Document (#23202)

Author

Wu, C.-J.

Title

Experiments on using the Dublin Core to reduce the retrieval error ratio

Source

Journal of library and information science. 24(1998) no.1, S.50-64

Year

1998

Abstract

In order to test the power of metadata on information retrieval, an experiment was designed and conducted on a group of 7 graduate students using the Dublin Core as the cataloguing metadata. Results show that, on average, the retrieval error rate is only 2.9 per cent for the MES system (http://140.136.85.194), which utilizes the Dublin Core to describe the documents on the World Wide Web, in contrast to 20.7 per cent for the 7 famous search engines including HOTBOT, GAIS, LYCOS, EXCITE, INFOSEEK, YAHOO, and OCTOPUS. The very low error rate indicates that the users can use the information of the Dublin Core to decide whether to retrieve the documents or not

Footnote

In Chinesisch

Theme

Metadaten
Retrievalstudien

Object

Dublin core

Similar documents (content)

1. Notess, G.R.: Comparing net directories (1997) 0.25

   0.24511854 = sum of:
     0.24511854 = product of:
       1.2255927 = sum of:
         0.12607664 = weight(abstract_txt:yahoo in 527) [ClassicSimilarity], result of:
           0.12607664 = score(doc=527,freq=1.0), product of:
             0.121771 = queryWeight, product of:
               1.1226487 = boost
               6.6262937 = idf(docFreq=159, maxDocs=44421)
               0.01636927 = queryNorm
             1.0353584 = fieldWeight in 527, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.6262937 = idf(docFreq=159, maxDocs=44421)
               0.15625 = fieldNorm(doc=527)
         0.17939533 = weight(abstract_txt:lycos in 527) [ClassicSimilarity], result of:
           0.17939533 = score(doc=527,freq=1.0), product of:
             0.15404996 = queryWeight, product of:
               1.2627075 = boost
               7.4529724 = idf(docFreq=69, maxDocs=44421)
               0.01636927 = queryNorm
             1.1645269 = fieldWeight in 527, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.4529724 = idf(docFreq=69, maxDocs=44421)
               0.15625 = fieldNorm(doc=527)
         0.2831876 = weight(abstract_txt:excite in 527) [ClassicSimilarity], result of:
           0.2831876 = score(doc=527,freq=2.0), product of:
             0.16576532 = queryWeight, product of:
               1.3098416 = boost
               7.731176 = idf(docFreq=52, maxDocs=44421)
               0.01636927 = queryNorm
             1.7083646 = fieldWeight in 527, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.731176 = idf(docFreq=52, maxDocs=44421)
               0.15625 = fieldNorm(doc=527)
         0.1991962 = weight(abstract_txt:rate in 527) [ClassicSimilarity], result of:
           0.1991962 = score(doc=527,freq=1.0), product of:
             0.20812209 = queryWeight, product of:
               2.0756114 = boost
               6.1255183 = idf(docFreq=263, maxDocs=44421)
               0.01636927 = queryNorm
             0.95711225 = fieldWeight in 527, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.1255183 = idf(docFreq=263, maxDocs=44421)
               0.15625 = fieldNorm(doc=527)
         0.43773702 = weight(abstract_txt:cent in 527) [ClassicSimilarity], result of:
           0.43773702 = score(doc=527,freq=1.0), product of:
             0.35178152 = queryWeight, product of:
               2.6985064 = boost
               7.963798 = idf(docFreq=41, maxDocs=44421)
               0.01636927 = queryNorm
             1.2443434 = fieldWeight in 527, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.963798 = idf(docFreq=41, maxDocs=44421)
               0.15625 = fieldNorm(doc=527)
       0.2 = coord(5/25)
   

2. Internet search tool details (1996) 0.19

   0.19116437 = sum of:
     0.19116437 = product of:
       0.9558219 = sum of:
         0.12607664 = weight(abstract_txt:yahoo in 5745) [ClassicSimilarity], result of:
           0.12607664 = score(doc=5745,freq=1.0), product of:
             0.121771 = queryWeight, product of:
               1.1226487 = boost
               6.6262937 = idf(docFreq=159, maxDocs=44421)
               0.01636927 = queryNorm
             1.0353584 = fieldWeight in 5745, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.6262937 = idf(docFreq=159, maxDocs=44421)
               0.15625 = fieldNorm(doc=5745)
         0.17939533 = weight(abstract_txt:lycos in 5745) [ClassicSimilarity], result of:
           0.17939533 = score(doc=5745,freq=1.0), product of:
             0.15404996 = queryWeight, product of:
               1.2627075 = boost
               7.4529724 = idf(docFreq=69, maxDocs=44421)
               0.01636927 = queryNorm
             1.1645269 = fieldWeight in 5745, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.4529724 = idf(docFreq=69, maxDocs=44421)
               0.15625 = fieldNorm(doc=5745)
         0.20024388 = weight(abstract_txt:excite in 5745) [ClassicSimilarity], result of:
           0.20024388 = score(doc=5745,freq=1.0), product of:
             0.16576532 = queryWeight, product of:
               1.3098416 = boost
               7.731176 = idf(docFreq=52, maxDocs=44421)
               0.01636927 = queryNorm
             1.2079962 = fieldWeight in 5745, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.731176 = idf(docFreq=52, maxDocs=44421)
               0.15625 = fieldNorm(doc=5745)
         0.20804256 = weight(abstract_txt:infoseek in 5745) [ClassicSimilarity], result of:
           0.20804256 = score(doc=5745,freq=1.0), product of:
             0.17004177 = queryWeight, product of:
               1.3266299 = boost
               7.8302665 = idf(docFreq=47, maxDocs=44421)
               0.01636927 = queryNorm
             1.2234792 = fieldWeight in 5745, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.8302665 = idf(docFreq=47, maxDocs=44421)
               0.15625 = fieldNorm(doc=5745)
         0.24206346 = weight(abstract_txt:hotbot in 5745) [ClassicSimilarity], result of:
           0.24206346 = score(doc=5745,freq=1.0), product of:
             0.18810788 = queryWeight, product of:
               1.3953252 = boost
               8.235732 = idf(docFreq=31, maxDocs=44421)
               0.01636927 = queryNorm
             1.2868332 = fieldWeight in 5745, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.235732 = idf(docFreq=31, maxDocs=44421)
               0.15625 = fieldNorm(doc=5745)
       0.2 = coord(5/25)
   

3. Lin, Z.; Baoming, Z.: Comparative study of WWW search tools (1998) 0.19

   0.19116437 = sum of:
     0.19116437 = product of:
       0.9558219 = sum of:
         0.12607664 = weight(abstract_txt:yahoo in 4558) [ClassicSimilarity], result of:
           0.12607664 = score(doc=4558,freq=1.0), product of:
             0.121771 = queryWeight, product of:
               1.1226487 = boost
               6.6262937 = idf(docFreq=159, maxDocs=44421)
               0.01636927 = queryNorm
             1.0353584 = fieldWeight in 4558, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.6262937 = idf(docFreq=159, maxDocs=44421)
               0.15625 = fieldNorm(doc=4558)
         0.17939533 = weight(abstract_txt:lycos in 4558) [ClassicSimilarity], result of:
           0.17939533 = score(doc=4558,freq=1.0), product of:
             0.15404996 = queryWeight, product of:
               1.2627075 = boost
               7.4529724 = idf(docFreq=69, maxDocs=44421)
               0.01636927 = queryNorm
             1.1645269 = fieldWeight in 4558, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.4529724 = idf(docFreq=69, maxDocs=44421)
               0.15625 = fieldNorm(doc=4558)
         0.20024388 = weight(abstract_txt:excite in 4558) [ClassicSimilarity], result of:
           0.20024388 = score(doc=4558,freq=1.0), product of:
             0.16576532 = queryWeight, product of:
               1.3098416 = boost
               7.731176 = idf(docFreq=52, maxDocs=44421)
               0.01636927 = queryNorm
             1.2079962 = fieldWeight in 4558, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.731176 = idf(docFreq=52, maxDocs=44421)
               0.15625 = fieldNorm(doc=4558)
         0.20804256 = weight(abstract_txt:infoseek in 4558) [ClassicSimilarity], result of:
           0.20804256 = score(doc=4558,freq=1.0), product of:
             0.17004177 = queryWeight, product of:
               1.3266299 = boost
               7.8302665 = idf(docFreq=47, maxDocs=44421)
               0.01636927 = queryNorm
             1.2234792 = fieldWeight in 4558, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.8302665 = idf(docFreq=47, maxDocs=44421)
               0.15625 = fieldNorm(doc=4558)
         0.24206346 = weight(abstract_txt:hotbot in 4558) [ClassicSimilarity], result of:
           0.24206346 = score(doc=4558,freq=1.0), product of:
             0.18810788 = queryWeight, product of:
               1.3953252 = boost
               8.235732 = idf(docFreq=31, maxDocs=44421)
               0.01636927 = queryNorm
             1.2868332 = fieldWeight in 4558, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.235732 = idf(docFreq=31, maxDocs=44421)
               0.15625 = fieldNorm(doc=4558)
       0.2 = coord(5/25)
   

4. Maron, D.; Feinberg, M.: What does it mean to adopt a metadata standard? : a case study of Omeka and the Dublin Core (2018) 0.16

   0.16372676 = sum of:
     0.16372676 = product of:
       0.8186338 = sum of:
         0.032417927 = weight(abstract_txt:indicates in 248) [ClassicSimilarity], result of:
           0.032417927 = score(doc=248,freq=1.0), product of:
             0.10987447 = queryWeight, product of:
               1.0664005 = boost
               6.294296 = idf(docFreq=222, maxDocs=44421)
               0.01636927 = queryNorm
             0.2950451 = fieldWeight in 248, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.294296 = idf(docFreq=222, maxDocs=44421)
               0.046875 = fieldNorm(doc=248)
         0.034618475 = weight(abstract_txt:contrast in 248) [ClassicSimilarity], result of:
           0.034618475 = score(doc=248,freq=1.0), product of:
             0.114792086 = queryWeight, product of:
               1.0900036 = boost
               6.4336095 = idf(docFreq=193, maxDocs=44421)
               0.01636927 = queryNorm
             0.30157545 = fieldWeight in 248, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.4336095 = idf(docFreq=193, maxDocs=44421)
               0.046875 = fieldNorm(doc=248)
         0.09060655 = weight(abstract_txt:metadata in 248) [ClassicSimilarity], result of:
           0.09060655 = score(doc=248,freq=9.0), product of:
             0.13205115 = queryWeight, product of:
               1.6533244 = boost
               4.87927 = idf(docFreq=917, maxDocs=44421)
               0.01636927 = queryNorm
             0.68614733 = fieldWeight in 248, product of:
               3.0 = tf(freq=9.0), with freq of:
                 9.0 = termFreq=9.0
               4.87927 = idf(docFreq=917, maxDocs=44421)
               0.046875 = fieldNorm(doc=248)
         0.23089033 = weight(abstract_txt:core in 248) [ClassicSimilarity], result of:
           0.23089033 = score(doc=248,freq=9.0), product of:
             0.31039616 = queryWeight, product of:
               3.5847602 = boost
               5.2896495 = idf(docFreq=608, maxDocs=44421)
               0.01636927 = queryNorm
             0.7438569 = fieldWeight in 248, product of:
               3.0 = tf(freq=9.0), with freq of:
                 9.0 = termFreq=9.0
               5.2896495 = idf(docFreq=608, maxDocs=44421)
               0.046875 = fieldNorm(doc=248)
         0.43010047 = weight(abstract_txt:dublin in 248) [ClassicSimilarity], result of:
           0.43010047 = score(doc=248,freq=9.0), product of:
             0.46992198 = queryWeight, product of:
               4.410774 = boost
               6.5085106 = idf(docFreq=179, maxDocs=44421)
               0.01636927 = queryNorm
             0.9152593 = fieldWeight in 248, product of:
               3.0 = tf(freq=9.0), with freq of:
                 9.0 = termFreq=9.0
               6.5085106 = idf(docFreq=179, maxDocs=44421)
               0.046875 = fieldNorm(doc=248)
       0.2 = coord(5/25)
   

5. Lagoze, C.: Keeping Dublin Core simple : Cross-domain discovery or resource description? (2001) 0.16

   0.15897281 = sum of:
     0.15897281 = product of:
       0.56776005 = sum of:
         0.02152011 = weight(abstract_txt:reduce in 2216) [ClassicSimilarity], result of:
           0.02152011 = score(doc=2216,freq=1.0), product of:
             0.10956298 = queryWeight, product of:
               1.0648879 = boost
               6.285367 = idf(docFreq=224, maxDocs=44421)
               0.01636927 = queryNorm
             0.19641772 = fieldWeight in 2216, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.285367 = idf(docFreq=224, maxDocs=44421)
               0.03125 = fieldNorm(doc=2216)
         0.023078984 = weight(abstract_txt:contrast in 2216) [ClassicSimilarity], result of:
           0.023078984 = score(doc=2216,freq=1.0), product of:
             0.114792086 = queryWeight, product of:
               1.0900036 = boost
               6.4336095 = idf(docFreq=193, maxDocs=44421)
               0.01636927 = queryNorm
             0.2010503 = fieldWeight in 2216, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.4336095 = idf(docFreq=193, maxDocs=44421)
               0.03125 = fieldNorm(doc=2216)
         0.010126212 = weight(abstract_txt:using in 2216) [ClassicSimilarity], result of:
           0.010126212 = score(doc=2216,freq=2.0), product of:
             0.066282496 = queryWeight, product of:
               1.1713492 = boost
               3.4568708 = idf(docFreq=3806, maxDocs=44421)
               0.01636927 = queryNorm
             0.15277354 = fieldWeight in 2216, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4568708 = idf(docFreq=3806, maxDocs=44421)
               0.03125 = fieldNorm(doc=2216)
         0.012151344 = weight(abstract_txt:documents in 2216) [ClassicSimilarity], result of:
           0.012151344 = score(doc=2216,freq=1.0), product of:
             0.09430333 = queryWeight, product of:
               1.3971739 = boost
               4.123322 = idf(docFreq=1954, maxDocs=44421)
               0.01636927 = queryNorm
             0.12885381 = fieldWeight in 2216, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.123322 = idf(docFreq=1954, maxDocs=44421)
               0.03125 = fieldNorm(doc=2216)
         0.08542467 = weight(abstract_txt:metadata in 2216) [ClassicSimilarity], result of:
           0.08542467 = score(doc=2216,freq=18.0), product of:
             0.13205115 = queryWeight, product of:
               1.6533244 = boost
               4.87927 = idf(docFreq=917, maxDocs=44421)
               0.01636927 = queryNorm
             0.6469059 = fieldWeight in 2216, product of:
               4.2426405 = tf(freq=18.0), with freq of:
                 18.0 = termFreq=18.0
               4.87927 = idf(docFreq=917, maxDocs=44421)
               0.03125 = fieldNorm(doc=2216)
         0.14512366 = weight(abstract_txt:core in 2216) [ClassicSimilarity], result of:
           0.14512366 = score(doc=2216,freq=8.0), product of:
             0.31039616 = queryWeight, product of:
               3.5847602 = boost
               5.2896495 = idf(docFreq=608, maxDocs=44421)
               0.01636927 = queryNorm
             0.46754336 = fieldWeight in 2216, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               5.2896495 = idf(docFreq=608, maxDocs=44421)
               0.03125 = fieldNorm(doc=2216)
         0.27033508 = weight(abstract_txt:dublin in 2216) [ClassicSimilarity], result of:
           0.27033508 = score(doc=2216,freq=8.0), product of:
             0.46992198 = queryWeight, product of:
               4.410774 = boost
               6.5085106 = idf(docFreq=179, maxDocs=44421)
               0.01636927 = queryNorm
             0.5752765 = fieldWeight in 2216, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               6.5085106 = idf(docFreq=179, maxDocs=44421)
               0.03125 = fieldNorm(doc=2216)
       0.28 = coord(7/25)