Expanding user’s query with tag-neighbors for effective medical information retrieval

Frederico Durao, Karunakar Reddy Bayyapu, Guandong Xu, Peter Dolog, Ricardo Lage

    Research output: Contribution to journalJournal articleResearchpeer-review


    Medical information is a natural human demand. Existing search engines on the Web often are unable to handle medical search well because they do not consider its special requirements. Often a medical information searcher is uncertain about his exact questions and unfamiliar with medical terminology. Under-specified queries often lead to undesirable search results that do not contain the information needed. To overcome the limitations of under-specified queries, we utilize tags to enhance information retrieval capabilities by expanding users’ original queries with context-relevant information. We compute a set of significant tag neighbor candidates based on the neighbor frequency and weight, and utilize the qualified tag neighbors to expand an entry query. The proposed approach is evaluated by using MedWorm medical article collection and results show considerable precision improvements over state-of-the-art approaches.
    Original languageEnglish
    JournalMultimedia Tools and Applications
    Issue number2
    Pages (from-to)905-929
    Number of pages25
    Publication statusPublished - 2014


    • Medical information retrieval
    • Query expansion
    • Tagging
    • Health information system


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