中文摘要：

工程信息具有形式复杂和内容分散的特点，其结构的关联性和数据的兼容性直接影响着数字化工程信息资源的有效管理和充分利用。特别是在工程信息的长期安全保存和可靠调用过程中，存在着信息和其使用系统之间的兼容问题和对信息定期检查、移存、转化的时间和效率问题。目前国内外对这两类问题还没有可行的解决方法和技术。根据“六度分离”现象和小世界网络模型，对工程软件的输入输出格式之间的转换关系进行实验分析，验证了其小世界效应，进一步通过Protégé构建的本体查询格式转换的路径，为解决大量级和分散性工程信息的移存提供了可靠的科学依据。

英文摘要：

Engineering information is of sophisticated formats and diverse contents, its domain context and data compatibility directly affect the effective management and full utilization of information resources in digital engineering practice. In particular, for long term retention, preservation and utilization of engineering informa- tion, there have been compatibility problems in between data and its host systems and the problems in lead-time and efficiency for regular data check, migration and transformation, for which there has so far been no practical solutions and available satisfactory methods. This paper researches the so-called ＂six degrees of separation＂ phe- nomenon and small-world network model and thereby analyzes the conversion relationship of the engineering soft- ware input and output format via experiments, and verifies its small-world effect. By constructing the conversion path of ontology query format, it establishes reliable benchmarking for migrating large-scale and diverse engineer- ing information.