Purpose

Library science and information science, two subdisciplines of library and information science (LIS), are developed independently but interconnectedly. In this information age, LIS is in a special period of transformation and development, which has caused some changes in both library science and information science. By accurately capturing these changes and analyzing them, the authors can effectively map the development of LIS in the new century, thus providing a reference for the evolution and development of the field. The purposes of this paper are to explore the mainstream research fields and frontiers of library science and information science, respectively, since the new century, and to make a comparative analysis of the two subdisciplines.

Design/methodology/approach

By using CiteSpace to visualize LIS journals, this study draws knowledge maps of the two subdisciplines of LIS through the co-occurrence descriptors network. Using burst detection algorithm, this study detects words of high frequency variation by investigating the time frequency distribution.

Findings

The results show that the research focus of library science has experienced a change from traditional to digital library while information science has moved from information to data focus. This study also finds the similarities and differences between mainstream areas of library science and information science.

Originality/value

This study focuses on the evolution of library science and information science, and explores their mainstream research fields and frontiers in the 21st century. These findings will promote the transformation and development of LIS as well as provide research directions for scholars in the field.

中文翻译：

---

新世纪以来图书情报学研究进展分析

目的

图书馆学和情报学是图书馆情报学的两个分支学科，既独立发展又相互联系。在信息时代，图书馆信息学正处于一个特殊的转型和发展时期，引起了图书馆学和情报学的一些变化。通过准确捕捉这些变化并进行分析，作者可以有效地描绘新世纪LIS的发展，从而为该领域的演变和发展提供参考。本文的目的是分别探讨新世纪以来图书馆学和情报学的主流研究领域和前沿，并对两个学科进行比较分析。

设计/方法论/途径

本研究利用CiteSpace对LIS期刊进行可视化，通过共现描述符网络绘制LIS两个分支学科的知识图谱。本研究使用突发检测算法，通过研究时频分布来检测高频变化的单词。

发现

研究结果表明，图书馆学的研究重点经历了从传统图书馆向数字图书馆的转变，信息科学的研究重点从以信息为中心转向以数据为中心。本研究还发现了图书馆学和信息学主流领域之间的异同。

原创性/价值

本研究重点关注图书馆学和情报学的演变，探讨其在21世纪的主流研究领域和前沿。这些发现将推动LIS的变革和发展，并为该领域的学者提供研究方向。