The design and analysis of spatial data structures
The design and analysis of spatial data structures
Information retrieval
Selectivity estimation in spatial databases
SIGMOD '99 Proceedings of the 1999 ACM SIGMOD international conference on Management of data
GlOSS: text-source discovery over the Internet
ACM Transactions on Database Systems (TODS)
Extended Boolean information retrieval
Communications of the ACM
Global optimization of histograms
SIGMOD '01 Proceedings of the 2001 ACM SIGMOD international conference on Management of data
Query-based sampling of text databases
ACM Transactions on Information Systems (TOIS)
X-means: Extending K-means with Efficient Estimation of the Number of Clusters
ICML '00 Proceedings of the Seventeenth International Conference on Machine Learning
Accurate Estimation of the Cost of Spatial Selections
ICDE '00 Proceedings of the 16th International Conference on Data Engineering
Exploring Spatial Datasets with Histograms
ICDE '02 Proceedings of the 18th International Conference on Data Engineering
A Probabilistic Approach to Metasearching with Adaptive Probing
ICDE '04 Proceedings of the 20th International Conference on Data Engineering
Geographic information retrieval (GIR) ranking methods for digital libraries
Proceedings of the 4th ACM/IEEE-CS joint conference on Digital libraries
Geographic information retrieval (GIR): searching where and what
Proceedings of the 27th annual international ACM SIGIR conference on Research and development in information retrieval
Introduction to Data Mining, (First Edition)
Introduction to Data Mining, (First Edition)
Hybrid index structures for location-based web search
Proceedings of the 14th ACM international conference on Information and knowledge management
Efficient query processing in geographic web search engines
Proceedings of the 2006 ACM SIGMOD international conference on Management of data
A to Z GIS: An Illustrated Dictionary of Geographic Information Systems
A to Z GIS: An Illustrated Dictionary of Geographic Information Systems
Processing Spatial-Keyword (SK) Queries in Geographic Information Retrieval (GIR) Systems
SSDBM '07 Proceedings of the 19th International Conference on Scientific and Statistical Database Management
Distributed search over the hidden web: hierarchical database sampling and selection
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
The history of histograms (abridged)
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
SSTD'13 Proceedings of the 13th international conference on Advances in Spatial and Temporal Databases
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In this paper, we consider the problem of discovering GIS data sources on the web. Source discovery queries for GIS data are specified using keywords and a region of interest. A source is considered relevant if it contains data that matches the keywords in the specified region. Existing techniques simply rely on textual metadata accompanying such datasets to compute relevance to user-queries. Such approaches result in poor search results, often missing the most relevant sources on the web. We address this problem by developing more meaningful summaries of GIS datasets that preserve the spatial distribution of keywords. We conduct experiments showing the effectiveness of proposed summarization techniques by significantly improving the quality of query results over baseline approaches, while guaranteeing scalability and high performance.