Document (#37510)

Author
Blanke, T.
Lalmas, M.
Huibers, T.
Title
¬A framework for the theoretical evaluation of XML retrieval
Source
Journal of the American Society for Information Science and Technology. 63(2012) no.12, S.2463-2473
Year
2012
Abstract
We present a theoretical framework to evaluate XML retrieval. XML retrieval deals with retrieving those document components-the XML elements-that specifically answer a query. In this article, theoretical evaluation is concerned with the formal representation of qualitative properties of retrieval models. It complements experimental methods by showing the properties of the underlying reasoning assumptions that decide when a document is about a query. We define a theoretical methodology based on the idea of "aboutness" and apply it to current XML retrieval models. This allows comparing and analyzing the reasoning behavior of XML retrieval models experimented within the INEX evaluation campaigns. For each model we derive functional and qualitative properties that qualify its formal behavior. We then use these properties to explain experimental results obtained with some of the XML retrieval models.
Object
XML

Similar documents (author)

  1. Huibers, T.W.C.: ¬An axiomatic theory for information retrieval (1996) 2.50
    2.4969788 = sum of:
      2.4969788 = product of:
        4.9939575 = sum of:
          4.9939575 = weight(author_txt:huibers in 7526) [ClassicSimilarity], result of:
            4.9939575 = score(doc=7526,freq=1.0), product of:
              0.8066864 = queryWeight, product of:
                1.1683315 = boost
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.06970735 = queryNorm
              6.190705 = fieldWeight in 7526, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.625 = fieldNorm(doc=7526)
        0.5 = coord(1/2)
    
  2. Berger, F.C.; Huibers, T.W.C.: ¬A framework based on situation theory for searching in a thesaurus (1995) 2.00
    1.9975829 = sum of:
      1.9975829 = product of:
        3.9951658 = sum of:
          3.9951658 = weight(author_txt:huibers in 5801) [ClassicSimilarity], result of:
            3.9951658 = score(doc=5801,freq=1.0), product of:
              0.8066864 = queryWeight, product of:
                1.1683315 = boost
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.06970735 = queryNorm
              4.952564 = fieldWeight in 5801, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.5 = fieldNorm(doc=5801)
        0.5 = coord(1/2)
    
  3. Huibers, T.W.C.; Bruza, P.D.: Situations, a general framework for studying information retrieval (1996) 2.00
    1.9975829 = sum of:
      1.9975829 = product of:
        3.9951658 = sum of:
          3.9951658 = weight(author_txt:huibers in 6963) [ClassicSimilarity], result of:
            3.9951658 = score(doc=6963,freq=1.0), product of:
              0.8066864 = queryWeight, product of:
                1.1683315 = boost
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.06970735 = queryNorm
              4.952564 = fieldWeight in 6963, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.5 = fieldNorm(doc=6963)
        0.5 = coord(1/2)
    
  4. Bruza, P.D.; Huibers, T.W.C.: ¬A study of aboutness in information retrieval (1996) 2.00
    1.9975829 = sum of:
      1.9975829 = product of:
        3.9951658 = sum of:
          3.9951658 = weight(author_txt:huibers in 7705) [ClassicSimilarity], result of:
            3.9951658 = score(doc=7705,freq=1.0), product of:
              0.8066864 = queryWeight, product of:
                1.1683315 = boost
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.06970735 = queryNorm
              4.952564 = fieldWeight in 7705, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.5 = fieldNorm(doc=7705)
        0.5 = coord(1/2)
    
  5. Lalmas, M.: Logical models in information retrieval : introduction and overview (1998) 1.57
    1.5657289 = sum of:
      1.5657289 = product of:
        3.1314578 = sum of:
          3.1314578 = weight(author_txt:lalmas in 2668) [ClassicSimilarity], result of:
            3.1314578 = score(doc=2668,freq=1.0), product of:
              0.5909797 = queryWeight, product of:
                8.478011 = idf(docFreq=24, maxDocs=44218)
                0.06970735 = queryNorm
              5.298757 = fieldWeight in 2668, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.478011 = idf(docFreq=24, maxDocs=44218)
                0.625 = fieldNorm(doc=2668)
        0.5 = coord(1/2)
    

Similar documents (content)

  1. Huibers, T.W.C.; Bruza, P.D.: Situations, a general framework for studying information retrieval (1996) 0.21
    0.21302506 = sum of:
      0.21302506 = product of:
        0.7608038 = sum of:
          0.09387093 = weight(abstract_txt:decide in 6963) [ClassicSimilarity], result of:
            0.09387093 = score(doc=6963,freq=1.0), product of:
              0.16131642 = queryWeight, product of:
                1.1412705 = boost
                7.448392 = idf(docFreq=69, maxDocs=44218)
                0.018976996 = queryNorm
              0.5819056 = fieldWeight in 6963, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.448392 = idf(docFreq=69, maxDocs=44218)
                0.078125 = fieldNorm(doc=6963)
          0.010645007 = weight(abstract_txt:with in 6963) [ClassicSimilarity], result of:
            0.010645007 = score(doc=6963,freq=1.0), product of:
              0.054508246 = queryWeight, product of:
                1.1490556 = boost
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.018976996 = queryNorm
              0.19529167 = fieldWeight in 6963, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.078125 = fieldNorm(doc=6963)
          0.16345882 = weight(abstract_txt:aboutness in 6963) [ClassicSimilarity], result of:
            0.16345882 = score(doc=6963,freq=2.0), product of:
              0.18531905 = queryWeight, product of:
                1.2232335 = boost
                7.983315 = idf(docFreq=40, maxDocs=44218)
                0.018976996 = queryNorm
              0.88204 = fieldWeight in 6963, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.983315 = idf(docFreq=40, maxDocs=44218)
                0.078125 = fieldNorm(doc=6963)
          0.074169755 = weight(abstract_txt:framework in 6963) [ClassicSimilarity], result of:
            0.074169755 = score(doc=6963,freq=3.0), product of:
              0.1204422 = queryWeight, product of:
                1.3946128 = boost
                4.550903 = idf(docFreq=1268, maxDocs=44218)
                0.018976996 = queryNorm
              0.61581206 = fieldWeight in 6963, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.550903 = idf(docFreq=1268, maxDocs=44218)
                0.078125 = fieldNorm(doc=6963)
          0.18173121 = weight(abstract_txt:models in 6963) [ClassicSimilarity], result of:
            0.18173121 = score(doc=6963,freq=4.0), product of:
              0.2505787 = queryWeight, product of:
                2.8447976 = boost
                4.6415744 = idf(docFreq=1158, maxDocs=44218)
                0.018976996 = queryNorm
              0.725246 = fieldWeight in 6963, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.6415744 = idf(docFreq=1158, maxDocs=44218)
                0.078125 = fieldNorm(doc=6963)
          0.10345666 = weight(abstract_txt:theoretical in 6963) [ClassicSimilarity], result of:
            0.10345666 = score(doc=6963,freq=1.0), product of:
              0.2732227 = queryWeight, product of:
                2.9705558 = boost
                4.846761 = idf(docFreq=943, maxDocs=44218)
                0.018976996 = queryNorm
              0.37865323 = fieldWeight in 6963, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.846761 = idf(docFreq=943, maxDocs=44218)
                0.078125 = fieldNorm(doc=6963)
          0.13347141 = weight(abstract_txt:retrieval in 6963) [ClassicSimilarity], result of:
            0.13347141 = score(doc=6963,freq=4.0), product of:
              0.24580802 = queryWeight, product of:
                3.727317 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.018976996 = queryNorm
              0.5429905 = fieldWeight in 6963, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.078125 = fieldNorm(doc=6963)
        0.28 = coord(7/25)
    
  2. Bruza, P.D.; Huibers, T.W.C.: ¬A study of aboutness in information retrieval (1996) 0.20
    0.19992556 = sum of:
      0.19992556 = product of:
        0.99962777 = sum of:
          0.39230117 = weight(abstract_txt:aboutness in 7705) [ClassicSimilarity], result of:
            0.39230117 = score(doc=7705,freq=8.0), product of:
              0.18531905 = queryWeight, product of:
                1.2232335 = boost
                7.983315 = idf(docFreq=40, maxDocs=44218)
                0.018976996 = queryNorm
              2.1168962 = fieldWeight in 7705, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                7.983315 = idf(docFreq=40, maxDocs=44218)
                0.09375 = fieldNorm(doc=7705)
          0.051386315 = weight(abstract_txt:framework in 7705) [ClassicSimilarity], result of:
            0.051386315 = score(doc=7705,freq=1.0), product of:
              0.1204422 = queryWeight, product of:
                1.3946128 = boost
                4.550903 = idf(docFreq=1268, maxDocs=44218)
                0.018976996 = queryNorm
              0.42664713 = fieldWeight in 7705, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.550903 = idf(docFreq=1268, maxDocs=44218)
                0.09375 = fieldNorm(doc=7705)
          0.15420403 = weight(abstract_txt:models in 7705) [ClassicSimilarity], result of:
            0.15420403 = score(doc=7705,freq=2.0), product of:
              0.2505787 = queryWeight, product of:
                2.8447976 = boost
                4.6415744 = idf(docFreq=1158, maxDocs=44218)
                0.018976996 = queryNorm
              0.6153916 = fieldWeight in 7705, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.6415744 = idf(docFreq=1158, maxDocs=44218)
                0.09375 = fieldNorm(doc=7705)
          0.22266555 = weight(abstract_txt:properties in 7705) [ClassicSimilarity], result of:
            0.22266555 = score(doc=7705,freq=1.0), product of:
              0.4033286 = queryWeight, product of:
                3.6091821 = boost
                5.888745 = idf(docFreq=332, maxDocs=44218)
                0.018976996 = queryNorm
              0.55206984 = fieldWeight in 7705, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.888745 = idf(docFreq=332, maxDocs=44218)
                0.09375 = fieldNorm(doc=7705)
          0.17907071 = weight(abstract_txt:retrieval in 7705) [ClassicSimilarity], result of:
            0.17907071 = score(doc=7705,freq=5.0), product of:
              0.24580802 = queryWeight, product of:
                3.727317 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.018976996 = queryNorm
              0.7284982 = fieldWeight in 7705, 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=7705)
        0.2 = coord(5/25)
    
  3. Zhai, C.X.; Lafferty, J.: ¬A risk minimization framework for information retrieval (2006) 0.18
    0.18472603 = sum of:
      0.18472603 = product of:
        0.6597358 = sum of:
          0.009066116 = weight(abstract_txt:that in 958) [ClassicSimilarity], result of:
            0.009066116 = score(doc=958,freq=1.0), product of:
              0.048975524 = queryWeight, product of:
                1.0891795 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.018976996 = queryNorm
              0.18511525 = fieldWeight in 958, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.078125 = fieldNorm(doc=958)
          0.082791805 = weight(abstract_txt:derive in 958) [ClassicSimilarity], result of:
            0.082791805 = score(doc=958,freq=1.0), product of:
              0.14835975 = queryWeight, product of:
                1.0944788 = boost
                7.14301 = idf(docFreq=94, maxDocs=44218)
                0.018976996 = queryNorm
              0.55804765 = fieldWeight in 958, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.14301 = idf(docFreq=94, maxDocs=44218)
                0.078125 = fieldNorm(doc=958)
          0.010645007 = weight(abstract_txt:with in 958) [ClassicSimilarity], result of:
            0.010645007 = score(doc=958,freq=1.0), product of:
              0.054508246 = queryWeight, product of:
                1.1490556 = boost
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.018976996 = queryNorm
              0.19529167 = fieldWeight in 958, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.078125 = fieldNorm(doc=958)
          0.085643865 = weight(abstract_txt:framework in 958) [ClassicSimilarity], result of:
            0.085643865 = score(doc=958,freq=4.0), product of:
              0.1204422 = queryWeight, product of:
                1.3946128 = boost
                4.550903 = idf(docFreq=1268, maxDocs=44218)
                0.018976996 = queryNorm
              0.7110786 = fieldWeight in 958, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.550903 = idf(docFreq=1268, maxDocs=44218)
                0.078125 = fieldNorm(doc=958)
          0.0488075 = weight(abstract_txt:query in 958) [ClassicSimilarity], result of:
            0.0488075 = score(doc=958,freq=1.0), product of:
              0.13141921 = queryWeight, product of:
                1.4567792 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.018976996 = queryNorm
              0.37138787 = fieldWeight in 958, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.078125 = fieldNorm(doc=958)
          0.22257438 = weight(abstract_txt:models in 958) [ClassicSimilarity], result of:
            0.22257438 = score(doc=958,freq=6.0), product of:
              0.2505787 = queryWeight, product of:
                2.8447976 = boost
                4.6415744 = idf(docFreq=1158, maxDocs=44218)
                0.018976996 = queryNorm
              0.8882414 = fieldWeight in 958, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.6415744 = idf(docFreq=1158, maxDocs=44218)
                0.078125 = fieldNorm(doc=958)
          0.20020714 = weight(abstract_txt:retrieval in 958) [ClassicSimilarity], result of:
            0.20020714 = score(doc=958,freq=9.0), product of:
              0.24580802 = queryWeight, product of:
                3.727317 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.018976996 = queryNorm
              0.8144858 = fieldWeight in 958, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.078125 = fieldNorm(doc=958)
        0.28 = coord(7/25)
    
  4. Pal, S.; Mitra, M.; Kamps, J.: Evaluation effort, reliability and reusability in XML retrieval (2011) 0.18
    0.18167666 = sum of:
      0.18167666 = product of:
        0.6488452 = sum of:
          0.014190716 = weight(abstract_txt:that in 4197) [ClassicSimilarity], result of:
            0.014190716 = score(doc=4197,freq=5.0), product of:
              0.048975524 = queryWeight, product of:
                1.0891795 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.018976996 = queryNorm
              0.28975117 = fieldWeight in 4197, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.0546875 = fieldNorm(doc=4197)
          0.02515564 = weight(abstract_txt:document in 4197) [ClassicSimilarity], result of:
            0.02515564 = score(doc=4197,freq=1.0), product of:
              0.107158355 = queryWeight, product of:
                1.315459 = boost
                4.2926083 = idf(docFreq=1642, maxDocs=44218)
                0.018976996 = queryNorm
              0.23475201 = fieldWeight in 4197, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2926083 = idf(docFreq=1642, maxDocs=44218)
                0.0546875 = fieldNorm(doc=4197)
          0.29479507 = weight(abstract_txt:inex in 4197) [ClassicSimilarity], result of:
            0.29479507 = score(doc=4197,freq=5.0), product of:
              0.25661534 = queryWeight, product of:
                1.4394302 = boost
                9.394302 = idf(docFreq=9, maxDocs=44218)
                0.018976996 = queryNorm
              1.1487819 = fieldWeight in 4197, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                9.394302 = idf(docFreq=9, maxDocs=44218)
                0.0546875 = fieldNorm(doc=4197)
          0.04831696 = weight(abstract_txt:query in 4197) [ClassicSimilarity], result of:
            0.04831696 = score(doc=4197,freq=2.0), product of:
              0.13141921 = queryWeight, product of:
                1.4567792 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.018976996 = queryNorm
              0.36765522 = fieldWeight in 4197, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.0546875 = fieldNorm(doc=4197)
          0.043068588 = weight(abstract_txt:evaluation in 4197) [ClassicSimilarity], result of:
            0.043068588 = score(doc=4197,freq=1.0), product of:
              0.17555235 = queryWeight, product of:
                2.0621169 = boost
                4.4860687 = idf(docFreq=1353, maxDocs=44218)
                0.018976996 = queryNorm
              0.24533188 = fieldWeight in 4197, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4860687 = idf(docFreq=1353, maxDocs=44218)
                0.0546875 = fieldNorm(doc=4197)
          0.12988824 = weight(abstract_txt:properties in 4197) [ClassicSimilarity], result of:
            0.12988824 = score(doc=4197,freq=1.0), product of:
              0.4033286 = queryWeight, product of:
                3.6091821 = boost
                5.888745 = idf(docFreq=332, maxDocs=44218)
                0.018976996 = queryNorm
              0.32204074 = fieldWeight in 4197, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.888745 = idf(docFreq=332, maxDocs=44218)
                0.0546875 = fieldNorm(doc=4197)
          0.09343 = weight(abstract_txt:retrieval in 4197) [ClassicSimilarity], result of:
            0.09343 = score(doc=4197,freq=4.0), product of:
              0.24580802 = queryWeight, product of:
                3.727317 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.018976996 = queryNorm
              0.38009337 = fieldWeight in 4197, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.0546875 = fieldNorm(doc=4197)
        0.28 = coord(7/25)
    
  5. Na, S.-H.; Kang, I.-S.; Lee, J.-H.: Adaptive document clustering based on query-based similarity (2007) 0.18
    0.17831425 = sum of:
      0.17831425 = product of:
        0.49531734 = sum of:
          0.010257139 = weight(abstract_txt:that in 920) [ClassicSimilarity], result of:
            0.010257139 = score(doc=920,freq=2.0), product of:
              0.048975524 = queryWeight, product of:
                1.0891795 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.018976996 = queryNorm
              0.20943399 = fieldWeight in 920, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.0625 = fieldNorm(doc=920)
          0.06623345 = weight(abstract_txt:derive in 920) [ClassicSimilarity], result of:
            0.06623345 = score(doc=920,freq=1.0), product of:
              0.14835975 = queryWeight, product of:
                1.0944788 = boost
                7.14301 = idf(docFreq=94, maxDocs=44218)
                0.018976996 = queryNorm
              0.44643813 = fieldWeight in 920, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.14301 = idf(docFreq=94, maxDocs=44218)
                0.0625 = fieldNorm(doc=920)
          0.008516005 = weight(abstract_txt:with in 920) [ClassicSimilarity], result of:
            0.008516005 = score(doc=920,freq=1.0), product of:
              0.054508246 = queryWeight, product of:
                1.1490556 = boost
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.018976996 = queryNorm
              0.15623334 = fieldWeight in 920, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.0625 = fieldNorm(doc=920)
          0.0642854 = weight(abstract_txt:document in 920) [ClassicSimilarity], result of:
            0.0642854 = score(doc=920,freq=5.0), product of:
              0.107158355 = queryWeight, product of:
                1.315459 = boost
                4.2926083 = idf(docFreq=1642, maxDocs=44218)
                0.018976996 = queryNorm
              0.59991026 = fieldWeight in 920, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.2926083 = idf(docFreq=1642, maxDocs=44218)
                0.0625 = fieldNorm(doc=920)
          0.034257546 = weight(abstract_txt:framework in 920) [ClassicSimilarity], result of:
            0.034257546 = score(doc=920,freq=1.0), product of:
              0.1204422 = queryWeight, product of:
                1.3946128 = boost
                4.550903 = idf(docFreq=1268, maxDocs=44218)
                0.018976996 = queryNorm
              0.28443143 = fieldWeight in 920, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.550903 = idf(docFreq=1268, maxDocs=44218)
                0.0625 = fieldNorm(doc=920)
          0.08730951 = weight(abstract_txt:query in 920) [ClassicSimilarity], result of:
            0.08730951 = score(doc=920,freq=5.0), product of:
              0.13141921 = queryWeight, product of:
                1.4567792 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.018976996 = queryNorm
              0.6643588 = fieldWeight in 920, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.0625 = fieldNorm(doc=920)
          0.049221244 = weight(abstract_txt:evaluation in 920) [ClassicSimilarity], result of:
            0.049221244 = score(doc=920,freq=1.0), product of:
              0.17555235 = queryWeight, product of:
                2.0621169 = boost
                4.4860687 = idf(docFreq=1353, maxDocs=44218)
                0.018976996 = queryNorm
              0.2803793 = fieldWeight in 920, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4860687 = idf(docFreq=1353, maxDocs=44218)
                0.0625 = fieldNorm(doc=920)
          0.082765326 = weight(abstract_txt:theoretical in 920) [ClassicSimilarity], result of:
            0.082765326 = score(doc=920,freq=1.0), product of:
              0.2732227 = queryWeight, product of:
                2.9705558 = boost
                4.846761 = idf(docFreq=943, maxDocs=44218)
                0.018976996 = queryNorm
              0.30292258 = fieldWeight in 920, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.846761 = idf(docFreq=943, maxDocs=44218)
                0.0625 = fieldNorm(doc=920)
          0.09247171 = weight(abstract_txt:retrieval in 920) [ClassicSimilarity], result of:
            0.09247171 = score(doc=920,freq=3.0), product of:
              0.24580802 = queryWeight, product of:
                3.727317 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.018976996 = queryNorm
              0.37619486 = fieldWeight in 920, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.0625 = fieldNorm(doc=920)
        0.36 = coord(9/25)