We present definitions of the correlation degree and correlation coefficient of multi-output functions. Two relationships about the correlation degree of multi-output functions are proved. One is between the correlati...We present definitions of the correlation degree and correlation coefficient of multi-output functions. Two relationships about the correlation degree of multi-output functions are proved. One is between the correlation degree and independency, the other is between the correlation degree and balance. Especially the paper discusses the correlation degree of affine multioutput functions. We demonstrate properties of the correlation coefficient of multi-output functions. One is the value range of the correlation coefficient, one is the relationship between the correlation coefficient and independency, and another is the sufficient and necessary condition that two multi-output functions are equivalent to each other.展开更多
以Web of Science引文数据库收录的生物核磁共振领域论文为样本,采用文献计量的方法,对该领域的论文发表变化情况进行了统计分析,对高频关键词进行深入分析,利用Citespace软件绘制高频词共现图谱,并结合该领域专家智慧进行研究热点与发...以Web of Science引文数据库收录的生物核磁共振领域论文为样本,采用文献计量的方法,对该领域的论文发表变化情况进行了统计分析,对高频关键词进行深入分析,利用Citespace软件绘制高频词共现图谱,并结合该领域专家智慧进行研究热点与发展趋势的解读;同时,利用Citespace软件的突现词发现功能,分析该领域的前沿领域,从定性与定量相结合的角度分析该领域的研究热点与前沿技术。展开更多
本研究以百万词的商务信函语料库(Business Letter Corpus)的三词词汇组合频次分布表为基础,选取107个使用频率最高的三词词块作为目标词块,考察英语专业学生商务信函写作中输出这些词块的情况。研究结果显示,学生在目标词块的使用上与...本研究以百万词的商务信函语料库(Business Letter Corpus)的三词词汇组合频次分布表为基础,选取107个使用频率最高的三词词块作为目标词块,考察英语专业学生商务信函写作中输出这些词块的情况。研究结果显示,学生在目标词块的使用上与英语本族语者存在显著性差异,近60%的目标词块在学生商务信函写作中的输出率低于BLC中的出现率。存在的具体问题:句子框架词块输出率很低,信函写作中学生对含有第一人称复数的词块过度输出,以及含有情态动词的词块输出不足。展开更多
文摘We present definitions of the correlation degree and correlation coefficient of multi-output functions. Two relationships about the correlation degree of multi-output functions are proved. One is between the correlation degree and independency, the other is between the correlation degree and balance. Especially the paper discusses the correlation degree of affine multioutput functions. We demonstrate properties of the correlation coefficient of multi-output functions. One is the value range of the correlation coefficient, one is the relationship between the correlation coefficient and independency, and another is the sufficient and necessary condition that two multi-output functions are equivalent to each other.
文摘以Web of Science引文数据库收录的生物核磁共振领域论文为样本,采用文献计量的方法,对该领域的论文发表变化情况进行了统计分析,对高频关键词进行深入分析,利用Citespace软件绘制高频词共现图谱,并结合该领域专家智慧进行研究热点与发展趋势的解读;同时,利用Citespace软件的突现词发现功能,分析该领域的前沿领域,从定性与定量相结合的角度分析该领域的研究热点与前沿技术。
文摘本研究以百万词的商务信函语料库(Business Letter Corpus)的三词词汇组合频次分布表为基础,选取107个使用频率最高的三词词块作为目标词块,考察英语专业学生商务信函写作中输出这些词块的情况。研究结果显示,学生在目标词块的使用上与英语本族语者存在显著性差异,近60%的目标词块在学生商务信函写作中的输出率低于BLC中的出现率。存在的具体问题:句子框架词块输出率很低,信函写作中学生对含有第一人称复数的词块过度输出,以及含有情态动词的词块输出不足。
