论文标题
NASA天体物理数据系统中的二阶操作员
Second Order Operators in the NASA Astrophysics Data System
论文作者
论文摘要
二阶运算符（SOO）是数据库函数，基于在初始查询中返回的对象的属性形成辅助查询；他们可以提供强大的方法来研究复杂的多部分信息图。 NASA天体物理数据系统（ADS）实施了四个使用引用，参考，下载和抽象文本的SOOS，评论，有用，趋势和类似方法。 本教程详细描述了这些操作员，无论是单独还是与其他功能结合在一起。它是针对科学家和其他希望更全面地使用ADS数据库的人的。假定广告的基本知识。
Second Order Operators (SOOs) are database functions which form secondary queries based on attributes of the objects returned in an initial query; they can provide powerful methods to investigate complex, multipartite information graphs. The NASA Astrophysics Data System (ADS) has implemented four SOOs, reviews, useful, trending, and similar which use the citations, references, downloads, and abstract text. This tutorial describes these operators in detail, both alone and in conjunction with other functions. It is intended for scientists and others who wish to make fuller use of the ADS database. Basic knowledge of the ADS is assumed.
