This text search package and its associated functions, referred to as the text search engine, is specifically designed to perform fast retrieval and automatic indexing of text data.
这个文本搜索包和它的相关函数被称为文本搜索引擎，它是专门设计用来执行文本数据的快速检索和自动索引。
Lucene is an open source information-retrieval search engine, best known for its full-text indexing capabilities and its ability to search the Internet.
Lucene是一个开源的信息检索搜索引擎，以它的全文本索引能力和搜索互联网能力而著名。
As the text with high-level semantic feature and plays an important role on understanding, indexing and retrieval image content.
由于文字具有高级语义特征，对图片内容的理解、索引、检索具有重要作用，因此，研究图片文字提取具有重要的实际意义。
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