scispace - formally typeset
Search or ask a question
Topic

Metadata repository

About: Metadata repository is a research topic. Over the lifetime, 5841 publications have been published within this topic receiving 121778 citations.


Papers
More filters
Journal ArticleDOI
TL;DR: This paper introduces and examines an authoring tool called as “TreeLom” for producing the metadata compatible to IEEE LOM draft standard.
Abstract: This paper introduces and examines an authoring tool called as “TreeLom” for producing the metadata compatible to IEEE LOM draft standard. TreeLom, has been developed with MS .NET framework technology, is an application of XML binding of the LOM. Its tree view editing interface provides rapid data input in building learning object metadata.

29 citations

Patent
Yasuhiko Kanemasa1
25 Jun 2004
TL;DR: In this article, the integration metadata defines a format of a tagged document used for outputting a result of a query for data reference to a plurality of databases, a relation between each element in the tagged document and each elements in each database.
Abstract: When referring to database integration, integration metadata is stored. The integration metadata defines a format of a tagged document used for outputting a result of a query for data reference to a plurality of databases, a relation between each element in the tagged document and each element in each database, and a relation between the elements in each database. When a query is received in a format of the tagged document, the integration metadata is referred to and queries are made to various databases to acquire data. Finally a result of the queries is generated in the format of the tagged document.

28 citations

Journal IssueDOI
TL;DR: It is shown that link anchor text, which can be regarded as metadata created by others, is much more effective in identifying best answers to queries than other textual evidence, and query-independent evidence such as link counts and uniform resource locator length, unlike subject and description metadata, can substantially improve baseline performance.
Abstract: It has been claimed that topic metadata can be used to improve the accuracy of text searches. Here, we test this claim by examining the contribution of metadata to effective searching within Web sites published by a university with a strong commitment to and substantial investment in metadata. The authors use four sets of queries, a total of 463, extracted from the university's official query logs and from the university's site map. The results are clear: The available metadata is of little value in ranking answers to those queries. A follow-up experiment with the Web sites published in a particular government jurisdiction confirms that this conclusion is not specific to the particular university. Examination of the metadata present at the university reveals that, in addition to implementation deficiencies, there are inherent problems in trying to use subject and description metadata to enhance the searchability of Web sites. Our experiments show that link anchor text, which can be regarded as metadata created by others, is much more effective in identifying best answers to queries than other textual evidence. Furthermore, query-independent evidence such as link counts and uniform resource locator (URL) length, unlike subject and description metadata, can substantially improve baseline performance. © 2007 Wiley Periodicals, Inc.

28 citations

Proceedings ArticleDOI
06 May 2013
TL;DR: This paper presents a ring-based metadata management scheme, called Dynamic Ring Online Partitioning (DROP), that can preserve metadata locality using locality-preserving hashing, as well as dynamically distribute metadata among metadata server cluster to keep load balancing.
Abstract: Efficient and scalable distributed metadata management is critically important to overall system performance in large-scale distributed storage systems, especially in the EB era. Traditional state-of-the-art distributed metadata management schemes include hash-based mapping and subtree partitioning. The former evenly distributes workload among metadata servers, but it eliminates all hierarchical locality of metadata. It cannot efficiently handle some operations, e.g., renaming or moving a directory that requires metadata to be migrated among metadata servers. The latter does not uniformly distribute workload among metadata servers, and metadata need to be migrated to keep the load balanced roughly. In this paper, we present a ring-based metadata management scheme, called Dynamic Ring Online Partitioning (DROP). It can preserve metadata locality using locality-preserving hashing, as well as dynamically distribute metadata among metadata server cluster to keep load balancing. By conducting performance evaluation, experimental results demonstrate the effectiveness and scalability of DROP.

28 citations

Journal ArticleDOI
16 May 2000
TL;DR: The ESPRIT Project DWQ (Foundations of Data Warehouse Quality) aimed at improving the quality of DW design and operation through systematic enrichment of the semantic foundations of data warehousing by integrating Logic-based knowledge representation and reasoning techniques and quantitative optimization techniques.
Abstract: The ESPRIT Project DWQ (Foundations of Data Warehouse Quality) aimed at improving the quality of DW design and operation through systematic enrichment of the semantic foundations of data warehousing. Logic-based knowledge representation and reasoning techniques were developed to control accuracy, consistency, and completeness via advanced conceptual modeling techniques for source integration, data reconciliation, and multi-dimensional aggregation. This is complemented by quantitative optimization techniques for view materialization, optimizing timeliness and responsiveness without losing the semantic advantages from the conceptual approach. At the operational level, query rewriting and materialization refreshment algorithms exploit the knowledge developed at design time. The demonstration shows the interplay of these tools under a shared metadata repository, based on an example extracted from an application at Telecom Italia.

28 citations


Network Information
Related Topics (5)
Information system
107.5K papers, 1.8M citations
85% related
User interface
85.4K papers, 1.7M citations
81% related
Software
130.5K papers, 2M citations
80% related
Mobile computing
51.3K papers, 1M citations
80% related
Support vector machine
73.6K papers, 1.7M citations
80% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202332
202279
202113
202011
201921
201824