Document (#22477)

Editor

Voorhees, E.M. u. D.K. Harman

Title

¬The Sixth Text Retrieval Conference (TREC-6)

Imprint

Gaithersburgh, MD : National Institute of Standards, Information Technology Laboratory

Year

1998

Pages

xxx S

Series

NIST special publication; 500-240

Abstract

Proceedings of the 6th TREC-confrerence held in Gaithersburgh, Maryland, Nov 19-21, 1997. Aim of the conference was discussion on retrieval techniques for large test collections. 51 research groups used different techniques, such as automated thesauri, term weighting, natural language techniques, relevance feedback and advanced pattern matching, for information retrieval from the same large database. This procedure makes it possible to compare the results. The proceedings include papers, tables of the system results, and brief system descriptions including timing and storage information

Theme

Retrievalstudien

Object

TREC

Similar documents (content)

1. ¬The Fifth Text Retrieval Conference (TREC-5) (1997) 2.44

   2.438988 = sum of:
     2.438988 = product of:
       2.7715771 = sum of:
         0.07742167 = weight(abstract_txt:automated in 3087) [ClassicSimilarity], result of:
           0.07742167 = score(doc=3087,freq=1.0), product of:
             0.1263279 = queryWeight, product of:
               5.6033173 = idf(docFreq=442, maxDocs=44218)
               0.0225452 = queryNorm
             0.6128628 = fieldWeight in 3087, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6033173 = idf(docFreq=442, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.07789315 = weight(abstract_txt:compare in 3087) [ClassicSimilarity], result of:
           0.07789315 = score(doc=3087,freq=1.0), product of:
             0.12684026 = queryWeight, product of:
               1.0020258 = boost
               5.6146684 = idf(docFreq=437, maxDocs=44218)
               0.0225452 = queryNorm
             0.61410433 = fieldWeight in 3087, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6146684 = idf(docFreq=437, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.07885833 = weight(abstract_txt:brief in 3087) [ClassicSimilarity], result of:
           0.07885833 = score(doc=3087,freq=1.0), product of:
             0.1278859 = queryWeight, product of:
               1.0061475 = boost
               5.637764 = idf(docFreq=427, maxDocs=44218)
               0.0225452 = queryNorm
             0.61663043 = fieldWeight in 3087, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.637764 = idf(docFreq=427, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.08773451 = weight(abstract_txt:storage in 3087) [ClassicSimilarity], result of:
           0.08773451 = score(doc=3087,freq=1.0), product of:
             0.13731076 = queryWeight, product of:
               1.0425638 = boost
               5.8418155 = idf(docFreq=348, maxDocs=44218)
               0.0225452 = queryNorm
             0.63894856 = fieldWeight in 3087, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8418155 = idf(docFreq=348, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.088916875 = weight(abstract_txt:advanced in 3087) [ClassicSimilarity], result of:
           0.088916875 = score(doc=3087,freq=1.0), product of:
             0.13854165 = queryWeight, product of:
               1.0472263 = boost
               5.8679414 = idf(docFreq=339, maxDocs=44218)
               0.0225452 = queryNorm
             0.64180607 = fieldWeight in 3087, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8679414 = idf(docFreq=339, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.09141259 = weight(abstract_txt:held in 3087) [ClassicSimilarity], result of:
           0.09141259 = score(doc=3087,freq=1.0), product of:
             0.14112207 = queryWeight, product of:
               1.0569339 = boost
               5.9223356 = idf(docFreq=321, maxDocs=44218)
               0.0225452 = queryNorm
             0.64775544 = fieldWeight in 3087, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9223356 = idf(docFreq=321, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.09141259 = weight(abstract_txt:descriptions in 3087) [ClassicSimilarity], result of:
           0.09141259 = score(doc=3087,freq=1.0), product of:
             0.14112207 = queryWeight, product of:
               1.0569339 = boost
               5.9223356 = idf(docFreq=321, maxDocs=44218)
               0.0225452 = queryNorm
             0.64775544 = fieldWeight in 3087, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9223356 = idf(docFreq=321, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.09243412 = weight(abstract_txt:feedback in 3087) [ClassicSimilarity], result of:
           0.09243412 = score(doc=3087,freq=1.0), product of:
             0.14217147 = queryWeight, product of:
               1.0608563 = boost
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.0225452 = queryNorm
             0.6501594 = fieldWeight in 3087, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.09735171 = weight(abstract_txt:matching in 3087) [ClassicSimilarity], result of:
           0.09735171 = score(doc=3087,freq=1.0), product of:
             0.14717023 = queryWeight, product of:
               1.0793451 = boost
               6.047913 = idf(docFreq=283, maxDocs=44218)
               0.0225452 = queryNorm
             0.6614905 = fieldWeight in 3087, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.047913 = idf(docFreq=283, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.1072263 = weight(abstract_txt:pattern in 3087) [ClassicSimilarity], result of:
           0.1072263 = score(doc=3087,freq=1.0), product of:
             0.15696101 = queryWeight, product of:
               1.1146698 = boost
               6.2458487 = idf(docFreq=232, maxDocs=44218)
               0.0225452 = queryNorm
             0.6831397 = fieldWeight in 3087, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.2458487 = idf(docFreq=232, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.12565343 = weight(abstract_txt:procedure in 3087) [ClassicSimilarity], result of:
           0.12565343 = score(doc=3087,freq=1.0), product of:
             0.17446454 = queryWeight, product of:
               1.1751788 = boost
               6.5848994 = idf(docFreq=165, maxDocs=44218)
               0.0225452 = queryNorm
             0.72022337 = fieldWeight in 3087, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.5848994 = idf(docFreq=165, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.13115345 = weight(abstract_txt:tables in 3087) [ClassicSimilarity], result of:
           0.13115345 = score(doc=3087,freq=1.0), product of:
             0.17951913 = queryWeight, product of:
               1.1920809 = boost
               6.6796074 = idf(docFreq=150, maxDocs=44218)
               0.0225452 = queryNorm
             0.73058206 = fieldWeight in 3087, 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=3087)
         0.047736865 = weight(abstract_txt:system in 3087) [ClassicSimilarity], result of:
           0.047736865 = score(doc=3087,freq=2.0), product of:
             0.09151526 = queryWeight, product of:
               1.2036829 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.0225452 = queryNorm
             0.52162737 = fieldWeight in 3087, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.05256736 = weight(abstract_txt:results in 3087) [ClassicSimilarity], result of:
           0.05256736 = score(doc=3087,freq=2.0), product of:
             0.09758918 = queryWeight, product of:
               1.2429858 = boost
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.0225452 = queryNorm
             0.5386597 = fieldWeight in 3087, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.14955205 = weight(abstract_txt:weighting in 3087) [ClassicSimilarity], result of:
           0.14955205 = score(doc=3087,freq=1.0), product of:
             0.19593823 = queryWeight, product of:
               1.245403 = boost
               6.9783883 = idf(docFreq=111, maxDocs=44218)
               0.0225452 = queryNorm
             0.7632612 = fieldWeight in 3087, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.9783883 = idf(docFreq=111, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.23749067 = weight(abstract_txt:maryland in 3087) [ClassicSimilarity], result of:
           0.23749067 = score(doc=3087,freq=1.0), product of:
             0.26669934 = queryWeight, product of:
               1.4529856 = boost
               8.14154 = idf(docFreq=34, maxDocs=44218)
               0.0225452 = queryNorm
             0.8904809 = fieldWeight in 3087, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.14154 = idf(docFreq=34, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.10998884 = weight(abstract_txt:large in 3087) [ClassicSimilarity], result of:
           0.10998884 = score(doc=3087,freq=2.0), product of:
             0.1596455 = queryWeight, product of:
               1.5898044 = boost
               4.454089 = idf(docFreq=1397, maxDocs=44218)
               0.0225452 = queryNorm
             0.68895674 = fieldWeight in 3087, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.454089 = idf(docFreq=1397, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.31962264 = weight(abstract_txt:timing in 3087) [ClassicSimilarity], result of:
           0.31962264 = score(doc=3087,freq=1.0), product of:
             0.32509923 = queryWeight, product of:
               1.6041993 = boost
               8.988837 = idf(docFreq=14, maxDocs=44218)
               0.0225452 = queryNorm
             0.98315406 = fieldWeight in 3087, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.988837 = idf(docFreq=14, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.07835737 = weight(abstract_txt:retrieval in 3087) [ClassicSimilarity], result of:
           0.07835737 = score(doc=3087,freq=2.0), product of:
             0.14577216 = queryWeight, product of:
               1.8605796 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.0225452 = queryNorm
             0.53753316 = fieldWeight in 3087, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.15156491 = weight(abstract_txt:conference in 3087) [ClassicSimilarity], result of:
           0.15156491 = score(doc=3087,freq=1.0), product of:
             0.24907684 = queryWeight, product of:
               1.985784 = boost
               5.563489 = idf(docFreq=460, maxDocs=44218)
               0.0225452 = queryNorm
             0.6085066 = fieldWeight in 3087, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.563489 = idf(docFreq=460, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.26467818 = weight(abstract_txt:trec in 3087) [ClassicSimilarity], result of:
           0.26467818 = score(doc=3087,freq=1.0), product of:
             0.36119884 = queryWeight, product of:
               2.3913245 = boost
               6.699675 = idf(docFreq=147, maxDocs=44218)
               0.0225452 = queryNorm
             0.73277694 = fieldWeight in 3087, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.699675 = idf(docFreq=147, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
         0.21254955 = weight(abstract_txt:techniques in 3087) [ClassicSimilarity], result of:
           0.21254955 = score(doc=3087,freq=3.0), product of:
             0.24768385 = queryWeight, product of:
               2.4252684 = boost
               4.5298495 = idf(docFreq=1295, maxDocs=44218)
               0.0225452 = queryNorm
             0.8581486 = fieldWeight in 3087, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.5298495 = idf(docFreq=1295, maxDocs=44218)
               0.109375 = fieldNorm(doc=3087)
       0.88 = coord(22/25)
   

2. ¬The Fourth Text Retrieval Conference (TREC-4) (1996) 2.00

   2.0043705 = sum of:
     2.0043705 = product of:
       2.5054631 = sum of:
         0.07789315 = weight(abstract_txt:compare in 7521) [ClassicSimilarity], result of:
           0.07789315 = score(doc=7521,freq=1.0), product of:
             0.12684026 = queryWeight, product of:
               1.0020258 = boost
               5.6146684 = idf(docFreq=437, maxDocs=44218)
               0.0225452 = queryNorm
             0.61410433 = fieldWeight in 7521, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6146684 = idf(docFreq=437, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.07885833 = weight(abstract_txt:brief in 7521) [ClassicSimilarity], result of:
           0.07885833 = score(doc=7521,freq=1.0), product of:
             0.1278859 = queryWeight, product of:
               1.0061475 = boost
               5.637764 = idf(docFreq=427, maxDocs=44218)
               0.0225452 = queryNorm
             0.61663043 = fieldWeight in 7521, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.637764 = idf(docFreq=427, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.08773451 = weight(abstract_txt:storage in 7521) [ClassicSimilarity], result of:
           0.08773451 = score(doc=7521,freq=1.0), product of:
             0.13731076 = queryWeight, product of:
               1.0425638 = boost
               5.8418155 = idf(docFreq=348, maxDocs=44218)
               0.0225452 = queryNorm
             0.63894856 = fieldWeight in 7521, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8418155 = idf(docFreq=348, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.088916875 = weight(abstract_txt:advanced in 7521) [ClassicSimilarity], result of:
           0.088916875 = score(doc=7521,freq=1.0), product of:
             0.13854165 = queryWeight, product of:
               1.0472263 = boost
               5.8679414 = idf(docFreq=339, maxDocs=44218)
               0.0225452 = queryNorm
             0.64180607 = fieldWeight in 7521, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8679414 = idf(docFreq=339, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.09141259 = weight(abstract_txt:held in 7521) [ClassicSimilarity], result of:
           0.09141259 = score(doc=7521,freq=1.0), product of:
             0.14112207 = queryWeight, product of:
               1.0569339 = boost
               5.9223356 = idf(docFreq=321, maxDocs=44218)
               0.0225452 = queryNorm
             0.64775544 = fieldWeight in 7521, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9223356 = idf(docFreq=321, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.09141259 = weight(abstract_txt:descriptions in 7521) [ClassicSimilarity], result of:
           0.09141259 = score(doc=7521,freq=1.0), product of:
             0.14112207 = queryWeight, product of:
               1.0569339 = boost
               5.9223356 = idf(docFreq=321, maxDocs=44218)
               0.0225452 = queryNorm
             0.64775544 = fieldWeight in 7521, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9223356 = idf(docFreq=321, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.09243412 = weight(abstract_txt:feedback in 7521) [ClassicSimilarity], result of:
           0.09243412 = score(doc=7521,freq=1.0), product of:
             0.14217147 = queryWeight, product of:
               1.0608563 = boost
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.0225452 = queryNorm
             0.6501594 = fieldWeight in 7521, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.09735171 = weight(abstract_txt:matching in 7521) [ClassicSimilarity], result of:
           0.09735171 = score(doc=7521,freq=1.0), product of:
             0.14717023 = queryWeight, product of:
               1.0793451 = boost
               6.047913 = idf(docFreq=283, maxDocs=44218)
               0.0225452 = queryNorm
             0.6614905 = fieldWeight in 7521, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.047913 = idf(docFreq=283, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.1072263 = weight(abstract_txt:pattern in 7521) [ClassicSimilarity], result of:
           0.1072263 = score(doc=7521,freq=1.0), product of:
             0.15696101 = queryWeight, product of:
               1.1146698 = boost
               6.2458487 = idf(docFreq=232, maxDocs=44218)
               0.0225452 = queryNorm
             0.6831397 = fieldWeight in 7521, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.2458487 = idf(docFreq=232, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.12565343 = weight(abstract_txt:procedure in 7521) [ClassicSimilarity], result of:
           0.12565343 = score(doc=7521,freq=1.0), product of:
             0.17446454 = queryWeight, product of:
               1.1751788 = boost
               6.5848994 = idf(docFreq=165, maxDocs=44218)
               0.0225452 = queryNorm
             0.72022337 = fieldWeight in 7521, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.5848994 = idf(docFreq=165, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.13115345 = weight(abstract_txt:tables in 7521) [ClassicSimilarity], result of:
           0.13115345 = score(doc=7521,freq=1.0), product of:
             0.17951913 = queryWeight, product of:
               1.1920809 = boost
               6.6796074 = idf(docFreq=150, maxDocs=44218)
               0.0225452 = queryNorm
             0.73058206 = fieldWeight in 7521, 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=7521)
         0.03375506 = weight(abstract_txt:system in 7521) [ClassicSimilarity], result of:
           0.03375506 = score(doc=7521,freq=1.0), product of:
             0.09151526 = queryWeight, product of:
               1.2036829 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.0225452 = queryNorm
             0.36884624 = fieldWeight in 7521, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.05256736 = weight(abstract_txt:results in 7521) [ClassicSimilarity], result of:
           0.05256736 = score(doc=7521,freq=2.0), product of:
             0.09758918 = queryWeight, product of:
               1.2429858 = boost
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.0225452 = queryNorm
             0.5386597 = fieldWeight in 7521, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.14955205 = weight(abstract_txt:weighting in 7521) [ClassicSimilarity], result of:
           0.14955205 = score(doc=7521,freq=1.0), product of:
             0.19593823 = queryWeight, product of:
               1.245403 = boost
               6.9783883 = idf(docFreq=111, maxDocs=44218)
               0.0225452 = queryNorm
             0.7632612 = fieldWeight in 7521, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.9783883 = idf(docFreq=111, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.10998884 = weight(abstract_txt:large in 7521) [ClassicSimilarity], result of:
           0.10998884 = score(doc=7521,freq=2.0), product of:
             0.1596455 = queryWeight, product of:
               1.5898044 = boost
               4.454089 = idf(docFreq=1397, maxDocs=44218)
               0.0225452 = queryNorm
             0.68895674 = fieldWeight in 7521, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.454089 = idf(docFreq=1397, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.31962264 = weight(abstract_txt:timing in 7521) [ClassicSimilarity], result of:
           0.31962264 = score(doc=7521,freq=1.0), product of:
             0.32509923 = queryWeight, product of:
               1.6041993 = boost
               8.988837 = idf(docFreq=14, maxDocs=44218)
               0.0225452 = queryNorm
             0.98315406 = fieldWeight in 7521, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.988837 = idf(docFreq=14, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.07835737 = weight(abstract_txt:retrieval in 7521) [ClassicSimilarity], result of:
           0.07835737 = score(doc=7521,freq=2.0), product of:
             0.14577216 = queryWeight, product of:
               1.8605796 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.0225452 = queryNorm
             0.53753316 = fieldWeight in 7521, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.21434514 = weight(abstract_txt:conference in 7521) [ClassicSimilarity], result of:
           0.21434514 = score(doc=7521,freq=2.0), product of:
             0.24907684 = queryWeight, product of:
               1.985784 = boost
               5.563489 = idf(docFreq=460, maxDocs=44218)
               0.0225452 = queryNorm
             0.8605583 = fieldWeight in 7521, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.563489 = idf(docFreq=460, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.26467818 = weight(abstract_txt:trec in 7521) [ClassicSimilarity], result of:
           0.26467818 = score(doc=7521,freq=1.0), product of:
             0.36119884 = queryWeight, product of:
               2.3913245 = boost
               6.699675 = idf(docFreq=147, maxDocs=44218)
               0.0225452 = queryNorm
             0.73277694 = fieldWeight in 7521, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.699675 = idf(docFreq=147, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
         0.21254955 = weight(abstract_txt:techniques in 7521) [ClassicSimilarity], result of:
           0.21254955 = score(doc=7521,freq=3.0), product of:
             0.24768385 = queryWeight, product of:
               2.4252684 = boost
               4.5298495 = idf(docFreq=1295, maxDocs=44218)
               0.0225452 = queryNorm
             0.8581486 = fieldWeight in 7521, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.5298495 = idf(docFreq=1295, maxDocs=44218)
               0.109375 = fieldNorm(doc=7521)
       0.8 = coord(20/25)
   

3. Harman, D.: Overview of the first Text Retrieval Conference (1993) 0.72

   0.7228936 = sum of:
     0.7228936 = product of:
       1.39018 = sum of:
         0.06676557 = weight(abstract_txt:compare in 548) [ClassicSimilarity], result of:
           0.06676557 = score(doc=548,freq=1.0), product of:
             0.12684026 = queryWeight, product of:
               1.0020258 = boost
               5.6146684 = idf(docFreq=437, maxDocs=44218)
               0.0225452 = queryNorm
             0.5263752 = fieldWeight in 548, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6146684 = idf(docFreq=437, maxDocs=44218)
               0.09375 = fieldNorm(doc=548)
         0.07621447 = weight(abstract_txt:advanced in 548) [ClassicSimilarity], result of:
           0.07621447 = score(doc=548,freq=1.0), product of:
             0.13854165 = queryWeight, product of:
               1.0472263 = boost
               5.8679414 = idf(docFreq=339, maxDocs=44218)
               0.0225452 = queryNorm
             0.5501195 = fieldWeight in 548, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8679414 = idf(docFreq=339, maxDocs=44218)
               0.09375 = fieldNorm(doc=548)
         0.07835364 = weight(abstract_txt:held in 548) [ClassicSimilarity], result of:
           0.07835364 = score(doc=548,freq=1.0), product of:
             0.14112207 = queryWeight, product of:
               1.0569339 = boost
               5.9223356 = idf(docFreq=321, maxDocs=44218)
               0.0225452 = queryNorm
             0.55521894 = fieldWeight in 548, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9223356 = idf(docFreq=321, maxDocs=44218)
               0.09375 = fieldNorm(doc=548)
         0.07922924 = weight(abstract_txt:feedback in 548) [ClassicSimilarity], result of:
           0.07922924 = score(doc=548,freq=1.0), product of:
             0.14217147 = queryWeight, product of:
               1.0608563 = boost
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.0225452 = queryNorm
             0.55727947 = fieldWeight in 548, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.09375 = fieldNorm(doc=548)
         0.08344433 = weight(abstract_txt:matching in 548) [ClassicSimilarity], result of:
           0.08344433 = score(doc=548,freq=1.0), product of:
             0.14717023 = queryWeight, product of:
               1.0793451 = boost
               6.047913 = idf(docFreq=283, maxDocs=44218)
               0.0225452 = queryNorm
             0.56699187 = fieldWeight in 548, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.047913 = idf(docFreq=283, maxDocs=44218)
               0.09375 = fieldNorm(doc=548)
         0.09190825 = weight(abstract_txt:pattern in 548) [ClassicSimilarity], result of:
           0.09190825 = score(doc=548,freq=1.0), product of:
             0.15696101 = queryWeight, product of:
               1.1146698 = boost
               6.2458487 = idf(docFreq=232, maxDocs=44218)
               0.0225452 = queryNorm
             0.5855483 = fieldWeight in 548, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.2458487 = idf(docFreq=232, maxDocs=44218)
               0.09375 = fieldNorm(doc=548)
         0.03186063 = weight(abstract_txt:results in 548) [ClassicSimilarity], result of:
           0.03186063 = score(doc=548,freq=1.0), product of:
             0.09758918 = queryWeight, product of:
               1.2429858 = boost
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.0225452 = queryNorm
             0.32647708 = fieldWeight in 548, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.09375 = fieldNorm(doc=548)
         0.12818748 = weight(abstract_txt:weighting in 548) [ClassicSimilarity], result of:
           0.12818748 = score(doc=548,freq=1.0), product of:
             0.19593823 = queryWeight, product of:
               1.245403 = boost
               6.9783883 = idf(docFreq=111, maxDocs=44218)
               0.0225452 = queryNorm
             0.6542239 = fieldWeight in 548, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.9783883 = idf(docFreq=111, maxDocs=44218)
               0.09375 = fieldNorm(doc=548)
         0.094276145 = weight(abstract_txt:large in 548) [ClassicSimilarity], result of:
           0.094276145 = score(doc=548,freq=2.0), product of:
             0.1596455 = queryWeight, product of:
               1.5898044 = boost
               4.454089 = idf(docFreq=1397, maxDocs=44218)
               0.0225452 = queryNorm
             0.5905343 = fieldWeight in 548, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.454089 = idf(docFreq=1397, maxDocs=44218)
               0.09375 = fieldNorm(doc=548)
         0.06716346 = weight(abstract_txt:retrieval in 548) [ClassicSimilarity], result of:
           0.06716346 = score(doc=548,freq=2.0), product of:
             0.14577216 = queryWeight, product of:
               1.8605796 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.0225452 = queryNorm
             0.4607427 = fieldWeight in 548, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.09375 = fieldNorm(doc=548)
         0.1837244 = weight(abstract_txt:conference in 548) [ClassicSimilarity], result of:
           0.1837244 = score(doc=548,freq=2.0), product of:
             0.24907684 = queryWeight, product of:
               1.985784 = boost
               5.563489 = idf(docFreq=460, maxDocs=44218)
               0.0225452 = queryNorm
             0.73762137 = fieldWeight in 548, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.563489 = idf(docFreq=460, maxDocs=44218)
               0.09375 = fieldNorm(doc=548)
         0.22686702 = weight(abstract_txt:trec in 548) [ClassicSimilarity], result of:
           0.22686702 = score(doc=548,freq=1.0), product of:
             0.36119884 = queryWeight, product of:
               2.3913245 = boost
               6.699675 = idf(docFreq=147, maxDocs=44218)
               0.0225452 = queryNorm
             0.62809455 = fieldWeight in 548, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.699675 = idf(docFreq=147, maxDocs=44218)
               0.09375 = fieldNorm(doc=548)
         0.18218532 = weight(abstract_txt:techniques in 548) [ClassicSimilarity], result of:
           0.18218532 = score(doc=548,freq=3.0), product of:
             0.24768385 = queryWeight, product of:
               2.4252684 = boost
               4.5298495 = idf(docFreq=1295, maxDocs=44218)
               0.0225452 = queryNorm
             0.7355559 = fieldWeight in 548, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.5298495 = idf(docFreq=1295, maxDocs=44218)
               0.09375 = fieldNorm(doc=548)
       0.52 = coord(13/25)
   

4. Harman, D.: ¬The Text REtrieval Conferences (TRECs) : providing a test-bed for information retrieval systems (1998) 0.64

   0.64489126 = sum of:
     0.64489126 = product of:
       1.465662 = sum of:
         0.107783526 = weight(abstract_txt:advanced in 1314) [ClassicSimilarity], result of:
           0.107783526 = score(doc=1314,freq=2.0), product of:
             0.13854165 = queryWeight, product of:
               1.0472263 = boost
               5.8679414 = idf(docFreq=339, maxDocs=44218)
               0.0225452 = queryNorm
             0.7779864 = fieldWeight in 1314, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.8679414 = idf(docFreq=339, maxDocs=44218)
               0.09375 = fieldNorm(doc=1314)
         0.07922924 = weight(abstract_txt:feedback in 1314) [ClassicSimilarity], result of:
           0.07922924 = score(doc=1314,freq=1.0), product of:
             0.14217147 = queryWeight, product of:
               1.0608563 = boost
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.0225452 = queryNorm
             0.55727947 = fieldWeight in 1314, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.09375 = fieldNorm(doc=1314)
         0.08344433 = weight(abstract_txt:matching in 1314) [ClassicSimilarity], result of:
           0.08344433 = score(doc=1314,freq=1.0), product of:
             0.14717023 = queryWeight, product of:
               1.0793451 = boost
               6.047913 = idf(docFreq=283, maxDocs=44218)
               0.0225452 = queryNorm
             0.56699187 = fieldWeight in 1314, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.047913 = idf(docFreq=283, maxDocs=44218)
               0.09375 = fieldNorm(doc=1314)
         0.09190825 = weight(abstract_txt:pattern in 1314) [ClassicSimilarity], result of:
           0.09190825 = score(doc=1314,freq=1.0), product of:
             0.15696101 = queryWeight, product of:
               1.1146698 = boost
               6.2458487 = idf(docFreq=232, maxDocs=44218)
               0.0225452 = queryNorm
             0.5855483 = fieldWeight in 1314, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.2458487 = idf(docFreq=232, maxDocs=44218)
               0.09375 = fieldNorm(doc=1314)
         0.03186063 = weight(abstract_txt:results in 1314) [ClassicSimilarity], result of:
           0.03186063 = score(doc=1314,freq=1.0), product of:
             0.09758918 = queryWeight, product of:
               1.2429858 = boost
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.0225452 = queryNorm
             0.32647708 = fieldWeight in 1314, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.09375 = fieldNorm(doc=1314)
         0.12818748 = weight(abstract_txt:weighting in 1314) [ClassicSimilarity], result of:
           0.12818748 = score(doc=1314,freq=1.0), product of:
             0.19593823 = queryWeight, product of:
               1.245403 = boost
               6.9783883 = idf(docFreq=111, maxDocs=44218)
               0.0225452 = queryNorm
             0.6542239 = fieldWeight in 1314, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.9783883 = idf(docFreq=111, maxDocs=44218)
               0.09375 = fieldNorm(doc=1314)
         0.094276145 = weight(abstract_txt:large in 1314) [ClassicSimilarity], result of:
           0.094276145 = score(doc=1314,freq=2.0), product of:
             0.1596455 = queryWeight, product of:
               1.5898044 = boost
               4.454089 = idf(docFreq=1397, maxDocs=44218)
               0.0225452 = queryNorm
             0.5905343 = fieldWeight in 1314, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.454089 = idf(docFreq=1397, maxDocs=44218)
               0.09375 = fieldNorm(doc=1314)
         0.082258105 = weight(abstract_txt:retrieval in 1314) [ClassicSimilarity], result of:
           0.082258105 = score(doc=1314,freq=3.0), product of:
             0.14577216 = queryWeight, product of:
               1.8605796 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.0225452 = queryNorm
             0.5642923 = fieldWeight in 1314, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.09375 = fieldNorm(doc=1314)
         0.22501554 = weight(abstract_txt:conference in 1314) [ClassicSimilarity], result of:
           0.22501554 = score(doc=1314,freq=3.0), product of:
             0.24907684 = queryWeight, product of:
               1.985784 = boost
               5.563489 = idf(docFreq=460, maxDocs=44218)
               0.0225452 = queryNorm
             0.90339804 = fieldWeight in 1314, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.563489 = idf(docFreq=460, maxDocs=44218)
               0.09375 = fieldNorm(doc=1314)
         0.39294517 = weight(abstract_txt:trec in 1314) [ClassicSimilarity], result of:
           0.39294517 = score(doc=1314,freq=3.0), product of:
             0.36119884 = queryWeight, product of:
               2.3913245 = boost
               6.699675 = idf(docFreq=147, maxDocs=44218)
               0.0225452 = queryNorm
             1.0878916 = fieldWeight in 1314, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.699675 = idf(docFreq=147, maxDocs=44218)
               0.09375 = fieldNorm(doc=1314)
         0.1487537 = weight(abstract_txt:techniques in 1314) [ClassicSimilarity], result of:
           0.1487537 = score(doc=1314,freq=2.0), product of:
             0.24768385 = queryWeight, product of:
               2.4252684 = boost
               4.5298495 = idf(docFreq=1295, maxDocs=44218)
               0.0225452 = queryNorm
             0.6005789 = fieldWeight in 1314, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.5298495 = idf(docFreq=1295, maxDocs=44218)
               0.09375 = fieldNorm(doc=1314)
       0.44 = coord(11/25)
   

5. ¬The Eleventh Text Retrieval Conference, TREC 2002 (2003) 0.54

   0.5438823 = sum of:
     0.5438823 = product of:
       1.3597057 = sum of:
         0.07789315 = weight(abstract_txt:compare in 4049) [ClassicSimilarity], result of:
           0.07789315 = score(doc=4049,freq=1.0), product of:
             0.12684026 = queryWeight, product of:
               1.0020258 = boost
               5.6146684 = idf(docFreq=437, maxDocs=44218)
               0.0225452 = queryNorm
             0.61410433 = fieldWeight in 4049, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6146684 = idf(docFreq=437, maxDocs=44218)
               0.109375 = fieldNorm(doc=4049)
         0.09141259 = weight(abstract_txt:held in 4049) [ClassicSimilarity], result of:
           0.09141259 = score(doc=4049,freq=1.0), product of:
             0.14112207 = queryWeight, product of:
               1.0569339 = boost
               5.9223356 = idf(docFreq=321, maxDocs=44218)
               0.0225452 = queryNorm
             0.64775544 = fieldWeight in 4049, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9223356 = idf(docFreq=321, maxDocs=44218)
               0.109375 = fieldNorm(doc=4049)
         0.12565343 = weight(abstract_txt:procedure in 4049) [ClassicSimilarity], result of:
           0.12565343 = score(doc=4049,freq=1.0), product of:
             0.17446454 = queryWeight, product of:
               1.1751788 = boost
               6.5848994 = idf(docFreq=165, maxDocs=44218)
               0.0225452 = queryNorm
             0.72022337 = fieldWeight in 4049, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.5848994 = idf(docFreq=165, maxDocs=44218)
               0.109375 = fieldNorm(doc=4049)
         0.037170734 = weight(abstract_txt:results in 4049) [ClassicSimilarity], result of:
           0.037170734 = score(doc=4049,freq=1.0), product of:
             0.09758918 = queryWeight, product of:
               1.2429858 = boost
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.0225452 = queryNorm
             0.38088992 = fieldWeight in 4049, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.109375 = fieldNorm(doc=4049)
         0.23749067 = weight(abstract_txt:maryland in 4049) [ClassicSimilarity], result of:
           0.23749067 = score(doc=4049,freq=1.0), product of:
             0.26669934 = queryWeight, product of:
               1.4529856 = boost
               8.14154 = idf(docFreq=34, maxDocs=44218)
               0.0225452 = queryNorm
             0.8904809 = fieldWeight in 4049, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.14154 = idf(docFreq=34, maxDocs=44218)
               0.109375 = fieldNorm(doc=4049)
         0.10998884 = weight(abstract_txt:large in 4049) [ClassicSimilarity], result of:
           0.10998884 = score(doc=4049,freq=2.0), product of:
             0.1596455 = queryWeight, product of:
               1.5898044 = boost
               4.454089 = idf(docFreq=1397, maxDocs=44218)
               0.0225452 = queryNorm
             0.68895674 = fieldWeight in 4049, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.454089 = idf(docFreq=1397, maxDocs=44218)
               0.109375 = fieldNorm(doc=4049)
         0.07835737 = weight(abstract_txt:retrieval in 4049) [ClassicSimilarity], result of:
           0.07835737 = score(doc=4049,freq=2.0), product of:
             0.14577216 = queryWeight, product of:
               1.8605796 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.0225452 = queryNorm
             0.53753316 = fieldWeight in 4049, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.109375 = fieldNorm(doc=4049)
         0.21434514 = weight(abstract_txt:conference in 4049) [ClassicSimilarity], result of:
           0.21434514 = score(doc=4049,freq=2.0), product of:
             0.24907684 = queryWeight, product of:
               1.985784 = boost
               5.563489 = idf(docFreq=460, maxDocs=44218)
               0.0225452 = queryNorm
             0.8605583 = fieldWeight in 4049, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.563489 = idf(docFreq=460, maxDocs=44218)
               0.109375 = fieldNorm(doc=4049)
         0.26467818 = weight(abstract_txt:trec in 4049) [ClassicSimilarity], result of:
           0.26467818 = score(doc=4049,freq=1.0), product of:
             0.36119884 = queryWeight, product of:
               2.3913245 = boost
               6.699675 = idf(docFreq=147, maxDocs=44218)
               0.0225452 = queryNorm
             0.73277694 = fieldWeight in 4049, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.699675 = idf(docFreq=147, maxDocs=44218)
               0.109375 = fieldNorm(doc=4049)
         0.12271553 = weight(abstract_txt:techniques in 4049) [ClassicSimilarity], result of:
           0.12271553 = score(doc=4049,freq=1.0), product of:
             0.24768385 = queryWeight, product of:
               2.4252684 = boost
               4.5298495 = idf(docFreq=1295, maxDocs=44218)
               0.0225452 = queryNorm
             0.49545228 = fieldWeight in 4049, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.5298495 = idf(docFreq=1295, maxDocs=44218)
               0.109375 = fieldNorm(doc=4049)
       0.4 = coord(10/25)