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arXiv 1905.04037cs.DB
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数据湖中文本文档的元数据管理

Metadata Management for Textual Documents in Data Lakes

Pegdwendé Sawadogo, Tokio Kibata, Jérôme Darmont

摘要:

数据湖已经成为数据仓库的替代品,用于存储,探索和分析大数据。在数据湖中,数据以原始状态存储,没有显式模式。因此,一个有效的元数据系统是必不可少的,以避免数据湖变成所谓的数据沼泽。现有的数据湖元数据管理工作主要集中在结构化和半结构化数据上,对非结构化数据的研究较少。因此,我们在本文中提出了一种方法论的方法来建立和管理一个元数据系统,是特定的文本文件的数据湖。首先,我们列出一个要提取的常用和有意义的元数据清单。然后,我们应用一些特定的技术,从文本挖掘和信息检索领域的提取,存储和重用这些元数据的COREL研究项目,以验证我们的建议。

英文摘要:

Data lakes have emerged as an alternative to data warehouses for the storage, exploration and analysis of big data. In a data lake, data are stored in a raw state and bear no explicit schema. Thence, an efficient metadata system is essential to avoid the data lake turning to a so-called data swamp. Existing works about managing data lake metadata mostly focus on structured and semi-structured data, with little research on unstructured data. Thus, we propose in this paper a methodological approach to build and manage a metadata system that is specific to textual documents in data lakes. First, we make an inventory of usual and meaningful metadata to extract. Then, we apply some specific techniques from the text mining and information retrieval domains to extract, store and reuse these metadata within the COREL research project, in order to validate our proposals.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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