. 相似文献
23.
One of Jensen's internal criteria for the detection of bias was applied to the standardization data for the Boehm Test of Basic Concepts (BTBC). Despite sizable social class differences in mean scores, differences in the rank orders of item difficulties were negligible. Thus, by this one criterion, there was little evidence of test bias. Instead, the findings suggest that children of different socioeconomic levels master basic concepts in about the same temporal order, differing only in the rate at which they do so. 相似文献
24.
在英语交际能力测试理论的指导下,石家庄铁道大学外语系改变以往口语测试的形式、内容和标准,将交际能力测试融合到英语口语测试中。测试结束后,通过对成绩进行数据分析和对学生进行问卷调查,探讨如何在实际教学中实行有效的英语口语测试,进一步加强大学生英语口语交际能力并提高主动意识。 相似文献
25.
认为台湾研究生教育质量保障体系在结构上包括构成主体之维的自我评鉴、构成专业之维的系所评鉴、构成过程之维的教学评鉴和构成社会之维的专业认证,并以“政策推动,有规可依”“单位主体,多元参与”“学生中心,兼顾发展”“内外融通,多维整合”为特点。提出应借鉴台湾地区相关经验,优化研究生教育质量观,完善质量保障理念;促进多元主体共同参与,丰富质量保障架构;强化高校内部质量保障,营造质量保障文化。 相似文献
26.
基于网络传播的重要特征,阐释网络媒介在武术传播存在的优势,以期阐明武术利用网络传播的合理性,随后也分析了网络传播给武术传播带来的不利影响,最后提出相应建议,旨在借助网络传播的传承武术,普及科学真实的武术知识与武术文化,进而实现武术的大繁荣。 相似文献
27.
Herbert Bergmann Valerie Dundas-Grant Daniel Hart Takashi Morita Olusola Avoseh Warwick B. Elley Thomas N. Kahl A. J. Cropley Ingeborg Willke David Layton Birgit Brock-Utne Francisco Gomes de Matos James Lynch 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1984,30(1):91-116
28.
新冠肺炎疫情以来,线上直播教学在国内外高校维持正常教学工作中发挥着重要作用.与此同时,线上教学引起的教、学主体行为变化等情况直接影响教学质量.与线上直播教学相匹配的线上考核方式和策略对准确、有效地评估教学质量和学生学习产出至关重要.从OBE理念中对学生学习产出评价的相关要求出发,结合线上直播教学中教、学主体行为变化的特点,剖析现有考核方式实施于线上教学质量评估的局限及原因,思考、设计线上直播教学的考核方式. 相似文献
29.
不可知论(Agnosticism)一词,是由英国博物学家赫胥黎于1869年首次提出的。"不可知论"一词虽出现较晚,但具有不可知论思想的哲学家却自古至今从未间断过。康德和休谟都是近代西方哲学史上著名的不可知论者。作为不可知论,休谟的不可知论和康德的不可知论有许多共同点。 相似文献
30.
"信息技术生产率悖论"的动态演进 总被引：1，自引：0，他引：1
按照时间先后顺序,探讨了“信息技术生产率悖论”的提出、理论界的解释以及在发达国家消失的过程。基于此,认为“信息技术生产率悖论”应当具有阶段存在性,在随时间动态演进的进程中,不同发展水平的国家和地区在不同阶段都会存在一定程度的“信息技术生产率悖论”现象。 相似文献