信息技术.JP搜索.第3部分:查询格式

[中文适用范围]： ISO/IEC 24800 的这一部分，也称为“JPSearch 查询格式 (JPQF)”，从三个方面为图像搜索和检索系统提供了标准化接口：输入查询格式、输出结果格式和查询管理。输入查询格式为用户/系统提供了一组精确的输入参数来描述他们的搜索条件，以及一组首选的输出参数来描述返回结果集。输出结果格式为用户/系统提供了一组输出参数来描述聚合的返回结果集，以供用户呈现或机器使用。查询管理提供了一种基于服务属性（例如支持的查询格式）选择服务（例如 MPEG-7 数据库）或聚合服务（例如管理一组不同服务的服务提供商）的方法。目标是定义一种查询语言，为业界提供一种标准化格式来接受和响应用户/系统对图像搜索的规范。 [外文原描述]： ISO/IEC 24800-3:2010, also known as “JPSearch Query Format (JPQF)”, provides a standardized interface for image search and retrieval systems in three aspects - input query format, output result format and query management - as a specialization of ISO/IEC 15938-12:2008 for images and accompanying metadata. The top-level tools defined in ISO/IEC 24800-3:2010 are InputQuery, FetchResult, OutputResult and Management. Both InputQuery and FetchResult tools belong to input query format. The input query format provides users/systems with a set of precise input parameters to describe their search criteria in addition to a set of preferred output parameters to depict the return result sets through InputQuery. Through InputQuery, users can use queries of various types, such as query by media, query by description, query by free text, and combine them using algebraic or logical expressions. Through FetchResult, users can retrieve search results of a query from the past. When a query request is issued using the asynchronous mode, the FetchResult element is used to indicate the preparedness of the user to receive results. When a query request is issued using the synchronous mode, the FetchResult element is used to receive individual pages of the result set (if paging is activated). The OutputResult, which is the output result format, provides users/systems with a set of output parameters to describe the aggregated return result sets for user presentation or machine consumption. The Management tool, which is the query management tool set, provides a means for selecting services (e.g. MPEG-7 database or Core Metadata services) or aggregated services (e.g. service provider that administers a set of different services) based on service properties (e.g. supported query format, supported metadata standard). The goal is to define a query language that provides the industry with a standardized format to accept and respond to user/system specification for image searches. In the framework of JPSearch, the JPSearch Query Format is designed to be used as an interface between querying client and answering servers, as well as between aggregation service agent and individual service providers.