Document (#24516)

Author

Zachary, J.
Iyengar, S.S.
Barhen, J.

Title

Content based image retrieval and information theory : a general approach

Source

Journal of the American Society for Information Science and technology. 52(2001) no.10, S.840-852

Year

2001

Abstract

A fundamental aspect of content-based image retrieval (CBIR) is the extraction and the representation of a visual feature that is an effective discriminant between pairs of images. Among the many visual features that have been studied, the distribution of color pixels in an image is the most common visual feature studied. The standard representation of color for content-based indexing in image databases is the color histogram description and representation.Vector-based distance functions are used to compute the similarity between two images as the distance between points in the color histogram space. This paper proposes an alternative real valued representation of color based on the information theoretic concept of entropy. A theoretical presentation of image entropy is accompanied by a practical description of the merits and limitations of image entropy compared to color histograms. Specifically, the L, norm for color histograms is shown to provide an upper bound on the difference between image entropy values. Our initial results suggest that image entropy is a promising approach to image

Form

Bilder

Object

CBIR

Similar documents (content)

1. Subramanyam Rallabandi, V.P.; Sett, S.K.: Knowledge-based image retrieval system (2008) 0.41

   0.40768918 = sum of:
     0.40768918 = product of:
       1.4560328 = sum of:
         0.061272383 = weight(abstract_txt:images in 280) [ClassicSimilarity], result of:
           0.061272383 = score(doc=280,freq=3.0), product of:
             0.0836234 = queryWeight, product of:
               1.4212499 = boost
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.010866036 = queryNorm
             0.7327181 = fieldWeight in 280, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.078125 = fieldNorm(doc=280)
         0.024733296 = weight(abstract_txt:content in 280) [ClassicSimilarity], result of:
           0.024733296 = score(doc=280,freq=1.0), product of:
             0.075406745 = queryWeight, product of:
               1.6529406 = boost
               4.1983805 = idf(docFreq=1744, maxDocs=42740)
               0.010866036 = queryNorm
             0.32799846 = fieldWeight in 280, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1983805 = idf(docFreq=1744, maxDocs=42740)
               0.078125 = fieldNorm(doc=280)
         0.02602847 = weight(abstract_txt:based in 280) [ClassicSimilarity], result of:
           0.02602847 = score(doc=280,freq=2.0), product of:
             0.07341659 = queryWeight, product of:
               2.1055892 = boost
               3.2088501 = idf(docFreq=4693, maxDocs=42740)
               0.010866036 = queryNorm
             0.35453117 = fieldWeight in 280, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.2088501 = idf(docFreq=4693, maxDocs=42740)
               0.078125 = fieldNorm(doc=280)
         0.05963709 = weight(abstract_txt:visual in 280) [ClassicSimilarity], result of:
           0.05963709 = score(doc=280,freq=1.0), product of:
             0.1355917 = queryWeight, product of:
               2.216505 = boost
               5.629804 = idf(docFreq=416, maxDocs=42740)
               0.010866036 = queryNorm
             0.43982846 = fieldWeight in 280, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.629804 = idf(docFreq=416, maxDocs=42740)
               0.078125 = fieldNorm(doc=280)
         0.20442747 = weight(abstract_txt:histogram in 280) [ClassicSimilarity], result of:
           0.20442747 = score(doc=280,freq=1.0), product of:
             0.26928857 = queryWeight, product of:
               2.5504422 = boost
               9.71698 = idf(docFreq=6, maxDocs=42740)
               0.010866036 = queryNorm
             0.75913906 = fieldWeight in 280, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.71698 = idf(docFreq=6, maxDocs=42740)
               0.078125 = fieldNorm(doc=280)
         0.31044337 = weight(abstract_txt:image in 280) [ClassicSimilarity], result of:
           0.31044337 = score(doc=280,freq=4.0), product of:
             0.37002483 = queryWeight, product of:
               6.342029 = boost
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.010866036 = queryNorm
             0.83897984 = fieldWeight in 280, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.078125 = fieldNorm(doc=280)
         0.7694908 = weight(abstract_txt:color in 280) [ClassicSimilarity], result of:
           0.7694908 = score(doc=280,freq=4.0), product of:
             0.62325156 = queryWeight, product of:
               7.258924 = boost
               7.9016905 = idf(docFreq=42, maxDocs=42740)
               0.010866036 = queryNorm
             1.2346392 = fieldWeight in 280, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               7.9016905 = idf(docFreq=42, maxDocs=42740)
               0.078125 = fieldNorm(doc=280)
       0.28 = coord(7/25)
   

2. Mehtre, B.M.; Kankanhalli, M.S.; Lee, W.F.: Content-based image retrieval using a composite color-shape approach (1998) 0.38

   0.3777596 = sum of:
     0.3777596 = product of:
       1.1804988 = sum of:
         0.04963358 = weight(abstract_txt:compute in 2145) [ClassicSimilarity], result of:
           0.04963358 = score(doc=2145,freq=1.0), product of:
             0.083182536 = queryWeight, product of:
               1.0023228 = boost
               7.637539 = idf(docFreq=55, maxDocs=42740)
               0.010866036 = queryNorm
             0.5966827 = fieldWeight in 2145, 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=2145)
         0.0791023 = weight(abstract_txt:images in 2145) [ClassicSimilarity], result of:
           0.0791023 = score(doc=2145,freq=5.0), product of:
             0.0836234 = queryWeight, product of:
               1.4212499 = boost
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.010866036 = queryNorm
             0.945935 = fieldWeight in 2145, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.078125 = fieldNorm(doc=2145)
         0.0468371 = weight(abstract_txt:feature in 2145) [ClassicSimilarity], result of:
           0.0468371 = score(doc=2145,freq=1.0), product of:
             0.100828916 = queryWeight, product of:
               1.5606269 = boost
               5.945863 = idf(docFreq=303, maxDocs=42740)
               0.010866036 = queryNorm
             0.4645205 = fieldWeight in 2145, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.945863 = idf(docFreq=303, maxDocs=42740)
               0.078125 = fieldNorm(doc=2145)
         0.024733296 = weight(abstract_txt:content in 2145) [ClassicSimilarity], result of:
           0.024733296 = score(doc=2145,freq=1.0), product of:
             0.075406745 = queryWeight, product of:
               1.6529406 = boost
               4.1983805 = idf(docFreq=1744, maxDocs=42740)
               0.010866036 = queryNorm
             0.32799846 = fieldWeight in 2145, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1983805 = idf(docFreq=1744, maxDocs=42740)
               0.078125 = fieldNorm(doc=2145)
         0.018913627 = weight(abstract_txt:between in 2145) [ClassicSimilarity], result of:
           0.018913627 = score(doc=2145,freq=1.0), product of:
             0.06940407 = queryWeight, product of:
               1.8311082 = boost
               3.4881876 = idf(docFreq=3549, maxDocs=42740)
               0.010866036 = queryNorm
             0.27251464 = fieldWeight in 2145, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4881876 = idf(docFreq=3549, maxDocs=42740)
               0.078125 = fieldNorm(doc=2145)
         0.02602847 = weight(abstract_txt:based in 2145) [ClassicSimilarity], result of:
           0.02602847 = score(doc=2145,freq=2.0), product of:
             0.07341659 = queryWeight, product of:
               2.1055892 = boost
               3.2088501 = idf(docFreq=4693, maxDocs=42740)
               0.010866036 = queryNorm
             0.35453117 = fieldWeight in 2145, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.2088501 = idf(docFreq=4693, maxDocs=42740)
               0.078125 = fieldNorm(doc=2145)
         0.26885185 = weight(abstract_txt:image in 2145) [ClassicSimilarity], result of:
           0.26885185 = score(doc=2145,freq=3.0), product of:
             0.37002483 = queryWeight, product of:
               6.342029 = boost
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.010866036 = queryNorm
             0.7265779 = fieldWeight in 2145, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.078125 = fieldNorm(doc=2145)
         0.6663986 = weight(abstract_txt:color in 2145) [ClassicSimilarity], result of:
           0.6663986 = score(doc=2145,freq=3.0), product of:
             0.62325156 = queryWeight, product of:
               7.258924 = boost
               7.9016905 = idf(docFreq=42, maxDocs=42740)
               0.010866036 = queryNorm
             1.0692289 = fieldWeight in 2145, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               7.9016905 = idf(docFreq=42, maxDocs=42740)
               0.078125 = fieldNorm(doc=2145)
       0.32 = coord(8/25)
   

3. Park, G.; Baek, Y.; Lee, H.-K.: Re-ranking algorithm using post-retrieval clustering for content-based image retrieval (2005) 0.33

   0.32950196 = sum of:
     0.32950196 = product of:
       0.9152832 = sum of:
         0.08856657 = weight(abstract_txt:cbir in 3006) [ClassicSimilarity], result of:
           0.08856657 = score(doc=3006,freq=2.0), product of:
             0.112708926 = queryWeight, product of:
               1.1667309 = boost
               8.890302 = idf(docFreq=15, maxDocs=42740)
               0.010866036 = queryNorm
             0.7857991 = fieldWeight in 3006, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               8.890302 = idf(docFreq=15, maxDocs=42740)
               0.0625 = fieldNorm(doc=3006)
         0.049017906 = weight(abstract_txt:images in 3006) [ClassicSimilarity], result of:
           0.049017906 = score(doc=3006,freq=3.0), product of:
             0.0836234 = queryWeight, product of:
               1.4212499 = boost
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.010866036 = queryNorm
             0.5861745 = fieldWeight in 3006, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.0625 = fieldNorm(doc=3006)
         0.019786637 = weight(abstract_txt:content in 3006) [ClassicSimilarity], result of:
           0.019786637 = score(doc=3006,freq=1.0), product of:
             0.075406745 = queryWeight, product of:
               1.6529406 = boost
               4.1983805 = idf(docFreq=1744, maxDocs=42740)
               0.010866036 = queryNorm
             0.26239878 = fieldWeight in 3006, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1983805 = idf(docFreq=1744, maxDocs=42740)
               0.0625 = fieldNorm(doc=3006)
         0.04852694 = weight(abstract_txt:distance in 3006) [ClassicSimilarity], result of:
           0.04852694 = score(doc=3006,freq=1.0), product of:
             0.11979914 = queryWeight, product of:
               1.7011138 = boost
               6.4811068 = idf(docFreq=177, maxDocs=42740)
               0.010866036 = queryNorm
             0.40506917 = fieldWeight in 3006, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.4811068 = idf(docFreq=177, maxDocs=42740)
               0.0625 = fieldNorm(doc=3006)
         0.014723928 = weight(abstract_txt:based in 3006) [ClassicSimilarity], result of:
           0.014723928 = score(doc=3006,freq=1.0), product of:
             0.07341659 = queryWeight, product of:
               2.1055892 = boost
               3.2088501 = idf(docFreq=4693, maxDocs=42740)
               0.010866036 = queryNorm
             0.20055313 = fieldWeight in 3006, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.2088501 = idf(docFreq=4693, maxDocs=42740)
               0.0625 = fieldNorm(doc=3006)
         0.04770967 = weight(abstract_txt:visual in 3006) [ClassicSimilarity], result of:
           0.04770967 = score(doc=3006,freq=1.0), product of:
             0.1355917 = queryWeight, product of:
               2.216505 = boost
               5.629804 = idf(docFreq=416, maxDocs=42740)
               0.010866036 = queryNorm
             0.35186276 = fieldWeight in 3006, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.629804 = idf(docFreq=416, maxDocs=42740)
               0.0625 = fieldNorm(doc=3006)
         0.16354197 = weight(abstract_txt:histogram in 3006) [ClassicSimilarity], result of:
           0.16354197 = score(doc=3006,freq=1.0), product of:
             0.26928857 = queryWeight, product of:
               2.5504422 = boost
               9.71698 = idf(docFreq=6, maxDocs=42740)
               0.010866036 = queryNorm
             0.60731125 = fieldWeight in 3006, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.71698 = idf(docFreq=6, maxDocs=42740)
               0.0625 = fieldNorm(doc=3006)
         0.1756133 = weight(abstract_txt:image in 3006) [ClassicSimilarity], result of:
           0.1756133 = score(doc=3006,freq=2.0), product of:
             0.37002483 = queryWeight, product of:
               6.342029 = boost
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.010866036 = queryNorm
             0.47459868 = fieldWeight in 3006, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.0625 = fieldNorm(doc=3006)
         0.3077963 = weight(abstract_txt:color in 3006) [ClassicSimilarity], result of:
           0.3077963 = score(doc=3006,freq=1.0), product of:
             0.62325156 = queryWeight, product of:
               7.258924 = boost
               7.9016905 = idf(docFreq=42, maxDocs=42740)
               0.010866036 = queryNorm
             0.49385566 = fieldWeight in 3006, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.9016905 = idf(docFreq=42, maxDocs=42740)
               0.0625 = fieldNorm(doc=3006)
       0.36 = coord(9/25)
   

4. Corridoni, J.M.; Bimbo, A. del; Vicario, E.: Image retrieval by color semantics with incomplete knowledge (1998) 0.30

   0.29982263 = sum of:
     0.29982263 = product of:
       0.8328406 = sum of:
         0.02874926 = weight(abstract_txt:description in 1595) [ClassicSimilarity], result of:
           0.02874926 = score(doc=1595,freq=2.0), product of:
             0.067071736 = queryWeight, product of:
               1.2728473 = boost
               4.849446 = idf(docFreq=909, maxDocs=42740)
               0.010866036 = queryNorm
             0.4286345 = fieldWeight in 1595, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.849446 = idf(docFreq=909, maxDocs=42740)
               0.0625 = fieldNorm(doc=1595)
         0.0283005 = weight(abstract_txt:images in 1595) [ClassicSimilarity], result of:
           0.0283005 = score(doc=1595,freq=1.0), product of:
             0.0836234 = queryWeight, product of:
               1.4212499 = boost
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.010866036 = 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)
         0.019786637 = weight(abstract_txt:content in 1595) [ClassicSimilarity], result of:
           0.019786637 = score(doc=1595,freq=1.0), product of:
             0.075406745 = queryWeight, product of:
               1.6529406 = boost
               4.1983805 = idf(docFreq=1744, maxDocs=42740)
               0.010866036 = queryNorm
             0.26239878 = fieldWeight in 1595, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1983805 = idf(docFreq=1744, maxDocs=42740)
               0.0625 = fieldNorm(doc=1595)
         0.04852694 = weight(abstract_txt:distance in 1595) [ClassicSimilarity], result of:
           0.04852694 = score(doc=1595,freq=1.0), product of:
             0.11979914 = queryWeight, product of:
               1.7011138 = boost
               6.4811068 = idf(docFreq=177, maxDocs=42740)
               0.010866036 = queryNorm
             0.40506917 = fieldWeight in 1595, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.4811068 = idf(docFreq=177, maxDocs=42740)
               0.0625 = fieldNorm(doc=1595)
         0.015130902 = weight(abstract_txt:between in 1595) [ClassicSimilarity], result of:
           0.015130902 = score(doc=1595,freq=1.0), product of:
             0.06940407 = queryWeight, product of:
               1.8311082 = boost
               3.4881876 = idf(docFreq=3549, maxDocs=42740)
               0.010866036 = queryNorm
             0.21801172 = fieldWeight in 1595, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4881876 = idf(docFreq=3549, maxDocs=42740)
               0.0625 = fieldNorm(doc=1595)
         0.032669224 = weight(abstract_txt:representation in 1595) [ClassicSimilarity], result of:
           0.032669224 = score(doc=1595,freq=1.0), product of:
             0.10533872 = queryWeight, product of:
               1.9536474 = boost
               4.9621596 = idf(docFreq=812, maxDocs=42740)
               0.010866036 = queryNorm
             0.31013498 = fieldWeight in 1595, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.9621596 = idf(docFreq=812, maxDocs=42740)
               0.0625 = fieldNorm(doc=1595)
         0.04770967 = weight(abstract_txt:visual in 1595) [ClassicSimilarity], result of:
           0.04770967 = score(doc=1595,freq=1.0), product of:
             0.1355917 = queryWeight, product of:
               2.216505 = boost
               5.629804 = idf(docFreq=416, maxDocs=42740)
               0.010866036 = queryNorm
             0.35186276 = fieldWeight in 1595, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.629804 = idf(docFreq=416, maxDocs=42740)
               0.0625 = fieldNorm(doc=1595)
         0.30417117 = weight(abstract_txt:image in 1595) [ClassicSimilarity], result of:
           0.30417117 = score(doc=1595,freq=6.0), product of:
             0.37002483 = queryWeight, product of:
               6.342029 = boost
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.010866036 = 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)
         0.3077963 = weight(abstract_txt:color in 1595) [ClassicSimilarity], result of:
           0.3077963 = score(doc=1595,freq=1.0), product of:
             0.62325156 = queryWeight, product of:
               7.258924 = boost
               7.9016905 = idf(docFreq=42, maxDocs=42740)
               0.010866036 = queryNorm
             0.49385566 = fieldWeight in 1595, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.9016905 = idf(docFreq=42, maxDocs=42740)
               0.0625 = fieldNorm(doc=1595)
       0.36 = coord(9/25)
   

5. Kim, C.-R.; Chung, C.-W.: XMage: An image retrieval method based on partial similarity (2006) 0.27

   0.27241746 = sum of:
     0.27241746 = product of:
       0.85130453 = sum of:
         0.039706867 = weight(abstract_txt:compute in 2974) [ClassicSimilarity], result of:
           0.039706867 = score(doc=2974,freq=1.0), product of:
             0.083182536 = queryWeight, product of:
               1.0023228 = boost
               7.637539 = idf(docFreq=55, maxDocs=42740)
               0.010866036 = queryNorm
             0.47734618 = fieldWeight in 2974, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.637539 = idf(docFreq=55, maxDocs=42740)
               0.0625 = fieldNorm(doc=2974)
         0.074876085 = weight(abstract_txt:images in 2974) [ClassicSimilarity], result of:
           0.074876085 = score(doc=2974,freq=7.0), product of:
             0.0836234 = queryWeight, product of:
               1.4212499 = boost
               5.414848 = idf(docFreq=516, maxDocs=42740)
               0.010866036 = 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)
         0.04852694 = weight(abstract_txt:distance in 2974) [ClassicSimilarity], result of:
           0.04852694 = score(doc=2974,freq=1.0), product of:
             0.11979914 = queryWeight, product of:
               1.7011138 = boost
               6.4811068 = idf(docFreq=177, maxDocs=42740)
               0.010866036 = queryNorm
             0.40506917 = fieldWeight in 2974, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.4811068 = idf(docFreq=177, maxDocs=42740)
               0.0625 = fieldNorm(doc=2974)
         0.02620749 = weight(abstract_txt:between in 2974) [ClassicSimilarity], result of:
           0.02620749 = score(doc=2974,freq=3.0), product of:
             0.06940407 = queryWeight, product of:
               1.8311082 = boost
               3.4881876 = idf(docFreq=3549, maxDocs=42740)
               0.010866036 = queryNorm
             0.37760738 = fieldWeight in 2974, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.4881876 = idf(docFreq=3549, maxDocs=42740)
               0.0625 = fieldNorm(doc=2974)
         0.032669224 = weight(abstract_txt:representation in 2974) [ClassicSimilarity], result of:
           0.032669224 = score(doc=2974,freq=1.0), product of:
             0.10533872 = queryWeight, product of:
               1.9536474 = boost
               4.9621596 = idf(docFreq=812, maxDocs=42740)
               0.010866036 = queryNorm
             0.31013498 = fieldWeight in 2974, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.9621596 = idf(docFreq=812, maxDocs=42740)
               0.0625 = fieldNorm(doc=2974)
         0.02550259 = weight(abstract_txt:based in 2974) [ClassicSimilarity], result of:
           0.02550259 = score(doc=2974,freq=3.0), product of:
             0.07341659 = queryWeight, product of:
               2.1055892 = boost
               3.2088501 = idf(docFreq=4693, maxDocs=42740)
               0.010866036 = queryNorm
             0.3473682 = fieldWeight in 2974, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.2088501 = idf(docFreq=4693, maxDocs=42740)
               0.0625 = fieldNorm(doc=2974)
         0.23128328 = weight(abstract_txt:histogram in 2974) [ClassicSimilarity], result of:
           0.23128328 = score(doc=2974,freq=2.0), product of:
             0.26928857 = queryWeight, product of:
               2.5504422 = boost
               9.71698 = idf(docFreq=6, maxDocs=42740)
               0.010866036 = queryNorm
             0.85886776 = fieldWeight in 2974, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.71698 = idf(docFreq=6, maxDocs=42740)
               0.0625 = fieldNorm(doc=2974)
         0.37253207 = weight(abstract_txt:image in 2974) [ClassicSimilarity], result of:
           0.37253207 = score(doc=2974,freq=9.0), product of:
             0.37002483 = queryWeight, product of:
               6.342029 = boost
               5.369471 = idf(docFreq=540, maxDocs=42740)
               0.010866036 = 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)
       0.32 = coord(8/25)