Searching for authors named Vagelis Hristidis – sorted by Relevance.
21 documents found, showing 1 through 10.
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DISCOVER: Keyword Search in Relational Databases
- …DISCOVER operates on relational databases and facilitates information discovery on them by allowing its user to issue keyword queries without any knowledge of the database schema or of SQL.…
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Algorithms and Applications for answering Ranked Queries using Ranked Views
- …Ranked queries return the top objects of a database according to a preference function. We present and evaluate (experimentally and theoretically) a core algorithm that answers ranked queries in an e#cient pipelined manner using materialized ranked views. We use and extend the core algorithm in the …
- Cited by 22 (1 self) – Add To MetaCart
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DISCOVER: Keyword Search in Relational Databases
- …DISCOVER operates on relational databases and facilitates information discovery on them by allowing its user to issue keyword queries without any knowledge of the database schema or of SQL.…
- Cited by 81 (3 self) – Add To MetaCart
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Beyond Single-Page Web Search Results
- …Abstract—Given a user keyword query, current Web search engines return a list of individual Web pages ranked by their “goodness” with respect to the query. Thus, the basic unit for search and retrieval is an individual page, even though information on a topic is often spread across multiple pages. T…
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Efficient native XML storage
- …XML has emerged as one of the popular data-representation formats for information storage and exchange. XML data today range from representing small files to encapsulating gigabytes of information. Large XML databases must be stored on mass storage devices for both persistence as well as costefficie…
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BioNav: Effective Navigation on Query Results of Biomedical Databases
- …Abstract — Search queries on biomedical databases like PubMed often return a large number of results, only a small subset of which is relevant to the user. Ranking and categorization, which can also be combined, have been proposed to alleviate this information overload problem. Results categorizatio…
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Standing Out in a Crowd: Selecting Attributes for Maximum Visibility
- …Abstract — In recent years, there has been significant interest in development of ranking functions and efficient top-k retrieval algorithms to help users in ad-hoc search and retrieval in databases (e.g., buyers searching for products in a catalog). In this paper we focus on a novel and complementa…
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Explaining and reformulating authority flow queries
- …Abstract — Authority flow is an effective ranking mechanism for answering queries on a broad class of data. Systems have been developed to apply this principle on the Web (PageRank and topic sensitive PageRank), bibliographic databases (ObjectRank), and biological databases (Hubs of Knowledge projec…
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ObjectRank: Authority-Based Keyword Search in Databases
- …The ObjectRank system applies authority-based ranking to keyword search in databases modeled as labeled graphs. Conceptually, authority originates at the nodes (objects) containing the keywords and flows to objects according to their semantic connections. Each node is ranked according to its authori…
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Keyword proximity search in XML trees
- …Abstract—Recent works have shown the benefits of keyword proximity search in querying XML documents in addition to text documents. For example, given query keywords over Shakespeare’s plays in XML, the user might be interested in knowing how the keywords cooccur. In this paper, we focus on XML trees…
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