Document (#18871)

Author

Chen, H.
Houston, A.L.
Sewell, R.R.
Schatz, B.R.

Title

Internet browsing and searching : user evaluations of category map and concept space techniques

Source

Journal of the American Society for Information Science. 49(1998) no.7, S.582-603

Year

1998

Abstract

The Internet provides an exceptional testbed for developing algorithms that can improve bowsing and searching large information spaces. Browsing and searching tasks are susceptible to problems of information overload and vocabulary differences. Much of the current research is aimed at the development and refinement of algorithms to improve browsing and searching by addressing these problems. Our research was focused on discovering whether two of the algorithms our research group has developed, a Kohonen algorithm category map for browsing, and an automatically generated concept space algorithm for searching, can help improve browsing and / or searching the Internet. Our results indicate that a Kohonen self-organizing map (SOM)-based algorithm can successfully categorize a large and eclectic Internet information space (the Entertainment subcategory of Yahoo!) into manageable sub-spaces that users can successfully navigate to locate a homepage of interest to them. The SOM algorithm worked best with browsing tasks that were very broad, and in which subjects skipped around between categories. Subjects especially liked the visual and graphical aspects of the map. Subjects who tried to do a directed search, and those that wanted to use the more familiar mental models (alphabetic or hierarchical organization) for browsing, found that the work did not work well. The results from the concept space experiment were especially encouraging. There were no significant differences among the precision measures for the set of documents identified by subject-suggested terms, thesaurus-suggested terms, and the combination of subject- and thesaurus-suggested terms. The recall measures indicated that the combination of subject- and thesaurs-suggested terms exhibited significantly better recall than subject-suggested terms alone. Furthermore, analysis of the homepages indicated that there was limited overlap between the homepages retrieved by the subject-suggested and thesaurus-suggested terms. Since the retrieval homepages for the most part were different, this suggests that a user can enhance a keyword-based search by using an automatically generated concept space. Subejcts especially liked the level of control that they could exert over the search, and the fact that the terms suggested by the thesaurus were 'real' (i.e., orininating in the homepages) and therefore guaranteed to have retrieval success

Theme

Suchmaschinen

Object

Kohonen-Netz
SOM

Similar documents (author)

1. Chen, H.; Zhang, Y.; Houston, A.L.: Semantic indexing and searching using a Hopfield net (1998) 2.05

   2.0463452 = sum of:
     2.0463452 = product of:
       3.0695179 = sum of:
         0.66568667 = weight(author_txt:chen in 620) [ClassicSimilarity], result of:
           0.66568667 = score(doc=620,freq=1.0), product of:
             0.28771695 = queryWeight, product of:
               6.169829 = idf(docFreq=242, maxDocs=42740)
               0.04663289 = queryNorm
             2.313686 = fieldWeight in 620, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.169829 = idf(docFreq=242, maxDocs=42740)
               0.375 = fieldNorm(doc=620)
         2.4038312 = weight(author_txt:houston in 620) [ClassicSimilarity], result of:
           2.4038312 = score(doc=620,freq=1.0), product of:
             0.6772072 = queryWeight, product of:
               1.5341861 = boost
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.04663289 = queryNorm
             3.5496247 = fieldWeight in 620, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.375 = fieldNorm(doc=620)
       0.6666667 = coord(2/3)
   

2. Chen, H.; Ng, T.D.; Martinez, J.; Schatz, B.R.: ¬A concept space approach to addressing the vocabulary problem in scientific information retrieval : an experiment on the Worm Community System (1997) 1.71

   1.7052879 = sum of:
     1.7052879 = product of:
       2.557932 = sum of:
         0.5547389 = weight(author_txt:chen in 6561) [ClassicSimilarity], result of:
           0.5547389 = score(doc=6561,freq=1.0), product of:
             0.28771695 = queryWeight, product of:
               6.169829 = idf(docFreq=242, maxDocs=42740)
               0.04663289 = queryNorm
             1.9280715 = fieldWeight in 6561, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.169829 = idf(docFreq=242, maxDocs=42740)
               0.3125 = fieldNorm(doc=6561)
         2.003193 = weight(author_txt:schatz in 6561) [ClassicSimilarity], result of:
           2.003193 = score(doc=6561,freq=1.0), product of:
             0.6772072 = queryWeight, product of:
               1.5341861 = boost
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.04663289 = queryNorm
             2.9580207 = fieldWeight in 6561, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.3125 = fieldNorm(doc=6561)
       0.6666667 = coord(2/3)
   

3. Ramsey, M.C.; Chen, H.; Zhu, B.; Schatz, B.R.: ¬A collection of visual thesauri for browsing large collections of geographic images (1999) 1.71

   1.7052879 = sum of:
     1.7052879 = product of:
       2.557932 = sum of:
         0.5547389 = weight(author_txt:chen in 4923) [ClassicSimilarity], result of:
           0.5547389 = score(doc=4923,freq=1.0), product of:
             0.28771695 = queryWeight, product of:
               6.169829 = idf(docFreq=242, maxDocs=42740)
               0.04663289 = queryNorm
             1.9280715 = fieldWeight in 4923, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.169829 = idf(docFreq=242, maxDocs=42740)
               0.3125 = fieldNorm(doc=4923)
         2.003193 = weight(author_txt:schatz in 4923) [ClassicSimilarity], result of:
           2.003193 = score(doc=4923,freq=1.0), product of:
             0.6772072 = queryWeight, product of:
               1.5341861 = boost
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.04663289 = queryNorm
             2.9580207 = fieldWeight in 4923, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.3125 = fieldNorm(doc=4923)
       0.6666667 = coord(2/3)
   

4. Chen, H.; Martinez, J.; Kirchhoff, A.; Ng, T.D.; Schatz, B.R.: Alleviating search uncertainty through concept associations : automatic indexing, co-occurence analysis, and parallel computing (1998) 1.71

   1.7052879 = sum of:
     1.7052879 = product of:
       2.557932 = sum of:
         0.5547389 = weight(author_txt:chen in 118) [ClassicSimilarity], result of:
           0.5547389 = score(doc=118,freq=1.0), product of:
             0.28771695 = queryWeight, product of:
               6.169829 = idf(docFreq=242, maxDocs=42740)
               0.04663289 = queryNorm
             1.9280715 = fieldWeight in 118, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.169829 = idf(docFreq=242, maxDocs=42740)
               0.3125 = fieldNorm(doc=118)
         2.003193 = weight(author_txt:schatz in 118) [ClassicSimilarity], result of:
           2.003193 = score(doc=118,freq=1.0), product of:
             0.6772072 = queryWeight, product of:
               1.5341861 = boost
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.04663289 = queryNorm
             2.9580207 = fieldWeight in 118, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.3125 = fieldNorm(doc=118)
       0.6666667 = coord(2/3)
   

5. Schatz, B.R.; Johnson, E.H.; Cochrane, P.A.; Chen, H.: Interactive term suggestion for users of digital libraries : using thesauri and co-occurrence lists for information retrieval (1996) 1.71

   1.7052879 = sum of:
     1.7052879 = product of:
       2.557932 = sum of:
         0.5547389 = weight(author_txt:chen in 418) [ClassicSimilarity], result of:
           0.5547389 = score(doc=418,freq=1.0), product of:
             0.28771695 = queryWeight, product of:
               6.169829 = idf(docFreq=242, maxDocs=42740)
               0.04663289 = queryNorm
             1.9280715 = fieldWeight in 418, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.169829 = idf(docFreq=242, maxDocs=42740)
               0.3125 = fieldNorm(doc=418)
         2.003193 = weight(author_txt:schatz in 418) [ClassicSimilarity], result of:
           2.003193 = score(doc=418,freq=1.0), product of:
             0.6772072 = queryWeight, product of:
               1.5341861 = boost
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.04663289 = queryNorm
             2.9580207 = fieldWeight in 418, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.3125 = fieldNorm(doc=418)
       0.6666667 = coord(2/3)
   

Similar documents (content)

1. Chen, H.; Lally, A.M.; Zhu, B.; Chau, M.: HelpfulMed : Intelligent searching for medical information over the Internet (2003) 0.28

   0.28326 = sum of:
     0.28326 = product of:
       0.70814997 = sum of:
         0.03678628 = weight(abstract_txt:recall in 2616) [ClassicSimilarity], result of:
           0.03678628 = score(doc=2616,freq=1.0), product of:
             0.10265996 = queryWeight, product of:
               5.733301 = idf(docFreq=375, maxDocs=42740)
               0.017905908 = queryNorm
             0.35833132 = fieldWeight in 2616, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.733301 = idf(docFreq=375, maxDocs=42740)
               0.0625 = fieldNorm(doc=2616)
         0.05588191 = weight(abstract_txt:algorithms in 2616) [ClassicSimilarity], result of:
           0.05588191 = score(doc=2616,freq=1.0), product of:
             0.15529415 = queryWeight, product of:
               1.5063387 = boost
               5.757529 = idf(docFreq=366, maxDocs=42740)
               0.017905908 = queryNorm
             0.35984555 = fieldWeight in 2616, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.757529 = idf(docFreq=366, maxDocs=42740)
               0.0625 = fieldNorm(doc=2616)
         0.036454525 = weight(abstract_txt:concept in 2616) [ClassicSimilarity], result of:
           0.036454525 = score(doc=2616,freq=1.0), product of:
             0.12856463 = queryWeight, product of:
               1.5826147 = boost
               4.5368032 = idf(docFreq=1243, maxDocs=42740)
               0.017905908 = queryNorm
             0.2835502 = fieldWeight in 2616, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.5368032 = idf(docFreq=1243, maxDocs=42740)
               0.0625 = fieldNorm(doc=2616)
         0.21954435 = weight(abstract_txt:kohonen in 2616) [ClassicSimilarity], result of:
           0.21954435 = score(doc=2616,freq=2.0), product of:
             0.26809087 = queryWeight, product of:
               1.6159967 = boost
               9.264996 = idf(docFreq=10, maxDocs=42740)
               0.017905908 = queryNorm
             0.81891763 = fieldWeight in 2616, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.264996 = idf(docFreq=10, maxDocs=42740)
               0.0625 = fieldNorm(doc=2616)
         0.092985556 = weight(abstract_txt:thesaurus in 2616) [ClassicSimilarity], result of:
           0.092985556 = score(doc=2616,freq=3.0), product of:
             0.16641422 = queryWeight, product of:
               1.8005686 = boost
               5.161601 = idf(docFreq=665, maxDocs=42740)
               0.017905908 = queryNorm
             0.5587597 = fieldWeight in 2616, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.161601 = idf(docFreq=665, maxDocs=42740)
               0.0625 = fieldNorm(doc=2616)
         0.073065184 = weight(abstract_txt:algorithm in 2616) [ClassicSimilarity], result of:
           0.073065184 = score(doc=2616,freq=1.0), product of:
             0.20437488 = queryWeight, product of:
               1.9953918 = boost
               5.7200913 = idf(docFreq=380, maxDocs=42740)
               0.017905908 = queryNorm
             0.3575057 = fieldWeight in 2616, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7200913 = idf(docFreq=380, maxDocs=42740)
               0.0625 = fieldNorm(doc=2616)
         0.045519754 = weight(abstract_txt:searching in 2616) [ClassicSimilarity], result of:
           0.045519754 = score(doc=2616,freq=1.0), product of:
             0.17065442 = queryWeight, product of:
               2.2331548 = boost
               4.267783 = idf(docFreq=1627, maxDocs=42740)
               0.017905908 = queryNorm
             0.26673645 = fieldWeight in 2616, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.267783 = idf(docFreq=1627, maxDocs=42740)
               0.0625 = fieldNorm(doc=2616)
         0.025534403 = weight(abstract_txt:that in 2616) [ClassicSimilarity], result of:
           0.025534403 = score(doc=2616,freq=3.0), product of:
             0.09850118 = queryWeight, product of:
               2.2972143 = boost
               2.3946586 = idf(docFreq=10595, maxDocs=42740)
               0.017905908 = queryNorm
             0.2592294 = fieldWeight in 2616, 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=2616)
         0.07665713 = weight(abstract_txt:space in 2616) [ClassicSimilarity], result of:
           0.07665713 = score(doc=2616,freq=1.0), product of:
             0.22731368 = queryWeight, product of:
               2.352785 = boost
               5.39569 = idf(docFreq=526, maxDocs=42740)
               0.017905908 = queryNorm
             0.33723062 = fieldWeight in 2616, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.39569 = idf(docFreq=526, maxDocs=42740)
               0.0625 = fieldNorm(doc=2616)
         0.04572087 = weight(abstract_txt:terms in 2616) [ClassicSimilarity], result of:
           0.04572087 = score(doc=2616,freq=1.0), product of:
             0.18018122 = queryWeight, product of:
               2.478496 = boost
               4.05999 = idf(docFreq=2003, maxDocs=42740)
               0.017905908 = queryNorm
             0.25374937 = fieldWeight in 2616, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.05999 = idf(docFreq=2003, maxDocs=42740)
               0.0625 = fieldNorm(doc=2616)
       0.4 = coord(10/25)
   

2. Chung, W.; Zhang, Y.; Huang, Z.; Wang, G.; Ong, T.-H.; Chen, H.: Internet searching and browsing in a multilingual world : an experiment an the Chinese Business Intelligence Portal (CBizPort) (2004) 0.27

   0.2702787 = sum of:
     0.2702787 = product of:
       0.75077415 = sum of:
         0.03974387 = weight(abstract_txt:internet in 3394) [ClassicSimilarity], result of:
           0.03974387 = score(doc=3394,freq=4.0), product of:
             0.0857921 = queryWeight, product of:
               1.2928201 = boost
               3.7060635 = idf(docFreq=2854, maxDocs=42740)
               0.017905908 = queryNorm
             0.46325794 = fieldWeight in 3394, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.7060635 = idf(docFreq=2854, maxDocs=42740)
               0.0625 = fieldNorm(doc=3394)
         0.042513963 = weight(abstract_txt:especially in 3394) [ClassicSimilarity], result of:
           0.042513963 = score(doc=3394,freq=1.0), product of:
             0.1294182 = queryWeight, product of:
               1.3751268 = boost
               5.2560105 = idf(docFreq=605, maxDocs=42740)
               0.017905908 = queryNorm
             0.32850066 = fieldWeight in 3394, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.2560105 = idf(docFreq=605, maxDocs=42740)
               0.0625 = fieldNorm(doc=3394)
         0.065953225 = weight(abstract_txt:subjects in 3394) [ClassicSimilarity], result of:
           0.065953225 = score(doc=3394,freq=2.0), product of:
             0.13765383 = queryWeight, product of:
               1.4182057 = boost
               5.420667 = idf(docFreq=513, maxDocs=42740)
               0.017905908 = queryNorm
             0.4791238 = fieldWeight in 3394, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.420667 = idf(docFreq=513, maxDocs=42740)
               0.0625 = fieldNorm(doc=3394)
         0.024561204 = weight(abstract_txt:were in 3394) [ClassicSimilarity], result of:
           0.024561204 = score(doc=3394,freq=1.0), product of:
             0.106436424 = queryWeight, product of:
               1.6099582 = boost
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.017905908 = queryNorm
             0.23075938 = fieldWeight in 3394, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.0625 = fieldNorm(doc=3394)
         0.16554844 = weight(abstract_txt:liked in 3394) [ClassicSimilarity], result of:
           0.16554844 = score(doc=3394,freq=1.0), product of:
             0.27982977 = queryWeight, product of:
               1.6509975 = boost
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.017905908 = queryNorm
             0.5916041 = fieldWeight in 3394, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.0625 = fieldNorm(doc=3394)
         0.101785265 = weight(abstract_txt:searching in 3394) [ClassicSimilarity], result of:
           0.101785265 = score(doc=3394,freq=5.0), product of:
             0.17065442 = queryWeight, product of:
               2.2331548 = boost
               4.267783 = idf(docFreq=1627, maxDocs=42740)
               0.017905908 = queryNorm
             0.59644085 = fieldWeight in 3394, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.267783 = idf(docFreq=1627, maxDocs=42740)
               0.0625 = fieldNorm(doc=3394)
         0.029484589 = weight(abstract_txt:that in 3394) [ClassicSimilarity], result of:
           0.029484589 = score(doc=3394,freq=4.0), product of:
             0.09850118 = queryWeight, product of:
               2.2972143 = boost
               2.3946586 = idf(docFreq=10595, maxDocs=42740)
               0.017905908 = queryNorm
             0.29933232 = fieldWeight in 3394, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               2.3946586 = idf(docFreq=10595, maxDocs=42740)
               0.0625 = fieldNorm(doc=3394)
         0.04572087 = weight(abstract_txt:terms in 3394) [ClassicSimilarity], result of:
           0.04572087 = score(doc=3394,freq=1.0), product of:
             0.18018122 = queryWeight, product of:
               2.478496 = boost
               4.05999 = idf(docFreq=2003, maxDocs=42740)
               0.017905908 = queryNorm
             0.25374937 = fieldWeight in 3394, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.05999 = idf(docFreq=2003, maxDocs=42740)
               0.0625 = fieldNorm(doc=3394)
         0.23546274 = weight(abstract_txt:browsing in 3394) [ClassicSimilarity], result of:
           0.23546274 = score(doc=3394,freq=4.0), product of:
             0.33850208 = queryWeight, product of:
               3.3971455 = boost
               5.5648165 = idf(docFreq=444, maxDocs=42740)
               0.017905908 = queryNorm
             0.69560206 = fieldWeight in 3394, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.5648165 = idf(docFreq=444, maxDocs=42740)
               0.0625 = fieldNorm(doc=3394)
       0.36 = coord(9/25)
   

3. Chen, H.; Martinez, J.; Kirchhoff, A.; Ng, T.D.; Schatz, B.R.: Alleviating search uncertainty through concept associations : automatic indexing, co-occurence analysis, and parallel computing (1998) 0.24

   0.24356991 = sum of:
     0.24356991 = product of:
       0.67658305 = sum of:
         0.04598285 = weight(abstract_txt:recall in 118) [ClassicSimilarity], result of:
           0.04598285 = score(doc=118,freq=1.0), product of:
             0.10265996 = queryWeight, product of:
               5.733301 = idf(docFreq=375, maxDocs=42740)
               0.017905908 = queryNorm
             0.44791415 = fieldWeight in 118, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.733301 = idf(docFreq=375, maxDocs=42740)
               0.078125 = fieldNorm(doc=118)
         0.064443104 = weight(abstract_txt:concept in 118) [ClassicSimilarity], result of:
           0.064443104 = score(doc=118,freq=2.0), product of:
             0.12856463 = queryWeight, product of:
               1.5826147 = boost
               4.5368032 = idf(docFreq=1243, maxDocs=42740)
               0.017905908 = queryNorm
             0.5012507 = fieldWeight in 118, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.5368032 = idf(docFreq=1243, maxDocs=42740)
               0.078125 = fieldNorm(doc=118)
         0.06140301 = weight(abstract_txt:were in 118) [ClassicSimilarity], result of:
           0.06140301 = score(doc=118,freq=4.0), product of:
             0.106436424 = queryWeight, product of:
               1.6099582 = boost
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.017905908 = queryNorm
             0.57689846 = fieldWeight in 118, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.078125 = fieldNorm(doc=118)
         0.036466476 = weight(abstract_txt:subject in 118) [ClassicSimilarity], result of:
           0.036466476 = score(doc=118,freq=1.0), product of:
             0.1193749 = queryWeight, product of:
               1.7050062 = boost
               3.9101257 = idf(docFreq=2327, maxDocs=42740)
               0.017905908 = queryNorm
             0.30547857 = fieldWeight in 118, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.9101257 = idf(docFreq=2327, maxDocs=42740)
               0.078125 = fieldNorm(doc=118)
         0.09490299 = weight(abstract_txt:thesaurus in 118) [ClassicSimilarity], result of:
           0.09490299 = score(doc=118,freq=2.0), product of:
             0.16641422 = queryWeight, product of:
               1.8005686 = boost
               5.161601 = idf(docFreq=665, maxDocs=42740)
               0.017905908 = queryNorm
             0.57028174 = fieldWeight in 118, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.161601 = idf(docFreq=665, maxDocs=42740)
               0.078125 = fieldNorm(doc=118)
         0.026060939 = weight(abstract_txt:that in 118) [ClassicSimilarity], result of:
           0.026060939 = score(doc=118,freq=2.0), product of:
             0.09850118 = queryWeight, product of:
               2.2972143 = boost
               2.3946586 = idf(docFreq=10595, maxDocs=42740)
               0.017905908 = queryNorm
             0.2645749 = fieldWeight in 118, 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=118)
         0.095821425 = weight(abstract_txt:space in 118) [ClassicSimilarity], result of:
           0.095821425 = score(doc=118,freq=1.0), product of:
             0.22731368 = queryWeight, product of:
               2.352785 = boost
               5.39569 = idf(docFreq=526, maxDocs=42740)
               0.017905908 = queryNorm
             0.4215383 = fieldWeight in 118, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.39569 = idf(docFreq=526, maxDocs=42740)
               0.078125 = fieldNorm(doc=118)
         0.08082384 = weight(abstract_txt:terms in 118) [ClassicSimilarity], result of:
           0.08082384 = score(doc=118,freq=2.0), product of:
             0.18018122 = queryWeight, product of:
               2.478496 = boost
               4.05999 = idf(docFreq=2003, maxDocs=42740)
               0.017905908 = queryNorm
             0.44856972 = fieldWeight in 118, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.05999 = idf(docFreq=2003, maxDocs=42740)
               0.078125 = fieldNorm(doc=118)
         0.17067842 = weight(abstract_txt:suggested in 118) [ClassicSimilarity], result of:
           0.17067842 = score(doc=118,freq=1.0), product of:
             0.39066958 = queryWeight, product of:
               3.9015236 = boost
               5.5921526 = idf(docFreq=432, maxDocs=42740)
               0.017905908 = queryNorm
             0.4368869 = fieldWeight in 118, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5921526 = idf(docFreq=432, maxDocs=42740)
               0.078125 = fieldNorm(doc=118)
       0.36 = coord(9/25)
   

4. Chen, H.; Ng, T.D.; Martinez, J.; Schatz, B.R.: ¬A concept space approach to addressing the vocabulary problem in scientific information retrieval : an experiment on the Worm Community System (1997) 0.23

   0.23476599 = sum of:
     0.23476599 = product of:
       0.65212774 = sum of:
         0.065953225 = weight(abstract_txt:subjects in 6561) [ClassicSimilarity], result of:
           0.065953225 = score(doc=6561,freq=2.0), product of:
             0.13765383 = queryWeight, product of:
               1.4182057 = boost
               5.420667 = idf(docFreq=513, maxDocs=42740)
               0.017905908 = queryNorm
             0.4791238 = fieldWeight in 6561, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.420667 = idf(docFreq=513, maxDocs=42740)
               0.0625 = fieldNorm(doc=6561)
         0.036454525 = weight(abstract_txt:concept in 6561) [ClassicSimilarity], result of:
           0.036454525 = score(doc=6561,freq=1.0), product of:
             0.12856463 = queryWeight, product of:
               1.5826147 = boost
               4.5368032 = idf(docFreq=1243, maxDocs=42740)
               0.017905908 = queryNorm
             0.2835502 = fieldWeight in 6561, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.5368032 = idf(docFreq=1243, maxDocs=42740)
               0.0625 = fieldNorm(doc=6561)
         0.024561204 = weight(abstract_txt:were in 6561) [ClassicSimilarity], result of:
           0.024561204 = score(doc=6561,freq=1.0), product of:
             0.106436424 = queryWeight, product of:
               1.6099582 = boost
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.017905908 = queryNorm
             0.23075938 = fieldWeight in 6561, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.0625 = fieldNorm(doc=6561)
         0.029173179 = weight(abstract_txt:subject in 6561) [ClassicSimilarity], result of:
           0.029173179 = score(doc=6561,freq=1.0), product of:
             0.1193749 = queryWeight, product of:
               1.7050062 = boost
               3.9101257 = idf(docFreq=2327, maxDocs=42740)
               0.017905908 = queryNorm
             0.24438286 = fieldWeight in 6561, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.9101257 = idf(docFreq=2327, maxDocs=42740)
               0.0625 = fieldNorm(doc=6561)
         0.12004384 = weight(abstract_txt:thesaurus in 6561) [ClassicSimilarity], result of:
           0.12004384 = score(doc=6561,freq=5.0), product of:
             0.16641422 = queryWeight, product of:
               1.8005686 = boost
               5.161601 = idf(docFreq=665, maxDocs=42740)
               0.017905908 = queryNorm
             0.7213557 = fieldWeight in 6561, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               5.161601 = idf(docFreq=665, maxDocs=42740)
               0.0625 = fieldNorm(doc=6561)
         0.014742294 = weight(abstract_txt:that in 6561) [ClassicSimilarity], result of:
           0.014742294 = score(doc=6561,freq=1.0), product of:
             0.09850118 = queryWeight, product of:
               2.2972143 = boost
               2.3946586 = idf(docFreq=10595, maxDocs=42740)
               0.017905908 = queryNorm
             0.14966616 = fieldWeight in 6561, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.3946586 = idf(docFreq=10595, maxDocs=42740)
               0.0625 = fieldNorm(doc=6561)
         0.07665713 = weight(abstract_txt:space in 6561) [ClassicSimilarity], result of:
           0.07665713 = score(doc=6561,freq=1.0), product of:
             0.22731368 = queryWeight, product of:
               2.352785 = boost
               5.39569 = idf(docFreq=526, maxDocs=42740)
               0.017905908 = queryNorm
             0.33723062 = fieldWeight in 6561, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.39569 = idf(docFreq=526, maxDocs=42740)
               0.0625 = fieldNorm(doc=6561)
         0.09144174 = weight(abstract_txt:terms in 6561) [ClassicSimilarity], result of:
           0.09144174 = score(doc=6561,freq=4.0), product of:
             0.18018122 = queryWeight, product of:
               2.478496 = boost
               4.05999 = idf(docFreq=2003, maxDocs=42740)
               0.017905908 = queryNorm
             0.50749874 = fieldWeight in 6561, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.05999 = idf(docFreq=2003, maxDocs=42740)
               0.0625 = fieldNorm(doc=6561)
         0.1931006 = weight(abstract_txt:suggested in 6561) [ClassicSimilarity], result of:
           0.1931006 = score(doc=6561,freq=2.0), product of:
             0.39066958 = queryWeight, product of:
               3.9015236 = boost
               5.5921526 = idf(docFreq=432, maxDocs=42740)
               0.017905908 = queryNorm
             0.4942811 = fieldWeight in 6561, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.5921526 = idf(docFreq=432, maxDocs=42740)
               0.0625 = fieldNorm(doc=6561)
       0.36 = coord(9/25)
   

5. Zhang, J.; Mostafa, J.; Tripathy, H.: Information retrieval by semantic analysis and visualization of the concept space of D-Lib® magazine (2002) 0.22

   0.2169499 = sum of:
     0.2169499 = product of:
       0.49306795 = sum of:
         0.025895704 = weight(abstract_txt:improve in 3212) [ClassicSimilarity], result of:
           0.025895704 = score(doc=3212,freq=2.0), product of:
             0.11716631 = queryWeight, product of:
               1.3084178 = boost
               5.0010357 = idf(docFreq=781, maxDocs=42740)
               0.017905908 = queryNorm
             0.22101663 = fieldWeight in 3212, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.0010357 = idf(docFreq=781, maxDocs=42740)
               0.03125 = fieldNorm(doc=3212)
         0.027940955 = weight(abstract_txt:algorithms in 3212) [ClassicSimilarity], result of:
           0.027940955 = score(doc=3212,freq=1.0), product of:
             0.15529415 = queryWeight, product of:
               1.5063387 = boost
               5.757529 = idf(docFreq=366, maxDocs=42740)
               0.017905908 = queryNorm
             0.17992277 = fieldWeight in 3212, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.757529 = idf(docFreq=366, maxDocs=42740)
               0.03125 = fieldNorm(doc=3212)
         0.0407574 = weight(abstract_txt:concept in 3212) [ClassicSimilarity], result of:
           0.0407574 = score(doc=3212,freq=5.0), product of:
             0.12856463 = queryWeight, product of:
               1.5826147 = boost
               4.5368032 = idf(docFreq=1243, maxDocs=42740)
               0.017905908 = queryNorm
             0.31701878 = fieldWeight in 3212, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.5368032 = idf(docFreq=1243, maxDocs=42740)
               0.03125 = fieldNorm(doc=3212)
         0.012280602 = weight(abstract_txt:were in 3212) [ClassicSimilarity], result of:
           0.012280602 = score(doc=3212,freq=1.0), product of:
             0.106436424 = queryWeight, product of:
               1.6099582 = boost
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.017905908 = queryNorm
             0.11537969 = fieldWeight in 3212, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.03125 = fieldNorm(doc=3212)
         0.025264714 = weight(abstract_txt:subject in 3212) [ClassicSimilarity], result of:
           0.025264714 = score(doc=3212,freq=3.0), product of:
             0.1193749 = queryWeight, product of:
               1.7050062 = boost
               3.9101257 = idf(docFreq=2327, maxDocs=42740)
               0.017905908 = queryNorm
             0.21164176 = fieldWeight in 3212, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.9101257 = idf(docFreq=2327, maxDocs=42740)
               0.03125 = fieldNorm(doc=3212)
         0.0890269 = weight(abstract_txt:thesaurus in 3212) [ClassicSimilarity], result of:
           0.0890269 = score(doc=3212,freq=11.0), product of:
             0.16641422 = queryWeight, product of:
               1.8005686 = boost
               5.161601 = idf(docFreq=665, maxDocs=42740)
               0.017905908 = queryNorm
             0.5349717 = fieldWeight in 3212, product of:
               3.3166249 = tf(freq=11.0), with freq of:
                 11.0 = termFreq=11.0
               5.161601 = idf(docFreq=665, maxDocs=42740)
               0.03125 = fieldNorm(doc=3212)
         0.05166489 = weight(abstract_txt:algorithm in 3212) [ClassicSimilarity], result of:
           0.05166489 = score(doc=3212,freq=2.0), product of:
             0.20437488 = queryWeight, product of:
               1.9953918 = boost
               5.7200913 = idf(docFreq=380, maxDocs=42740)
               0.017905908 = queryNorm
             0.2527947 = fieldWeight in 3212, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.7200913 = idf(docFreq=380, maxDocs=42740)
               0.03125 = fieldNorm(doc=3212)
         0.022759877 = weight(abstract_txt:searching in 3212) [ClassicSimilarity], result of:
           0.022759877 = score(doc=3212,freq=1.0), product of:
             0.17065442 = queryWeight, product of:
               2.2331548 = boost
               4.267783 = idf(docFreq=1627, maxDocs=42740)
               0.017905908 = queryNorm
             0.13336822 = fieldWeight in 3212, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.267783 = idf(docFreq=1627, maxDocs=42740)
               0.03125 = fieldNorm(doc=3212)
         0.018055549 = weight(abstract_txt:that in 3212) [ClassicSimilarity], result of:
           0.018055549 = score(doc=3212,freq=6.0), product of:
             0.09850118 = queryWeight, product of:
               2.2972143 = boost
               2.3946586 = idf(docFreq=10595, maxDocs=42740)
               0.017905908 = queryNorm
             0.18330286 = fieldWeight in 3212, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               2.3946586 = idf(docFreq=10595, maxDocs=42740)
               0.03125 = fieldNorm(doc=3212)
         0.09388544 = weight(abstract_txt:space in 3212) [ClassicSimilarity], result of:
           0.09388544 = score(doc=3212,freq=6.0), product of:
             0.22731368 = queryWeight, product of:
               2.352785 = boost
               5.39569 = idf(docFreq=526, maxDocs=42740)
               0.017905908 = queryNorm
             0.4130215 = fieldWeight in 3212, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.39569 = idf(docFreq=526, maxDocs=42740)
               0.03125 = fieldNorm(doc=3212)
         0.08553592 = weight(abstract_txt:terms in 3212) [ClassicSimilarity], result of:
           0.08553592 = score(doc=3212,freq=14.0), product of:
             0.18018122 = queryWeight, product of:
               2.478496 = boost
               4.05999 = idf(docFreq=2003, maxDocs=42740)
               0.017905908 = queryNorm
             0.4747216 = fieldWeight in 3212, product of:
               3.7416575 = tf(freq=14.0), with freq of:
                 14.0 = termFreq=14.0
               4.05999 = idf(docFreq=2003, maxDocs=42740)
               0.03125 = fieldNorm(doc=3212)
       0.44 = coord(11/25)