Efficient crawling through URL ordering
WWW7 Proceedings of the seventh international conference on World Wide Web 7
The shark-search algorithm. An application: tailored Web site mapping
WWW7 Proceedings of the seventh international conference on World Wide Web 7
Focused crawling: a new approach to topic-specific Web resource discovery
WWW '99 Proceedings of the eighth international conference on World Wide Web
Organizing topic-specific web information
HYPERTEXT '00 Proceedings of the eleventh ACM on Hypertext and hypermedia
Evaluating topic-driven web crawlers
Proceedings of the 24th annual international ACM SIGIR conference on Research and development in information retrieval
On the design of a learning crawler for topical resource discovery
ACM Transactions on Information Systems (TOIS)
How knowledge workers use the web
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Cumulated gain-based evaluation of IR techniques
ACM Transactions on Information Systems (TOIS)
Measuring Search Engine Quality
Information Retrieval
A machine learning approach to building domain-specific search engines
IJCAI'99 Proceedings of the 16th international joint conference on Artificial intelligence - Volume 2
Focused crawling for both topical relevance and quality of medical information
Proceedings of the 14th ACM international conference on Information and knowledge management
Quality-Oriented Search for Depression Portals
ECIR '09 Proceedings of the 31th European Conference on IR Research on Advances in Information Retrieval
Reliability prediction of webpages in the medical domain
ECIR'12 Proceedings of the 34th European conference on Advances in Information Retrieval
Medical information retrieval: an instance of domain-specific search
SIGIR '12 Proceedings of the 35th international ACM SIGIR conference on Research and development in information retrieval
Toward a model of domain-specific search
Proceedings of the 10th Conference on Open Research Areas in Information Retrieval
NLP-based faceted search: Experience in the development of a science and technology search engine
Expert Systems with Applications: An International Journal
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When searching for health information, results quality can be judged against available scientific evidence: Do search engines return advice consistent with evidence based medicine? We compared the performance of domain-specific health and depression search engines against a general-purpose engine (Google) on both relevance of results and quality of advice. Over 101 queries, to which the term `depression' was added if not already present, Google returned more relevant results than those of the domain-specific engines. However, over the 50 treatment-related queries, Google returned 70 pages recommending for or against a well studied treatment, of which 19 strongly disagreed with the scientific evidence. A domain-specific index of 4 sites selected by domain experts was only wrong in 5 of 50 recommendations. Analysis suggests a tension between relevance and quality. Indexing more pages can give a greater number of relevant results, but selective inclusion can give better quality.