Document (#33190)

Author
Hammond, T.
Hannay, T.
Lund, B.
Scott, J.
Title
Social bookmarking tools (I) : a general review
Source
D-Lib magazine. 11(2005) no.4, x S
Year
2005
Abstract
Because, to paraphrase a pop music lyric from a certain rock and roll band of yesterday, "the Web is old, the Web is new, the Web is all, the Web is you", it seems like we might have to face up to some of these stark realities. With the introduction of new social software applications such as blogs, wikis, newsfeeds, social networks, and bookmarking tools (the subject of this paper), the claim that Shelley Powers makes in a Burningbird blog entry seems apposite: "This is the user's web now, which means it's my web and I can make the rules." Reinvention is revolution - it brings us always back to beginnings. We are here going to remind you of hyperlinks in all their glory, sell you on the idea of bookmarking hyperlinks, point you at other folks who are doing the same, and tell you why this is a good thing. Just as long as those hyperlinks (or let's call them plain old links) are managed, tagged, commented upon, and published onto the Web, they represent a user's own personal library placed on public record, which - when aggregated with other personal libraries - allows for rich, social networking opportunities. Why spill any ink (digital or not) in rewriting what someone else has already written about instead of just pointing at the original story and adding the merest of titles, descriptions and tags for future reference? More importantly, why not make these personal 'link playlists' available to oneself and to others from whatever browser or computer one happens to be using at the time? This paper reviews some current initiatives, as of early 2005, in providing public link management applications on the Web - utilities that are often referred to under the general moniker of 'social bookmarking tools'. There are a couple of things going on here: 1) server-side software aimed specifically at managing links with, crucially, a strong, social networking flavour, and 2) an unabashedly open and unstructured approach to tagging, or user classification, of those links.
A number of such utilities are presented here, together with an emergent new class of tools that caters more to the academic communities and that stores not only user-supplied tags, but also structured citation metadata terms wherever it is possible to glean this information from service providers. This provision of rich, structured metadata means that the user is provided with an accurate third-party identification of a document, which could be used to retrieve that document, but is also free to search on user-supplied terms so that documents of interest (or rather, references to documents) can be made discoverable and aggregated with other similar descriptions either recorded by the user or by other users. Matt Biddulph in an XML.com article last year, in which he reviews one of the better known social bookmarking tools, del.icio.us, declares that the "del.icio.us-space has three major axes: users, tags, and URLs". We fully support that assessment but choose to present this deconstruction in a reverse order. This paper thus first recaps a brief history of bookmarks, then discusses the current interest in tagging, moves on to look at certain social issues, and finally considers some of the feature sets offered by the new bookmarking tools. A general review of a number of common social bookmarking tools is presented in the annex. A companion paper describes a case study in more detail: the tool that Nature Publishing Group has made available to the scientific community as an experimental entrée into this field - Connotea; our reasons for endeavouring to provide such a utility; and experiences gained and lessons learned.
Footnote
Vgl.: http://dlib.ukoln.ac.uk/dlib/april05/hammond/04hammond.html.
Theme
Social tagging
Object
del.icio.us
Connotea

Similar documents (author)

  1. Hammond, T.; Hannay, T.; Lund, B.; Flack, M.: Social bookmarking tools (II) : a case study - Connotea (2005) 2.21
    2.2148042 = sum of:
      2.2148042 = product of:
        3.322206 = sum of:
          1.53332 = weight(author_txt:lund in 3190) [ClassicSimilarity], result of:
            1.53332 = score(doc=3190,freq=1.0), product of:
              0.5724115 = queryWeight, product of:
                1.0496505 = boost
                8.571848 = idf(docFreq=21, maxDocs=42740)
                0.06361934 = queryNorm
              2.6787024 = fieldWeight in 3190, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.571848 = idf(docFreq=21, maxDocs=42740)
                0.3125 = fieldNorm(doc=3190)
          1.788886 = weight(author_txt:hammond in 3190) [ClassicSimilarity], result of:
            1.788886 = score(doc=3190,freq=1.0), product of:
              0.6343684 = queryWeight, product of:
                1.1049976 = boost
                9.023833 = idf(docFreq=13, maxDocs=42740)
                0.06361934 = queryNorm
              2.819948 = fieldWeight in 3190, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.023833 = idf(docFreq=13, maxDocs=42740)
                0.3125 = fieldNorm(doc=3190)
        0.6666667 = coord(2/3)
    
  2. Hammond, N.: Tailoring hypertext for the learner (1991) 1.19
    1.1925907 = sum of:
      1.1925907 = product of:
        3.577772 = sum of:
          3.577772 = weight(author_txt:hammond in 2930) [ClassicSimilarity], result of:
            3.577772 = score(doc=2930,freq=1.0), product of:
              0.6343684 = queryWeight, product of:
                1.1049976 = boost
                9.023833 = idf(docFreq=13, maxDocs=42740)
                0.06361934 = queryNorm
              5.639896 = fieldWeight in 2930, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.023833 = idf(docFreq=13, maxDocs=42740)
                0.625 = fieldNorm(doc=2930)
        0.33333334 = coord(1/3)
    
  3. Lund, G.O.: Kartlegging av Dewey - brukere : Norge (1980) 1.02
    1.0222133 = sum of:
      1.0222133 = product of:
        3.06664 = sum of:
          3.06664 = weight(author_txt:lund in 2563) [ClassicSimilarity], result of:
            3.06664 = score(doc=2563,freq=1.0), product of:
              0.5724115 = queryWeight, product of:
                1.0496505 = boost
                8.571848 = idf(docFreq=21, maxDocs=42740)
                0.06361934 = queryNorm
              5.3574047 = fieldWeight in 2563, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.571848 = idf(docFreq=21, maxDocs=42740)
                0.625 = fieldNorm(doc=2563)
        0.33333334 = coord(1/3)
    
  4. Lund, H.: Electronic documents and authorship : who did it? (1994) 1.02
    1.0222133 = sum of:
      1.0222133 = product of:
        3.06664 = sum of:
          3.06664 = weight(author_txt:lund in 474) [ClassicSimilarity], result of:
            3.06664 = score(doc=474,freq=1.0), product of:
              0.5724115 = queryWeight, product of:
                1.0496505 = boost
                8.571848 = idf(docFreq=21, maxDocs=42740)
                0.06361934 = queryNorm
              5.3574047 = fieldWeight in 474, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.571848 = idf(docFreq=21, maxDocs=42740)
                0.625 = fieldNorm(doc=474)
        0.33333334 = coord(1/3)
    
  5. Lund, J.J.: ¬The cataloging process in the university library : a proposal for reorganization (1942) 1.02
    1.0222133 = sum of:
      1.0222133 = product of:
        3.06664 = sum of:
          3.06664 = weight(author_txt:lund in 6272) [ClassicSimilarity], result of:
            3.06664 = score(doc=6272,freq=1.0), product of:
              0.5724115 = queryWeight, product of:
                1.0496505 = boost
                8.571848 = idf(docFreq=21, maxDocs=42740)
                0.06361934 = queryNorm
              5.3574047 = fieldWeight in 6272, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.571848 = idf(docFreq=21, maxDocs=42740)
                0.625 = fieldNorm(doc=6272)
        0.33333334 = coord(1/3)
    

Similar documents (content)

  1. Noruzi, A.: Folksonomies : (un)controlled vocabulary? (2006) 0.41
    0.41353393 = sum of:
      0.41353393 = product of:
        1.0338348 = sum of:
          0.11737095 = weight(abstract_txt:tagging in 2405) [ClassicSimilarity], result of:
            0.11737095 = score(doc=2405,freq=4.0), product of:
              0.11893602 = queryWeight, product of:
                1.0580693 = boost
                6.315783 = idf(docFreq=209, maxDocs=42740)
                0.017798034 = queryNorm
              0.9868411 = fieldWeight in 2405, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                6.315783 = idf(docFreq=209, maxDocs=42740)
                0.078125 = fieldNorm(doc=2405)
          0.020578261 = weight(abstract_txt:other in 2405) [ClassicSimilarity], result of:
            0.020578261 = score(doc=2405,freq=1.0), product of:
              0.074514724 = queryWeight, product of:
                1.1843866 = boost
                3.5348954 = idf(docFreq=3387, maxDocs=42740)
                0.017798034 = queryNorm
              0.2761637 = fieldWeight in 2405, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.5348954 = idf(docFreq=3387, maxDocs=42740)
                0.078125 = fieldNorm(doc=2405)
          0.015770918 = weight(abstract_txt:with in 2405) [ClassicSimilarity], result of:
            0.015770918 = score(doc=2405,freq=2.0), product of:
              0.056697167 = queryWeight, product of:
                1.2653153 = boost
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.017798034 = queryNorm
              0.2781606 = fieldWeight in 2405, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.078125 = fieldNorm(doc=2405)
          0.17541972 = weight(abstract_txt:del.icio.us in 2405) [ClassicSimilarity], result of:
            0.17541972 = score(doc=2405,freq=1.0), product of:
              0.24680004 = queryWeight, product of:
                1.5241582 = boost
                9.097941 = idf(docFreq=12, maxDocs=42740)
                0.017798034 = queryNorm
              0.7107767 = fieldWeight in 2405, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.097941 = idf(docFreq=12, maxDocs=42740)
                0.078125 = fieldNorm(doc=2405)
          0.029017413 = weight(abstract_txt:user in 2405) [ClassicSimilarity], result of:
            0.029017413 = score(doc=2405,freq=1.0), product of:
              0.10093585 = queryWeight, product of:
                1.5411686 = boost
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.017798034 = queryNorm
              0.28748372 = fieldWeight in 2405, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.078125 = fieldNorm(doc=2405)
          0.08842895 = weight(abstract_txt:tags in 2405) [ClassicSimilarity], result of:
            0.08842895 = score(doc=2405,freq=1.0), product of:
              0.17894506 = queryWeight, product of:
                1.5895088 = boost
                6.3253527 = idf(docFreq=207, maxDocs=42740)
                0.017798034 = queryNorm
              0.49416816 = fieldWeight in 2405, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.3253527 = idf(docFreq=207, maxDocs=42740)
                0.078125 = fieldNorm(doc=2405)
          0.015283746 = weight(abstract_txt:this in 2405) [ClassicSimilarity], result of:
            0.015283746 = score(doc=2405,freq=1.0), product of:
              0.0800787 = queryWeight, product of:
                1.841714 = boost
                2.442996 = idf(docFreq=10095, maxDocs=42740)
                0.017798034 = queryNorm
              0.19085906 = fieldWeight in 2405, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.442996 = idf(docFreq=10095, maxDocs=42740)
                0.078125 = fieldNorm(doc=2405)
          0.015993733 = weight(abstract_txt:that in 2405) [ClassicSimilarity], result of:
            0.015993733 = score(doc=2405,freq=1.0), product of:
              0.085490175 = queryWeight, product of:
                2.0058596 = boost
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.017798034 = queryNorm
              0.18708271 = fieldWeight in 2405, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.078125 = fieldNorm(doc=2405)
          0.116799094 = weight(abstract_txt:social in 2405) [ClassicSimilarity], result of:
            0.116799094 = score(doc=2405,freq=2.0), product of:
              0.24659266 = queryWeight, product of:
                3.2318692 = boost
                4.2870083 = idf(docFreq=1596, maxDocs=42740)
                0.017798034 = queryNorm
              0.47365195 = fieldWeight in 2405, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.2870083 = idf(docFreq=1596, maxDocs=42740)
                0.078125 = fieldNorm(doc=2405)
          0.43917206 = weight(abstract_txt:bookmarking in 2405) [ClassicSimilarity], result of:
            0.43917206 = score(doc=2405,freq=1.0), product of:
              0.69088453 = queryWeight, product of:
                4.770833 = boost
                8.13653 = idf(docFreq=33, maxDocs=42740)
                0.017798034 = queryNorm
              0.6356664 = fieldWeight in 2405, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.13653 = idf(docFreq=33, maxDocs=42740)
                0.078125 = fieldNorm(doc=2405)
        0.4 = coord(10/25)
    
  2. Kipp, M.E.I.; Campbell, D.G.: Searching with tags : do tags help users find things? (2010) 0.41
    0.41252694 = sum of:
      0.41252694 = product of:
        0.9375612 = sum of:
          0.01646261 = weight(abstract_txt:other in 1065) [ClassicSimilarity], result of:
            0.01646261 = score(doc=1065,freq=1.0), product of:
              0.074514724 = queryWeight, product of:
                1.1843866 = boost
                3.5348954 = idf(docFreq=3387, maxDocs=42740)
                0.017798034 = queryNorm
              0.22093096 = fieldWeight in 1065, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.5348954 = idf(docFreq=3387, maxDocs=42740)
                0.0625 = fieldNorm(doc=1065)
          0.07385599 = weight(abstract_txt:supplied in 1065) [ClassicSimilarity], result of:
            0.07385599 = score(doc=1065,freq=1.0), product of:
              0.16087557 = queryWeight, product of:
                1.2305591 = boost
                7.3454022 = idf(docFreq=74, maxDocs=42740)
                0.017798034 = queryNorm
              0.45908764 = fieldWeight in 1065, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.3454022 = idf(docFreq=74, maxDocs=42740)
                0.0625 = fieldNorm(doc=1065)
          0.008921378 = weight(abstract_txt:with in 1065) [ClassicSimilarity], result of:
            0.008921378 = score(doc=1065,freq=1.0), product of:
              0.056697167 = queryWeight, product of:
                1.2653153 = boost
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.017798034 = queryNorm
              0.15735139 = fieldWeight in 1065, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.0625 = fieldNorm(doc=1065)
          0.039913796 = weight(abstract_txt:links in 1065) [ClassicSimilarity], result of:
            0.039913796 = score(doc=1065,freq=1.0), product of:
              0.12218337 = queryWeight, product of:
                1.3134366 = boost
                5.2267404 = idf(docFreq=623, maxDocs=42740)
                0.017798034 = queryNorm
              0.32667127 = fieldWeight in 1065, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.2267404 = idf(docFreq=623, maxDocs=42740)
                0.0625 = fieldNorm(doc=1065)
          0.032829456 = weight(abstract_txt:user in 1065) [ClassicSimilarity], result of:
            0.032829456 = score(doc=1065,freq=2.0), product of:
              0.10093585 = queryWeight, product of:
                1.5411686 = boost
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.017798034 = queryNorm
              0.32525072 = fieldWeight in 1065, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.0625 = fieldNorm(doc=1065)
          0.14148633 = weight(abstract_txt:tags in 1065) [ClassicSimilarity], result of:
            0.14148633 = score(doc=1065,freq=4.0), product of:
              0.17894506 = queryWeight, product of:
                1.5895088 = boost
                6.3253527 = idf(docFreq=207, maxDocs=42740)
                0.017798034 = queryNorm
              0.7906691 = fieldWeight in 1065, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                6.3253527 = idf(docFreq=207, maxDocs=42740)
                0.0625 = fieldNorm(doc=1065)
          0.017291585 = weight(abstract_txt:this in 1065) [ClassicSimilarity], result of:
            0.017291585 = score(doc=1065,freq=2.0), product of:
              0.0800787 = queryWeight, product of:
                1.841714 = boost
                2.442996 = idf(docFreq=10095, maxDocs=42740)
                0.017798034 = queryNorm
              0.21593238 = fieldWeight in 1065, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.442996 = idf(docFreq=10095, maxDocs=42740)
                0.0625 = fieldNorm(doc=1065)
          0.11886156 = weight(abstract_txt:hyperlinks in 1065) [ClassicSimilarity], result of:
            0.11886156 = score(doc=1065,freq=1.0), product of:
              0.25290516 = queryWeight, product of:
                1.8896523 = boost
                7.519756 = idf(docFreq=62, maxDocs=42740)
                0.017798034 = queryNorm
              0.46998474 = fieldWeight in 1065, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.519756 = idf(docFreq=62, maxDocs=42740)
                0.0625 = fieldNorm(doc=1065)
          0.022161566 = weight(abstract_txt:that in 1065) [ClassicSimilarity], result of:
            0.022161566 = score(doc=1065,freq=3.0), product of:
              0.085490175 = queryWeight, product of:
                2.0058596 = boost
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.017798034 = queryNorm
              0.2592294 = fieldWeight in 1065, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.0625 = fieldNorm(doc=1065)
          0.11443927 = weight(abstract_txt:social in 1065) [ClassicSimilarity], result of:
            0.11443927 = score(doc=1065,freq=3.0), product of:
              0.24659266 = queryWeight, product of:
                3.2318692 = boost
                4.2870083 = idf(docFreq=1596, maxDocs=42740)
                0.017798034 = queryNorm
              0.46408224 = fieldWeight in 1065, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.2870083 = idf(docFreq=1596, maxDocs=42740)
                0.0625 = fieldNorm(doc=1065)
          0.35133767 = weight(abstract_txt:bookmarking in 1065) [ClassicSimilarity], result of:
            0.35133767 = score(doc=1065,freq=1.0), product of:
              0.69088453 = queryWeight, product of:
                4.770833 = boost
                8.13653 = idf(docFreq=33, maxDocs=42740)
                0.017798034 = queryNorm
              0.5085331 = fieldWeight in 1065, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.13653 = idf(docFreq=33, maxDocs=42740)
                0.0625 = fieldNorm(doc=1065)
        0.44 = coord(11/25)
    
  3. Warr, W.A.: Social software : fun and games, or business tools? (2009) 0.32
    0.3230855 = sum of:
      0.3230855 = product of:
        1.0096421 = sum of:
          0.09436582 = weight(abstract_txt:networking in 664) [ClassicSimilarity], result of:
            0.09436582 = score(doc=664,freq=2.0), product of:
              0.11473747 = queryWeight, product of:
                1.0392262 = boost
                6.2033052 = idf(docFreq=234, maxDocs=42740)
                0.017798034 = queryNorm
              0.82244986 = fieldWeight in 664, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.2033052 = idf(docFreq=234, maxDocs=42740)
                0.09375 = fieldNorm(doc=664)
          0.02391902 = weight(abstract_txt:paper in 664) [ClassicSimilarity], result of:
            0.02391902 = score(doc=664,freq=1.0), product of:
              0.07294761 = queryWeight, product of:
                1.171866 = boost
                3.497527 = idf(docFreq=3516, maxDocs=42740)
                0.017798034 = queryNorm
              0.32789314 = fieldWeight in 664, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.497527 = idf(docFreq=3516, maxDocs=42740)
                0.09375 = fieldNorm(doc=664)
          0.101794876 = weight(abstract_txt:going in 664) [ClassicSimilarity], result of:
            0.101794876 = score(doc=664,freq=1.0), product of:
              0.15205105 = queryWeight, product of:
                1.1963332 = boost
                7.141102 = idf(docFreq=91, maxDocs=42740)
                0.017798034 = queryNorm
              0.6694783 = fieldWeight in 664, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.141102 = idf(docFreq=91, maxDocs=42740)
                0.09375 = fieldNorm(doc=664)
          0.013382068 = weight(abstract_txt:with in 664) [ClassicSimilarity], result of:
            0.013382068 = score(doc=664,freq=1.0), product of:
              0.056697167 = queryWeight, product of:
                1.2653153 = boost
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.017798034 = queryNorm
              0.23602709 = fieldWeight in 664, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.09375 = fieldNorm(doc=664)
          0.031766668 = weight(abstract_txt:this in 664) [ClassicSimilarity], result of:
            0.031766668 = score(doc=664,freq=3.0), product of:
              0.0800787 = queryWeight, product of:
                1.841714 = boost
                2.442996 = idf(docFreq=10095, maxDocs=42740)
                0.017798034 = queryNorm
              0.3966931 = fieldWeight in 664, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.442996 = idf(docFreq=10095, maxDocs=42740)
                0.09375 = fieldNorm(doc=664)
          0.01919248 = weight(abstract_txt:that in 664) [ClassicSimilarity], result of:
            0.01919248 = score(doc=664,freq=1.0), product of:
              0.085490175 = queryWeight, product of:
                2.0058596 = boost
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.017798034 = queryNorm
              0.22449924 = fieldWeight in 664, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.09375 = fieldNorm(doc=664)
          0.19821464 = weight(abstract_txt:social in 664) [ClassicSimilarity], result of:
            0.19821464 = score(doc=664,freq=4.0), product of:
              0.24659266 = queryWeight, product of:
                3.2318692 = boost
                4.2870083 = idf(docFreq=1596, maxDocs=42740)
                0.017798034 = queryNorm
              0.80381405 = fieldWeight in 664, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.2870083 = idf(docFreq=1596, maxDocs=42740)
                0.09375 = fieldNorm(doc=664)
          0.5270065 = weight(abstract_txt:bookmarking in 664) [ClassicSimilarity], result of:
            0.5270065 = score(doc=664,freq=1.0), product of:
              0.69088453 = queryWeight, product of:
                4.770833 = boost
                8.13653 = idf(docFreq=33, maxDocs=42740)
                0.017798034 = queryNorm
              0.7627997 = fieldWeight in 664, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.13653 = idf(docFreq=33, maxDocs=42740)
                0.09375 = fieldNorm(doc=664)
        0.32 = coord(8/25)
    
  4. Estellés Arolas, E.; González Ladrón-de-Guevar, F.: Uses of explicit and implicit tags in social bookmarking (2012) 0.30
    0.29747567 = sum of:
      0.29747567 = product of:
        0.92961144 = sum of:
          0.015770918 = weight(abstract_txt:with in 1985) [ClassicSimilarity], result of:
            0.015770918 = score(doc=1985,freq=2.0), product of:
              0.056697167 = queryWeight, product of:
                1.2653153 = boost
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.017798034 = queryNorm
              0.2781606 = fieldWeight in 1985, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.078125 = fieldNorm(doc=1985)
          0.049892243 = weight(abstract_txt:links in 1985) [ClassicSimilarity], result of:
            0.049892243 = score(doc=1985,freq=1.0), product of:
              0.12218337 = queryWeight, product of:
                1.3134366 = boost
                5.2267404 = idf(docFreq=623, maxDocs=42740)
                0.017798034 = queryNorm
              0.40833908 = fieldWeight in 1985, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.2267404 = idf(docFreq=623, maxDocs=42740)
                0.078125 = fieldNorm(doc=1985)
          0.19773316 = weight(abstract_txt:tags in 1985) [ClassicSimilarity], result of:
            0.19773316 = score(doc=1985,freq=5.0), product of:
              0.17894506 = queryWeight, product of:
                1.5895088 = boost
                6.3253527 = idf(docFreq=207, maxDocs=42740)
                0.017798034 = queryNorm
              1.1049937 = fieldWeight in 1985, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                6.3253527 = idf(docFreq=207, maxDocs=42740)
                0.078125 = fieldNorm(doc=1985)
          0.015283746 = weight(abstract_txt:this in 1985) [ClassicSimilarity], result of:
            0.015283746 = score(doc=1985,freq=1.0), product of:
              0.0800787 = queryWeight, product of:
                1.841714 = boost
                2.442996 = idf(docFreq=10095, maxDocs=42740)
                0.017798034 = queryNorm
              0.19085906 = fieldWeight in 1985, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.442996 = idf(docFreq=10095, maxDocs=42740)
                0.078125 = fieldNorm(doc=1985)
          0.022618553 = weight(abstract_txt:that in 1985) [ClassicSimilarity], result of:
            0.022618553 = score(doc=1985,freq=2.0), product of:
              0.085490175 = queryWeight, product of:
                2.0058596 = boost
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.017798034 = queryNorm
              0.2645749 = fieldWeight in 1985, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.078125 = fieldNorm(doc=1985)
          0.07234169 = weight(abstract_txt:tools in 1985) [ClassicSimilarity], result of:
            0.07234169 = score(doc=1985,freq=1.0), product of:
              0.20760672 = queryWeight, product of:
                2.6152437 = boost
                4.4602294 = idf(docFreq=1342, maxDocs=42740)
                0.017798034 = queryNorm
              0.34845543 = fieldWeight in 1985, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4602294 = idf(docFreq=1342, maxDocs=42740)
                0.078125 = fieldNorm(doc=1985)
          0.116799094 = weight(abstract_txt:social in 1985) [ClassicSimilarity], result of:
            0.116799094 = score(doc=1985,freq=2.0), product of:
              0.24659266 = queryWeight, product of:
                3.2318692 = boost
                4.2870083 = idf(docFreq=1596, maxDocs=42740)
                0.017798034 = queryNorm
              0.47365195 = fieldWeight in 1985, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.2870083 = idf(docFreq=1596, maxDocs=42740)
                0.078125 = fieldNorm(doc=1985)
          0.43917206 = weight(abstract_txt:bookmarking in 1985) [ClassicSimilarity], result of:
            0.43917206 = score(doc=1985,freq=1.0), product of:
              0.69088453 = queryWeight, product of:
                4.770833 = boost
                8.13653 = idf(docFreq=33, maxDocs=42740)
                0.017798034 = queryNorm
              0.6356664 = fieldWeight in 1985, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.13653 = idf(docFreq=33, maxDocs=42740)
                0.078125 = fieldNorm(doc=1985)
        0.32 = coord(8/25)
    
  5. Hammond, T.; Hannay, T.; Lund, B.; Flack, M.: Social bookmarking tools (II) : a case study - Connotea (2005) 0.27
    0.26889855 = sum of:
      0.26889855 = product of:
        0.84030795 = sum of:
          0.022961551 = weight(abstract_txt:general in 3190) [ClassicSimilarity], result of:
            0.022961551 = score(doc=3190,freq=1.0), product of:
              0.08451443 = queryWeight, product of:
                1.0923668 = boost
                4.347007 = idf(docFreq=1503, maxDocs=42740)
                0.017798034 = queryNorm
              0.27168792 = fieldWeight in 3190, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.347007 = idf(docFreq=1503, maxDocs=42740)
                0.0625 = fieldNorm(doc=3190)
          0.015946014 = weight(abstract_txt:paper in 3190) [ClassicSimilarity], result of:
            0.015946014 = score(doc=3190,freq=1.0), product of:
              0.07294761 = queryWeight, product of:
                1.171866 = boost
                3.497527 = idf(docFreq=3516, maxDocs=42740)
                0.017798034 = queryNorm
              0.21859543 = fieldWeight in 3190, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.497527 = idf(docFreq=3516, maxDocs=42740)
                0.0625 = fieldNorm(doc=3190)
          0.008921378 = weight(abstract_txt:with in 3190) [ClassicSimilarity], result of:
            0.008921378 = score(doc=3190,freq=1.0), product of:
              0.056697167 = queryWeight, product of:
                1.2653153 = boost
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.017798034 = queryNorm
              0.15735139 = fieldWeight in 3190, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.0625 = fieldNorm(doc=3190)
          0.14033577 = weight(abstract_txt:del.icio.us in 3190) [ClassicSimilarity], result of:
            0.14033577 = score(doc=3190,freq=1.0), product of:
              0.24680004 = queryWeight, product of:
                1.5241582 = boost
                9.097941 = idf(docFreq=12, maxDocs=42740)
                0.017798034 = queryNorm
              0.56862134 = fieldWeight in 3190, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.097941 = idf(docFreq=12, maxDocs=42740)
                0.0625 = fieldNorm(doc=3190)
          0.012226996 = weight(abstract_txt:this in 3190) [ClassicSimilarity], result of:
            0.012226996 = score(doc=3190,freq=1.0), product of:
              0.0800787 = queryWeight, product of:
                1.841714 = boost
                2.442996 = idf(docFreq=10095, maxDocs=42740)
                0.017798034 = queryNorm
              0.15268725 = fieldWeight in 3190, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.442996 = idf(docFreq=10095, maxDocs=42740)
                0.0625 = fieldNorm(doc=3190)
          0.02861046 = weight(abstract_txt:that in 3190) [ClassicSimilarity], result of:
            0.02861046 = score(doc=3190,freq=5.0), product of:
              0.085490175 = queryWeight, product of:
                2.0058596 = boost
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.017798034 = queryNorm
              0.33466372 = fieldWeight in 3190, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.0625 = fieldNorm(doc=3190)
          0.11443927 = weight(abstract_txt:social in 3190) [ClassicSimilarity], result of:
            0.11443927 = score(doc=3190,freq=3.0), product of:
              0.24659266 = queryWeight, product of:
                3.2318692 = boost
                4.2870083 = idf(docFreq=1596, maxDocs=42740)
                0.017798034 = queryNorm
              0.46408224 = fieldWeight in 3190, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.2870083 = idf(docFreq=1596, maxDocs=42740)
                0.0625 = fieldNorm(doc=3190)
          0.4968665 = weight(abstract_txt:bookmarking in 3190) [ClassicSimilarity], result of:
            0.4968665 = score(doc=3190,freq=2.0), product of:
              0.69088453 = queryWeight, product of:
                4.770833 = boost
                8.13653 = idf(docFreq=33, maxDocs=42740)
                0.017798034 = queryNorm
              0.71917444 = fieldWeight in 3190, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.13653 = idf(docFreq=33, maxDocs=42740)
                0.0625 = fieldNorm(doc=3190)
        0.32 = coord(8/25)