Document (#23864)

Author

Rapke, K.

Title

Automatische Indexierung von Volltexten für die Gruner+Jahr Pressedatenbank

Source

Information Research & Content Management: Orientierung, Ordnung und Organisation im Wissensmarkt; 23. DGI-Online-Tagung der DGI und 53. Jahrestagung der Deutschen Gesellschaft für Informationswissenschaft und Informationspraxis e.V. DGI, Frankfurt am Main, 8.-10.5.2001. Proceedings. Hrsg.: R. Schmidt

Imprint

Frankfurt am Main : DGI

Year

2001

Pages

S.321-342

Series

Tagungen der Deutschen Gesellschaft für Informationswissenschaft und Informationspraxis; 4

Abstract

Retrievaltests sind die anerkannteste Methode, um neue Verfahren der Inhaltserschließung gegenüber traditionellen Verfahren zu rechtfertigen. Im Rahmen einer Diplomarbeit wurden zwei grundsätzlich unterschiedliche Systeme der automatischen inhaltlichen Erschließung anhand der Pressedatenbank des Verlagshauses Gruner + Jahr (G+J) getestet und evaluiert. Untersucht wurde dabei natürlichsprachliches Retrieval im Vergleich zu Booleschem Retrieval. Bei den beiden Systemen handelt es sich zum einen um Autonomy von Autonomy Inc. und DocCat, das von IBM an die Datenbankstruktur der G+J Pressedatenbank angepasst wurde. Ersteres ist ein auf natürlichsprachlichem Retrieval basierendes, probabilistisches System. DocCat demgegenüber basiert auf Booleschem Retrieval und ist ein lernendes System, das aufgrund einer intellektuell erstellten Trainingsvorlage indexiert. Methodisch geht die Evaluation vom realen Anwendungskontext der Textdokumentation von G+J aus. Die Tests werden sowohl unter statistischen wie auch qualitativen Gesichtspunkten bewertet. Ein Ergebnis der Tests ist, dass DocCat einige Mängel gegenüber der intellektuellen Inhaltserschließung aufweist, die noch behoben werden müssen, während das natürlichsprachliche Retrieval von Autonomy in diesem Rahmen und für die speziellen Anforderungen der G+J Textdokumentation so nicht einsetzbar ist

Theme

Dokumentenmanagement
Automatisches Indexieren
Computerlinguistik
Retrievalstudien

Object

Gruner+Jahr
DocCat
Autonomy
DigDok

Location

D

Similar documents (content)

1. Rapke, K.: Automatische Indexierung von Volltexten für die Gruner+Jahr Pressedatenbank (2001) 2.60

   2.6017554 = sum of:
     2.6017554 = product of:
       2.710162 = sum of:
         0.060843527 = weight(abstract_txt:angepasst in 386) [ClassicSimilarity], result of:
           0.060843527 = score(doc=386,freq=1.0), product of:
             0.12032513 = queryWeight, product of:
               8.090549 = idf(docFreq=36, maxDocs=44421)
               0.014872307 = queryNorm
             0.50565934 = fieldWeight in 386, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.090549 = idf(docFreq=36, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.06277124 = weight(abstract_txt:erstellten in 386) [ClassicSimilarity], result of:
           0.06277124 = score(doc=386,freq=1.0), product of:
             0.12285341 = queryWeight, product of:
               1.0104514 = boost
               8.175107 = idf(docFreq=33, maxDocs=44421)
               0.014872307 = queryNorm
             0.5109442 = fieldWeight in 386, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.175107 = idf(docFreq=33, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.06346141 = weight(abstract_txt:diplomarbeit in 386) [ClassicSimilarity], result of:
           0.06346141 = score(doc=386,freq=1.0), product of:
             0.12375228 = queryWeight, product of:
               1.0141412 = boost
               8.20496 = idf(docFreq=32, maxDocs=44421)
               0.014872307 = queryNorm
             0.51281 = fieldWeight in 386, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.20496 = idf(docFreq=32, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.066507064 = weight(abstract_txt:indexiert in 386) [ClassicSimilarity], result of:
           0.066507064 = score(doc=386,freq=1.0), product of:
             0.1276807 = queryWeight, product of:
               1.030112 = boost
               8.334172 = idf(docFreq=28, maxDocs=44421)
               0.014872307 = queryNorm
             0.52088577 = fieldWeight in 386, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.334172 = idf(docFreq=28, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.07114117 = weight(abstract_txt:methodisch in 386) [ClassicSimilarity], result of:
           0.07114117 = score(doc=386,freq=1.0), product of:
             0.13354494 = queryWeight, product of:
               1.0535024 = boost
               8.523414 = idf(docFreq=23, maxDocs=44421)
               0.014872307 = queryNorm
             0.53271335 = fieldWeight in 386, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.523414 = idf(docFreq=23, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.07715261 = weight(abstract_txt:aufweist in 386) [ClassicSimilarity], result of:
           0.07715261 = score(doc=386,freq=1.0), product of:
             0.14096582 = queryWeight, product of:
               1.0823774 = boost
               8.757029 = idf(docFreq=18, maxDocs=44421)
               0.014872307 = queryNorm
             0.5473143 = fieldWeight in 386, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.757029 = idf(docFreq=18, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.08012994 = weight(abstract_txt:demgegenüber in 386) [ClassicSimilarity], result of:
           0.08012994 = score(doc=386,freq=1.0), product of:
             0.14456949 = queryWeight, product of:
               1.0961251 = boost
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.014872307 = queryNorm
             0.5542659 = fieldWeight in 386, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.08012994 = weight(abstract_txt:mängel in 386) [ClassicSimilarity], result of:
           0.08012994 = score(doc=386,freq=1.0), product of:
             0.14456949 = queryWeight, product of:
               1.0961251 = boost
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.014872307 = queryNorm
             0.5542659 = fieldWeight in 386, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.085508935 = weight(abstract_txt:einsetzbar in 386) [ClassicSimilarity], result of:
           0.085508935 = score(doc=386,freq=1.0), product of:
             0.150969 = queryWeight, product of:
               1.120123 = boost
               9.06241 = idf(docFreq=13, maxDocs=44421)
               0.014872307 = queryNorm
             0.56640065 = fieldWeight in 386, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.06241 = idf(docFreq=13, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.08994708 = weight(abstract_txt:rechtfertigen in 386) [ClassicSimilarity], result of:
           0.08994708 = score(doc=386,freq=1.0), product of:
             0.15614861 = queryWeight, product of:
               1.1391761 = boost
               9.216561 = idf(docFreq=11, maxDocs=44421)
               0.014872307 = queryNorm
             0.5760351 = fieldWeight in 386, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.216561 = idf(docFreq=11, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.035311256 = weight(abstract_txt:wurde in 386) [ClassicSimilarity], result of:
           0.035311256 = score(doc=386,freq=2.0), product of:
             0.08371865 = queryWeight, product of:
               1.1796358 = boost
               4.7719507 = idf(docFreq=1021, maxDocs=44421)
               0.014872307 = queryNorm
             0.42178482 = fieldWeight in 386, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.7719507 = idf(docFreq=1021, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.1066686 = weight(abstract_txt:natürlichsprachliche in 386) [ClassicSimilarity], result of:
           0.1066686 = score(doc=386,freq=1.0), product of:
             0.17494619 = queryWeight, product of:
               1.2057966 = boost
               9.755557 = idf(docFreq=6, maxDocs=44421)
               0.014872307 = queryNorm
             0.6097223 = fieldWeight in 386, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.755557 = idf(docFreq=6, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.11180544 = weight(abstract_txt:datenbankstruktur in 386) [ClassicSimilarity], result of:
           0.11180544 = score(doc=386,freq=1.0), product of:
             0.18051864 = queryWeight, product of:
               1.2248498 = boost
               9.909708 = idf(docFreq=5, maxDocs=44421)
               0.014872307 = queryNorm
             0.61935675 = fieldWeight in 386, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.909708 = idf(docFreq=5, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.051770322 = weight(abstract_txt:rahmen in 386) [ClassicSimilarity], result of:
           0.051770322 = score(doc=386,freq=2.0), product of:
             0.108044006 = queryWeight, product of:
               1.3400998 = boost
               5.421072 = idf(docFreq=533, maxDocs=44421)
               0.014872307 = queryNorm
             0.4791596 = fieldWeight in 386, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.421072 = idf(docFreq=533, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.062227406 = weight(abstract_txt:verfahren in 386) [ClassicSimilarity], result of:
           0.062227406 = score(doc=386,freq=2.0), product of:
             0.122142814 = queryWeight, product of:
               1.4248554 = boost
               5.7639313 = idf(docFreq=378, maxDocs=44421)
               0.014872307 = queryNorm
             0.5094643 = fieldWeight in 386, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.7639313 = idf(docFreq=378, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.0470318 = weight(abstract_txt:jahr in 386) [ClassicSimilarity], result of:
           0.0470318 = score(doc=386,freq=1.0), product of:
             0.12768832 = queryWeight, product of:
               1.4568418 = boost
               5.8933253 = idf(docFreq=332, maxDocs=44421)
               0.014872307 = queryNorm
             0.36833283 = fieldWeight in 386, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8933253 = idf(docFreq=332, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.08933778 = weight(abstract_txt:tests in 386) [ClassicSimilarity], result of:
           0.08933778 = score(doc=386,freq=3.0), product of:
             0.13579167 = queryWeight, product of:
               1.5023578 = boost
               6.0774503 = idf(docFreq=276, maxDocs=44421)
               0.014872307 = queryNorm
             0.65790325 = fieldWeight in 386, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.0774503 = idf(docFreq=276, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.08653452 = weight(abstract_txt:gegenüber in 386) [ClassicSimilarity], result of:
           0.08653452 = score(doc=386,freq=2.0), product of:
             0.15217374 = queryWeight, product of:
               1.5904012 = boost
               6.4336095 = idf(docFreq=193, maxDocs=44421)
               0.014872307 = queryNorm
             0.5686561 = fieldWeight in 386, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.4336095 = idf(docFreq=193, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.119722866 = weight(abstract_txt:inhaltserschließung in 386) [ClassicSimilarity], result of:
           0.119722866 = score(doc=386,freq=2.0), product of:
             0.1889433 = queryWeight, product of:
               1.7721585 = boost
               7.168868 = idf(docFreq=92, maxDocs=44421)
               0.014872307 = queryNorm
             0.6336444 = fieldWeight in 386, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.168868 = idf(docFreq=92, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.059122484 = weight(abstract_txt:retrieval in 386) [ClassicSimilarity], result of:
           0.059122484 = score(doc=386,freq=6.0), product of:
             0.111084834 = queryWeight, product of:
               2.1484942 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.014872307 = queryNorm
             0.53222823 = fieldWeight in 386, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.19078273 = weight(abstract_txt:gruner in 386) [ClassicSimilarity], result of:
           0.19078273 = score(doc=386,freq=1.0), product of:
             0.32477516 = queryWeight, product of:
               2.3234227 = boost
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.014872307 = queryNorm
             0.5874302 = fieldWeight in 386, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.31623355 = weight(abstract_txt:textdokumentation in 386) [ClassicSimilarity], result of:
           0.31623355 = score(doc=386,freq=2.0), product of:
             0.36103728 = queryWeight, product of:
               2.4496996 = boost
               9.909708 = idf(docFreq=5, maxDocs=44421)
               0.014872307 = queryNorm
             0.8759027 = fieldWeight in 386, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.909708 = idf(docFreq=5, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.2913092 = weight(abstract_txt:autonomy in 386) [ClassicSimilarity], result of:
           0.2913092 = score(doc=386,freq=3.0), product of:
             0.34180856 = queryWeight, product of:
               2.9192677 = boost
               7.872826 = idf(docFreq=45, maxDocs=44421)
               0.014872307 = queryNorm
             0.8522584 = fieldWeight in 386, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               7.872826 = idf(docFreq=45, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
         0.40471128 = weight(abstract_txt:pressedatenbank in 386) [ClassicSimilarity], result of:
           0.40471128 = score(doc=386,freq=2.0), product of:
             0.48716274 = queryWeight, product of:
               3.485134 = boost
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.014872307 = queryNorm
             0.8307517 = fieldWeight in 386, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.0625 = fieldNorm(doc=386)
       0.96 = coord(24/25)
   

2. Hartmann, K.: Pressedatenbank: Online-Retrieval und gedruckte Register (1984) 0.16

   0.1590372 = sum of:
     0.1590372 = product of:
       0.99398255 = sum of:
         0.077002496 = weight(abstract_txt:verfahren in 5183) [ClassicSimilarity], result of:
           0.077002496 = score(doc=5183,freq=1.0), product of:
             0.122142814 = queryWeight, product of:
               1.4248554 = boost
               5.7639313 = idf(docFreq=378, maxDocs=44421)
               0.014872307 = queryNorm
             0.63043 = fieldWeight in 5183, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7639313 = idf(docFreq=378, maxDocs=44421)
               0.109375 = fieldNorm(doc=5183)
         0.08230565 = weight(abstract_txt:jahr in 5183) [ClassicSimilarity], result of:
           0.08230565 = score(doc=5183,freq=1.0), product of:
             0.12768832 = queryWeight, product of:
               1.4568418 = boost
               5.8933253 = idf(docFreq=332, maxDocs=44421)
               0.014872307 = queryNorm
             0.64458245 = fieldWeight in 5183, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8933253 = idf(docFreq=332, maxDocs=44421)
               0.109375 = fieldNorm(doc=5183)
         0.33386979 = weight(abstract_txt:gruner in 5183) [ClassicSimilarity], result of:
           0.33386979 = score(doc=5183,freq=1.0), product of:
             0.32477516 = queryWeight, product of:
               2.3234227 = boost
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.014872307 = queryNorm
             1.0280029 = fieldWeight in 5183, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.109375 = fieldNorm(doc=5183)
         0.50080466 = weight(abstract_txt:pressedatenbank in 5183) [ClassicSimilarity], result of:
           0.50080466 = score(doc=5183,freq=1.0), product of:
             0.48716274 = queryWeight, product of:
               3.485134 = boost
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.014872307 = queryNorm
             1.0280029 = fieldWeight in 5183, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.109375 = fieldNorm(doc=5183)
       0.16 = coord(4/25)
   

3. Peters, G.; Gaese, V.: ¬Das DocCat-System in der Textdokumentation von G+J (2003) 0.15

   0.15027267 = sum of:
     0.15027267 = product of:
       0.6261361 = sum of:
         0.03243546 = weight(abstract_txt:wurde in 2507) [ClassicSimilarity], result of:
           0.03243546 = score(doc=2507,freq=3.0), product of:
             0.08371865 = queryWeight, product of:
               1.1796358 = boost
               4.7719507 = idf(docFreq=1021, maxDocs=44421)
               0.014872307 = queryNorm
             0.3874341 = fieldWeight in 2507, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.7719507 = idf(docFreq=1021, maxDocs=44421)
               0.046875 = fieldNorm(doc=2507)
         0.03300107 = weight(abstract_txt:verfahren in 2507) [ClassicSimilarity], result of:
           0.03300107 = score(doc=2507,freq=1.0), product of:
             0.122142814 = queryWeight, product of:
               1.4248554 = boost
               5.7639313 = idf(docFreq=378, maxDocs=44421)
               0.014872307 = queryNorm
             0.27018428 = fieldWeight in 2507, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7639313 = idf(docFreq=378, maxDocs=44421)
               0.046875 = fieldNorm(doc=2507)
         0.03527385 = weight(abstract_txt:jahr in 2507) [ClassicSimilarity], result of:
           0.03527385 = score(doc=2507,freq=1.0), product of:
             0.12768832 = queryWeight, product of:
               1.4568418 = boost
               5.8933253 = idf(docFreq=332, maxDocs=44421)
               0.014872307 = queryNorm
             0.27624962 = fieldWeight in 2507, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8933253 = idf(docFreq=332, maxDocs=44421)
               0.046875 = fieldNorm(doc=2507)
         0.14308704 = weight(abstract_txt:gruner in 2507) [ClassicSimilarity], result of:
           0.14308704 = score(doc=2507,freq=1.0), product of:
             0.32477516 = queryWeight, product of:
               2.3234227 = boost
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.014872307 = queryNorm
             0.44057262 = fieldWeight in 2507, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.046875 = fieldNorm(doc=2507)
         0.16770816 = weight(abstract_txt:textdokumentation in 2507) [ClassicSimilarity], result of:
           0.16770816 = score(doc=2507,freq=1.0), product of:
             0.36103728 = queryWeight, product of:
               2.4496996 = boost
               9.909708 = idf(docFreq=5, maxDocs=44421)
               0.014872307 = queryNorm
             0.46451756 = fieldWeight in 2507, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.909708 = idf(docFreq=5, maxDocs=44421)
               0.046875 = fieldNorm(doc=2507)
         0.21463056 = weight(abstract_txt:pressedatenbank in 2507) [ClassicSimilarity], result of:
           0.21463056 = score(doc=2507,freq=1.0), product of:
             0.48716274 = queryWeight, product of:
               3.485134 = boost
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.014872307 = queryNorm
             0.44057262 = fieldWeight in 2507, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.046875 = fieldNorm(doc=2507)
       0.24 = coord(6/25)
   

4. Bender, N.: Termindaten und Pressedokumentation : Untersuchungen zu Funktion, Nutzen und Optimierung der Ereignisdatenbank bei Gruner + Jahr (1997) 0.14

   0.13842762 = sum of:
     0.13842762 = product of:
       1.1535635 = sum of:
         0.117579505 = weight(abstract_txt:jahr in 2481) [ClassicSimilarity], result of:
           0.117579505 = score(doc=2481,freq=1.0), product of:
             0.12768832 = queryWeight, product of:
               1.4568418 = boost
               5.8933253 = idf(docFreq=332, maxDocs=44421)
               0.014872307 = queryNorm
             0.9208321 = fieldWeight in 2481, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8933253 = idf(docFreq=332, maxDocs=44421)
               0.15625 = fieldNorm(doc=2481)
         0.47695684 = weight(abstract_txt:gruner in 2481) [ClassicSimilarity], result of:
           0.47695684 = score(doc=2481,freq=1.0), product of:
             0.32477516 = queryWeight, product of:
               2.3234227 = boost
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.014872307 = queryNorm
             1.4685755 = fieldWeight in 2481, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.15625 = fieldNorm(doc=2481)
         0.5590272 = weight(abstract_txt:textdokumentation in 2481) [ClassicSimilarity], result of:
           0.5590272 = score(doc=2481,freq=1.0), product of:
             0.36103728 = queryWeight, product of:
               2.4496996 = boost
               9.909708 = idf(docFreq=5, maxDocs=44421)
               0.014872307 = queryNorm
             1.5483918 = fieldWeight in 2481, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.909708 = idf(docFreq=5, maxDocs=44421)
               0.15625 = fieldNorm(doc=2481)
       0.12 = coord(3/25)
   

5. Hartmann, K.: PDS: Retrievalsoftware für die Pressedatenbank (1984) 0.08

   0.08168702 = sum of:
     0.08168702 = product of:
       0.68072516 = sum of:
         0.037453245 = weight(abstract_txt:wurde in 5184) [ClassicSimilarity], result of:
           0.037453245 = score(doc=5184,freq=1.0), product of:
             0.08371865 = queryWeight, product of:
               1.1796358 = boost
               4.7719507 = idf(docFreq=1021, maxDocs=44421)
               0.014872307 = queryNorm
             0.44737038 = fieldWeight in 5184, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7719507 = idf(docFreq=1021, maxDocs=44421)
               0.09375 = fieldNorm(doc=5184)
         0.03620498 = weight(abstract_txt:retrieval in 5184) [ClassicSimilarity], result of:
           0.03620498 = score(doc=5184,freq=1.0), product of:
             0.111084834 = queryWeight, product of:
               2.1484942 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.014872307 = queryNorm
             0.3259219 = fieldWeight in 5184, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.09375 = fieldNorm(doc=5184)
         0.6070669 = weight(abstract_txt:pressedatenbank in 5184) [ClassicSimilarity], result of:
           0.6070669 = score(doc=5184,freq=2.0), product of:
             0.48716274 = queryWeight, product of:
               3.485134 = boost
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.014872307 = queryNorm
             1.2461276 = fieldWeight in 5184, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.09375 = fieldNorm(doc=5184)
       0.12 = coord(3/25)