它在数据库项目中发挥了令人吃惊的作用，尤其是用于将数据集从传统数据库集成到XML文档系统时。
It is surprisingly useful in database projects, especially for integrating data sets from traditional databases into XML document systems.
为了避免由于文档透明性而产生的信息泄漏问题，您最终可能需要使用按照用户会话来隔离xml数据集的“需要了解”的系统，而不仅仅是按照应用程序来隔离xml数据集的系统。
To avoid leakage that stems from document transparency, you might end up with a need-to-know system that isolates XML data sets by user session and not just by application.
在评分和评分结果后系统趋向把这些文档评为很高的等级，同时返回很少的结果集。
After scoring and sorting results the system tends to rank these documents very high while returning few search results.
这些系统存在查询返回文档集大、准确率低和普通用户不便于构造查询等不足。
Such systems have some inherent drawbacks, such as large retrieved documents set, low precision and inconvenient for ordinary users to construct queries.
构建了基于SDD算法的中文农业信息检索实验系统，验证大规模文档集下sdd算法的可行性和“二次主题漂移”模式的可行性。
Building the experiment system based on the SDD and validating the feasibility on large scale documents and "two theme shift" model.
构建了基于SDD算法的中文农业信息检索实验系统，验证大规模文档集下sdd算法的可行性和“二次主题漂移”模式的可行性。
Building the experiment system based on the SDD and validating the feasibility on large scale documents and "two theme shift" model.
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