Document (#27366)

Author

Hamdorf, K.

Title

Jenseits von Google : Erschließung und Recherche von Internet-Angeboten durch Webkataloge

Source

Information - Wissenschaft und Praxis. 55(2004) H.4, S.221-224

Year

2004

Abstract

Auch wenn Suchmaschinen wie Google ihre Ergebnis-Qualität in den letzten Jahren stark gesteigert haben, sind Webkataloge weiterhin eine wertvolle RechercheAlternativefür relevante Internet-Ressourcen. Während die meisten Webkataloge aufgrund des Fachwissens ihrerBearbeiter nur Websites zu einem Thema erschließen, existiert mit dem "Open Directory Project (ODP)" ein weltweiter Webkatalog, in dem bereits über 4,5 Millionen Websites erfasst sind. In der öffentlichen Wahrnehmung spielen Webkataloge kaum eine Rolle, was u.a. an der extremen Heterogenität (sowohl der Katalog-Bearbeiter als auch der Katalog-Qualität) liegt wie auch an der Notwendigkeit, zuerst den geeigneten Katalog selbst recherchieren zu müssen. Mit dem Wissen, wo und wie gute Kataloge zu finden sind, und unter welchen Maßgaben sie entstehen, können viele InternetRecherchen effektiver durchgeführt werden. Neben der Vorstellung exemplarischer Webkataloge werden praxisorientierte Strategien für die Website-Auswahl und -Beschreibung vorgestellt.

Theme

Suchmaschinen

Object

Google
Open Directory Project

Similar documents (content)

1. Hamdorf, K.: Wer katalogosiert das Web? : Dokumentarische Arbeit als Big Business und Freiwilligen-Projekt (2001) 0.20

   0.19901915 = sum of:
     0.19901915 = product of:
       0.82924646 = sum of:
         0.011248997 = weight(abstract_txt:internet in 387) [ClassicSimilarity], result of:
           0.011248997 = score(doc=387,freq=1.0), product of:
             0.048270456 = queryWeight, product of:
               1.0290036 = boost
               3.7286568 = idf(docFreq=2900, maxDocs=44421)
               0.012580912 = queryNorm
             0.23304105 = fieldWeight in 387, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.7286568 = idf(docFreq=2900, maxDocs=44421)
               0.0625 = fieldNorm(doc=387)
         0.01705314 = weight(abstract_txt:auch in 387) [ClassicSimilarity], result of:
           0.01705314 = score(doc=387,freq=1.0), product of:
             0.07291869 = queryWeight, product of:
               1.5489638 = boost
               3.7418423 = idf(docFreq=2862, maxDocs=44421)
               0.012580912 = queryNorm
             0.23386514 = fieldWeight in 387, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.7418423 = idf(docFreq=2862, maxDocs=44421)
               0.0625 = fieldNorm(doc=387)
         0.033925124 = weight(abstract_txt:sind in 387) [ClassicSimilarity], result of:
           0.033925124 = score(doc=387,freq=3.0), product of:
             0.07997296 = queryWeight, product of:
               1.622159 = boost
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.012580912 = queryNorm
             0.42420742 = fieldWeight in 387, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.0625 = fieldNorm(doc=387)
         0.051518843 = weight(abstract_txt:qualität in 387) [ClassicSimilarity], result of:
           0.051518843 = score(doc=387,freq=1.0), product of:
             0.13312192 = queryWeight, product of:
               1.7088385 = boost
               6.192079 = idf(docFreq=246, maxDocs=44421)
               0.012580912 = queryNorm
             0.38700494 = fieldWeight in 387, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.192079 = idf(docFreq=246, maxDocs=44421)
               0.0625 = fieldNorm(doc=387)
         0.05683587 = weight(abstract_txt:websites in 387) [ClassicSimilarity], result of:
           0.05683587 = score(doc=387,freq=1.0), product of:
             0.14213048 = queryWeight, product of:
               1.7657118 = boost
               6.398163 = idf(docFreq=200, maxDocs=44421)
               0.012580912 = queryNorm
             0.39988518 = fieldWeight in 387, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.398163 = idf(docFreq=200, maxDocs=44421)
               0.0625 = fieldNorm(doc=387)
         0.65866446 = weight(abstract_txt:webkataloge in 387) [ClassicSimilarity], result of:
           0.65866446 = score(doc=387,freq=2.0), product of:
             0.78406435 = queryWeight, product of:
               6.557255 = boost
               9.504243 = idf(docFreq=8, maxDocs=44421)
               0.012580912 = queryNorm
             0.8400643 = fieldWeight in 387, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.504243 = idf(docFreq=8, maxDocs=44421)
               0.0625 = fieldNorm(doc=387)
       0.24 = coord(6/25)
   

2. Blittkowsky, R.: ¬Das World Wide Web gleicht einer Fliege : Studien versuchen zu erklären, warum Suchmaschinen nicht immer fündig werden (2001) 0.18

   0.18152955 = sum of:
     0.18152955 = product of:
       0.50424874 = sum of:
         0.020648716 = weight(abstract_txt:gute in 2090) [ClassicSimilarity], result of:
           0.020648716 = score(doc=2090,freq=1.0), product of:
             0.09117538 = queryWeight, product of:
               7.2471204 = idf(docFreq=85, maxDocs=44421)
               0.012580912 = queryNorm
             0.22647251 = fieldWeight in 2090, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.2471204 = idf(docFreq=85, maxDocs=44421)
               0.03125 = fieldNorm(doc=2090)
         0.021840775 = weight(abstract_txt:erfasst in 2090) [ClassicSimilarity], result of:
           0.021840775 = score(doc=2090,freq=1.0), product of:
             0.09465151 = queryWeight, product of:
               1.0188845 = boost
               7.3839793 = idf(docFreq=74, maxDocs=44421)
               0.012580912 = queryNorm
             0.23074935 = fieldWeight in 2090, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.3839793 = idf(docFreq=74, maxDocs=44421)
               0.03125 = fieldNorm(doc=2090)
         0.007954243 = weight(abstract_txt:internet in 2090) [ClassicSimilarity], result of:
           0.007954243 = score(doc=2090,freq=2.0), product of:
             0.048270456 = queryWeight, product of:
               1.0290036 = boost
               3.7286568 = idf(docFreq=2900, maxDocs=44421)
               0.012580912 = queryNorm
             0.16478491 = fieldWeight in 2090, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.7286568 = idf(docFreq=2900, maxDocs=44421)
               0.03125 = fieldNorm(doc=2090)
         0.024202012 = weight(abstract_txt:recherchieren in 2090) [ClassicSimilarity], result of:
           0.024202012 = score(doc=2090,freq=1.0), product of:
             0.10135609 = queryWeight, product of:
               1.0543532 = boost
               7.6410246 = idf(docFreq=57, maxDocs=44421)
               0.012580912 = queryNorm
             0.23878202 = fieldWeight in 2090, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.6410246 = idf(docFreq=57, maxDocs=44421)
               0.03125 = fieldNorm(doc=2090)
         0.03346951 = weight(abstract_txt:google in 2090) [ClassicSimilarity], result of:
           0.03346951 = score(doc=2090,freq=4.0), product of:
             0.099855445 = queryWeight, product of:
               1.4800012 = boost
               5.3628736 = idf(docFreq=565, maxDocs=44421)
               0.012580912 = queryNorm
             0.3351796 = fieldWeight in 2090, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.3628736 = idf(docFreq=565, maxDocs=44421)
               0.03125 = fieldNorm(doc=2090)
         0.01705314 = weight(abstract_txt:auch in 2090) [ClassicSimilarity], result of:
           0.01705314 = score(doc=2090,freq=4.0), product of:
             0.07291869 = queryWeight, product of:
               1.5489638 = boost
               3.7418423 = idf(docFreq=2862, maxDocs=44421)
               0.012580912 = queryNorm
             0.23386514 = fieldWeight in 2090, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.7418423 = idf(docFreq=2862, maxDocs=44421)
               0.03125 = fieldNorm(doc=2090)
         0.023988687 = weight(abstract_txt:sind in 2090) [ClassicSimilarity], result of:
           0.023988687 = score(doc=2090,freq=6.0), product of:
             0.07997296 = queryWeight, product of:
               1.622159 = boost
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.012580912 = queryNorm
             0.29995996 = fieldWeight in 2090, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.03125 = fieldNorm(doc=2090)
         0.025759421 = weight(abstract_txt:qualität in 2090) [ClassicSimilarity], result of:
           0.025759421 = score(doc=2090,freq=1.0), product of:
             0.13312192 = queryWeight, product of:
               1.7088385 = boost
               6.192079 = idf(docFreq=246, maxDocs=44421)
               0.012580912 = queryNorm
             0.19350247 = fieldWeight in 2090, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.192079 = idf(docFreq=246, maxDocs=44421)
               0.03125 = fieldNorm(doc=2090)
         0.32933223 = weight(abstract_txt:webkataloge in 2090) [ClassicSimilarity], result of:
           0.32933223 = score(doc=2090,freq=2.0), product of:
             0.78406435 = queryWeight, product of:
               6.557255 = boost
               9.504243 = idf(docFreq=8, maxDocs=44421)
               0.012580912 = queryNorm
             0.42003214 = fieldWeight in 2090, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.504243 = idf(docFreq=8, maxDocs=44421)
               0.03125 = fieldNorm(doc=2090)
       0.36 = coord(9/25)
   

3. Mal sehen, was Google hat : Suchmaschinen (2001) 0.13

   0.12917195 = sum of:
     0.12917195 = product of:
       0.5382165 = sum of:
         0.04347817 = weight(abstract_txt:google in 776) [ClassicSimilarity], result of:
           0.04347817 = score(doc=776,freq=3.0), product of:
             0.099855445 = queryWeight, product of:
               1.4800012 = boost
               5.3628736 = idf(docFreq=565, maxDocs=44421)
               0.012580912 = queryNorm
             0.4354111 = fieldWeight in 776, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.3628736 = idf(docFreq=565, maxDocs=44421)
               0.046875 = fieldNorm(doc=776)
         0.018087586 = weight(abstract_txt:auch in 776) [ClassicSimilarity], result of:
           0.018087586 = score(doc=776,freq=2.0), product of:
             0.07291869 = queryWeight, product of:
               1.5489638 = boost
               3.7418423 = idf(docFreq=2862, maxDocs=44421)
               0.012580912 = queryNorm
             0.24805143 = fieldWeight in 776, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.7418423 = idf(docFreq=2862, maxDocs=44421)
               0.046875 = fieldNorm(doc=776)
         0.01469001 = weight(abstract_txt:sind in 776) [ClassicSimilarity], result of:
           0.01469001 = score(doc=776,freq=1.0), product of:
             0.07997296 = queryWeight, product of:
               1.622159 = boost
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.012580912 = queryNorm
             0.18368721 = fieldWeight in 776, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.046875 = fieldNorm(doc=776)
         0.038639132 = weight(abstract_txt:qualität in 776) [ClassicSimilarity], result of:
           0.038639132 = score(doc=776,freq=1.0), product of:
             0.13312192 = queryWeight, product of:
               1.7088385 = boost
               6.192079 = idf(docFreq=246, maxDocs=44421)
               0.012580912 = queryNorm
             0.2902537 = fieldWeight in 776, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.192079 = idf(docFreq=246, maxDocs=44421)
               0.046875 = fieldNorm(doc=776)
         0.07401202 = weight(abstract_txt:katalog in 776) [ClassicSimilarity], result of:
           0.07401202 = score(doc=776,freq=1.0), product of:
             0.23503359 = queryWeight, product of:
               2.780909 = boost
               6.717861 = idf(docFreq=145, maxDocs=44421)
               0.012580912 = queryNorm
             0.31489974 = fieldWeight in 776, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.717861 = idf(docFreq=145, maxDocs=44421)
               0.046875 = fieldNorm(doc=776)
         0.3493096 = weight(abstract_txt:webkataloge in 776) [ClassicSimilarity], result of:
           0.3493096 = score(doc=776,freq=1.0), product of:
             0.78406435 = queryWeight, product of:
               6.557255 = boost
               9.504243 = idf(docFreq=8, maxDocs=44421)
               0.012580912 = queryNorm
             0.4455114 = fieldWeight in 776, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.504243 = idf(docFreq=8, maxDocs=44421)
               0.046875 = fieldNorm(doc=776)
       0.24 = coord(6/25)
   

4. Moustafid, Y. El: Semantic Web Techniken für E-Learning (2003) 0.08

   0.081052825 = sum of:
     0.081052825 = product of:
       0.4052641 = sum of:
         0.030671233 = weight(abstract_txt:zuerst in 1585) [ClassicSimilarity], result of:
           0.030671233 = score(doc=1585,freq=1.0), product of:
             0.10228917 = queryWeight, product of:
               1.0591953 = boost
               7.676116 = idf(docFreq=55, maxDocs=44421)
               0.012580912 = queryNorm
             0.2998483 = fieldWeight in 1585, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.676116 = idf(docFreq=55, maxDocs=44421)
               0.0390625 = fieldNorm(doc=1585)
         0.021316426 = weight(abstract_txt:auch in 1585) [ClassicSimilarity], result of:
           0.021316426 = score(doc=1585,freq=4.0), product of:
             0.07291869 = queryWeight, product of:
               1.5489638 = boost
               3.7418423 = idf(docFreq=2862, maxDocs=44421)
               0.012580912 = queryNorm
             0.29233143 = fieldWeight in 1585, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.7418423 = idf(docFreq=2862, maxDocs=44421)
               0.0390625 = fieldNorm(doc=1585)
         0.029985856 = weight(abstract_txt:sind in 1585) [ClassicSimilarity], result of:
           0.029985856 = score(doc=1585,freq=6.0), product of:
             0.07997296 = queryWeight, product of:
               1.622159 = boost
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.012580912 = queryNorm
             0.37494993 = fieldWeight in 1585, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.0390625 = fieldNorm(doc=1585)
         0.03219928 = weight(abstract_txt:qualität in 1585) [ClassicSimilarity], result of:
           0.03219928 = score(doc=1585,freq=1.0), product of:
             0.13312192 = queryWeight, product of:
               1.7088385 = boost
               6.192079 = idf(docFreq=246, maxDocs=44421)
               0.012580912 = queryNorm
             0.24187809 = fieldWeight in 1585, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.192079 = idf(docFreq=246, maxDocs=44421)
               0.0390625 = fieldNorm(doc=1585)
         0.29109132 = weight(abstract_txt:webkataloge in 1585) [ClassicSimilarity], result of:
           0.29109132 = score(doc=1585,freq=1.0), product of:
             0.78406435 = queryWeight, product of:
               6.557255 = boost
               9.504243 = idf(docFreq=8, maxDocs=44421)
               0.012580912 = queryNorm
             0.37125948 = fieldWeight in 1585, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.504243 = idf(docFreq=8, maxDocs=44421)
               0.0390625 = fieldNorm(doc=1585)
       0.2 = coord(5/25)
   

5. Ebeid, N.: Kataloganreicherung / user-created content : oder: Wieso funktioniert mein OPAC nicht wie Amazon? (2009) 0.08

   0.08013828 = sum of:
     0.08013828 = product of:
       0.28620815 = sum of:
         0.037420157 = weight(abstract_txt:wahrnehmung in 606) [ClassicSimilarity], result of:
           0.037420157 = score(doc=606,freq=1.0), product of:
             0.09332412 = queryWeight, product of:
               1.0117149 = boost
               7.33202 = idf(docFreq=78, maxDocs=44421)
               0.012580912 = queryNorm
             0.40096983 = fieldWeight in 606, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.33202 = idf(docFreq=78, maxDocs=44421)
               0.0546875 = fieldNorm(doc=606)
         0.009842873 = weight(abstract_txt:internet in 606) [ClassicSimilarity], result of:
           0.009842873 = score(doc=606,freq=1.0), product of:
             0.048270456 = queryWeight, product of:
               1.0290036 = boost
               3.7286568 = idf(docFreq=2900, maxDocs=44421)
               0.012580912 = queryNorm
             0.20391092 = fieldWeight in 606, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.7286568 = idf(docFreq=2900, maxDocs=44421)
               0.0546875 = fieldNorm(doc=606)
         0.042939723 = weight(abstract_txt:zuerst in 606) [ClassicSimilarity], result of:
           0.042939723 = score(doc=606,freq=1.0), product of:
             0.10228917 = queryWeight, product of:
               1.0591953 = boost
               7.676116 = idf(docFreq=55, maxDocs=44421)
               0.012580912 = queryNorm
             0.4197876 = fieldWeight in 606, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.676116 = idf(docFreq=55, maxDocs=44421)
               0.0546875 = fieldNorm(doc=606)
         0.02928582 = weight(abstract_txt:google in 606) [ClassicSimilarity], result of:
           0.02928582 = score(doc=606,freq=1.0), product of:
             0.099855445 = queryWeight, product of:
               1.4800012 = boost
               5.3628736 = idf(docFreq=565, maxDocs=44421)
               0.012580912 = queryNorm
             0.29328215 = fieldWeight in 606, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.3628736 = idf(docFreq=565, maxDocs=44421)
               0.0546875 = fieldNorm(doc=606)
         0.014921498 = weight(abstract_txt:auch in 606) [ClassicSimilarity], result of:
           0.014921498 = score(doc=606,freq=1.0), product of:
             0.07291869 = queryWeight, product of:
               1.5489638 = boost
               3.7418423 = idf(docFreq=2862, maxDocs=44421)
               0.012580912 = queryNorm
             0.204632 = fieldWeight in 606, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.7418423 = idf(docFreq=2862, maxDocs=44421)
               0.0546875 = fieldNorm(doc=606)
         0.029684482 = weight(abstract_txt:sind in 606) [ClassicSimilarity], result of:
           0.029684482 = score(doc=606,freq=3.0), product of:
             0.07997296 = queryWeight, product of:
               1.622159 = boost
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.012580912 = queryNorm
             0.3711815 = fieldWeight in 606, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.0546875 = fieldNorm(doc=606)
         0.1221136 = weight(abstract_txt:katalog in 606) [ClassicSimilarity], result of:
           0.1221136 = score(doc=606,freq=2.0), product of:
             0.23503359 = queryWeight, product of:
               2.780909 = boost
               6.717861 = idf(docFreq=145, maxDocs=44421)
               0.012580912 = queryNorm
             0.5195581 = fieldWeight in 606, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.717861 = idf(docFreq=145, maxDocs=44421)
               0.0546875 = fieldNorm(doc=606)
       0.28 = coord(7/25)