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Search Results: 1 - 10 of 75483 matches for " 徐金安? "
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理性主义与经验主义相结合的机器翻译研究策略
金安
计算机科学 , 2011,
Abstract: 主要介绍了基于规则、基于实例和基于统计等3种主流机器翻译方法,探讨了自然语言处理技术和机器翻译中基于规则的理性主义方法和基于统计的经验主义方法的优缺点,结合机器翻译研究的现状和发展方向,提出了规则和统计相结合的机器翻译方法的基本思路,阐述了词义消歧中的理性主义方法和经验主义方法相结合的发展方向,对机器翻译的发展趋势进行了探讨。
30万居民白化病的调查分析1)
金安,振华
遗传 , 1988,
Abstract: 白化病是一种常染色体隐性遗传病,本文对辽宁省锦州市人群体中的白化病患病情况进行了调查,目的是为防止白化病的发病和遗传咨询提供依据。
Rationalism and Empiricism on the Combination in Machine Translation
理性主义与经验主义相结合的机器翻译研究策略

XU Jin-an,
金安

计算机科学 , 2011,
Abstract: This paper firstly discussed the development of machine translation, secondly described the advantages and disadvantages of the rationalism and empiricism in natural language processing and machine translation, and thirdly introduced our basic ideas of combination of the rule-based approach and statistical approach. Furthermore, the paper deliberated the tendency of combination of the rationalism and empiricism in word sense disambiguation, finally summarizcd the developmental tendency of machine translation.
综放开采端面变形控制的模糊聚类分析
金安,焦申华,
煤炭学报 , 2005,
Abstract: 以数值模拟试验的结果为基础,依据模糊控制理论,利用加权模糊聚类分析法建立了煤层综放开采端面变形的参数预测模型,并得到了一组影响端面变形值的权重向量.
及其衍生物对空肠弯曲菌体外粘附抑制作用的研究
金安,王焕妞,鸿贞
微生物学通报 , 1990,
Abstract: 本实验采用体外CFU法及扫描电镜技术,观察了20种糖类及其衍生物对空肠弯曲菌体外粘附的抑制作用。实验结果表明:D-甘露塘、L-岩藻糖、棉子糖、α-甲基甘露塘、水解乳糖及N-乙酸半乳糖胺对CJ-S131菌株粘附Hep-2细胞具有部分抑制作用。其中D-甘露塘和L-岩藻糖的粘附抑制率分别为44.6%和38%,在1-20mg/ml的塘浓度范围内,这两种塘对空弯菌粘附作用的抑制效应随搪浓度上升而提高。其余4种糖的粘附抑制率在13-36%之间。此外,本实验结果还提示,塘的分子构型与其抑制细菌粘附的能力有关。
基于字形与语音的音译单元对齐方法
Integrating of Grapheme-Based and Phoneme-Based Transliteration Unit Alignment Method

刘博佳,金安,陈钰枫,张玉洁
- , 2016, DOI: 10.13209/j.0479-8023.2016.001
Abstract: 摘要 为了解决仅采用基于语音或基于字形的音译方法造成的误差过大问题, 以汉英音译为主要研究对象, 运用统计与规则的理论思想, 提出融合基于语音和字形的音译单元对齐方法, 设计了4个实验, 与传统方法进行对比。实验结果显示, 该方法能够很好地提高机器音译的准确性。
Abstract In order to solve the errors caused by only using the pheneme-based method or the grapheme-based method, applying the theory of statistics and rules, this paper proposes a new method for transliteration unit alignment which integrates the two main transliteration methods. Four experiments are designed to compare with the traditional methods. Experimental results show that proposed method outperforms other methods in terms of performance in machine transliteration.
使用源语言复述知识改善统计机器翻译性能
Improved Statistical Machine Translation with Source Language Paraphrase

苏晨,张玉洁,郭振,金安
- , 2015,
Abstract: 摘要 为了缓解双语语料不足导致的翻译知识欠缺问题, 提出基于复述技术的翻译框架。此框架利用第三种语言获取带有概率的复述知识表, 以Lattice表示输入句子的多种复述形式, 扩展解码器使之可以对Lattice形式的输入进行解码, 将复述知识作为特征加入到对数线性模型的目标函数中。在保持原始翻译知识表不变的情况下, 此框架不仅可以增大短语翻译表对源语言现象的覆盖率, 也能够增加候选译文表现形式的多样性。在3个不同规模训练集上的对比实验结果表明, 在训练语料规模最小的情况下(10 K句对), 系统性能有明显提升(BLEU+1.4%); 在训练语料规模最大的情况下(1 M句对), 系统性能也取得一定提升(BLEU+ 0.32%)。
Abstract The performance of statistical machine translation (SMT) suffers from the insufficiency of parallel corpus. To solve the problem, the authors propose a paraphrase based SMT framework with three solutions: 1) acquiring paraphrase knowledge based on a third language; 2) expressing multiple paraphrases of input sentence in a lattice and modifying decoder to be able to process it; 3) integrating paraphrase knowledge as features into log-linear model. In this way, not only more expressions in source language can be covered, but also more expressions in target language can be generated as candidate translations. To verify proposed method, experiments are conducted on three training data sets with different sizes, and evaluate the improvement of the performance of SMT system contributed by paraphrasing. Experimental results show that the translation performance is improved significantly (BLEU+1.4%) when the parallel corpus is small (10 K), and a good performance (BLEU+0.32%) is also achieved when parallel corpus is large enough (1 M).
基于支持向量机的线条图像语义主题自动发现方法
Automatic Semantic Topic Discovery Approach of the Line Image Based on Support Vector Machine
 [PDF]

金聪,金安
Journal of Image and Signal Processing (JISP) , 2014, DOI: 10.12677/JISP.2014.33011
Abstract:
提出了一种基于支持向量机分类器的线条图像语义主题自动发现方法。首先对训练图像进行分块,在对图像子块进行聚类后,得到由聚类中心构成的类集合;从每幅训练图像的注释文字中提取所有名词构成关键词集合。其次,对未标注的测试图像进行同样分块处理,计算子块与每个关键词的相关性,得到每个子块的标注词集合。最后,计算每个关键词在各个子块标注中出现的次数,取出现次数最多的关键词作为图像的语义主题。实验结果表明,所提出的方法对于线条图像的语义主题自动发现是有效的,具有比较好的性能。
A semantic topic discovery approach of the line image, based on support vector machine, has been proposed in this paper. Firstly, the training images are divided into non-overlapping sub- blocks with same size. After clustering image sub-blocks, we obtained class set generated by cluster centers, and extracted all nouns from text annotation of each training image in order to obtain a keyword set. Secondly, the un-label testing image is also divided into non-overlapping sub-blocks as same as training images, we calculated the correlation between the sub-block and each keyword, and a keywords set for each sub-block may be obtained. Finally, the number of each keyword appearing in the each sub-block is calculated, we let the keywords with maximum to occurrences number be the semantic topics of the line image. The experimental results confirm that proposed automatic semantic topic discovery approach for line image is effective and has good performance.
德国科学应为祖国与和平服务——德国统一社会党第一书记W.乌布利希同志在1954年3月30日德国统一社会党第四次代表大会上所作的中央委员会的总结报告中的一部分
金安
科学通报 , 1954,
Abstract: 从第三次党代表大会召开以来,工人阶级和知识分子的友好合作获得了良好的成绩。民主德国的科学家为我国国民经济作出了巨大的成就,每年对於突出的科学工作和对於生产方法上的发明典基本改进的表扬,都充分地证实了这一点。8位优秀的科学家获得了“人只功勋科学家”的光
沥青混合料最大骨料粒径及碾压厚度对碾压效果的影响
金安
公路交通科技 , 1987,
Abstract: 骨料最大粒径对沥青混合料的骨架结构及力学性能有很大影响。在决定骨料最大粒径时,路面层厚又是个重要条件。骨料最大粒径及碾压层厚度对碾压效果到底有什么影响,一直是人们关心的问题。这在基层、底基层都有过不少研究,而对沥青面层来说,研究得还很少。我国沥青面层一般都比较薄,相对来讲,骨料最大粒径又偏大,这个问题就尤显重要。本文是关于骨料最大粒径及碾压层厚度如何影响压实效果的实验研究报告,供现场施工参考。
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