Document (#36940)

Author

Sun, A.
Bhowmick, S.S.
Nguyen, K.T.N.
Bai, G.

Title

Tag-based social image retrieval : an empirical evaluation

Source

Journal of the American Society for Information Science and Technology. 62(2011) no.12, S.2364-2381

Year

2011

Abstract

Tags associated with social images are valuable information source for superior image search and retrieval experiences. Although various heuristics are valuable to boost tag-based search for images, there is a lack of general framework to study the impact of these heuristics. Specifically, the task of ranking images matching a given tag query based on their associated tags in descending order of relevance has not been well studied. In this article, we take the first step to propose a generic, flexible, and extensible framework for this task and exploit it for a systematic and comprehensive empirical evaluation of various methods for ranking images. To this end, we identified five orthogonal dimensions to quantify the matching score between a tagged image and a tag query. These five dimensions are: (i) tag relatedness to measure the degree of effectiveness of a tag describing the tagged image; (ii) tag discrimination to quantify the degree of discrimination of a tag with respect to the entire tagged image collection; (iii) tag length normalization analogous to document length normalization in web search; (iv) tag-query matching model for the matching score computation between an image tag and a query tag; and (v) query model for tag query rewriting. For each dimension, we identify a few implementations and evaluate their impact on NUS-WIDE dataset, the largest human-annotated dataset consisting of more than 269K tagged images from Flickr. We evaluated 81 single-tag queries and 443 multi-tag queries over 288 search methods and systematically compare their performances using standard metrics including Precision at top-K, Mean Average Precision (MAP), Recall, and Normalized Discounted Cumulative Gain (NDCG).

Theme

Social tagging

Form

Bilder

Similar documents (author)

1. Nguyen, P.H.P.; Kaneiwa, K.; Nguyen, M.-Q.: Ontology inferencing rules and operations in conceptual structure theory (2010) 4.91

   4.9135056 = sum of:
     4.9135056 = weight(author_txt:nguyen in 1422) [ClassicSimilarity], result of:
       4.9135056 = fieldWeight in 1422, product of:
         1.4142135 = tf(freq=2.0), with freq of:
           2.0 = termFreq=2.0
         9.264996 = idf(docFreq=10, maxDocs=42740)
         0.375 = fieldNorm(doc=1422)
   

2. Zhang, J.; Nguyen, T.: WebStar: a visualization model for hyperlink structures (2005) 4.63

   4.632498 = sum of:
     4.632498 = weight(author_txt:nguyen in 3057) [ClassicSimilarity], result of:
       4.632498 = fieldWeight in 3057, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.264996 = idf(docFreq=10, maxDocs=42740)
         0.5 = fieldNorm(doc=3057)
   

3. Nguyen, S.-H.; Chowdhury, G.: Interpreting the knowledge map of digital library research (1990-2010) (2013) 4.05

   4.0534353 = sum of:
     4.0534353 = weight(author_txt:nguyen in 2959) [ClassicSimilarity], result of:
       4.0534353 = fieldWeight in 2959, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.264996 = idf(docFreq=10, maxDocs=42740)
         0.4375 = fieldNorm(doc=2959)
   

4. Nguyen, T.-L.; Wu, X.; Sajeev, S.: Object-oriented modeling of multimedia documents (1998) 3.47

   3.4743733 = sum of:
     3.4743733 = weight(author_txt:nguyen in 4599) [ClassicSimilarity], result of:
       3.4743733 = fieldWeight in 4599, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.264996 = idf(docFreq=10, maxDocs=42740)
         0.375 = fieldNorm(doc=4599)
   

5. Yee, W.G.; Nguyen, L.T; Frieder, O.: ¬A view of the data on P2P file-sharing systems (2009) 3.47

   3.4743733 = sum of:
     3.4743733 = weight(author_txt:nguyen in 119) [ClassicSimilarity], result of:
       3.4743733 = fieldWeight in 119, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.264996 = idf(docFreq=10, maxDocs=42740)
         0.375 = fieldNorm(doc=119)
   

Similar documents (content)

1. Shakir, H.S.; Nagao, M.: Context-sensitive processing of semantic queries in an image database system (1996) 0.33

   0.3347358 = sum of:
     0.3347358 = product of:
       1.195485 = sum of:
         0.054235935 = weight(abstract_txt:queries in 6695) [ClassicSimilarity], result of:
           0.054235935 = score(doc=6695,freq=2.0), product of:
             0.09645654 = queryWeight, product of:
               1.0311302 = boost
               5.0892105 = idf(docFreq=715, maxDocs=42740)
               0.018380942 = queryNorm
             0.56228364 = fieldWeight in 6695, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.0892105 = idf(docFreq=715, maxDocs=42740)
               0.078125 = fieldNorm(doc=6695)
         0.05371742 = weight(abstract_txt:degree in 6695) [ClassicSimilarity], result of:
           0.05371742 = score(doc=6695,freq=1.0), product of:
             0.12075182 = queryWeight, product of:
               1.1537043 = boost
               5.694183 = idf(docFreq=390, maxDocs=42740)
               0.018380942 = queryNorm
             0.44485804 = fieldWeight in 6695, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.694183 = idf(docFreq=390, maxDocs=42740)
               0.078125 = fieldNorm(doc=6695)
         0.22438575 = weight(abstract_txt:matching in 6695) [ClassicSimilarity], result of:
           0.22438575 = score(doc=6695,freq=3.0), product of:
             0.27360037 = queryWeight, product of:
               2.4559584 = boost
               6.060772 = idf(docFreq=270, maxDocs=42740)
               0.018380942 = queryNorm
             0.82012224 = fieldWeight in 6695, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.060772 = idf(docFreq=270, maxDocs=42740)
               0.078125 = fieldNorm(doc=6695)
         0.115483426 = weight(abstract_txt:images in 6695) [ClassicSimilarity], result of:
           0.115483426 = score(doc=6695,freq=1.0), product of:
             0.27298787 = queryWeight, product of:
               2.7427697 = boost
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.018380942 = queryNorm
             0.423035 = fieldWeight in 6695, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.078125 = fieldNorm(doc=6695)
         0.130909 = weight(abstract_txt:query in 6695) [ClassicSimilarity], result of:
           0.130909 = score(doc=6695,freq=2.0), product of:
             0.2503189 = queryWeight, product of:
               2.8771012 = boost
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.018380942 = queryNorm
             0.5229688 = fieldWeight in 6695, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.078125 = fieldNorm(doc=6695)
         0.25924549 = weight(abstract_txt:tagged in 6695) [ClassicSimilarity], result of:
           0.25924549 = score(doc=6695,freq=1.0), product of:
             0.43447793 = queryWeight, product of:
               3.0948992 = boost
               7.637539 = idf(docFreq=55, maxDocs=42740)
               0.018380942 = queryNorm
             0.5966827 = fieldWeight in 6695, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.637539 = idf(docFreq=55, maxDocs=42740)
               0.078125 = fieldNorm(doc=6695)
         0.3575079 = weight(abstract_txt:image in 6695) [ClassicSimilarity], result of:
           0.3575079 = score(doc=6695,freq=7.0), product of:
             0.32211807 = queryWeight, product of:
               3.2637422 = boost
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.018380942 = queryNorm
             1.109866 = fieldWeight in 6695, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.078125 = fieldNorm(doc=6695)
       0.28 = coord(7/25)
   

2. Ransom, N.; Rafferty, P.: Facets of user-assigned tags and their effectiveness in image retrieval (2011) 0.24

   0.24167076 = sum of:
     0.24167076 = product of:
       0.8631098 = sum of:
         0.071026295 = weight(abstract_txt:queries in 2297) [ClassicSimilarity], result of:
           0.071026295 = score(doc=2297,freq=7.0), product of:
             0.09645654 = queryWeight, product of:
               1.0311302 = boost
               5.0892105 = idf(docFreq=715, maxDocs=42740)
               0.018380942 = queryNorm
             0.7363554 = fieldWeight in 2297, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               5.0892105 = idf(docFreq=715, maxDocs=42740)
               0.0546875 = fieldNorm(doc=2297)
         0.027319252 = weight(abstract_txt:associated in 2297) [ClassicSimilarity], result of:
           0.027319252 = score(doc=2297,freq=1.0), product of:
             0.09758823 = queryWeight, product of:
               1.0371615 = boost
               5.1189785 = idf(docFreq=694, maxDocs=42740)
               0.018380942 = queryNorm
             0.27994412 = fieldWeight in 2297, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1189785 = idf(docFreq=694, maxDocs=42740)
               0.0546875 = fieldNorm(doc=2297)
         0.17095016 = weight(abstract_txt:tags in 2297) [ClassicSimilarity], result of:
           0.17095016 = score(doc=2297,freq=11.0), product of:
             0.14900482 = queryWeight, product of:
               1.2815862 = boost
               6.3253527 = idf(docFreq=207, maxDocs=42740)
               0.018380942 = queryNorm
             1.1472794 = fieldWeight in 2297, product of:
               3.3166249 = tf(freq=11.0), with freq of:
                 11.0 = termFreq=11.0
               6.3253527 = idf(docFreq=207, maxDocs=42740)
               0.0546875 = fieldNorm(doc=2297)
         0.07012521 = weight(abstract_txt:dataset in 2297) [ClassicSimilarity], result of:
           0.07012521 = score(doc=2297,freq=1.0), product of:
             0.18295081 = queryWeight, product of:
               1.4200866 = boost
               7.00893 = idf(docFreq=104, maxDocs=42740)
               0.018380942 = queryNorm
             0.38330087 = fieldWeight in 2297, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.00893 = idf(docFreq=104, maxDocs=42740)
               0.0546875 = fieldNorm(doc=2297)
         0.03435074 = weight(abstract_txt:search in 2297) [ClassicSimilarity], result of:
           0.03435074 = score(doc=2297,freq=3.0), product of:
             0.099314325 = queryWeight, product of:
               1.4796827 = boost
               3.6515355 = idf(docFreq=3014, maxDocs=42740)
               0.018380942 = queryNorm
             0.34587902 = fieldWeight in 2297, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.6515355 = idf(docFreq=3014, maxDocs=42740)
               0.0546875 = fieldNorm(doc=2297)
         0.1616768 = weight(abstract_txt:images in 2297) [ClassicSimilarity], result of:
           0.1616768 = score(doc=2297,freq=4.0), product of:
             0.27298787 = queryWeight, product of:
               2.7427697 = boost
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.018380942 = queryNorm
             0.592249 = fieldWeight in 2297, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.0546875 = fieldNorm(doc=2297)
         0.32766142 = weight(abstract_txt:image in 2297) [ClassicSimilarity], result of:
           0.32766142 = score(doc=2297,freq=12.0), product of:
             0.32211807 = queryWeight, product of:
               3.2637422 = boost
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.018380942 = queryNorm
             1.017209 = fieldWeight in 2297, product of:
               3.4641016 = tf(freq=12.0), with freq of:
                 12.0 = termFreq=12.0
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.0546875 = fieldNorm(doc=2297)
       0.28 = coord(7/25)
   

3. Corridoni, J.M.; Bimbo, A. del; Vicario, E.: Image retrieval by color semantics with incomplete knowledge (1998) 0.22

   0.21983965 = sum of:
     0.21983965 = product of:
       0.6869989 = sum of:
         0.030680478 = weight(abstract_txt:queries in 1595) [ClassicSimilarity], result of:
           0.030680478 = score(doc=1595,freq=1.0), product of:
             0.09645654 = queryWeight, product of:
               1.0311302 = boost
               5.0892105 = idf(docFreq=715, maxDocs=42740)
               0.018380942 = queryNorm
             0.31807566 = fieldWeight in 1595, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.0892105 = idf(docFreq=715, maxDocs=42740)
               0.0625 = fieldNorm(doc=1595)
         0.031222004 = weight(abstract_txt:associated in 1595) [ClassicSimilarity], result of:
           0.031222004 = score(doc=1595,freq=1.0), product of:
             0.09758823 = queryWeight, product of:
               1.0371615 = boost
               5.1189785 = idf(docFreq=694, maxDocs=42740)
               0.018380942 = queryNorm
             0.31993616 = fieldWeight in 1595, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1189785 = idf(docFreq=694, maxDocs=42740)
               0.0625 = fieldNorm(doc=1595)
         0.039076556 = weight(abstract_txt:precision in 1595) [ClassicSimilarity], result of:
           0.039076556 = score(doc=1595,freq=1.0), product of:
             0.113335975 = queryWeight, product of:
               1.1177162 = boost
               5.5165615 = idf(docFreq=466, maxDocs=42740)
               0.018380942 = queryNorm
             0.3447851 = fieldWeight in 1595, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5165615 = idf(docFreq=466, maxDocs=42740)
               0.0625 = fieldNorm(doc=1595)
         0.042973936 = weight(abstract_txt:degree in 1595) [ClassicSimilarity], result of:
           0.042973936 = score(doc=1595,freq=1.0), product of:
             0.12075182 = queryWeight, product of:
               1.1537043 = boost
               5.694183 = idf(docFreq=390, maxDocs=42740)
               0.018380942 = queryNorm
             0.35588643 = fieldWeight in 1595, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.694183 = idf(docFreq=390, maxDocs=42740)
               0.0625 = fieldNorm(doc=1595)
         0.08114156 = weight(abstract_txt:score in 1595) [ClassicSimilarity], result of:
           0.08114156 = score(doc=1595,freq=1.0), product of:
             0.18446721 = queryWeight, product of:
               1.4259597 = boost
               7.0379176 = idf(docFreq=101, maxDocs=42740)
               0.018380942 = queryNorm
             0.43986985 = fieldWeight in 1595, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.0379176 = idf(docFreq=101, maxDocs=42740)
               0.0625 = fieldNorm(doc=1595)
         0.09238674 = weight(abstract_txt:images in 1595) [ClassicSimilarity], result of:
           0.09238674 = score(doc=1595,freq=1.0), product of:
             0.27298787 = queryWeight, product of:
               2.7427697 = boost
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.018380942 = queryNorm
             0.338428 = fieldWeight in 1595, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.0625 = fieldNorm(doc=1595)
         0.10472719 = weight(abstract_txt:query in 1595) [ClassicSimilarity], result of:
           0.10472719 = score(doc=1595,freq=2.0), product of:
             0.2503189 = queryWeight, product of:
               2.8771012 = boost
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.018380942 = queryNorm
             0.41837507 = fieldWeight in 1595, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.0625 = fieldNorm(doc=1595)
         0.26479042 = weight(abstract_txt:image in 1595) [ClassicSimilarity], result of:
           0.26479042 = score(doc=1595,freq=6.0), product of:
             0.32211807 = queryWeight, product of:
               3.2637422 = boost
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.018380942 = queryNorm
             0.82202905 = fieldWeight in 1595, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.0625 = fieldNorm(doc=1595)
       0.32 = coord(8/25)
   

4. Kim, C.-R.; Chung, C.-W.: XMage: An image retrieval method based on partial similarity (2006) 0.22

   0.21751194 = sum of:
     0.21751194 = product of:
       0.90629977 = sum of:
         0.030680478 = weight(abstract_txt:queries in 2974) [ClassicSimilarity], result of:
           0.030680478 = score(doc=2974,freq=1.0), product of:
             0.09645654 = queryWeight, product of:
               1.0311302 = boost
               5.0892105 = idf(docFreq=715, maxDocs=42740)
               0.018380942 = queryNorm
             0.31807566 = fieldWeight in 2974, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.0892105 = idf(docFreq=715, maxDocs=42740)
               0.0625 = fieldNorm(doc=2974)
         0.032054015 = weight(abstract_txt:search in 2974) [ClassicSimilarity], result of:
           0.032054015 = score(doc=2974,freq=2.0), product of:
             0.099314325 = queryWeight, product of:
               1.4796827 = boost
               3.6515355 = idf(docFreq=3014, maxDocs=42740)
               0.018380942 = queryNorm
             0.3227532 = fieldWeight in 2974, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6515355 = idf(docFreq=3014, maxDocs=42740)
               0.0625 = fieldNorm(doc=2974)
         0.14656816 = weight(abstract_txt:matching in 2974) [ClassicSimilarity], result of:
           0.14656816 = score(doc=2974,freq=2.0), product of:
             0.27360037 = queryWeight, product of:
               2.4559584 = boost
               6.060772 = idf(docFreq=270, maxDocs=42740)
               0.018380942 = queryNorm
             0.53570163 = fieldWeight in 2974, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.060772 = idf(docFreq=270, maxDocs=42740)
               0.0625 = fieldNorm(doc=2974)
         0.24443233 = weight(abstract_txt:images in 2974) [ClassicSimilarity], result of:
           0.24443233 = score(doc=2974,freq=7.0), product of:
             0.27298787 = queryWeight, product of:
               2.7427697 = boost
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.018380942 = queryNorm
             0.8953963 = fieldWeight in 2974, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.0625 = fieldNorm(doc=2974)
         0.12826408 = weight(abstract_txt:query in 2974) [ClassicSimilarity], result of:
           0.12826408 = score(doc=2974,freq=3.0), product of:
             0.2503189 = queryWeight, product of:
               2.8771012 = boost
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.018380942 = queryNorm
             0.5124027 = fieldWeight in 2974, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.0625 = fieldNorm(doc=2974)
         0.3243007 = weight(abstract_txt:image in 2974) [ClassicSimilarity], result of:
           0.3243007 = score(doc=2974,freq=9.0), product of:
             0.32211807 = queryWeight, product of:
               3.2637422 = boost
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.018380942 = queryNorm
             1.0067759 = fieldWeight in 2974, product of:
               3.0 = tf(freq=9.0), with freq of:
                 9.0 = termFreq=9.0
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.0625 = fieldNorm(doc=2974)
       0.24 = coord(6/25)
   

5. Zanibbi, R.; Yuan, B.: Keyword and image-based retrieval for mathematical expressions (2011) 0.20

   0.19719453 = sum of:
     0.19719453 = product of:
       0.7042662 = sum of:
         0.06642518 = weight(abstract_txt:queries in 5450) [ClassicSimilarity], result of:
           0.06642518 = score(doc=5450,freq=3.0), product of:
             0.09645654 = queryWeight, product of:
               1.0311302 = boost
               5.0892105 = idf(docFreq=715, maxDocs=42740)
               0.018380942 = queryNorm
             0.68865395 = fieldWeight in 5450, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.0892105 = idf(docFreq=715, maxDocs=42740)
               0.078125 = fieldNorm(doc=5450)
         0.069078244 = weight(abstract_txt:precision in 5450) [ClassicSimilarity], result of:
           0.069078244 = score(doc=5450,freq=2.0), product of:
             0.113335975 = queryWeight, product of:
               1.1177162 = boost
               5.5165615 = idf(docFreq=466, maxDocs=42740)
               0.018380942 = queryNorm
             0.6094997 = fieldWeight in 5450, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.5165615 = idf(docFreq=466, maxDocs=42740)
               0.078125 = fieldNorm(doc=5450)
         0.04006752 = weight(abstract_txt:search in 5450) [ClassicSimilarity], result of:
           0.04006752 = score(doc=5450,freq=2.0), product of:
             0.099314325 = queryWeight, product of:
               1.4796827 = boost
               3.6515355 = idf(docFreq=3014, maxDocs=42740)
               0.018380942 = queryNorm
             0.4034415 = fieldWeight in 5450, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6515355 = idf(docFreq=3014, maxDocs=42740)
               0.078125 = fieldNorm(doc=5450)
         0.12954918 = weight(abstract_txt:matching in 5450) [ClassicSimilarity], result of:
           0.12954918 = score(doc=5450,freq=1.0), product of:
             0.27360037 = queryWeight, product of:
               2.4559584 = boost
               6.060772 = idf(docFreq=270, maxDocs=42740)
               0.018380942 = queryNorm
             0.4734978 = fieldWeight in 5450, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.060772 = idf(docFreq=270, maxDocs=42740)
               0.078125 = fieldNorm(doc=5450)
         0.115483426 = weight(abstract_txt:images in 5450) [ClassicSimilarity], result of:
           0.115483426 = score(doc=5450,freq=1.0), product of:
             0.27298787 = queryWeight, product of:
               2.7427697 = boost
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.018380942 = queryNorm
             0.423035 = fieldWeight in 5450, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.078125 = fieldNorm(doc=5450)
         0.09256664 = weight(abstract_txt:query in 5450) [ClassicSimilarity], result of:
           0.09256664 = score(doc=5450,freq=1.0), product of:
             0.2503189 = queryWeight, product of:
               2.8771012 = boost
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.018380942 = queryNorm
             0.36979482 = fieldWeight in 5450, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.078125 = fieldNorm(doc=5450)
         0.19109602 = weight(abstract_txt:image in 5450) [ClassicSimilarity], result of:
           0.19109602 = score(doc=5450,freq=2.0), product of:
             0.32211807 = queryWeight, product of:
               3.2637422 = boost
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.018380942 = queryNorm
             0.59324837 = fieldWeight in 5450, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.078125 = fieldNorm(doc=5450)
       0.28 = coord(7/25)