Document (#33174)

Author
Whitney , C.
Schiff, L.
Title
¬The Melvyl Recommender Project : developing library recommendation services
Source
D-Lib magazine. 12(2006) no.12, x S
Year
2006
Abstract
Popular commercial on-line services such as Google, e-Bay, Amazon, and Netflix have evolved quickly over the last decade to help people find what they want, developing information retrieval strategies such as usefully ranked results, spelling correction, and recommender systems. Online library catalogs (OPACs), in contrast, have changed little and are notoriously difficult for patrons to use (University of California Libraries, 2005). Over the past year (June 2005 to the present), the Melvyl Recommender Project (California Digital Library, 2005) has been exploring methods and feasibility of closing the gap between features that library patrons want and have come to expect from information retrieval systems and what libraries are currently equipped to deliver. The project team conducted exploratory work in five topic areas: relevance ranking, auto-correction, use of a text-based discovery system, user interface strategies, and recommending. This article focuses specifically on the recommending portion of the project and potential extensions to that work.
Footnote
Vgl.: http://dlib.ukoln.ac.uk/dlib/december06/whitney/12whitney.html.
Theme
OPAC
Katalogfragen allgemein
Object
Melvyl
Location
USA

Similar documents (content)

  1. Smets, A.; Vannieuwenhuyze, J.; Ballon, P.: Serendipity in the city : user evaluations of urban recommender systems (2022) 0.13
    0.12715387 = sum of:
      0.12715387 = product of:
        0.63576937 = sum of:
          0.015874442 = weight(abstract_txt:work in 458) [ClassicSimilarity], result of:
            0.015874442 = score(doc=458,freq=1.0), product of:
              0.06693841 = queryWeight, product of:
                1.0031102 = boost
                3.7943997 = idf(docFreq=2703, maxDocs=44218)
                0.017586673 = queryNorm
              0.23714998 = fieldWeight in 458, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7943997 = idf(docFreq=2703, maxDocs=44218)
                0.0625 = fieldNorm(doc=458)
          0.02334211 = weight(abstract_txt:what in 458) [ClassicSimilarity], result of:
            0.02334211 = score(doc=458,freq=1.0), product of:
              0.08655719 = queryWeight, product of:
                1.1406766 = boost
                4.314763 = idf(docFreq=1606, maxDocs=44218)
                0.017586673 = queryNorm
              0.2696727 = fieldWeight in 458, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.314763 = idf(docFreq=1606, maxDocs=44218)
                0.0625 = fieldNorm(doc=458)
          0.014344413 = weight(abstract_txt:have in 458) [ClassicSimilarity], result of:
            0.014344413 = score(doc=458,freq=1.0), product of:
              0.07161907 = queryWeight, product of:
                1.2707816 = boost
                3.2046018 = idf(docFreq=4876, maxDocs=44218)
                0.017586673 = queryNorm
              0.20028761 = fieldWeight in 458, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.2046018 = idf(docFreq=4876, maxDocs=44218)
                0.0625 = fieldNorm(doc=458)
          0.1658925 = weight(abstract_txt:recommending in 458) [ClassicSimilarity], result of:
            0.1658925 = score(doc=458,freq=1.0), product of:
              0.31995893 = queryWeight, product of:
                2.193098 = boost
                8.29569 = idf(docFreq=29, maxDocs=44218)
                0.017586673 = queryNorm
              0.5184806 = fieldWeight in 458, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.29569 = idf(docFreq=29, maxDocs=44218)
                0.0625 = fieldNorm(doc=458)
          0.41631588 = weight(abstract_txt:recommender in 458) [ClassicSimilarity], result of:
            0.41631588 = score(doc=458,freq=3.0), product of:
              0.4689736 = queryWeight, product of:
                3.251852 = boost
                8.200379 = idf(docFreq=32, maxDocs=44218)
                0.017586673 = queryNorm
              0.88771707 = fieldWeight in 458, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                8.200379 = idf(docFreq=32, maxDocs=44218)
                0.0625 = fieldNorm(doc=458)
        0.2 = coord(5/25)
    
  2. Low, K.: ABCs of OPACs (1994) 0.12
    0.12355917 = sum of:
      0.12355917 = product of:
        0.6177958 = sum of:
          0.03145448 = weight(abstract_txt:libraries in 1591) [ClassicSimilarity], result of:
            0.03145448 = score(doc=1591,freq=1.0), product of:
              0.06652396 = queryWeight, product of:
                3.782635 = idf(docFreq=2735, maxDocs=44218)
                0.017586673 = queryNorm
              0.47282937 = fieldWeight in 1591, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.782635 = idf(docFreq=2735, maxDocs=44218)
                0.125 = fieldNorm(doc=1591)
          0.060733978 = weight(abstract_txt:services in 1591) [ClassicSimilarity], result of:
            0.060733978 = score(doc=1591,freq=2.0), product of:
              0.08187178 = queryWeight, product of:
                1.1093742 = boost
                4.1963577 = idf(docFreq=1808, maxDocs=44218)
                0.017586673 = queryNorm
              0.74181825 = fieldWeight in 1591, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.1963577 = idf(docFreq=1808, maxDocs=44218)
                0.125 = fieldNorm(doc=1591)
          0.053195562 = weight(abstract_txt:library in 1591) [ClassicSimilarity], result of:
            0.053195562 = score(doc=1591,freq=2.0), product of:
              0.094429284 = queryWeight, product of:
                1.6849201 = boost
                3.1867187 = idf(docFreq=4964, maxDocs=44218)
                0.017586673 = queryNorm
              0.56333756 = fieldWeight in 1591, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.1867187 = idf(docFreq=4964, maxDocs=44218)
                0.125 = fieldNorm(doc=1591)
          0.18449101 = weight(abstract_txt:california in 1591) [ClassicSimilarity], result of:
            0.18449101 = score(doc=1591,freq=1.0), product of:
              0.21635813 = queryWeight, product of:
                1.8034228 = boost
                6.82169 = idf(docFreq=130, maxDocs=44218)
                0.017586673 = queryNorm
              0.85271126 = fieldWeight in 1591, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.82169 = idf(docFreq=130, maxDocs=44218)
                0.125 = fieldNorm(doc=1591)
          0.28792077 = weight(abstract_txt:melvyl in 1591) [ClassicSimilarity], result of:
            0.28792077 = score(doc=1591,freq=1.0), product of:
              0.29109746 = queryWeight, product of:
                2.0918481 = boost
                7.912698 = idf(docFreq=43, maxDocs=44218)
                0.017586673 = queryNorm
              0.9890872 = fieldWeight in 1591, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.912698 = idf(docFreq=43, maxDocs=44218)
                0.125 = fieldNorm(doc=1591)
        0.2 = coord(5/25)
    
  3. Gilbert, S.K.: SGML theory and practice (1989) 0.12
    0.12305425 = sum of:
      0.12305425 = product of:
        0.43947947 = sum of:
          0.023811664 = weight(abstract_txt:work in 5944) [ClassicSimilarity], result of:
            0.023811664 = score(doc=5944,freq=1.0), product of:
              0.06693841 = queryWeight, product of:
                1.0031102 = boost
                3.7943997 = idf(docFreq=2703, maxDocs=44218)
                0.017586673 = queryNorm
              0.355725 = fieldWeight in 5944, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7943997 = idf(docFreq=2703, maxDocs=44218)
                0.09375 = fieldNorm(doc=5944)
          0.032209057 = weight(abstract_txt:services in 5944) [ClassicSimilarity], result of:
            0.032209057 = score(doc=5944,freq=1.0), product of:
              0.08187178 = queryWeight, product of:
                1.1093742 = boost
                4.1963577 = idf(docFreq=1808, maxDocs=44218)
                0.017586673 = queryNorm
              0.39340854 = fieldWeight in 5944, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1963577 = idf(docFreq=1808, maxDocs=44218)
                0.09375 = fieldNorm(doc=5944)
          0.04951609 = weight(abstract_txt:what in 5944) [ClassicSimilarity], result of:
            0.04951609 = score(doc=5944,freq=2.0), product of:
              0.08655719 = queryWeight, product of:
                1.1406766 = boost
                4.314763 = idf(docFreq=1606, maxDocs=44218)
                0.017586673 = queryNorm
              0.57206213 = fieldWeight in 5944, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.314763 = idf(docFreq=1606, maxDocs=44218)
                0.09375 = fieldNorm(doc=5944)
          0.05939104 = weight(abstract_txt:developing in 5944) [ClassicSimilarity], result of:
            0.05939104 = score(doc=5944,freq=1.0), product of:
              0.12311081 = queryWeight, product of:
                1.3603762 = boost
                5.145807 = idf(docFreq=699, maxDocs=44218)
                0.017586673 = queryNorm
              0.48241937 = fieldWeight in 5944, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.145807 = idf(docFreq=699, maxDocs=44218)
                0.09375 = fieldNorm(doc=5944)
          0.028211208 = weight(abstract_txt:library in 5944) [ClassicSimilarity], result of:
            0.028211208 = score(doc=5944,freq=1.0), product of:
              0.094429284 = queryWeight, product of:
                1.6849201 = boost
                3.1867187 = idf(docFreq=4964, maxDocs=44218)
                0.017586673 = queryNorm
              0.29875487 = fieldWeight in 5944, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.1867187 = idf(docFreq=4964, maxDocs=44218)
                0.09375 = fieldNorm(doc=5944)
          0.17317237 = weight(abstract_txt:want in 5944) [ClassicSimilarity], result of:
            0.17317237 = score(doc=5944,freq=2.0), product of:
              0.19943038 = queryWeight, product of:
                1.7314366 = boost
                6.5493927 = idf(docFreq=171, maxDocs=44218)
                0.017586673 = queryNorm
              0.86833495 = fieldWeight in 5944, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.5493927 = idf(docFreq=171, maxDocs=44218)
                0.09375 = fieldNorm(doc=5944)
          0.073168024 = weight(abstract_txt:project in 5944) [ClassicSimilarity], result of:
            0.073168024 = score(doc=5944,freq=1.0), product of:
              0.1782542 = queryWeight, product of:
                2.3149724 = boost
                4.378348 = idf(docFreq=1507, maxDocs=44218)
                0.017586673 = queryNorm
              0.41047013 = fieldWeight in 5944, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.378348 = idf(docFreq=1507, maxDocs=44218)
                0.09375 = fieldNorm(doc=5944)
        0.28 = coord(7/25)
    
  4. Larsgaard, M.L.: Maps on the MELVYL system (1995) 0.12
    0.119008884 = sum of:
      0.119008884 = product of:
        0.7438055 = sum of:
          0.055604193 = weight(abstract_txt:libraries in 3111) [ClassicSimilarity], result of:
            0.055604193 = score(doc=3111,freq=2.0), product of:
              0.06652396 = queryWeight, product of:
                3.782635 = idf(docFreq=2735, maxDocs=44218)
                0.017586673 = queryNorm
              0.8358521 = fieldWeight in 3111, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.782635 = idf(docFreq=2735, maxDocs=44218)
                0.15625 = fieldNorm(doc=3111)
          0.09768661 = weight(abstract_txt:strategies in 3111) [ClassicSimilarity], result of:
            0.09768661 = score(doc=3111,freq=1.0), product of:
              0.12203182 = queryWeight, product of:
                1.3544017 = boost
                5.123207 = idf(docFreq=715, maxDocs=44218)
                0.017586673 = queryNorm
              0.8005011 = fieldWeight in 3111, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.123207 = idf(docFreq=715, maxDocs=44218)
                0.15625 = fieldNorm(doc=3111)
          0.23061377 = weight(abstract_txt:california in 3111) [ClassicSimilarity], result of:
            0.23061377 = score(doc=3111,freq=1.0), product of:
              0.21635813 = queryWeight, product of:
                1.8034228 = boost
                6.82169 = idf(docFreq=130, maxDocs=44218)
                0.017586673 = queryNorm
              1.0658891 = fieldWeight in 3111, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.82169 = idf(docFreq=130, maxDocs=44218)
                0.15625 = fieldNorm(doc=3111)
          0.35990098 = weight(abstract_txt:melvyl in 3111) [ClassicSimilarity], result of:
            0.35990098 = score(doc=3111,freq=1.0), product of:
              0.29109746 = queryWeight, product of:
                2.0918481 = boost
                7.912698 = idf(docFreq=43, maxDocs=44218)
                0.017586673 = queryNorm
              1.236359 = fieldWeight in 3111, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.912698 = idf(docFreq=43, maxDocs=44218)
                0.15625 = fieldNorm(doc=3111)
        0.16 = coord(4/25)
    
  5. Randall, N.B.: Spelling errors in the database : shadow or substance? (1999) 0.12
    0.11544837 = sum of:
      0.11544837 = product of:
        0.48103487 = sum of:
          0.11516001 = weight(abstract_txt:spelling in 106) [ClassicSimilarity], result of:
            0.11516001 = score(doc=106,freq=2.0), product of:
              0.13618132 = queryWeight, product of:
                1.011707 = boost
                7.653836 = idf(docFreq=56, maxDocs=44218)
                0.017586673 = queryNorm
              0.8456373 = fieldWeight in 106, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.653836 = idf(docFreq=56, maxDocs=44218)
                0.078125 = fieldNorm(doc=106)
          0.029177636 = weight(abstract_txt:what in 106) [ClassicSimilarity], result of:
            0.029177636 = score(doc=106,freq=1.0), product of:
              0.08655719 = queryWeight, product of:
                1.1406766 = boost
                4.314763 = idf(docFreq=1606, maxDocs=44218)
                0.017586673 = queryNorm
              0.33709085 = fieldWeight in 106, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.314763 = idf(docFreq=1606, maxDocs=44218)
                0.078125 = fieldNorm(doc=106)
          0.017930515 = weight(abstract_txt:have in 106) [ClassicSimilarity], result of:
            0.017930515 = score(doc=106,freq=1.0), product of:
              0.07161907 = queryWeight, product of:
                1.2707816 = boost
                3.2046018 = idf(docFreq=4876, maxDocs=44218)
                0.017586673 = queryNorm
              0.2503595 = fieldWeight in 106, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.2046018 = idf(docFreq=4876, maxDocs=44218)
                0.078125 = fieldNorm(doc=106)
          0.023509342 = weight(abstract_txt:library in 106) [ClassicSimilarity], result of:
            0.023509342 = score(doc=106,freq=1.0), product of:
              0.094429284 = queryWeight, product of:
                1.6849201 = boost
                3.1867187 = idf(docFreq=4964, maxDocs=44218)
                0.017586673 = queryNorm
              0.2489624 = fieldWeight in 106, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.1867187 = idf(docFreq=4964, maxDocs=44218)
                0.078125 = fieldNorm(doc=106)
          0.115306884 = weight(abstract_txt:california in 106) [ClassicSimilarity], result of:
            0.115306884 = score(doc=106,freq=1.0), product of:
              0.21635813 = queryWeight, product of:
                1.8034228 = boost
                6.82169 = idf(docFreq=130, maxDocs=44218)
                0.017586673 = queryNorm
              0.53294456 = fieldWeight in 106, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.82169 = idf(docFreq=130, maxDocs=44218)
                0.078125 = fieldNorm(doc=106)
          0.17995049 = weight(abstract_txt:melvyl in 106) [ClassicSimilarity], result of:
            0.17995049 = score(doc=106,freq=1.0), product of:
              0.29109746 = queryWeight, product of:
                2.0918481 = boost
                7.912698 = idf(docFreq=43, maxDocs=44218)
                0.017586673 = queryNorm
              0.6181795 = fieldWeight in 106, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.912698 = idf(docFreq=43, maxDocs=44218)
                0.078125 = fieldNorm(doc=106)
        0.24 = coord(6/25)