Document (#20650)

Author

Cohausz, H.B.

Title

Recherchen in Patentdatenbanken : ein Vergleich der Patentdatenbanken, insbesondere PATDPA und PATOS

Source

Deutscher Dokumentartag 1986, Freiburg, 8.-10.10.1986: Bedarfsorientierte Fachinformation: Methoden und Techniken am Arbeitsplatz. Bearb.: H. Strohl-Goebel

Imprint

Weinheim : VCH

Year

1986

Pages

S.395-406

Field

Patentinformation

Object

PATDPA
PATOS

Similar documents (content)

1. Thomä, E.; Tribian, R.: Entwicklungen bei Patentdatenbanken (1995) 0.62

   0.61951375 = sum of:
     0.61951375 = product of:
       1.2390275 = sum of:
         0.106663406 = weight(abstract_txt:insbesondere in 2411) [ClassicSimilarity], result of:
           0.106663406 = score(doc=2411,freq=1.0), product of:
             0.15265259 = queryWeight, product of:
               5.5898643 = idf(docFreq=448, maxDocs=44218)
               0.027308818 = queryNorm
             0.69873303 = fieldWeight in 2411, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5898643 = idf(docFreq=448, maxDocs=44218)
               0.125 = fieldNorm(doc=2411)
         1.1323642 = weight(abstract_txt:patentdatenbanken in 2411) [ClassicSimilarity], result of:
           1.1323642 = score(doc=2411,freq=1.0), product of:
             0.9290261 = queryWeight, product of:
               3.4888065 = boost
               9.7509775 = idf(docFreq=6, maxDocs=44218)
               0.027308818 = queryNorm
             1.2188722 = fieldWeight in 2411, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.7509775 = idf(docFreq=6, maxDocs=44218)
               0.125 = fieldNorm(doc=2411)
       0.5 = coord(2/4)
   

2. Birkner, M.: Patentdatenbanken: kostenpflichtige mit Mehrwert oder kostenfreie? (2010) 0.57

   0.5732901 = sum of:
     0.5732901 = product of:
       1.1465802 = sum of:
         0.14570238 = weight(abstract_txt:recherchen in 3641) [ClassicSimilarity], result of:
           0.14570238 = score(doc=3641,freq=1.0), product of:
             0.25708985 = queryWeight, product of:
               1.2977481 = boost
               7.2542357 = idf(docFreq=84, maxDocs=44218)
               0.027308818 = queryNorm
             0.5667372 = fieldWeight in 3641, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.2542357 = idf(docFreq=84, maxDocs=44218)
               0.078125 = fieldNorm(doc=3641)
         1.0008779 = weight(abstract_txt:patentdatenbanken in 3641) [ClassicSimilarity], result of:
           1.0008779 = score(doc=3641,freq=2.0), product of:
             0.9290261 = queryWeight, product of:
               3.4888065 = boost
               9.7509775 = idf(docFreq=6, maxDocs=44218)
               0.027308818 = queryNorm
             1.077341 = fieldWeight in 3641, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.7509775 = idf(docFreq=6, maxDocs=44218)
               0.078125 = fieldNorm(doc=3641)
       0.5 = coord(2/4)
   

3. STN International: Information digital : Online-Zugriff auf britische Patente (2005) 0.40

   0.4013031 = sum of:
     0.4013031 = product of:
       0.8026062 = sum of:
         0.10199167 = weight(abstract_txt:recherchen in 3428) [ClassicSimilarity], result of:
           0.10199167 = score(doc=3428,freq=1.0), product of:
             0.25708985 = queryWeight, product of:
               1.2977481 = boost
               7.2542357 = idf(docFreq=84, maxDocs=44218)
               0.027308818 = queryNorm
             0.39671603 = fieldWeight in 3428, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.2542357 = idf(docFreq=84, maxDocs=44218)
               0.0546875 = fieldNorm(doc=3428)
         0.7006146 = weight(abstract_txt:patentdatenbanken in 3428) [ClassicSimilarity], result of:
           0.7006146 = score(doc=3428,freq=2.0), product of:
             0.9290261 = queryWeight, product of:
               3.4888065 = boost
               9.7509775 = idf(docFreq=6, maxDocs=44218)
               0.027308818 = queryNorm
             0.7541387 = fieldWeight in 3428, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.7509775 = idf(docFreq=6, maxDocs=44218)
               0.0546875 = fieldNorm(doc=3428)
       0.5 = coord(2/4)
   

4. Grummann, M.: Sind Verfahren zur maschinellen Indexierung für Literaturbestände Öffentlicher Bibliotheken geeignet? : Retrievaltests von indexierten ekz-Daten mit der Software IDX (2000) 0.18

   0.1816154 = sum of:
     0.1816154 = product of:
       0.3632308 = sum of:
         0.15924746 = weight(abstract_txt:vergleich in 1879) [ClassicSimilarity], result of:
           0.15924746 = score(doc=1879,freq=1.0), product of:
             0.21797341 = queryWeight, product of:
               1.1949499 = boost
               6.6796074 = idf(docFreq=150, maxDocs=44218)
               0.027308818 = queryNorm
             0.73058206 = fieldWeight in 1879, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.6796074 = idf(docFreq=150, maxDocs=44218)
               0.109375 = fieldNorm(doc=1879)
         0.20398334 = weight(abstract_txt:recherchen in 1879) [ClassicSimilarity], result of:
           0.20398334 = score(doc=1879,freq=1.0), product of:
             0.25708985 = queryWeight, product of:
               1.2977481 = boost
               7.2542357 = idf(docFreq=84, maxDocs=44218)
               0.027308818 = queryNorm
             0.79343206 = fieldWeight in 1879, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.2542357 = idf(docFreq=84, maxDocs=44218)
               0.109375 = fieldNorm(doc=1879)
       0.5 = coord(2/4)
   

5. STN baut Patentinformation aus (2004) 0.18

   0.17515364 = sum of:
     0.17515364 = product of:
       0.7006146 = sum of:
         0.7006146 = weight(abstract_txt:patentdatenbanken in 2304) [ClassicSimilarity], result of:
           0.7006146 = score(doc=2304,freq=2.0), product of:
             0.9290261 = queryWeight, product of:
               3.4888065 = boost
               9.7509775 = idf(docFreq=6, maxDocs=44218)
               0.027308818 = queryNorm
             0.7541387 = fieldWeight in 2304, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.7509775 = idf(docFreq=6, maxDocs=44218)
               0.0546875 = fieldNorm(doc=2304)
       0.25 = coord(1/4)