Automatic text processing: the transformation, analysis, and retrieval of information by computer
Automatic text processing: the transformation, analysis, and retrieval of information by computer
Overview of the second text retrieval conference (TREC-2)
TREC-2 Proceedings of the second conference on Text retrieval conference
TREC and TIPSTER experiments with INQUERY
TREC-2 Proceedings of the second conference on Text retrieval conference
Query expansion using local and global document analysis
SIGIR '96 Proceedings of the 19th annual international ACM SIGIR conference on Research and development in information retrieval
Managing gigabytes (2nd ed.): compressing and indexing documents and images
Managing gigabytes (2nd ed.): compressing and indexing documents and images
Indexing Techniques for Advanced Database Systems
Indexing Techniques for Advanced Database Systems
Efficient phrase querying with an auxiliary index
SIGIR '02 Proceedings of the 25th annual international ACM SIGIR conference on Research and development in information retrieval
Fast phrase querying with combined indexes
ACM Transactions on Information Systems (TOIS)
A search engine for natural language applications
WWW '05 Proceedings of the 14th international conference on World Wide Web
Out of the Box Phrase Indexing
SPIRE '08 Proceedings of the 15th International Symposium on String Processing and Information Retrieval
Inverted indexes for phrases and strings
Proceedings of the 34th international ACM SIGIR conference on Research and development in Information Retrieval
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Most search systems for querying large document collections---for example, web search engines---are based on well-understood information retrieval principles. These systems are both efficient and effective in finding answers to many user information needs, expressed through informal ranked or structured Boolean queries. Phrase querying and browsing are additional techniques that can augment or replace conventional querying tools. In this paper, we propose optimisations for phrase querying with a nextword index, an efficient structure for phrase-based searching. We show that careful consideration of which search terms are evaluated in a query plan and optimisation of the order of evaluation of the plan can reduce query evaluation costs by more than a factor of five. We conclude that, for phrase querying and browsing with nextword indexes, an ordered query plan should be used for all browsing and querying. Moreover, we show that optimised phrase querying is practical on large text collections.