让网页变更可被发现：面向网络档案的变更文本搜索界面
Making Changes in Webpages Discoverable: A Change-Text Search Interface for Web Archives
AI总结：
针对现有网络档案搜索界面无法便捷查找网页变更的问题，研究提出了一款变更文本搜索引擎，支持变更可视化与相关查询，经美国联邦环境网页验证效果良好。
摘要：
网页会随时间发生变化，而网络档案保存着网页历史版本的副本。网络档案的用户（例如记者）希望查找并查看网页随时间的变化情况，但当前的网络档案搜索界面并不支持这一任务。对于具备全文搜索功能的网络档案，匹配搜索查询的同一网页的多个版本会被单独展示，却未枚举变更内容；或是被归为一组，从而掩盖了变更。我们提出了一种变更文本搜索引擎，可让用户查找网页中的变更。我们介绍了该搜索引擎后端与前端的实现，其中包括一款工具，能让用户以动画形式在上下文中查看两个网页版本之间的变更。我们利用2016年至2020年间发生变化的美国联邦环境网页对该搜索引擎进行了评估。变更文本搜索结果页面可清晰显示术语和短语从网页中添加或移除的时间。用户还可查询倒排索引，以识别语料库中显著且频繁被删除的术语。
英文摘要：
Webpages change over time, and web archives hold copies of historical versions of webpages. Users of web archives, such as journalists, want to find and view changes on webpages over time. However, the current search interfaces for web archives do not support this task. For the web archives that include a full-text search feature, multiple versions of the same webpage that match the search query are shown individually without enumerating changes, or are grouped together in a way that hides changes. We present a change text search engine that allows users to find changes in webpages. We describe the implementation of the search engine backend and frontend, including a tool that allows users to view the changes between two webpage versions in context as an animation. We evaluate the search engine with U.S. federal environmental webpages that changed between 2016 and 2020. The change text search results page can clearly show when terms and phrases were added or removed from webpages. The inverted index can also be queried to identify salient and frequently deleted terms in a corpus.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
