Document (#3101)

Author

Lazinger, S.S.

Title

To merge or not to merge : Israel's Union List of Monographs in the context of merging algorithms

Source

Information technology and libraries. 13(1994) no.3, S.213-219

Year

1994

Abstract

ALEPH, Israel's research library network, was implemented as a highly decentralized network consisting of nearly 30 different files and no union catalogue. To solve the problem of searching these separate files, the Union List of Monographs was implemented in 1991. In reality, neither a union list nor confined to monographs, the Union List of Monographs is, in effect, a union index for locating bibliographic items by author or title, in order to ascertain where they can be found without searching each library's file separately. Reviews the literature of merging files and records, and describes the development of an algorithm for producing the Union List of Monographs

Object

ALEPH

Location

Israel

Similar documents (author)

1. Lazinger, S.S.: Digital preservation and metadata : history, theory, practice (2002) 5.87

   5.871439 = sum of:
     5.871439 = weight(author_txt:lazinger in 1262) [ClassicSimilarity], result of:
       5.871439 = fieldWeight in 1262, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.394302 = idf(docFreq=9, maxDocs=44218)
         0.625 = fieldNorm(doc=1262)
   

2. Lazinger, S.S.: LC Classification of a library and information science library for maximum shelf retrieval (1984) 5.87

   5.871439 = sum of:
     5.871439 = weight(author_txt:lazinger in 339) [ClassicSimilarity], result of:
       5.871439 = fieldWeight in 339, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.394302 = idf(docFreq=9, maxDocs=44218)
         0.625 = fieldNorm(doc=339)
   

3. Lazinger, S.S.; Peritz, B.C.: Reader use of a nationwide research library network : local OPAC vs. remote files (1991) 4.70

   4.697151 = sum of:
     4.697151 = weight(author_txt:lazinger in 3013) [ClassicSimilarity], result of:
       4.697151 = fieldWeight in 3013, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.394302 = idf(docFreq=9, maxDocs=44218)
         0.5 = fieldNorm(doc=3013)
   

4. Meir, D.D.; Lazinger, S.S.: Measuring the performance of a merging algorithm : mismatches, missed-matches, and overlap in Israel's union list (1998) 4.70

   4.697151 = sum of:
     4.697151 = weight(author_txt:lazinger in 3382) [ClassicSimilarity], result of:
       4.697151 = fieldWeight in 3382, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.394302 = idf(docFreq=9, maxDocs=44218)
         0.5 = fieldNorm(doc=3382)
   

5. Shoham, S.; Lazinger, S.S.: ¬The no-main-entry principle and the automated catalog (1991) 4.70

   4.697151 = sum of:
     4.697151 = weight(author_txt:lazinger in 507) [ClassicSimilarity], result of:
       4.697151 = fieldWeight in 507, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.394302 = idf(docFreq=9, maxDocs=44218)
         0.5 = fieldNorm(doc=507)
   

Similar documents (content)

1. Meir, D.D.; Lazinger, S.S.: Measuring the performance of a merging algorithm : mismatches, missed-matches, and overlap in Israel's union list (1998) 0.19

   0.19288535 = sum of:
     0.19288535 = product of:
       0.96442676 = sum of:
         0.070795186 = weight(abstract_txt:aleph in 3382) [ClassicSimilarity], result of:
           0.070795186 = score(doc=3382,freq=1.0), product of:
             0.11812217 = queryWeight, product of:
               1.3404562 = boost
               7.6715355 = idf(docFreq=55, maxDocs=44218)
               0.0114867315 = queryNorm
             0.5993387 = fieldWeight in 3382, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.6715355 = idf(docFreq=55, maxDocs=44218)
               0.078125 = fieldNorm(doc=3382)
         0.23265722 = weight(abstract_txt:merging in 3382) [ClassicSimilarity], result of:
           0.23265722 = score(doc=3382,freq=3.0), product of:
             0.22809172 = queryWeight, product of:
               2.6342483 = boost
               7.538004 = idf(docFreq=63, maxDocs=44218)
               0.0114867315 = queryNorm
             1.0200161 = fieldWeight in 3382, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               7.538004 = idf(docFreq=63, maxDocs=44218)
               0.078125 = fieldNorm(doc=3382)
         0.1224393 = weight(abstract_txt:list in 3382) [ClassicSimilarity], result of:
           0.1224393 = score(doc=3382,freq=1.0), product of:
             0.29102668 = queryWeight, product of:
               4.7047696 = boost
               5.3851523 = idf(docFreq=550, maxDocs=44218)
               0.0114867315 = queryNorm
             0.42071503 = fieldWeight in 3382, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.3851523 = idf(docFreq=550, maxDocs=44218)
               0.078125 = fieldNorm(doc=3382)
         0.29093334 = weight(abstract_txt:monographs in 3382) [ClassicSimilarity], result of:
           0.29093334 = score(doc=3382,freq=1.0), product of:
             0.5182205 = queryWeight, product of:
               6.2781143 = boost
               7.1860275 = idf(docFreq=90, maxDocs=44218)
               0.0114867315 = queryNorm
             0.5614084 = fieldWeight in 3382, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.1860275 = idf(docFreq=90, maxDocs=44218)
               0.078125 = fieldNorm(doc=3382)
         0.24760175 = weight(abstract_txt:union in 3382) [ClassicSimilarity], result of:
           0.24760175 = score(doc=3382,freq=1.0), product of:
             0.52063185 = queryWeight, product of:
               7.445628 = boost
               6.087415 = idf(docFreq=272, maxDocs=44218)
               0.0114867315 = queryNorm
             0.47557932 = fieldWeight in 3382, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.087415 = idf(docFreq=272, maxDocs=44218)
               0.078125 = fieldNorm(doc=3382)
       0.2 = coord(5/25)
   

2. Thurlow, R.: ¬The state of the Union Catalogue (1998) 0.18

   0.17861721 = sum of:
     0.17861721 = product of:
       1.1163576 = sum of:
         0.18805459 = weight(abstract_txt:merging in 147) [ClassicSimilarity], result of:
           0.18805459 = score(doc=147,freq=1.0), product of:
             0.22809172 = queryWeight, product of:
               2.6342483 = boost
               7.538004 = idf(docFreq=63, maxDocs=44218)
               0.0114867315 = queryNorm
             0.8244692 = fieldWeight in 147, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.538004 = idf(docFreq=63, maxDocs=44218)
               0.109375 = fieldNorm(doc=147)
         0.1743538 = weight(abstract_txt:files in 147) [ClassicSimilarity], result of:
           0.1743538 = score(doc=147,freq=2.0), product of:
             0.19704325 = queryWeight, product of:
               2.998668 = boost
               5.720536 = idf(docFreq=393, maxDocs=44218)
               0.0114867315 = queryNorm
             0.8848503 = fieldWeight in 147, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.720536 = idf(docFreq=393, maxDocs=44218)
               0.109375 = fieldNorm(doc=147)
         0.40730667 = weight(abstract_txt:monographs in 147) [ClassicSimilarity], result of:
           0.40730667 = score(doc=147,freq=1.0), product of:
             0.5182205 = queryWeight, product of:
               6.2781143 = boost
               7.1860275 = idf(docFreq=90, maxDocs=44218)
               0.0114867315 = queryNorm
             0.78597176 = fieldWeight in 147, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.1860275 = idf(docFreq=90, maxDocs=44218)
               0.109375 = fieldNorm(doc=147)
         0.34664243 = weight(abstract_txt:union in 147) [ClassicSimilarity], result of:
           0.34664243 = score(doc=147,freq=1.0), product of:
             0.52063185 = queryWeight, product of:
               7.445628 = boost
               6.087415 = idf(docFreq=272, maxDocs=44218)
               0.0114867315 = queryNorm
             0.66581106 = fieldWeight in 147, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.087415 = idf(docFreq=272, maxDocs=44218)
               0.109375 = fieldNorm(doc=147)
       0.16 = coord(4/25)
   

3. Memer, G.: ¬The German Name Authority File (PND) in the Bavarian Union Catalogue : principles, experiences, and costs (2004) 0.08

   0.07986774 = sum of:
     0.07986774 = product of:
       0.66556454 = sum of:
         0.07014029 = weight(abstract_txt:network in 5557) [ClassicSimilarity], result of:
           0.07014029 = score(doc=5557,freq=2.0), product of:
             0.08581449 = queryWeight, product of:
               1.6157801 = boost
               4.6236176 = idf(docFreq=1179, maxDocs=44218)
               0.0114867315 = queryNorm
             0.8173478 = fieldWeight in 5557, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.6236176 = idf(docFreq=1179, maxDocs=44218)
               0.125 = fieldNorm(doc=5557)
         0.19926147 = weight(abstract_txt:files in 5557) [ClassicSimilarity], result of:
           0.19926147 = score(doc=5557,freq=2.0), product of:
             0.19704325 = queryWeight, product of:
               2.998668 = boost
               5.720536 = idf(docFreq=393, maxDocs=44218)
               0.0114867315 = queryNorm
             1.0112575 = fieldWeight in 5557, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.720536 = idf(docFreq=393, maxDocs=44218)
               0.125 = fieldNorm(doc=5557)
         0.39616278 = weight(abstract_txt:union in 5557) [ClassicSimilarity], result of:
           0.39616278 = score(doc=5557,freq=1.0), product of:
             0.52063185 = queryWeight, product of:
               7.445628 = boost
               6.087415 = idf(docFreq=272, maxDocs=44218)
               0.0114867315 = queryNorm
             0.7609269 = fieldWeight in 5557, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.087415 = idf(docFreq=272, maxDocs=44218)
               0.125 = fieldNorm(doc=5557)
       0.12 = coord(3/25)
   

4. Hustand, S.: Problems of duplicate records (1986) 0.07

   0.07194943 = sum of:
     0.07194943 = product of:
       0.44968396 = sum of:
         0.029393129 = weight(abstract_txt:title in 266) [ClassicSimilarity], result of:
           0.029393129 = score(doc=266,freq=1.0), product of:
             0.06573946 = queryWeight, product of:
               5.723078 = idf(docFreq=392, maxDocs=44218)
               0.0114867315 = queryNorm
             0.44711545 = fieldWeight in 266, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.723078 = idf(docFreq=392, maxDocs=44218)
               0.078125 = fieldNorm(doc=266)
         0.038364388 = weight(abstract_txt:separate in 266) [ClassicSimilarity], result of:
           0.038364388 = score(doc=266,freq=1.0), product of:
             0.07851412 = queryWeight, product of:
               1.0928507 = boost
               6.2544694 = idf(docFreq=230, maxDocs=44218)
               0.0114867315 = queryNorm
             0.4886304 = fieldWeight in 266, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.2544694 = idf(docFreq=230, maxDocs=44218)
               0.078125 = fieldNorm(doc=266)
         0.1343247 = weight(abstract_txt:merging in 266) [ClassicSimilarity], result of:
           0.1343247 = score(doc=266,freq=1.0), product of:
             0.22809172 = queryWeight, product of:
               2.6342483 = boost
               7.538004 = idf(docFreq=63, maxDocs=44218)
               0.0114867315 = queryNorm
             0.5889065 = fieldWeight in 266, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.538004 = idf(docFreq=63, maxDocs=44218)
               0.078125 = fieldNorm(doc=266)
         0.24760175 = weight(abstract_txt:union in 266) [ClassicSimilarity], result of:
           0.24760175 = score(doc=266,freq=1.0), product of:
             0.52063185 = queryWeight, product of:
               7.445628 = boost
               6.087415 = idf(docFreq=272, maxDocs=44218)
               0.0114867315 = queryNorm
             0.47557932 = fieldWeight in 266, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.087415 = idf(docFreq=272, maxDocs=44218)
               0.078125 = fieldNorm(doc=266)
       0.16 = coord(4/25)
   

5. Lambert, N.: ORBIT'S PowerSearch : what's great, what's missing (1994) 0.07

   0.07027393 = sum of:
     0.07027393 = product of:
       0.5856161 = sum of:
         0.055820193 = weight(abstract_txt:searching in 2700) [ClassicSimilarity], result of:
           0.055820193 = score(doc=2700,freq=2.0), product of:
             0.07369587 = queryWeight, product of:
               1.4973507 = boost
               4.284727 = idf(docFreq=1655, maxDocs=44218)
               0.0114867315 = queryNorm
             0.7574399 = fieldWeight in 2700, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.284727 = idf(docFreq=1655, maxDocs=44218)
               0.125 = fieldNorm(doc=2700)
         0.21491954 = weight(abstract_txt:merging in 2700) [ClassicSimilarity], result of:
           0.21491954 = score(doc=2700,freq=1.0), product of:
             0.22809172 = queryWeight, product of:
               2.6342483 = boost
               7.538004 = idf(docFreq=63, maxDocs=44218)
               0.0114867315 = queryNorm
             0.9422505 = fieldWeight in 2700, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.538004 = idf(docFreq=63, maxDocs=44218)
               0.125 = fieldNorm(doc=2700)
         0.3148764 = weight(abstract_txt:merge in 2700) [ClassicSimilarity], result of:
           0.3148764 = score(doc=2700,freq=1.0), product of:
             0.29422915 = queryWeight, product of:
               2.9918842 = boost
               8.561393 = idf(docFreq=22, maxDocs=44218)
               0.0114867315 = queryNorm
             1.0701741 = fieldWeight in 2700, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.561393 = idf(docFreq=22, maxDocs=44218)
               0.125 = fieldNorm(doc=2700)
       0.12 = coord(3/25)