In this letter, the homotopy analysis method is successfully applied to solve the Relativistic Toda lattice system. Comparisons are made between the results of the proposed method and exact solutions. Analysis results...In this letter, the homotopy analysis method is successfully applied to solve the Relativistic Toda lattice system. Comparisons are made between the results of the proposed method and exact solutions. Analysis results show that homotopy analysis method is a powerful and easy-to-use analytic tool to solve systems of differential-difference equations.展开更多
随着大数据时代的到来,互联网已经成为人们最大的信息来源之一,对于网页处理多采用结构化方法。现有的面向结点的网页解析方法分割粒度过小,容易割裂文字的语义相关性;而基于分块的网页解析器无法过滤文字内部的噪音信息。针对以上两种...随着大数据时代的到来,互联网已经成为人们最大的信息来源之一,对于网页处理多采用结构化方法。现有的面向结点的网页解析方法分割粒度过小,容易割裂文字的语义相关性;而基于分块的网页解析器无法过滤文字内部的噪音信息。针对以上两种传统结构化方法的不足,我们提出了一种面向基本信息单元(Basic Information unit)的网页解析方法。本文给出了BIU的定义,利用改进后的DOM解析工具生成了网页DOM树,通过剪枝和BIU识别等操作步骤,最终得到了以基本信息单元为粒度的网页结构,适合用于网页内容的提取。展开更多
基金Supported by Leading Academic Discipline Program, 211 Project for Shanghai University of Finance and Economics (the 3rd phase)
文摘In this letter, the homotopy analysis method is successfully applied to solve the Relativistic Toda lattice system. Comparisons are made between the results of the proposed method and exact solutions. Analysis results show that homotopy analysis method is a powerful and easy-to-use analytic tool to solve systems of differential-difference equations.
文摘随着大数据时代的到来,互联网已经成为人们最大的信息来源之一,对于网页处理多采用结构化方法。现有的面向结点的网页解析方法分割粒度过小,容易割裂文字的语义相关性;而基于分块的网页解析器无法过滤文字内部的噪音信息。针对以上两种传统结构化方法的不足,我们提出了一种面向基本信息单元(Basic Information unit)的网页解析方法。本文给出了BIU的定义,利用改进后的DOM解析工具生成了网页DOM树,通过剪枝和BIU识别等操作步骤,最终得到了以基本信息单元为粒度的网页结构,适合用于网页内容的提取。