Document (#5517)

Author

Madelung, H.-O.

Title

Subject searching in the social sciences : a comparison of PRECIS and KWIC indexes indexes to newspaper articles

Source

Journal of librarianship. 14(1982), S.45-58

Year

1982

Abstract

89 articles from a small, Danish left-wing newspaper were indexed by PRECIS and KWIC. The articles cover a wide range of social science subjects. Controlled test searches in both indexes were carried out by 20 students of library science. The results obtained from this small-scale retrieval test were evaluated by a chi-square test. The PRECIS index led to more correct answers and fewer wrong answers than the KWIC index, i.e. it had both better recall and greater precision. Furthermore, the students were more confident in their judgement of the relevance of retrieved articles in the PRECIS index than in the KWIC index; and they generally favoured the PRECIS index in the subjective judgement they were asked to make

Theme

Preserved Context Index System (PRECIS)
Retrievalstudien

Form

Zeitungen

Aid

PRECIS
KWIC

Similar documents (content)

1. Austin, D.: PRECIS (2009) 0.44

   0.44085568 = sum of:
     0.44085568 = product of:
       3.6737974 = sum of:
         0.015993064 = weight(abstract_txt:science in 1985) [ClassicSimilarity], result of:
           0.015993064 = score(doc=1985,freq=1.0), product of:
             0.053163666 = queryWeight, product of:
               1.0837029 = boost
               3.850585 = idf(docFreq=2567, maxDocs=44421)
               0.012740251 = queryNorm
             0.30082697 = fieldWeight in 1985, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.850585 = idf(docFreq=2567, maxDocs=44421)
               0.078125 = fieldNorm(doc=1985)
         0.10612161 = weight(abstract_txt:index in 1985) [ClassicSimilarity], result of:
           0.10612161 = score(doc=1985,freq=2.0), product of:
             0.20222415 = queryWeight, product of:
               3.3418682 = boost
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.012740251 = queryNorm
             0.52477217 = fieldWeight in 1985, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.078125 = fieldNorm(doc=1985)
         3.5516827 = weight(title_txt:precis in 1985) [ClassicSimilarity], result of:
           3.5516827 = score(doc=1985,freq=1.0), product of:
             0.48356694 = queryWeight, product of:
               5.167745 = boost
               7.344759 = idf(docFreq=77, maxDocs=44421)
               0.012740251 = queryNorm
             7.344759 = fieldWeight in 1985, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.344759 = idf(docFreq=77, maxDocs=44421)
               1.0 = fieldNorm(doc=1985)
       0.12 = coord(3/25)
   

2. Biswas, S.C.; Smith, F.: Efficiency and effectiveness of deep structure based indexing languages : PRECIS vs. DSIS (1991) 0.36

   0.36453804 = sum of:
     0.36453804 = product of:
       1.1391814 = sum of:
         0.010811023 = weight(abstract_txt:both in 2186) [ClassicSimilarity], result of:
           0.010811023 = score(doc=2186,freq=1.0), product of:
             0.051940527 = queryWeight, product of:
               1.071164 = boost
               3.8060317 = idf(docFreq=2684, maxDocs=44421)
               0.012740251 = queryNorm
             0.20814236 = fieldWeight in 2186, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.8060317 = idf(docFreq=2684, maxDocs=44421)
               0.0546875 = fieldNorm(doc=2186)
         0.011195145 = weight(abstract_txt:science in 2186) [ClassicSimilarity], result of:
           0.011195145 = score(doc=2186,freq=1.0), product of:
             0.053163666 = queryWeight, product of:
               1.0837029 = boost
               3.850585 = idf(docFreq=2567, maxDocs=44421)
               0.012740251 = queryNorm
             0.21057886 = fieldWeight in 2186, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.850585 = idf(docFreq=2567, maxDocs=44421)
               0.0546875 = fieldNorm(doc=2186)
         0.016358 = weight(abstract_txt:than in 2186) [ClassicSimilarity], result of:
           0.016358 = score(doc=2186,freq=2.0), product of:
             0.054334033 = queryWeight, product of:
               1.0955665 = boost
               3.8927383 = idf(docFreq=2461, maxDocs=44421)
               0.012740251 = queryNorm
             0.3010636 = fieldWeight in 2186, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.8927383 = idf(docFreq=2461, maxDocs=44421)
               0.0546875 = fieldNorm(doc=2186)
         0.014560449 = weight(abstract_txt:social in 2186) [ClassicSimilarity], result of:
           0.014560449 = score(doc=2186,freq=1.0), product of:
             0.063344896 = queryWeight, product of:
               1.1829288 = boost
               4.2031517 = idf(docFreq=1804, maxDocs=44421)
               0.012740251 = queryNorm
             0.22985986 = fieldWeight in 2186, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.2031517 = idf(docFreq=1804, maxDocs=44421)
               0.0546875 = fieldNorm(doc=2186)
         0.037791107 = weight(abstract_txt:test in 2186) [ClassicSimilarity], result of:
           0.037791107 = score(doc=2186,freq=1.0), product of:
             0.13694683 = queryWeight, product of:
               2.1302197 = boost
               5.046027 = idf(docFreq=776, maxDocs=44421)
               0.012740251 = queryNorm
             0.2759546 = fieldWeight in 2186, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.046027 = idf(docFreq=776, maxDocs=44421)
               0.0546875 = fieldNorm(doc=2186)
         0.055489916 = weight(abstract_txt:indexes in 2186) [ClassicSimilarity], result of:
           0.055489916 = score(doc=2186,freq=1.0), product of:
             0.17691647 = queryWeight, product of:
               2.4212105 = boost
               5.735321 = idf(docFreq=389, maxDocs=44421)
               0.012740251 = queryNorm
             0.31365037 = fieldWeight in 2186, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.735321 = idf(docFreq=389, maxDocs=44421)
               0.0546875 = fieldNorm(doc=2186)
         0.10505503 = weight(abstract_txt:index in 2186) [ClassicSimilarity], result of:
           0.10505503 = score(doc=2186,freq=4.0), product of:
             0.20222415 = queryWeight, product of:
               3.3418682 = boost
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.012740251 = queryNorm
             0.51949793 = fieldWeight in 2186, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.0546875 = fieldNorm(doc=2186)
         0.8879207 = weight(title_txt:precis in 2186) [ClassicSimilarity], result of:
           0.8879207 = score(doc=2186,freq=1.0), product of:
             0.48356694 = queryWeight, product of:
               5.167745 = boost
               7.344759 = idf(docFreq=77, maxDocs=44421)
               0.012740251 = queryNorm
             1.8361897 = fieldWeight in 2186, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.344759 = idf(docFreq=77, maxDocs=44421)
               0.25 = fieldNorm(doc=2186)
       0.32 = coord(8/25)
   

3. Austin, D.; Digger, J.A.: PRECIS: The Preserved Context Index System (1985) 0.36

   0.3619707 = sum of:
     0.3619707 = product of:
       1.5082113 = sum of:
         0.007996532 = weight(abstract_txt:science in 4652) [ClassicSimilarity], result of:
           0.007996532 = score(doc=4652,freq=1.0), product of:
             0.053163666 = queryWeight, product of:
               1.0837029 = boost
               3.850585 = idf(docFreq=2567, maxDocs=44421)
               0.012740251 = queryNorm
             0.15041348 = fieldWeight in 4652, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.850585 = idf(docFreq=2567, maxDocs=44421)
               0.0390625 = fieldNorm(doc=4652)
         0.008262038 = weight(abstract_txt:than in 4652) [ClassicSimilarity], result of:
           0.008262038 = score(doc=4652,freq=1.0), product of:
             0.054334033 = queryWeight, product of:
               1.0955665 = boost
               3.8927383 = idf(docFreq=2461, maxDocs=44421)
               0.012740251 = queryNorm
             0.15206009 = fieldWeight in 4652, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.8927383 = idf(docFreq=2461, maxDocs=44421)
               0.0390625 = fieldNorm(doc=4652)
         0.033621818 = weight(abstract_txt:danish in 4652) [ClassicSimilarity], result of:
           0.033621818 = score(doc=4652,freq=1.0), product of:
             0.109922 = queryWeight, product of:
               1.1018693 = boost
               7.8302665 = idf(docFreq=47, maxDocs=44421)
               0.012740251 = queryNorm
             0.3058698 = fieldWeight in 4652, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.8302665 = idf(docFreq=47, maxDocs=44421)
               0.0390625 = fieldNorm(doc=4652)
         0.034545895 = weight(abstract_txt:were in 4652) [ClassicSimilarity], result of:
           0.034545895 = score(doc=4652,freq=4.0), product of:
             0.12056968 = queryWeight, product of:
               2.5804286 = boost
               3.6674848 = idf(docFreq=3083, maxDocs=44421)
               0.012740251 = queryNorm
             0.28652224 = fieldWeight in 4652, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.6674848 = idf(docFreq=3083, maxDocs=44421)
               0.0390625 = fieldNorm(doc=4652)
         0.09190401 = weight(abstract_txt:index in 4652) [ClassicSimilarity], result of:
           0.09190401 = score(doc=4652,freq=6.0), product of:
             0.20222415 = queryWeight, product of:
               3.3418682 = boost
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.012740251 = queryNorm
             0.45446604 = fieldWeight in 4652, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.0390625 = fieldNorm(doc=4652)
         1.3318809 = weight(title_txt:precis in 4652) [ClassicSimilarity], result of:
           1.3318809 = score(doc=4652,freq=1.0), product of:
             0.48356694 = queryWeight, product of:
               5.167745 = boost
               7.344759 = idf(docFreq=77, maxDocs=44421)
               0.012740251 = queryNorm
             2.7542846 = fieldWeight in 4652, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.344759 = idf(docFreq=77, maxDocs=44421)
               0.375 = fieldNorm(doc=4652)
       0.24 = coord(6/25)
   

4. Weintraub, D.K.: ¬An extended review of PRECIS (1979) 0.29

   0.2947247 = sum of:
     0.2947247 = product of:
       1.8420295 = sum of:
         0.016524076 = weight(abstract_txt:than in 1196) [ClassicSimilarity], result of:
           0.016524076 = score(doc=1196,freq=1.0), product of:
             0.054334033 = queryWeight, product of:
               1.0955665 = boost
               3.8927383 = idf(docFreq=2461, maxDocs=44421)
               0.012740251 = queryNorm
             0.30412018 = fieldWeight in 1196, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.8927383 = idf(docFreq=2461, maxDocs=44421)
               0.078125 = fieldNorm(doc=1196)
         0.1966048 = weight(abstract_txt:judgement in 1196) [ClassicSimilarity], result of:
           0.1966048 = score(doc=1196,freq=2.0), product of:
             0.22475702 = queryWeight, product of:
               2.228227 = boost
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.012740251 = queryNorm
             0.8747438 = fieldWeight in 1196, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.078125 = fieldNorm(doc=1196)
         0.075039305 = weight(abstract_txt:index in 1196) [ClassicSimilarity], result of:
           0.075039305 = score(doc=1196,freq=1.0), product of:
             0.20222415 = queryWeight, product of:
               3.3418682 = boost
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.012740251 = queryNorm
             0.37106994 = fieldWeight in 1196, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.078125 = fieldNorm(doc=1196)
         1.5538613 = weight(title_txt:precis in 1196) [ClassicSimilarity], result of:
           1.5538613 = score(doc=1196,freq=1.0), product of:
             0.48356694 = queryWeight, product of:
               5.167745 = boost
               7.344759 = idf(docFreq=77, maxDocs=44421)
               0.012740251 = queryNorm
             3.2133322 = fieldWeight in 1196, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.344759 = idf(docFreq=77, maxDocs=44421)
               0.4375 = fieldNorm(doc=1196)
       0.16 = coord(4/25)
   

5. Austin, D.: PRECIS in a multilingual context : Pt.1: PRECIS: an overview (1976) 0.28

   0.28369603 = sum of:
     0.28369603 = product of:
       1.7731001 = sum of:
         0.067243636 = weight(abstract_txt:danish in 1983) [ClassicSimilarity], result of:
           0.067243636 = score(doc=1983,freq=1.0), product of:
             0.109922 = queryWeight, product of:
               1.1018693 = boost
               7.8302665 = idf(docFreq=47, maxDocs=44421)
               0.012740251 = queryNorm
             0.6117396 = fieldWeight in 1983, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.8302665 = idf(docFreq=47, maxDocs=44421)
               0.078125 = fieldNorm(doc=1983)
         0.061180543 = weight(abstract_txt:articles in 1983) [ClassicSimilarity], result of:
           0.061180543 = score(doc=1983,freq=1.0), product of:
             0.16383727 = queryWeight, product of:
               2.6904452 = boost
               4.7798095 = idf(docFreq=1013, maxDocs=44421)
               0.012740251 = queryNorm
             0.37342262 = fieldWeight in 1983, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7798095 = idf(docFreq=1013, maxDocs=44421)
               0.078125 = fieldNorm(doc=1983)
         0.075039305 = weight(abstract_txt:index in 1983) [ClassicSimilarity], result of:
           0.075039305 = score(doc=1983,freq=1.0), product of:
             0.20222415 = queryWeight, product of:
               3.3418682 = boost
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.012740251 = queryNorm
             0.37106994 = fieldWeight in 1983, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7496953 = idf(docFreq=1044, maxDocs=44421)
               0.078125 = fieldNorm(doc=1983)
         1.5696367 = weight(title_txt:precis in 1983) [ClassicSimilarity], result of:
           1.5696367 = score(doc=1983,freq=2.0), product of:
             0.48356694 = queryWeight, product of:
               5.167745 = boost
               7.344759 = idf(docFreq=77, maxDocs=44421)
               0.012740251 = queryNorm
             3.2459555 = fieldWeight in 1983, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.344759 = idf(docFreq=77, maxDocs=44421)
               0.3125 = fieldNorm(doc=1983)
       0.16 = coord(4/25)