...Zipf distribution, optimal semantic subspace. As computers and internet become part of our daily [gap=298]关键词:信息检索,概率模型,潜在语义索引,Zipf分布,最优的语义子空间。随着计算机和互联网成为我们的日常的生活,eective和自动信息检索和ltering我的.
According to this model, we have also discussed the unifity of three empirical laws in the bibliometrics and the universality and mechanism of the Bradford-Zipf-Lotka distribution.