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Interaction

Interaction. LBSC 734 Module 4 Doug Oard. Agenda. Where interaction fits Query formulation Selection part 1: Snippets Selection part 2: Result sets Examination. A Traditional Concordance. Web Search Engine Snippets: “ KeyWord In Context” (KWIC).

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Interaction

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  1. Interaction LBSC 734 Module 4 Doug Oard

  2. Agenda • Where interaction fits • Query formulation • Selection part 1: Snippets • Selection part 2: Result sets • Examination

  3. A Traditional Concordance

  4. Web Search Engine Snippets:“KeyWord In Context” (KWIC) Query: University of Maryland College Park

  5. Summarization

  6. Indicative vs. Informative • Indicative abstracts support selection • They describe the contents of a document • Informative abstracts support understanding • They summarize the contents of a document • Applies to any information presentation • Presented for indicative or informative purposes

  7. Selection/Examination Tasks • “Indicative” tasks • Recognizing what you are looking for • Determining that no answer exists in a source • Probing to refine mental models of system operation • “Informative” tasks • Vocabulary acquisition • Concept learning • Information use

  8. Extraction-Based Summarization • Robust technique for making disfluent summaries • Four broad types: • Query-biased vs. generic • Term-oriented vs. sentence-oriented • Combine evidence for selection: • Salience: similarity to the query • Specificity: IDF or chi-squared, … • Emphasis: title, first sentence, … Jimmy Lin, et al..INTERACT 2003.

  9. Agenda • Where interaction fits • Query formulation • Selection part 1: Snippets • Selection part 2: Result sets • Examination

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