کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
396575 670398 2011 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An effective 3-in-1 keyword search method over heterogeneous data sources
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر هوش مصنوعی
پیش نمایش صفحه اول مقاله
An effective 3-in-1 keyword search method over heterogeneous data sources
چکیده انگلیسی

Conventional keyword search engines are restricted to a given data model and cannot easily adapt to unstructured, semi-structured or structured data. In this paper, we propose an efficient and adaptive keyword search method, called EASE, for indexing and querying large collections of heterogeneous data. To achieve high efficiency in processing keyword queries, we first model unstructured, semi-structured and structured data as graphs, and then summarize the graphs and construct graph indices instead of using traditional inverted indices. We propose an extended inverted index to facilitate keyword-based search, and present a novel ranking mechanism for enhancing search effectiveness. We have conducted an extensive experimental study using real datasets, and the results show that EASE achieves both high search efficiency and high accuracy, and outperforms the existing approaches significantly.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Information Systems - Volume 36, Issue 2, April 2011, Pages 248–266
نویسندگان
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