Document (#8503)

Author

Silvester, J.P.
Genuardi, M.T.
Klingbiel, P.H.

Title

Machine-aided indexing at NASA

Source

Information processing and management. 30(1994) no.5, S.631-645

Year

1994

Abstract

Describes the NASA Lexical Dictionary (NLD), a machine aided indexing system used online at the NASA Center for AeroSpace Information (CASI). This system automatically suggests a set of candidate terms from NASA's controlled vocabulary for any designated natural language text input. The system is comprised of a text processor that is based on the computational, nonsyntactic analysis of input text and an extensive knowledge base that serves to recognize and translate text-extracted concepts. The functions of the various NLD system components are described in detail, and production and quality benefits resulting from the implementation of machine-aided indexing at CASI are discussed

Theme

Automatisches Indexieren

Similar documents (author)

1. Silvester, J.P.: Computer supported indexing : a history and evaluation of NASA's MAI system (1998) 6.19

   6.1935673 = sum of:
     6.1935673 = weight(author_txt:silvester in 2302) [ClassicSimilarity], result of:
       6.1935673 = fieldWeight in 2302, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.909708 = idf(docFreq=5, maxDocs=44421)
         0.625 = fieldNorm(doc=2302)
   

2. Silvester, J.P.; Klingbiel, P.H.: ¬An operational system for subject switching between controlled vocabularies (1993) 4.95

   4.954854 = sum of:
     4.954854 = weight(author_txt:silvester in 4356) [ClassicSimilarity], result of:
       4.954854 = fieldWeight in 4356, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.909708 = idf(docFreq=5, maxDocs=44421)
         0.5 = fieldNorm(doc=4356)
   

3. Silvester, J.P.; Genuardi, M.T.: Machine-aided indexing from the analysis of natural language text (1994) 4.95

   4.954854 = sum of:
     4.954854 = weight(author_txt:silvester in 3057) [ClassicSimilarity], result of:
       4.954854 = fieldWeight in 3057, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.909708 = idf(docFreq=5, maxDocs=44421)
         0.5 = fieldNorm(doc=3057)
   

4. MacKrill, K.; Silvester, C.; Pennebaker, J.W.; Petrie, K.J.: What makes an idea worth spreading? : language markers of popularity in TED talks by academics and other speakers (2021) 3.10

   3.0967836 = sum of:
     3.0967836 = weight(author_txt:silvester in 1313) [ClassicSimilarity], result of:
       3.0967836 = fieldWeight in 1313, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.909708 = idf(docFreq=5, maxDocs=44421)
         0.3125 = fieldNorm(doc=1313)
   

Similar documents (content)

1. Buchan, R.L.: Quality indexing with computer-aided lexicography (1992) 0.43

   0.4317332 = sum of:
     0.4317332 = product of:
       2.158666 = sum of:
         0.34156752 = weight(abstract_txt:aerospace in 3946) [ClassicSimilarity], result of:
           0.34156752 = score(doc=3946,freq=1.0), product of:
             0.20402265 = queryWeight, product of:
               1.58509 = boost
               8.928879 = idf(docFreq=15, maxDocs=44421)
               0.014415426 = queryNorm
             1.6741648 = fieldWeight in 3946, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.928879 = idf(docFreq=15, maxDocs=44421)
               0.1875 = fieldNorm(doc=3946)
         0.11851339 = weight(abstract_txt:indexing in 3946) [ClassicSimilarity], result of:
           0.11851339 = score(doc=3946,freq=1.0), product of:
             0.14529344 = queryWeight, product of:
               2.3168526 = boost
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.014415426 = queryNorm
             0.815683 = fieldWeight in 3946, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.1875 = fieldNorm(doc=3946)
         0.073639005 = weight(abstract_txt:system in 3946) [ClassicSimilarity], result of:
           0.073639005 = score(doc=3946,freq=1.0), product of:
             0.11644457 = queryWeight, product of:
               2.3949938 = boost
               3.372775 = idf(docFreq=4140, maxDocs=44421)
               0.014415426 = queryNorm
             0.6323953 = fieldWeight in 3946, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.372775 = idf(docFreq=4140, maxDocs=44421)
               0.1875 = fieldNorm(doc=3946)
         0.6751652 = weight(abstract_txt:aided in 3946) [ClassicSimilarity], result of:
           0.6751652 = score(doc=3946,freq=1.0), product of:
             0.4634552 = queryWeight, product of:
               4.137893 = boost
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.014415426 = queryNorm
             1.4568079 = fieldWeight in 3946, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.1875 = fieldNorm(doc=3946)
         0.94978076 = weight(abstract_txt:nasa in 3946) [ClassicSimilarity], result of:
           0.94978076 = score(doc=3946,freq=1.0), product of:
             0.5818575 = queryWeight, product of:
               4.6364303 = boost
               8.705735 = idf(docFreq=19, maxDocs=44421)
               0.014415426 = queryNorm
             1.6323254 = fieldWeight in 3946, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.705735 = idf(docFreq=19, maxDocs=44421)
               0.1875 = fieldNorm(doc=3946)
       0.2 = coord(5/25)
   

2. Hlava, M.M.K.; Hainebach, R.: Machine aided indexing : European Parliament study and results (1996) 0.21

   0.21144192 = sum of:
     0.21144192 = product of:
       0.881008 = sum of:
         0.057177275 = weight(abstract_txt:base in 5631) [ClassicSimilarity], result of:
           0.057177275 = score(doc=5631,freq=1.0), product of:
             0.0812027 = queryWeight, product of:
               5.633042 = idf(docFreq=431, maxDocs=44421)
               0.014415426 = queryNorm
             0.70413023 = fieldWeight in 5631, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.633042 = idf(docFreq=431, maxDocs=44421)
               0.125 = fieldNorm(doc=5631)
         0.07900893 = weight(abstract_txt:indexing in 5631) [ClassicSimilarity], result of:
           0.07900893 = score(doc=5631,freq=1.0), product of:
             0.14529344 = queryWeight, product of:
               2.3168526 = boost
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.014415426 = queryNorm
             0.5437887 = fieldWeight in 5631, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.125 = fieldNorm(doc=5631)
         0.06942751 = weight(abstract_txt:system in 5631) [ClassicSimilarity], result of:
           0.06942751 = score(doc=5631,freq=2.0), product of:
             0.11644457 = queryWeight, product of:
               2.3949938 = boost
               3.372775 = idf(docFreq=4140, maxDocs=44421)
               0.014415426 = queryNorm
             0.596228 = fieldWeight in 5631, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.372775 = idf(docFreq=4140, maxDocs=44421)
               0.125 = fieldNorm(doc=5631)
         0.14085686 = weight(abstract_txt:machine in 5631) [ClassicSimilarity], result of:
           0.14085686 = score(doc=5631,freq=1.0), product of:
             0.21362263 = queryWeight, product of:
               2.809306 = boost
               5.274979 = idf(docFreq=617, maxDocs=44421)
               0.014415426 = queryNorm
             0.6593724 = fieldWeight in 5631, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.274979 = idf(docFreq=617, maxDocs=44421)
               0.125 = fieldNorm(doc=5631)
         0.084427334 = weight(abstract_txt:text in 5631) [ClassicSimilarity], result of:
           0.084427334 = score(doc=5631,freq=1.0), product of:
             0.16714634 = queryWeight, product of:
               2.8694139 = boost
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.014415426 = queryNorm
             0.50511026 = fieldWeight in 5631, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.125 = fieldNorm(doc=5631)
         0.4501101 = weight(abstract_txt:aided in 5631) [ClassicSimilarity], result of:
           0.4501101 = score(doc=5631,freq=1.0), product of:
             0.4634552 = queryWeight, product of:
               4.137893 = boost
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.014415426 = queryNorm
             0.97120523 = fieldWeight in 5631, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.125 = fieldNorm(doc=5631)
       0.24 = coord(6/25)
   

3. Lancaster, F.W.: Trends in subject indexing from 1957 to 2000 (1980) 0.19

   0.19355783 = sum of:
     0.19355783 = product of:
       0.80649096 = sum of:
         0.04532231 = weight(abstract_txt:production in 208) [ClassicSimilarity], result of:
           0.04532231 = score(doc=208,freq=1.0), product of:
             0.08425364 = queryWeight, product of:
               1.0186127 = boost
               5.7378883 = idf(docFreq=388, maxDocs=44421)
               0.014415426 = queryNorm
             0.53792703 = fieldWeight in 208, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7378883 = idf(docFreq=388, maxDocs=44421)
               0.09375 = fieldNorm(doc=208)
         0.109474234 = weight(abstract_txt:input in 208) [ClassicSimilarity], result of:
           0.109474234 = score(doc=208,freq=1.0), product of:
             0.19110201 = queryWeight, product of:
               2.1695137 = boost
               6.110481 = idf(docFreq=267, maxDocs=44421)
               0.014415426 = queryNorm
             0.57285756 = fieldWeight in 208, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.110481 = idf(docFreq=267, maxDocs=44421)
               0.09375 = fieldNorm(doc=208)
         0.14514868 = weight(abstract_txt:indexing in 208) [ClassicSimilarity], result of:
           0.14514868 = score(doc=208,freq=6.0), product of:
             0.14529344 = queryWeight, product of:
               2.3168526 = boost
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.014415426 = queryNorm
             0.9990036 = fieldWeight in 208, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.09375 = fieldNorm(doc=208)
         0.105642654 = weight(abstract_txt:machine in 208) [ClassicSimilarity], result of:
           0.105642654 = score(doc=208,freq=1.0), product of:
             0.21362263 = queryWeight, product of:
               2.809306 = boost
               5.274979 = idf(docFreq=617, maxDocs=44421)
               0.014415426 = queryNorm
             0.4945293 = fieldWeight in 208, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.274979 = idf(docFreq=617, maxDocs=44421)
               0.09375 = fieldNorm(doc=208)
         0.0633205 = weight(abstract_txt:text in 208) [ClassicSimilarity], result of:
           0.0633205 = score(doc=208,freq=1.0), product of:
             0.16714634 = queryWeight, product of:
               2.8694139 = boost
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.014415426 = queryNorm
             0.3788327 = fieldWeight in 208, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.09375 = fieldNorm(doc=208)
         0.3375826 = weight(abstract_txt:aided in 208) [ClassicSimilarity], result of:
           0.3375826 = score(doc=208,freq=1.0), product of:
             0.4634552 = queryWeight, product of:
               4.137893 = boost
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.014415426 = queryNorm
             0.7284039 = fieldWeight in 208, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.09375 = fieldNorm(doc=208)
       0.24 = coord(6/25)
   

4. Greenrich, E.: CD-ROM data preparation enhancements (1993) 0.18

   0.18181959 = sum of:
     0.18181959 = product of:
       0.9090979 = sum of:
         0.06042975 = weight(abstract_txt:production in 7842) [ClassicSimilarity], result of:
           0.06042975 = score(doc=7842,freq=1.0), product of:
             0.08425364 = queryWeight, product of:
               1.0186127 = boost
               5.7378883 = idf(docFreq=388, maxDocs=44421)
               0.014415426 = queryNorm
             0.71723604 = fieldWeight in 7842, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7378883 = idf(docFreq=388, maxDocs=44421)
               0.125 = fieldNorm(doc=7842)
         0.14596565 = weight(abstract_txt:input in 7842) [ClassicSimilarity], result of:
           0.14596565 = score(doc=7842,freq=1.0), product of:
             0.19110201 = queryWeight, product of:
               2.1695137 = boost
               6.110481 = idf(docFreq=267, maxDocs=44421)
               0.014415426 = queryNorm
             0.7638101 = fieldWeight in 7842, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.110481 = idf(docFreq=267, maxDocs=44421)
               0.125 = fieldNorm(doc=7842)
         0.1117355 = weight(abstract_txt:indexing in 7842) [ClassicSimilarity], result of:
           0.1117355 = score(doc=7842,freq=2.0), product of:
             0.14529344 = queryWeight, product of:
               2.3168526 = boost
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.014415426 = queryNorm
             0.7690333 = fieldWeight in 7842, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.125 = fieldNorm(doc=7842)
         0.14085686 = weight(abstract_txt:machine in 7842) [ClassicSimilarity], result of:
           0.14085686 = score(doc=7842,freq=1.0), product of:
             0.21362263 = queryWeight, product of:
               2.809306 = boost
               5.274979 = idf(docFreq=617, maxDocs=44421)
               0.014415426 = queryNorm
             0.6593724 = fieldWeight in 7842, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.274979 = idf(docFreq=617, maxDocs=44421)
               0.125 = fieldNorm(doc=7842)
         0.4501101 = weight(abstract_txt:aided in 7842) [ClassicSimilarity], result of:
           0.4501101 = score(doc=7842,freq=1.0), product of:
             0.4634552 = queryWeight, product of:
               4.137893 = boost
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.014415426 = queryNorm
             0.97120523 = fieldWeight in 7842, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.125 = fieldNorm(doc=7842)
       0.2 = coord(5/25)
   

5. Hlava, M.M.K.: Machine aided indexing (MAI) in a multilingual environment (1993) 0.16

   0.16136421 = sum of:
     0.16136421 = product of:
       0.6723509 = sum of:
         0.05053805 = weight(abstract_txt:base in 474) [ClassicSimilarity], result of:
           0.05053805 = score(doc=474,freq=2.0), product of:
             0.0812027 = queryWeight, product of:
               5.633042 = idf(docFreq=431, maxDocs=44421)
               0.014415426 = queryNorm
             0.62236905 = fieldWeight in 474, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.633042 = idf(docFreq=431, maxDocs=44421)
               0.078125 = fieldNorm(doc=474)
         0.09122853 = weight(abstract_txt:input in 474) [ClassicSimilarity], result of:
           0.09122853 = score(doc=474,freq=1.0), product of:
             0.19110201 = queryWeight, product of:
               2.1695137 = boost
               6.110481 = idf(docFreq=267, maxDocs=44421)
               0.014415426 = queryNorm
             0.47738132 = fieldWeight in 474, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.110481 = idf(docFreq=267, maxDocs=44421)
               0.078125 = fieldNorm(doc=474)
         0.06983469 = weight(abstract_txt:indexing in 474) [ClassicSimilarity], result of:
           0.06983469 = score(doc=474,freq=2.0), product of:
             0.14529344 = queryWeight, product of:
               2.3168526 = boost
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.014415426 = queryNorm
             0.48064584 = fieldWeight in 474, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.078125 = fieldNorm(doc=474)
         0.08803554 = weight(abstract_txt:machine in 474) [ClassicSimilarity], result of:
           0.08803554 = score(doc=474,freq=1.0), product of:
             0.21362263 = queryWeight, product of:
               2.809306 = boost
               5.274979 = idf(docFreq=617, maxDocs=44421)
               0.014415426 = queryNorm
             0.41210774 = fieldWeight in 474, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.274979 = idf(docFreq=617, maxDocs=44421)
               0.078125 = fieldNorm(doc=474)
         0.09139527 = weight(abstract_txt:text in 474) [ClassicSimilarity], result of:
           0.09139527 = score(doc=474,freq=3.0), product of:
             0.16714634 = queryWeight, product of:
               2.8694139 = boost
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.014415426 = queryNorm
             0.5467979 = fieldWeight in 474, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.078125 = fieldNorm(doc=474)
         0.2813188 = weight(abstract_txt:aided in 474) [ClassicSimilarity], result of:
           0.2813188 = score(doc=474,freq=1.0), product of:
             0.4634552 = queryWeight, product of:
               4.137893 = boost
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.014415426 = queryNorm
             0.6070033 = fieldWeight in 474, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.769642 = idf(docFreq=50, maxDocs=44421)
               0.078125 = fieldNorm(doc=474)
       0.24 = coord(6/25)