Document (#10132)

Author

Marega, R.
Pazienza, M.T.

Title

CoDHIR: an information retrieval system based on semantic document representation

Source

Journal of information science. 20(1994) no.6, S.399-412

Year

1994

Abstract

Describes an information retrieval (IR) system, implemented as a part of a Content Driven Hypertext Information Retrieval (CoDHIR) project. Focuses on the use of semantic information that can be automatically acquired by applying natural language processing (NLP) techniques to texts. The information is represented using conceptual graphs. The problems of synonyms and homonyms is addressed by using a model based on the interpretation of conceptual graphs extracted from texts. The detection of contextual roles of words allows an improvement in retrieval precision over traditional IR technologies. Ranking of documents, based on document relevance, is obtained by extending the vector space model into an oblique space and taking into account the relevance among different word couples

Similar documents (content)

1. Yeh, J.-F.; Wu, C.-H.; Chen, M.-J.: Ontology-based speech act identification in a bilingual dialog system using partial pattern trees (2008) 0.40

   0.395093 = sum of:
     0.395093 = product of:
       0.75979424 = sum of:
         0.06000203 = weight(abstract_txt:improvement in 1607) [ClassicSimilarity], result of:
           0.06000203 = score(doc=1607,freq=1.0), product of:
             0.15605946 = queryWeight, product of:
               1.01952 = boost
               6.1517096 = idf(docFreq=255, maxDocs=44218)
               0.024882758 = queryNorm
             0.38448185 = fieldWeight in 1607, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.1517096 = idf(docFreq=255, maxDocs=44218)
               0.0625 = fieldNorm(doc=1607)
         0.08518067 = weight(abstract_txt:extracted in 1607) [ClassicSimilarity], result of:
           0.08518067 = score(doc=1607,freq=2.0), product of:
             0.15645766 = queryWeight, product of:
               1.0208199 = boost
               6.159553 = idf(docFreq=253, maxDocs=44218)
               0.024882758 = queryNorm
             0.5444327 = fieldWeight in 1607, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.159553 = idf(docFreq=253, maxDocs=44218)
               0.0625 = fieldNorm(doc=1607)
         0.06399474 = weight(abstract_txt:driven in 1607) [ClassicSimilarity], result of:
           0.06399474 = score(doc=1607,freq=1.0), product of:
             0.16290797 = queryWeight, product of:
               1.0416502 = boost
               6.285241 = idf(docFreq=223, maxDocs=44218)
               0.024882758 = queryNorm
             0.39282757 = fieldWeight in 1607, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.285241 = idf(docFreq=223, maxDocs=44218)
               0.0625 = fieldNorm(doc=1607)
         0.06674051 = weight(abstract_txt:contextual in 1607) [ClassicSimilarity], result of:
           0.06674051 = score(doc=1607,freq=1.0), product of:
             0.16753511 = queryWeight, product of:
               1.0563397 = boost
               6.373877 = idf(docFreq=204, maxDocs=44218)
               0.024882758 = queryNorm
             0.39836732 = fieldWeight in 1607, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.373877 = idf(docFreq=204, maxDocs=44218)
               0.0625 = fieldNorm(doc=1607)
         0.07146093 = weight(abstract_txt:vector in 1607) [ClassicSimilarity], result of:
           0.07146093 = score(doc=1607,freq=1.0), product of:
             0.17534442 = queryWeight, product of:
               1.0806789 = boost
               6.5207376 = idf(docFreq=176, maxDocs=44218)
               0.024882758 = queryNorm
             0.4075461 = fieldWeight in 1607, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.5207376 = idf(docFreq=176, maxDocs=44218)
               0.0625 = fieldNorm(doc=1607)
         0.044205405 = weight(abstract_txt:system in 1607) [ClassicSimilarity], result of:
           0.044205405 = score(doc=1607,freq=5.0), product of:
             0.09379573 = queryWeight, product of:
               1.1177824 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.024882758 = queryNorm
             0.47129443 = fieldWeight in 1607, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.0625 = fieldNorm(doc=1607)
         0.030277887 = weight(abstract_txt:using in 1607) [ClassicSimilarity], result of:
           0.030277887 = score(doc=1607,freq=2.0), product of:
             0.098915234 = queryWeight, product of:
               1.1478821 = boost
               3.4631186 = idf(docFreq=3765, maxDocs=44218)
               0.024882758 = queryNorm
             0.30609933 = fieldWeight in 1607, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4631186 = idf(docFreq=3765, maxDocs=44218)
               0.0625 = fieldNorm(doc=1607)
         0.04617552 = weight(abstract_txt:model in 1607) [ClassicSimilarity], result of:
           0.04617552 = score(doc=1607,freq=2.0), product of:
             0.13105513 = queryWeight, product of:
               1.3212736 = boost
               3.986234 = idf(docFreq=2231, maxDocs=44218)
               0.024882758 = queryNorm
             0.35233662 = fieldWeight in 1607, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.986234 = idf(docFreq=2231, maxDocs=44218)
               0.0625 = fieldNorm(doc=1607)
         0.07997433 = weight(abstract_txt:semantic in 1607) [ClassicSimilarity], result of:
           0.07997433 = score(doc=1607,freq=3.0), product of:
             0.16511358 = queryWeight, product of:
               1.4830545 = boost
               4.4743214 = idf(docFreq=1369, maxDocs=44218)
               0.024882758 = queryNorm
             0.48435947 = fieldWeight in 1607, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.4743214 = idf(docFreq=1369, maxDocs=44218)
               0.0625 = fieldNorm(doc=1607)
         0.056015752 = weight(abstract_txt:based in 1607) [ClassicSimilarity], result of:
           0.056015752 = score(doc=1607,freq=5.0), product of:
             0.12572935 = queryWeight, product of:
               1.5850016 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.024882758 = queryNorm
             0.44552645 = fieldWeight in 1607, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.0625 = fieldNorm(doc=1607)
         0.08082842 = weight(abstract_txt:space in 1607) [ClassicSimilarity], result of:
           0.08082842 = score(doc=1607,freq=1.0), product of:
             0.23982744 = queryWeight, product of:
               1.7873728 = boost
               5.3924384 = idf(docFreq=546, maxDocs=44218)
               0.024882758 = queryNorm
             0.3370274 = fieldWeight in 1607, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.3924384 = idf(docFreq=546, maxDocs=44218)
               0.0625 = fieldNorm(doc=1607)
         0.031671204 = weight(abstract_txt:information in 1607) [ClassicSimilarity], result of:
           0.031671204 = score(doc=1607,freq=3.0), product of:
             0.12084781 = queryWeight, product of:
               2.0061116 = boost
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.024882758 = queryNorm
             0.26207513 = fieldWeight in 1607, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.0625 = fieldNorm(doc=1607)
         0.043266837 = weight(abstract_txt:retrieval in 1607) [ClassicSimilarity], result of:
           0.043266837 = score(doc=1607,freq=1.0), product of:
             0.19920622 = queryWeight, product of:
               2.303733 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.024882758 = queryNorm
             0.21719621 = fieldWeight in 1607, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.0625 = fieldNorm(doc=1607)
       0.52 = coord(13/25)
   

2. Köhler, J.; Philippi, S.; Specht, M.; Rüegg, A.: Ontology based text indexing and querying for the semantic web (2006) 0.29

   0.29320025 = sum of:
     0.29320025 = product of:
       0.8144451 = sum of:
         0.027957955 = weight(abstract_txt:system in 3280) [ClassicSimilarity], result of:
           0.027957955 = score(doc=3280,freq=2.0), product of:
             0.09379573 = queryWeight, product of:
               1.1177824 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.024882758 = queryNorm
             0.2980728 = fieldWeight in 3280, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.0625 = fieldNorm(doc=3280)
         0.026172483 = weight(abstract_txt:into in 3280) [ClassicSimilarity], result of:
           0.026172483 = score(doc=3280,freq=1.0), product of:
             0.11308876 = queryWeight, product of:
               1.2273698 = boost
               3.7029297 = idf(docFreq=2962, maxDocs=44218)
               0.024882758 = queryNorm
             0.23143311 = fieldWeight in 3280, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.7029297 = idf(docFreq=2962, maxDocs=44218)
               0.0625 = fieldNorm(doc=3280)
         0.16342965 = weight(abstract_txt:synonyms in 3280) [ClassicSimilarity], result of:
           0.16342965 = score(doc=3280,freq=2.0), product of:
             0.24157764 = queryWeight, product of:
               1.2684667 = boost
               7.653836 = idf(docFreq=56, maxDocs=44218)
               0.024882758 = queryNorm
             0.67650986 = fieldWeight in 3280, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.653836 = idf(docFreq=56, maxDocs=44218)
               0.0625 = fieldNorm(doc=3280)
         0.25382525 = weight(abstract_txt:homonyms in 3280) [ClassicSimilarity], result of:
           0.25382525 = score(doc=3280,freq=2.0), product of:
             0.32398584 = queryWeight, product of:
               1.4689727 = boost
               8.863674 = idf(docFreq=16, maxDocs=44218)
               0.024882758 = queryNorm
             0.7834455 = fieldWeight in 3280, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               8.863674 = idf(docFreq=16, maxDocs=44218)
               0.0625 = fieldNorm(doc=3280)
         0.046173204 = weight(abstract_txt:semantic in 3280) [ClassicSimilarity], result of:
           0.046173204 = score(doc=3280,freq=1.0), product of:
             0.16511358 = queryWeight, product of:
               1.4830545 = boost
               4.4743214 = idf(docFreq=1369, maxDocs=44218)
               0.024882758 = queryNorm
             0.2796451 = fieldWeight in 3280, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4743214 = idf(docFreq=1369, maxDocs=44218)
               0.0625 = fieldNorm(doc=3280)
         0.056015752 = weight(abstract_txt:based in 3280) [ClassicSimilarity], result of:
           0.056015752 = score(doc=3280,freq=5.0), product of:
             0.12572935 = queryWeight, product of:
               1.5850016 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.024882758 = queryNorm
             0.44552645 = fieldWeight in 3280, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.0625 = fieldNorm(doc=3280)
         0.16139689 = weight(abstract_txt:texts in 3280) [ClassicSimilarity], result of:
           0.16139689 = score(doc=3280,freq=3.0), product of:
             0.2636812 = queryWeight, product of:
               1.8741541 = boost
               5.6542544 = idf(docFreq=420, maxDocs=44218)
               0.024882758 = queryNorm
             0.612091 = fieldWeight in 3280, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.6542544 = idf(docFreq=420, maxDocs=44218)
               0.0625 = fieldNorm(doc=3280)
         0.018285379 = weight(abstract_txt:information in 3280) [ClassicSimilarity], result of:
           0.018285379 = score(doc=3280,freq=1.0), product of:
             0.12084781 = queryWeight, product of:
               2.0061116 = boost
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.024882758 = queryNorm
             0.15130915 = fieldWeight in 3280, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.0625 = fieldNorm(doc=3280)
         0.06118854 = weight(abstract_txt:retrieval in 3280) [ClassicSimilarity], result of:
           0.06118854 = score(doc=3280,freq=2.0), product of:
             0.19920622 = queryWeight, product of:
               2.303733 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.024882758 = queryNorm
             0.3071618 = fieldWeight in 3280, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.0625 = fieldNorm(doc=3280)
       0.36 = coord(9/25)
   

3. Mestrovic, A.; Cali, A.: ¬An ontology-based approach to information retrieval (2017) 0.27

   0.26662186 = sum of:
     0.26662186 = product of:
       0.66655463 = sum of:
         0.075289786 = weight(abstract_txt:extracted in 3489) [ClassicSimilarity], result of:
           0.075289786 = score(doc=3489,freq=1.0), product of:
             0.15645766 = queryWeight, product of:
               1.0208199 = boost
               6.159553 = idf(docFreq=253, maxDocs=44218)
               0.024882758 = queryNorm
             0.4812151 = fieldWeight in 3489, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.159553 = idf(docFreq=253, maxDocs=44218)
               0.078125 = fieldNorm(doc=3489)
         0.17865233 = weight(abstract_txt:vector in 3489) [ClassicSimilarity], result of:
           0.17865233 = score(doc=3489,freq=4.0), product of:
             0.17534442 = queryWeight, product of:
               1.0806789 = boost
               6.5207376 = idf(docFreq=176, maxDocs=44218)
               0.024882758 = queryNorm
             1.0188652 = fieldWeight in 3489, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               6.5207376 = idf(docFreq=176, maxDocs=44218)
               0.078125 = fieldNorm(doc=3489)
         0.032715604 = weight(abstract_txt:into in 3489) [ClassicSimilarity], result of:
           0.032715604 = score(doc=3489,freq=1.0), product of:
             0.11308876 = queryWeight, product of:
               1.2273698 = boost
               3.7029297 = idf(docFreq=2962, maxDocs=44218)
               0.024882758 = queryNorm
             0.28929138 = fieldWeight in 3489, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.7029297 = idf(docFreq=2962, maxDocs=44218)
               0.078125 = fieldNorm(doc=3489)
         0.04081378 = weight(abstract_txt:model in 3489) [ClassicSimilarity], result of:
           0.04081378 = score(doc=3489,freq=1.0), product of:
             0.13105513 = queryWeight, product of:
               1.3212736 = boost
               3.986234 = idf(docFreq=2231, maxDocs=44218)
               0.024882758 = queryNorm
             0.31142452 = fieldWeight in 3489, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.986234 = idf(docFreq=2231, maxDocs=44218)
               0.078125 = fieldNorm(doc=3489)
         0.07207709 = weight(abstract_txt:document in 3489) [ClassicSimilarity], result of:
           0.07207709 = score(doc=3489,freq=2.0), product of:
             0.15197457 = queryWeight, product of:
               1.422824 = boost
               4.2926083 = idf(docFreq=1642, maxDocs=44218)
               0.024882758 = queryNorm
             0.4742707 = fieldWeight in 3489, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.2926083 = idf(docFreq=1642, maxDocs=44218)
               0.078125 = fieldNorm(doc=3489)
         0.057716504 = weight(abstract_txt:semantic in 3489) [ClassicSimilarity], result of:
           0.057716504 = score(doc=3489,freq=1.0), product of:
             0.16511358 = queryWeight, product of:
               1.4830545 = boost
               4.4743214 = idf(docFreq=1369, maxDocs=44218)
               0.024882758 = queryNorm
             0.34955636 = fieldWeight in 3489, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4743214 = idf(docFreq=1369, maxDocs=44218)
               0.078125 = fieldNorm(doc=3489)
         0.031313755 = weight(abstract_txt:based in 3489) [ClassicSimilarity], result of:
           0.031313755 = score(doc=3489,freq=1.0), product of:
             0.12572935 = queryWeight, product of:
               1.5850016 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.024882758 = queryNorm
             0.24905685 = fieldWeight in 3489, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.078125 = fieldNorm(doc=3489)
         0.10103553 = weight(abstract_txt:space in 3489) [ClassicSimilarity], result of:
           0.10103553 = score(doc=3489,freq=1.0), product of:
             0.23982744 = queryWeight, product of:
               1.7873728 = boost
               5.3924384 = idf(docFreq=546, maxDocs=44218)
               0.024882758 = queryNorm
             0.42128426 = fieldWeight in 3489, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.3924384 = idf(docFreq=546, maxDocs=44218)
               0.078125 = fieldNorm(doc=3489)
         0.022856724 = weight(abstract_txt:information in 3489) [ClassicSimilarity], result of:
           0.022856724 = score(doc=3489,freq=1.0), product of:
             0.12084781 = queryWeight, product of:
               2.0061116 = boost
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.024882758 = queryNorm
             0.18913643 = fieldWeight in 3489, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.078125 = fieldNorm(doc=3489)
         0.05408354 = weight(abstract_txt:retrieval in 3489) [ClassicSimilarity], result of:
           0.05408354 = score(doc=3489,freq=1.0), product of:
             0.19920622 = queryWeight, product of:
               2.303733 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.024882758 = queryNorm
             0.27149525 = fieldWeight in 3489, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.078125 = fieldNorm(doc=3489)
       0.4 = coord(10/25)
   

4. Liu, G.Z.: Semantic vector space model : implementation and evaluation (1997) 0.25

   0.25346404 = sum of:
     0.25346404 = product of:
       0.70406675 = sum of:
         0.1263263 = weight(abstract_txt:vector in 161) [ClassicSimilarity], result of:
           0.1263263 = score(doc=161,freq=2.0), product of:
             0.17534442 = queryWeight, product of:
               1.0806789 = boost
               6.5207376 = idf(docFreq=176, maxDocs=44218)
               0.024882758 = queryNorm
             0.7204466 = fieldWeight in 161, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.5207376 = idf(docFreq=176, maxDocs=44218)
               0.078125 = fieldNorm(doc=161)
         0.049423147 = weight(abstract_txt:system in 161) [ClassicSimilarity], result of:
           0.049423147 = score(doc=161,freq=4.0), product of:
             0.09379573 = queryWeight, product of:
               1.1177824 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.024882758 = queryNorm
             0.5269232 = fieldWeight in 161, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.078125 = fieldNorm(doc=161)
         0.026762126 = weight(abstract_txt:using in 161) [ClassicSimilarity], result of:
           0.026762126 = score(doc=161,freq=1.0), product of:
             0.098915234 = queryWeight, product of:
               1.1478821 = boost
               3.4631186 = idf(docFreq=3765, maxDocs=44218)
               0.024882758 = queryNorm
             0.27055615 = fieldWeight in 161, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4631186 = idf(docFreq=3765, maxDocs=44218)
               0.078125 = fieldNorm(doc=161)
         0.07069154 = weight(abstract_txt:model in 161) [ClassicSimilarity], result of:
           0.07069154 = score(doc=161,freq=3.0), product of:
             0.13105513 = queryWeight, product of:
               1.3212736 = boost
               3.986234 = idf(docFreq=2231, maxDocs=44218)
               0.024882758 = queryNorm
             0.5394031 = fieldWeight in 161, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.986234 = idf(docFreq=2231, maxDocs=44218)
               0.078125 = fieldNorm(doc=161)
         0.050966196 = weight(abstract_txt:document in 161) [ClassicSimilarity], result of:
           0.050966196 = score(doc=161,freq=1.0), product of:
             0.15197457 = queryWeight, product of:
               1.422824 = boost
               4.2926083 = idf(docFreq=1642, maxDocs=44218)
               0.024882758 = queryNorm
             0.33536002 = fieldWeight in 161, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.2926083 = idf(docFreq=1642, maxDocs=44218)
               0.078125 = fieldNorm(doc=161)
         0.11543301 = weight(abstract_txt:semantic in 161) [ClassicSimilarity], result of:
           0.11543301 = score(doc=161,freq=4.0), product of:
             0.16511358 = queryWeight, product of:
               1.4830545 = boost
               4.4743214 = idf(docFreq=1369, maxDocs=44218)
               0.024882758 = queryNorm
             0.6991127 = fieldWeight in 161, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.4743214 = idf(docFreq=1369, maxDocs=44218)
               0.078125 = fieldNorm(doc=161)
         0.04428434 = weight(abstract_txt:based in 161) [ClassicSimilarity], result of:
           0.04428434 = score(doc=161,freq=2.0), product of:
             0.12572935 = queryWeight, product of:
               1.5850016 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.024882758 = queryNorm
             0.35221958 = fieldWeight in 161, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.078125 = fieldNorm(doc=161)
         0.07729432 = weight(abstract_txt:relevance in 161) [ClassicSimilarity], result of:
           0.07729432 = score(doc=161,freq=1.0), product of:
             0.20060782 = queryWeight, product of:
               1.6347059 = boost
               4.931848 = idf(docFreq=866, maxDocs=44218)
               0.024882758 = queryNorm
             0.38530064 = fieldWeight in 161, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.931848 = idf(docFreq=866, maxDocs=44218)
               0.078125 = fieldNorm(doc=161)
         0.1428858 = weight(abstract_txt:space in 161) [ClassicSimilarity], result of:
           0.1428858 = score(doc=161,freq=2.0), product of:
             0.23982744 = queryWeight, product of:
               1.7873728 = boost
               5.3924384 = idf(docFreq=546, maxDocs=44218)
               0.024882758 = queryNorm
             0.5957859 = fieldWeight in 161, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.3924384 = idf(docFreq=546, maxDocs=44218)
               0.078125 = fieldNorm(doc=161)
       0.36 = coord(9/25)
   

5. Sembok, T.M.T.; Rijsbergen, C.J. van: SILOL: a simple logical-linguistic document retrieval system (1990) 0.25

   0.24790962 = sum of:
     0.24790962 = product of:
       0.6886378 = sum of:
         0.04193693 = weight(abstract_txt:system in 6684) [ClassicSimilarity], result of:
           0.04193693 = score(doc=6684,freq=2.0), product of:
             0.09379573 = queryWeight, product of:
               1.1177824 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.024882758 = queryNorm
             0.44710916 = fieldWeight in 6684, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.09375 = fieldNorm(doc=6684)
         0.032114547 = weight(abstract_txt:using in 6684) [ClassicSimilarity], result of:
           0.032114547 = score(doc=6684,freq=1.0), product of:
             0.098915234 = queryWeight, product of:
               1.1478821 = boost
               3.4631186 = idf(docFreq=3765, maxDocs=44218)
               0.024882758 = queryNorm
             0.32466736 = fieldWeight in 6684, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4631186 = idf(docFreq=3765, maxDocs=44218)
               0.09375 = fieldNorm(doc=6684)
         0.039258726 = weight(abstract_txt:into in 6684) [ClassicSimilarity], result of:
           0.039258726 = score(doc=6684,freq=1.0), product of:
             0.11308876 = queryWeight, product of:
               1.2273698 = boost
               3.7029297 = idf(docFreq=2962, maxDocs=44218)
               0.024882758 = queryNorm
             0.34714967 = fieldWeight in 6684, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.7029297 = idf(docFreq=2962, maxDocs=44218)
               0.09375 = fieldNorm(doc=6684)
         0.04897654 = weight(abstract_txt:model in 6684) [ClassicSimilarity], result of:
           0.04897654 = score(doc=6684,freq=1.0), product of:
             0.13105513 = queryWeight, product of:
               1.3212736 = boost
               3.986234 = idf(docFreq=2231, maxDocs=44218)
               0.024882758 = queryNorm
             0.37370944 = fieldWeight in 6684, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.986234 = idf(docFreq=2231, maxDocs=44218)
               0.09375 = fieldNorm(doc=6684)
         0.105931245 = weight(abstract_txt:document in 6684) [ClassicSimilarity], result of:
           0.105931245 = score(doc=6684,freq=3.0), product of:
             0.15197457 = queryWeight, product of:
               1.422824 = boost
               4.2926083 = idf(docFreq=1642, maxDocs=44218)
               0.024882758 = queryNorm
             0.6970327 = fieldWeight in 6684, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.2926083 = idf(docFreq=1642, maxDocs=44218)
               0.09375 = fieldNorm(doc=6684)
         0.09794815 = weight(abstract_txt:semantic in 6684) [ClassicSimilarity], result of:
           0.09794815 = score(doc=6684,freq=2.0), product of:
             0.16511358 = queryWeight, product of:
               1.4830545 = boost
               4.4743214 = idf(docFreq=1369, maxDocs=44218)
               0.024882758 = queryNorm
             0.5932168 = fieldWeight in 6684, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.4743214 = idf(docFreq=1369, maxDocs=44218)
               0.09375 = fieldNorm(doc=6684)
         0.03757651 = weight(abstract_txt:based in 6684) [ClassicSimilarity], result of:
           0.03757651 = score(doc=6684,freq=1.0), product of:
             0.12572935 = queryWeight, product of:
               1.5850016 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.024882758 = queryNorm
             0.29886824 = fieldWeight in 6684, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.09375 = fieldNorm(doc=6684)
         0.1397738 = weight(abstract_txt:texts in 6684) [ClassicSimilarity], result of:
           0.1397738 = score(doc=6684,freq=1.0), product of:
             0.2636812 = queryWeight, product of:
               1.8741541 = boost
               5.6542544 = idf(docFreq=420, maxDocs=44218)
               0.024882758 = queryNorm
             0.53008634 = fieldWeight in 6684, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6542544 = idf(docFreq=420, maxDocs=44218)
               0.09375 = fieldNorm(doc=6684)
         0.14512138 = weight(abstract_txt:retrieval in 6684) [ClassicSimilarity], result of:
           0.14512138 = score(doc=6684,freq=5.0), product of:
             0.19920622 = queryWeight, product of:
               2.303733 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.024882758 = queryNorm
             0.7284982 = fieldWeight in 6684, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.09375 = fieldNorm(doc=6684)
       0.36 = coord(9/25)