Application of Spreading Activation Techniques in InformationRetrieval
Artificial Intelligence Review
WWW '03 Proceedings of the 12th international conference on World Wide Web
XRANK: ranked keyword search over XML documents
Proceedings of the 2003 ACM SIGMOD international conference on Management of data
Keyword Searching and Browsing in Databases using BANKS
ICDE '02 Proceedings of the 18th International Conference on Data Engineering
Swoogle: a search and metadata engine for the semantic web
Proceedings of the thirteenth ACM international conference on Information and knowledge management
Bidirectional expansion for keyword search on graph databases
VLDB '05 Proceedings of the 31st international conference on Very large data bases
Effective keyword search in relational databases
Proceedings of the 2006 ACM SIGMOD international conference on Management of data
A Relation-Based Search Engine in Semantic Web
IEEE Transactions on Knowledge and Data Engineering
On understanding and classifying web queries
On understanding and classifying web queries
AquaLog: An ontology-driven question answering system for organizational semantic intranets
Web Semantics: Science, Services and Agents on the World Wide Web
Discover: keyword search in relational databases
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
Efficient IR-style keyword search over relational databases
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
Toward a New Generation of Semantic Web Applications
IEEE Intelligent Systems
Reasoning and identifying relevant matches for XML keyword search
Proceedings of the VLDB Endowment
Web Semantics: Science, Services and Agents on the World Wide Web
Practical and effective IR-style keyword search over semantic web
Information Processing and Management: an International Journal
Top-k Exploration of Query Candidates for Efficient Keyword Search on Graph-Shaped (RDF) Data
ICDE '09 Proceedings of the 2009 IEEE International Conference on Data Engineering
From keywords to semantic queries-Incremental query construction on the semantic web
Web Semantics: Science, Services and Agents on the World Wide Web
DBpedia - A crystallization point for the Web of Data
Web Semantics: Science, Services and Agents on the World Wide Web
The OntoNL framework for natural language interface generation and a domain-specific application
DELOS'07 Proceedings of the 1st international conference on Digital libraries: research and development
Invited paper: Sig.ma: Live views on the Web of Data
Web Semantics: Science, Services and Agents on the World Wide Web
Pythia: compositional meaning construction for ontology-based question answering on the semantic web
NLDB'11 Proceedings of the 16th international conference on Natural language processing and information systems
Introduction to linked data and its lifecycle on the web
RW'11 Proceedings of the 7th international conference on Reasoning web: semantic technologies for the web of data
Searching and browsing Linked Data with SWSE: The Semantic Web Search Engine
Web Semantics: Science, Services and Agents on the World Wide Web
Fuzzy view-based semantic search
ASWC'06 Proceedings of the First Asian conference on The Semantic Web
ESWC'10 Proceedings of the 7th international conference on The Semantic Web: research and Applications - Volume Part II
Template-based question answering over RDF data
Proceedings of the 21st international conference on World Wide Web
LIMES: a time-efficient approach for large-scale link discovery on the web of data
IJCAI'11 Proceedings of the Twenty-Second international joint conference on Artificial Intelligence - Volume Volume Three
EAGLE: efficient active learning of link specifications using genetic programming
ESWC'12 Proceedings of the 9th international conference on The Semantic Web: research and applications
Extracting multilingual natural-language patterns for RDF predicates
EKAW'12 Proceedings of the 18th international conference on Knowledge Engineering and Knowledge Management
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The search for information on the Web of Data is becoming increasingly difficult due to its considerable growth. Especially novice users need to acquire both knowledge about the underlying ontology structure and proficiency in formulating formal queries e.g. SPARQL queries to retrieve information from Linked Data sources. So as to simplify and automate the querying and retrieval of information from such sources, this paper presents an approach for constructing SPARQL queries based on user-supplied keywords. Our approach utilizes a set of predefined basic graph pattern templates for generating adequate interpretations of user queries. This is achieved by obtaining ranked lists of candidate resource identifiers for the supplied keywords and then injecting these identifiers into suitable positions in the graph pattern templates. The main advantages of our approach are that it is completely agnostic of the underlying knowledge base and ontology schema, that it scales to large knowledge bases and is simple to use. We evaluate all 17 possible valid graph pattern templates by measuring their precision and recall on 53 queries against DBpedia. Our results show that 8 of these basic graph pattern templates return results with a precision above 70%. Our approach is implemented as a Web search interface and performs sufficiently fast to provide answers within an acceptable time frame even when used on large knowledge bases.