Bradley J
School of Library and Information Science, Indiana University, Indianapolis 46202, USA.
J Urban Health. 1998 Dec;75(4):864-77. doi: 10.1007/BF02344514.
Information quality, considered abstractly, may seem to be a relatively straightforward matter. Information should be accurate, up to date, useful, and attributable to reputable sources. However, determining the quality of a specific piece of information for a specific use is a more complicated process. The concept of applied information quality is defined in this paper as a judgment of information quality (1) made by a specific person or persons, (2) in a specific situational context for use of that information, and (3) based on the characteristics of the information. Each of the three elements of the judgment influences its outcome. Information judgments are made by individuals in the context of their discipline and community of practice. The situational context includes the specifics of the context for use of the information, the questions that the information must address, the strategy for locating potentially relevant information, and the body of information that is retrieved and is available for judgment and use. The paper focuses on the third element of a judgment of information quality--the characteristics of the information on which the judgment is based. These characteristics are grouped for discussion under six metaquestions: What is the information item of interest? How was the focal information created and when? Who is involved with the focal information? From what perspective was the information created and why? What relationships does the focal information have to other information--its antecedents, sources, and other related information? What approval, review, or other filtering processes, if any, has the information gone through? Approaches to improving quality judgments can focus on improving the information itself, improving the channels that organize and deliver information, or improving the individual's ability to judge the quality of information for a specific purpose. These are not mutually exclusive and, probably, all should be pursued. Applied judgments of information quality are ultimately the responsibility of the individuals using information; they need to be supported in this professional activity as they are in the other responsibilities of their professional practice.
抽象地看,信息质量似乎是一个相对简单的问题。信息应该准确、最新、有用,并且源自可靠的来源。然而,确定特定信息在特定用途下的质量是一个更为复杂的过程。本文将应用信息质量的概念定义为一种信息质量判断:(1)由特定的个人或群体做出;(2)在使用该信息的特定情境中;(3)基于信息的特征。判断的这三个要素都会影响其结果。信息判断是个人在其学科和实践社区的背景下做出的。情境包括信息使用背景的具体情况、信息必须回答的问题、查找潜在相关信息的策略,以及检索到的可供判断和使用的信息主体。本文重点关注信息质量判断的第三个要素——作为判断基础的信息特征。这些特征在六个元问题下进行分组讨论:感兴趣的信息项是什么?核心信息是如何创建的以及何时创建的?谁参与了核心信息?信息是从什么角度创建的以及为什么?核心信息与其他信息——其前身、来源和其他相关信息——有什么关系?该信息经过了哪些批准、审查或其他筛选过程(如果有)?提高质量判断的方法可以侧重于改进信息本身、改进组织和传递信息的渠道,或者提高个人针对特定目的判断信息质量的能力。这些方法并非相互排斥,可能都应该加以采用。信息质量的应用判断最终由使用信息的个人负责;在这项专业活动中,他们需要得到支持,就如同在其专业实践的其他职责中一样。