Similarly, document retrieval from an XML column requires serialization, that is, converting the parsed XML format back into its original textual representation.
类似地，对xml列进行文档检索需要串行化，即，将已解析的xml格式转换回其原始文本表示。
2
Text extraction is a key technique in content-based video retrieval as textual information plays an important role in describing the content of image.
文字信息在描述图象内容时起着重要的作用，因此文字提取及识别是基于内容视频检索的关键技术。
3
The parallel computing is realized based on MPI parallel computing platform, and increased speed of retrieval. 5 The implementation of textual case retrieval system.