Document (#26012)

Author

Boughanem, M.
Chrisment, C.
Tamine, L.

Title

On using genetic algorithms for multimodal relevance optimization in information retrieval

Source

Journal of the American Society for Information Science and Technology. 53(2002) no.11, S.934-943

Year

2002

Abstract

Boughanem, Chrisment, and Tamine use 144,186 documents and 25 queries from the TREC corpus AP88 to evaluate a genetic algorithm for multiple query evaluation against single query evaluation. They demonstrate niche construction by the use of a genetic technique to reproduce queries more often if they retrieve more relevant documents (genotypic sharing), or if they have close evaluation results (phenotypic sharing).New documents generated in each iteration are ranked by a merge based on one of these two principles. Genotypic sharing yields improvements of from 6% to 15% over single query evaluation, and phenotypic sharing shows from 5% to 15% improvement. Thus the niching technique appears to offer the possibility of successful merging of different query expressions.

Theme

Retrievalalgorithmen

Similar documents (author)

1. Bouidghaghen, O.; Tamine, L.: Spatio-temporal based personalization for mobile search (2012) 4.88

   4.8777785 = sum of:
     4.8777785 = weight(author_txt:tamine in 1108) [ClassicSimilarity], result of:
       4.8777785 = fieldWeight in 1108, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.755557 = idf(docFreq=6, maxDocs=44421)
         0.5 = fieldNorm(doc=1108)
   

2. Tamine, L.; Chouquet, C.: On the impact of domain expertise on query formulation, relevance assessment and retrieval performance in clinical settings (2017) 4.88

   4.8777785 = sum of:
     4.8777785 = weight(author_txt:tamine in 4290) [ClassicSimilarity], result of:
       4.8777785 = fieldWeight in 4290, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.755557 = idf(docFreq=6, maxDocs=44421)
         0.5 = fieldNorm(doc=4290)
   

3. Moulahi, B.; Tamine, L.; Yahia, S.B.: iAggregator: multidimensional relevance aggregation based on a fuzzy operator (2014) 3.66

   3.6583338 = sum of:
     3.6583338 = weight(author_txt:tamine in 2501) [ClassicSimilarity], result of:
       3.6583338 = fieldWeight in 2501, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.755557 = idf(docFreq=6, maxDocs=44421)
         0.375 = fieldNorm(doc=2501)
   

4. Tamine, L.; Chouquet, C.; Palmer, T.: Analysis of biomedical and health queries : lessons learned from TREC and CLEF evaluation benchmarks (2015) 3.66

   3.6583338 = sum of:
     3.6583338 = weight(author_txt:tamine in 3341) [ClassicSimilarity], result of:
       3.6583338 = fieldWeight in 3341, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.755557 = idf(docFreq=6, maxDocs=44421)
         0.375 = fieldNorm(doc=3341)
   

5. Soulier, L.; Jabeur, L.B.; Tamine, L.; Bahsoun, W.: On ranking relevant entities in heterogeneous networks using a language-based model (2013) 3.05

   3.0486116 = sum of:
     3.0486116 = weight(author_txt:tamine in 1664) [ClassicSimilarity], result of:
       3.0486116 = fieldWeight in 1664, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.755557 = idf(docFreq=6, maxDocs=44421)
         0.3125 = fieldNorm(doc=1664)
   

Similar documents (content)

1. Smith, M.P.; Smith, M.: ¬The use of genetic programming to build Boolean queries for text retrieval through relevance feedback (1997) 0.33

   0.328656 = sum of:
     0.328656 = product of:
       1.02705 = sum of:
         0.017416034 = weight(abstract_txt:more in 1761) [ClassicSimilarity], result of:
           0.017416034 = score(doc=1761,freq=1.0), product of:
             0.06563901 = queryWeight, product of:
               1.0760512 = boost
               3.3962307 = idf(docFreq=4044, maxDocs=44421)
               0.017961057 = queryNorm
             0.26533052 = fieldWeight in 1761, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3962307 = idf(docFreq=4044, maxDocs=44421)
               0.078125 = fieldNorm(doc=1761)
         0.01401175 = weight(abstract_txt:from in 1761) [ClassicSimilarity], result of:
           0.01401175 = score(doc=1761,freq=1.0), product of:
             0.06499618 = queryWeight, product of:
               1.311419 = boost
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.017961057 = queryNorm
             0.21557805 = fieldWeight in 1761, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.078125 = fieldNorm(doc=1761)
         0.059030466 = weight(abstract_txt:queries in 1761) [ClassicSimilarity], result of:
           0.059030466 = score(doc=1761,freq=1.0), product of:
             0.14810851 = queryWeight, product of:
               1.6163743 = boost
               5.1015973 = idf(docFreq=734, maxDocs=44421)
               0.017961057 = queryNorm
             0.39856228 = fieldWeight in 1761, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1015973 = idf(docFreq=734, maxDocs=44421)
               0.078125 = fieldNorm(doc=1761)
         0.07784463 = weight(abstract_txt:technique in 1761) [ClassicSimilarity], result of:
           0.07784463 = score(doc=1761,freq=1.0), product of:
             0.17810726 = queryWeight, product of:
               1.7725265 = boost
               5.5944448 = idf(docFreq=448, maxDocs=44421)
               0.017961057 = queryNorm
             0.437066 = fieldWeight in 1761, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5944448 = idf(docFreq=448, maxDocs=44421)
               0.078125 = fieldNorm(doc=1761)
         0.035105675 = weight(abstract_txt:they in 1761) [ClassicSimilarity], result of:
           0.035105675 = score(doc=1761,freq=1.0), product of:
             0.11989778 = queryWeight, product of:
               1.7811608 = boost
               3.7477977 = idf(docFreq=2845, maxDocs=44421)
               0.017961057 = queryNorm
             0.2927967 = fieldWeight in 1761, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.7477977 = idf(docFreq=2845, maxDocs=44421)
               0.078125 = fieldNorm(doc=1761)
         0.08097507 = weight(abstract_txt:documents in 1761) [ClassicSimilarity], result of:
           0.08097507 = score(doc=1761,freq=3.0), product of:
             0.14512874 = queryWeight, product of:
               1.959631 = boost
               4.123322 = idf(docFreq=1954, maxDocs=44421)
               0.017961057 = queryNorm
             0.55795336 = fieldWeight in 1761, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.123322 = idf(docFreq=1954, maxDocs=44421)
               0.078125 = fieldNorm(doc=1761)
         0.13514966 = weight(abstract_txt:query in 1761) [ClassicSimilarity], result of:
           0.13514966 = score(doc=1761,freq=2.0), product of:
             0.2572799 = queryWeight, product of:
               3.0127969 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.017961057 = queryNorm
             0.52530205 = fieldWeight in 1761, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.078125 = fieldNorm(doc=1761)
         0.6075167 = weight(abstract_txt:genetic in 1761) [ClassicSimilarity], result of:
           0.6075167 = score(doc=1761,freq=4.0), product of:
             0.5053339 = queryWeight, product of:
               3.6566784 = boost
               7.694134 = idf(docFreq=54, maxDocs=44421)
               0.017961057 = queryNorm
             1.2022085 = fieldWeight in 1761, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               7.694134 = idf(docFreq=54, maxDocs=44421)
               0.078125 = fieldNorm(doc=1761)
       0.32 = coord(8/25)
   

2. Cecchini, R.L.; Lorenzetti, C.M.; Maguitman, A.G.; Brignole, N.B.: Using genetic algorithms to evolve a population of topical queries (2008) 0.17

   0.16716507 = sum of:
     0.16716507 = product of:
       0.69652116 = sum of:
         0.044730153 = weight(abstract_txt:possibility in 3443) [ClassicSimilarity], result of:
           0.044730153 = score(doc=3443,freq=1.0), product of:
             0.1133773 = queryWeight, product of:
               6.312396 = idf(docFreq=218, maxDocs=44421)
               0.017961057 = queryNorm
             0.39452475 = fieldWeight in 3443, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.312396 = idf(docFreq=218, maxDocs=44421)
               0.0625 = fieldNorm(doc=3443)
         0.14557868 = weight(abstract_txt:optimization in 3443) [ClassicSimilarity], result of:
           0.14557868 = score(doc=3443,freq=3.0), product of:
             0.17264366 = queryWeight, product of:
               1.2339917 = boost
               7.7894444 = idf(docFreq=49, maxDocs=44421)
               0.017961057 = queryNorm
             0.8432321 = fieldWeight in 3443, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               7.7894444 = idf(docFreq=49, maxDocs=44421)
               0.0625 = fieldNorm(doc=3443)
         0.015852485 = weight(abstract_txt:from in 3443) [ClassicSimilarity], result of:
           0.015852485 = score(doc=3443,freq=2.0), product of:
             0.06499618 = queryWeight, product of:
               1.311419 = boost
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.017961057 = queryNorm
             0.2438987 = fieldWeight in 3443, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.0625 = fieldNorm(doc=3443)
         0.094448745 = weight(abstract_txt:queries in 3443) [ClassicSimilarity], result of:
           0.094448745 = score(doc=3443,freq=4.0), product of:
             0.14810851 = queryWeight, product of:
               1.6163743 = boost
               5.1015973 = idf(docFreq=734, maxDocs=44421)
               0.017961057 = queryNorm
             0.63769966 = fieldWeight in 3443, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.1015973 = idf(docFreq=734, maxDocs=44421)
               0.0625 = fieldNorm(doc=3443)
         0.15290439 = weight(abstract_txt:query in 3443) [ClassicSimilarity], result of:
           0.15290439 = score(doc=3443,freq=4.0), product of:
             0.2572799 = queryWeight, product of:
               3.0127969 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.017961057 = queryNorm
             0.5943115 = fieldWeight in 3443, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.0625 = fieldNorm(doc=3443)
         0.24300668 = weight(abstract_txt:genetic in 3443) [ClassicSimilarity], result of:
           0.24300668 = score(doc=3443,freq=1.0), product of:
             0.5053339 = queryWeight, product of:
               3.6566784 = boost
               7.694134 = idf(docFreq=54, maxDocs=44421)
               0.017961057 = queryNorm
             0.4808834 = fieldWeight in 3443, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.694134 = idf(docFreq=54, maxDocs=44421)
               0.0625 = fieldNorm(doc=3443)
       0.24 = coord(6/25)
   

3. Vechtomova, O.; Karamuftuoglu, M.: Elicitation and use of relevance feedback information (2006) 0.15

   0.15115319 = sum of:
     0.15115319 = product of:
       0.62980497 = sum of:
         0.11367776 = weight(abstract_txt:trec in 1966) [ClassicSimilarity], result of:
           0.11367776 = score(doc=1966,freq=2.0), product of:
             0.12789063 = queryWeight, product of:
               1.0620778 = boost
               6.704255 = idf(docFreq=147, maxDocs=44421)
               0.017961057 = queryNorm
             0.888867 = fieldWeight in 1966, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.704255 = idf(docFreq=147, maxDocs=44421)
               0.09375 = fieldNorm(doc=1966)
         0.11518263 = weight(abstract_txt:yields in 1966) [ClassicSimilarity], result of:
           0.11518263 = score(doc=1966,freq=1.0), product of:
             0.16255102 = queryWeight, product of:
               1.1973794 = boost
               7.558333 = idf(docFreq=62, maxDocs=44421)
               0.017961057 = queryNorm
             0.7085937 = fieldWeight in 1966, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.558333 = idf(docFreq=62, maxDocs=44421)
               0.09375 = fieldNorm(doc=1966)
         0.023778727 = weight(abstract_txt:from in 1966) [ClassicSimilarity], result of:
           0.023778727 = score(doc=1966,freq=2.0), product of:
             0.06499618 = queryWeight, product of:
               1.311419 = boost
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.017961057 = queryNorm
             0.36584806 = fieldWeight in 1966, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.09375 = fieldNorm(doc=1966)
         0.07933904 = weight(abstract_txt:documents in 1966) [ClassicSimilarity], result of:
           0.07933904 = score(doc=1966,freq=2.0), product of:
             0.14512874 = queryWeight, product of:
               1.959631 = boost
               4.123322 = idf(docFreq=1954, maxDocs=44421)
               0.017961057 = queryNorm
             0.54668045 = fieldWeight in 1966, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.123322 = idf(docFreq=1954, maxDocs=44421)
               0.09375 = fieldNorm(doc=1966)
         0.13564722 = weight(abstract_txt:evaluation in 1966) [ClassicSimilarity], result of:
           0.13564722 = score(doc=1966,freq=2.0), product of:
             0.22839274 = queryWeight, product of:
               2.8386254 = boost
               4.479632 = idf(docFreq=1368, maxDocs=44421)
               0.017961057 = queryNorm
             0.5939209 = fieldWeight in 1966, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.479632 = idf(docFreq=1368, maxDocs=44421)
               0.09375 = fieldNorm(doc=1966)
         0.1621796 = weight(abstract_txt:query in 1966) [ClassicSimilarity], result of:
           0.1621796 = score(doc=1966,freq=2.0), product of:
             0.2572799 = queryWeight, product of:
               3.0127969 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.017961057 = queryNorm
             0.6303625 = fieldWeight in 1966, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.09375 = fieldNorm(doc=1966)
       0.24 = coord(6/25)
   

4. Zhu, J.; Song, D.; Rüger, S.: Integrating multiple windows and document features for expert finding (2009) 0.15

   0.14943525 = sum of:
     0.14943525 = product of:
       0.46698517 = sum of:
         0.053588215 = weight(abstract_txt:trec in 3755) [ClassicSimilarity], result of:
           0.053588215 = score(doc=3755,freq=1.0), product of:
             0.12789063 = queryWeight, product of:
               1.0620778 = boost
               6.704255 = idf(docFreq=147, maxDocs=44421)
               0.017961057 = queryNorm
             0.41901594 = fieldWeight in 3755, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.704255 = idf(docFreq=147, maxDocs=44421)
               0.0625 = fieldNorm(doc=3755)
         0.013932827 = weight(abstract_txt:more in 3755) [ClassicSimilarity], result of:
           0.013932827 = score(doc=3755,freq=1.0), product of:
             0.06563901 = queryWeight, product of:
               1.0760512 = boost
               3.3962307 = idf(docFreq=4044, maxDocs=44421)
               0.017961057 = queryNorm
             0.21226442 = fieldWeight in 3755, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3962307 = idf(docFreq=4044, maxDocs=44421)
               0.0625 = fieldNorm(doc=3755)
         0.011209399 = weight(abstract_txt:from in 3755) [ClassicSimilarity], result of:
           0.011209399 = score(doc=3755,freq=1.0), product of:
             0.06499618 = queryWeight, product of:
               1.311419 = boost
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.017961057 = queryNorm
             0.17246243 = fieldWeight in 3755, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.0625 = fieldNorm(doc=3755)
         0.071729146 = weight(abstract_txt:single in 3755) [ClassicSimilarity], result of:
           0.071729146 = score(doc=3755,freq=2.0), product of:
             0.15533035 = queryWeight, product of:
               1.6553129 = boost
               5.2244954 = idf(docFreq=649, maxDocs=44421)
               0.017961057 = queryNorm
             0.4617845 = fieldWeight in 3755, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.2244954 = idf(docFreq=649, maxDocs=44421)
               0.0625 = fieldNorm(doc=3755)
         0.062275704 = weight(abstract_txt:technique in 3755) [ClassicSimilarity], result of:
           0.062275704 = score(doc=3755,freq=1.0), product of:
             0.17810726 = queryWeight, product of:
               1.7725265 = boost
               5.5944448 = idf(docFreq=448, maxDocs=44421)
               0.017961057 = queryNorm
             0.3496528 = fieldWeight in 3755, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5944448 = idf(docFreq=448, maxDocs=44421)
               0.0625 = fieldNorm(doc=3755)
         0.037400782 = weight(abstract_txt:documents in 3755) [ClassicSimilarity], result of:
           0.037400782 = score(doc=3755,freq=1.0), product of:
             0.14512874 = queryWeight, product of:
               1.959631 = boost
               4.123322 = idf(docFreq=1954, maxDocs=44421)
               0.017961057 = queryNorm
             0.25770763 = fieldWeight in 3755, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.123322 = idf(docFreq=1954, maxDocs=44421)
               0.0625 = fieldNorm(doc=3755)
         0.06394471 = weight(abstract_txt:evaluation in 3755) [ClassicSimilarity], result of:
           0.06394471 = score(doc=3755,freq=1.0), product of:
             0.22839274 = queryWeight, product of:
               2.8386254 = boost
               4.479632 = idf(docFreq=1368, maxDocs=44421)
               0.017961057 = queryNorm
             0.279977 = fieldWeight in 3755, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.479632 = idf(docFreq=1368, maxDocs=44421)
               0.0625 = fieldNorm(doc=3755)
         0.15290439 = weight(abstract_txt:query in 3755) [ClassicSimilarity], result of:
           0.15290439 = score(doc=3755,freq=4.0), product of:
             0.2572799 = queryWeight, product of:
               3.0127969 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.017961057 = queryNorm
             0.5943115 = fieldWeight in 3755, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.0625 = fieldNorm(doc=3755)
       0.32 = coord(8/25)
   

5. Ruthven, T.; Lalmas, M.; Rijsbergen, K.van: Incorporating user research behavior into relevance feedback (2003) 0.14

   0.14471672 = sum of:
     0.14471672 = product of:
       0.45223975 = sum of:
         0.075785175 = weight(abstract_txt:trec in 169) [ClassicSimilarity], result of:
           0.075785175 = score(doc=169,freq=2.0), product of:
             0.12789063 = queryWeight, product of:
               1.0620778 = boost
               6.704255 = idf(docFreq=147, maxDocs=44421)
               0.017961057 = queryNorm
             0.592578 = fieldWeight in 169, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.704255 = idf(docFreq=147, maxDocs=44421)
               0.0625 = fieldNorm(doc=169)
         0.024132363 = weight(abstract_txt:more in 169) [ClassicSimilarity], result of:
           0.024132363 = score(doc=169,freq=3.0), product of:
             0.06563901 = queryWeight, product of:
               1.0760512 = boost
               3.3962307 = idf(docFreq=4044, maxDocs=44421)
               0.017961057 = queryNorm
             0.36765274 = fieldWeight in 169, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.3962307 = idf(docFreq=4044, maxDocs=44421)
               0.0625 = fieldNorm(doc=169)
         0.011209399 = weight(abstract_txt:from in 169) [ClassicSimilarity], result of:
           0.011209399 = score(doc=169,freq=1.0), product of:
             0.06499618 = queryWeight, product of:
               1.311419 = boost
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.017961057 = queryNorm
             0.17246243 = fieldWeight in 169, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.759399 = idf(docFreq=7646, maxDocs=44421)
               0.0625 = fieldNorm(doc=169)
         0.08807114 = weight(abstract_txt:technique in 169) [ClassicSimilarity], result of:
           0.08807114 = score(doc=169,freq=2.0), product of:
             0.17810726 = queryWeight, product of:
               1.7725265 = boost
               5.5944448 = idf(docFreq=448, maxDocs=44421)
               0.017961057 = queryNorm
             0.4944837 = fieldWeight in 169, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.5944448 = idf(docFreq=448, maxDocs=44421)
               0.0625 = fieldNorm(doc=169)
         0.02808454 = weight(abstract_txt:they in 169) [ClassicSimilarity], result of:
           0.02808454 = score(doc=169,freq=1.0), product of:
             0.11989778 = queryWeight, product of:
               1.7811608 = boost
               3.7477977 = idf(docFreq=2845, maxDocs=44421)
               0.017961057 = queryNorm
             0.23423736 = fieldWeight in 169, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.7477977 = idf(docFreq=2845, maxDocs=44421)
               0.0625 = fieldNorm(doc=169)
         0.052892696 = weight(abstract_txt:documents in 169) [ClassicSimilarity], result of:
           0.052892696 = score(doc=169,freq=2.0), product of:
             0.14512874 = queryWeight, product of:
               1.959631 = boost
               4.123322 = idf(docFreq=1954, maxDocs=44421)
               0.017961057 = queryNorm
             0.3644536 = fieldWeight in 169, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.123322 = idf(docFreq=1954, maxDocs=44421)
               0.0625 = fieldNorm(doc=169)
         0.06394471 = weight(abstract_txt:evaluation in 169) [ClassicSimilarity], result of:
           0.06394471 = score(doc=169,freq=1.0), product of:
             0.22839274 = queryWeight, product of:
               2.8386254 = boost
               4.479632 = idf(docFreq=1368, maxDocs=44421)
               0.017961057 = queryNorm
             0.279977 = fieldWeight in 169, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.479632 = idf(docFreq=1368, maxDocs=44421)
               0.0625 = fieldNorm(doc=169)
         0.10811973 = weight(abstract_txt:query in 169) [ClassicSimilarity], result of:
           0.10811973 = score(doc=169,freq=2.0), product of:
             0.2572799 = queryWeight, product of:
               3.0127969 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.017961057 = queryNorm
             0.42024165 = fieldWeight in 169, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.0625 = fieldNorm(doc=169)
       0.32 = coord(8/25)