Search (4 results, page 1 of 1)

0.0065057995 = product of:
  0.013011599 = sum of:
    0.013011599 = product of:
      0.039034795 = sum of:
        0.039034795 = weight(_text_:22 in 2360) [ClassicSimilarity], result of:
          0.039034795 = score(doc=2360,freq=2.0), product of:
            0.16815145 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.048018172 = queryNorm
            0.23214069 = fieldWeight in 2360, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=2360)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Abstract

This article reports the author's recent research in developing a holistic model for various levels of digital library (DL) evaluation in which perceived important criteria from heterogeneous stakeholder groups are organized and presented. To develop such a model, the author applied a three-stage research approach: exploration, confirmation, and verification. During the exploration stage, a literature review was conducted followed by an interview, along with a card sorting technique, to collect important criteria perceived by DL experts. Then the criteria identified were used for developing an online survey during the confirmation stage. Survey respondents (431 in total) from 22 countries rated the importance of the criteria. A holistic DL evaluation model was constructed using statistical techniques. Eventually, the verification stage was devised to test the reliability of the model in the context of searching and evaluating an operational DL. The proposed model fills two lacunae in the DL domain: (a) the lack of a comprehensive and flexible framework to guide and benchmark evaluations, and (b) the uncertainty about what divergence exists among heterogeneous DL stakeholders, including general users.

0.0033821356 = product of:
  0.0067642713 = sum of:
    0.0067642713 = product of:
      0.020292813 = sum of:
        0.020292813 = weight(_text_:12 in 1180) [ClassicSimilarity], result of:
          0.020292813 = score(doc=1180,freq=2.0), product of:
            0.13281173 = queryWeight, product of:
              2.765864 = idf(docFreq=7562, maxDocs=44218)
              0.048018172 = queryNorm
            0.15279384 = fieldWeight in 1180, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.765864 = idf(docFreq=7562, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1180)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Abstract

Searches for specific factual health information constitute a significant part of consumer health information requests, but little is known about how users search for such information. This study attempts to fill this gap by observing users' behavior while using MedlinePlus to search for specific health information. Nineteen students participated in the study, and each performed 12 specific tasks. During the search process, they submitted short queries or complete questions, and they examined less than 1 result per search. Participants rarely reformulated queries; when they did, they tended to make a query more specific or more general, or iterate in different ways. Participants also browsed, primarily relying on the alphabetical list and the anatomical classification, to navigate to specific health topics. Participants overall had a positive experience with MedlinePlus, and the experience was significantly correlated with task difficulty and participants' spatial abilities. The results suggest that, to better support specific item search in the health domain, systems could provide a more "natural" interface to encourage users to ask questions; effective conceptual hierarchies could be implemented to help users reformulate queries; and the search results page should be reconceptualized as a place for accessing answers rather than documents. Moreover, multiple schemas should be provided to help users navigate to a health topic. The results also suggest that users' experience with information systems in general and health-related systems in particular should be evaluated in relation to contextual factors, such as task features and individual differences.

0.0033821356 = product of:
  0.0067642713 = sum of:
    0.0067642713 = product of:
      0.020292813 = sum of:
        0.020292813 = weight(_text_:12 in 1252) [ClassicSimilarity], result of:
          0.020292813 = score(doc=1252,freq=2.0), product of:
            0.13281173 = queryWeight, product of:
              2.765864 = idf(docFreq=7562, maxDocs=44218)
              0.048018172 = queryNorm
            0.15279384 = fieldWeight in 1252, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.765864 = idf(docFreq=7562, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1252)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Date

1. 5.2014 17:24:12

0.0033821356 = product of:
  0.0067642713 = sum of:
    0.0067642713 = product of:
      0.020292813 = sum of:
        0.020292813 = weight(_text_:12 in 3216) [ClassicSimilarity], result of:
          0.020292813 = score(doc=3216,freq=2.0), product of:
            0.13281173 = queryWeight, product of:
              2.765864 = idf(docFreq=7562, maxDocs=44218)
              0.048018172 = queryNorm
            0.15279384 = fieldWeight in 3216, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.765864 = idf(docFreq=7562, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3216)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Source

Journal of the Association for Information Science and Technology. 67(2016) no.12, S.22842-2857