第一种，基于内容文本的检索，和item相关的内容，特别是文字，可用来计算相似性。
For the first, content-based analysis, content associated with the item, especially text, is used to compute similarity.
这种检索方法在文本聚类的基础上，基于概念空间并与传统的关键词检索相结合能够帮助用户快速、准确地定位所需要查找的信息。
Based on concept space and text clustering technique as well as traditional keyword searching method, it could help users to locate the information they need quickly and precisely.
针对文本图像自动处理中对图标图形识别检索的应用需求，提出一种基于投影特征的图标图形识别检索方法。
To fulfill the application requirement to retrieve logos in automatic processing document image, a logo recognition and retrieval algorithm based on projective features was presented.
网络信息检索是一种基于超文本方式的信息查询工具。
Internet information searches are a searching tool based on hypertext.
基于知识模型的文本信息检索可视化，是利用信息资源的元数据信息来进行可视化检索。
The text information retrieval visualization based on knowledge models is the visualized retrieval with metadata information of information resources.
该理论综合了现有问答系统的优点，有望基于纯粹的文本知识，实现检索、理解、推理一体化的机制。
This theory combined the excellence of current Question Answering System and is hoped to fulfill the mechanism of retrieval, understanding and reasoning based on pure text knowledge.
在研究现有文本信息检索技术的基础上，设计了基于推理网络的文本检索模型。
By the research on the existent IR (Information retrieval) technology, a text retrieval model based on inference network is designed.
其中基于文本的图像检索方法利用人工对图像进行标注作为检索特征，进行的是精确匹配；
The text-based image retrieval technique utilizes the manual image annotation as image character for retrieval and is a precise matching.
基于文本信息实现数字视频信息的检索，既符合一般用户的检索习惯，又可借助日趋成熟的文本检索技术。
Text-based digital video retrieval is not only in conformity with the user's retrieval habit, but also can make use of the ever-maturing text retrieval technology.
本文在传统检索方法的基础上，综合运用人工智能基于知识的理论和技术，提出一种文本概念检索方法。
In the paper, a knowledge based approach to tackle the information retrieval problem is presented and a new paradigm called conceptual retrieval paradigm is proposed.
传统的文本检索方式是基于提问集合和文本集合的单纯语词匹配检索，然而这并不能解决检索实践过程中存在的同义和多义问题。
The traditional method for text retrieval is based on single term matching which matches words of queries with words of documents. It can't solve the problems of synonymy and polysemy in practice.
传统的检索技术，如基于文本的图像检索，已不能完全满足人们的要求。
The traditional image retrieval technologies such as text-based method couldn't satisfy people's demand.
在上传源文本或来自MEDLINE的检索摘要后，用户能够基于预定义的或用户定义的模板类别提取句子。
After uploading source text or retrieving abstracts from MEDLINE, users can extract sentences based on predefined or user-defined template categories.
目前现有的视频检索方法主要有基于文本信息的检索方法，基于帧的视频检索方法，以及基于内容的检索方法。
There are three methods which are widely used recently in video retrieval:method based on text, on frame, and on video object.
主要包括专家定位和专家检索的文本建模方法研究。首先，研究了基于规则的专家定位方法。
The main contributions of this dissertation are summarized as follows: Firstly, we discussed the expert search model that applies text retrieval techniques.
该文分析了当前对XML数据检索的相关工作，提出了一种路径索引技术，并将之无缝结合了基于文本的倒排索引文档，以实现XML文档的内容和结构的双重检索。
This paper analyzes data retrieval of XML currently, and proposes a kind of path index technology which have been combined with inverted file to implement retrieval both on context and structure.
本文基于MPI并行计算平台设计并实现了文本案例检索算法的并行化，提高了检索速度。
The parallel computing is realized based on MPI parallel computing platform, and increased speed of retrieval. 5 The implementation of textual case retrieval system.
本文基于MPI并行计算平台设计并实现了文本案例检索算法的并行化，提高了检索速度。
The parallel computing is realized based on MPI parallel computing platform, and increased speed of retrieval. 5 The implementation of textual case retrieval system.
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